agentscript/dist/agentscript3d.umd.js

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
    typeof define === 'function' && define.amd ? define(['exports'], factory) :
    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.AS = {}));
})(this, (function (exports) { 'use strict';

    function imagePromise(url) {
        return new Promise((resolve, reject) => {
            const img = new Image();
            img.crossOrigin = 'Anonymous';
            img.onload = () => resolve(img);
            img.onerror = () => reject(`Could not load image ${url}`);
            img.src = url;
        })
    }
    async function imageToImageBitmap(img) {
        return createImageBitmap(img, {
            premultiplyAlpha: 'none',
            colorSpaceConversion: 'none',
        })
    }
    async function imageBitmapRendererCtx(imageBitmap) {
        const { width, height } = imageBitmap;
        const can = new OffscreenCanvas(width, height);
        const ctx = can.getContext('bitmaprenderer');
        ctx.transferFromImageBitmap(imageBitmap);
        return ctx
    }
    function imageBitmap2dCtx(imageBitmap) {
        const { width, height } = imageBitmap;
        const can = new OffscreenCanvas(width, height);
        const ctx = can.getContext('2d');
        ctx.drawImage(imageBitmap, 0, 0);
        return ctx
    }
    async function imageBitmapData(imageBitmap) {
        const ctx = imageBitmap2dCtx(imageBitmap);
        return ctx.getImageData(0, 0, ctx.canvas.width, ctx.canvas.height)
    }
    async function canvasToBlob(can, mimeType = 'png', quality = undefined) {
        if (!mimeType.startsWith('image/')) mimeType = 'image/' + mimeType;
        return new Promise(resolve => {
            can.toBlob(blob => resolve(blob), mimeType, quality);
        })
    }
    function AsyncFunction(argsArray, fcnBody) {
        const ctor = Object.getPrototypeOf(async function () {}).constructor;
        const asyncFcn = new ctor(...argsArray, fcnBody);
        return asyncFcn
    }
    async function blobToData(blob, type = 'dataURL') {
        type = type[0].toUpperCase() + type.slice(1);
        const types = ['Text', 'ArrayBuffer', 'DataURL'];
        if (!types.includes(type))
            throw Error('blobToData: data must be one of ' + types.toString())
        const reader = new FileReader();
        return new Promise((resolve, reject) => {
            reader.addEventListener('load', () => resolve(reader.result));
            reader.addEventListener('error', e => reject(e));
            reader['readAs' + type](blob);
        })
    }
    async function fetchData(url, type = 'blob') {
        const types = ['arrayBuffer', 'blob', 'json', 'text'];
        if (!types.includes(type))
            throw Error('fetchData: data must be one of ' + types.toString())
        return fetch(url).then(res => res[type]())
    }
    async function fetchJson(url) {
        return fetchData(url, 'json')
    }
    async function fetchText(url) {
        return fetchData(url, 'text')
    }
    function toDataURL(data, type = undefined) {
        if (data.toDataURL) return data.toDataURL(type, type)
        if (!type) type = 'text/plain;charset=US-ASCII';
        return `data:${type};base64,${btoa(data)}}`
    }
    async function blobsEqual(blob0, blob1) {
        const text0 = await blob0.text();
        const text1 = await blob1.text();
        return text0 === text1
    }
    function downloadCanvas(can, name = 'download.png', quality = null) {
        if (!(name.endsWith('.png') || name.endsWith('.jpeg'))) ;
        const type = name.endsWith('.png') ? 'image/png' : 'image/jpeg';
        const url = typeOf(can) === 'string' ? can : can.toDataURL(type, quality);
        const link = document.createElement('a');
        link.download = name;
        link.href = url;
        link.click();
    }
    function downloadBlob(blobable, name = 'download', format = true) {
        if (isDataSet(blobable) && !Array.isArray(blobable.data))
            blobable.data = Array.from(blobable.data);
        if (isTypedArray(blobable)) blobable = Array.from(blobable);
        if (isObject$1(blobable) || isArray(blobable))
            blobable = format
                ? JSON.stringify(blobable, null, 2)
                : JSON.stringify(blobable);
        let blob = typeOf(blobable) === 'blob' ? blobable : new Blob([blobable]);
        const url = URL.createObjectURL(blob);
        const link = document.createElement('a');
        link.download = name;
        link.href = url;
        link.click();
        URL.revokeObjectURL(url);
    }
    function xhrPromise(url, type = 'text', method = 'GET') {
        return new Promise((resolve, reject) => {
            const xhr = new XMLHttpRequest();
            xhr.open(method, url);
            xhr.responseType = type;
            xhr.onload = () => resolve(xhr.response);
            xhr.onerror = () =>
                reject(Error(`Could not load ${url}: ${xhr.status}`));
            xhr.send();
        })
    }
    function pause(ms = 1000) {
        return new Promise(resolve => {
            setTimeout(resolve, ms);
        })
    }
    async function timeoutLoop(fcn, steps = -1, ms = 0) {
        let i = 0;
        while (i++ !== steps) {
            fcn(i - 1);
            await pause(ms);
        }
    }
    function waitPromise(done, ms = 10) {
        return new Promise(resolve => {
            function waitOn() {
                if (done()) return resolve()
                else setTimeout(waitOn, ms);
            }
            waitOn();
        })
    }
    function offscreenOK() {
        return inWorker()
    }
    function createCanvas(width, height, offscreen = offscreenOK()) {
        if (offscreen) return new OffscreenCanvas(width, height)
        const can = document.createElement('canvas');
        can.width = width;
        can.height = height;
        return can
    }
    function createCtx(
        width,
        height,
        offscreen = offscreenOK(),
        attrs = {}
    ) {
        const can = createCanvas(width, height, offscreen);
        return can.getContext('2d', attrs)
    }
    function cloneCanvas(can, offscreen = offscreenOK()) {
        const ctx = createCtx(can.width, can.height, offscreen);
        ctx.drawImage(can, 0, 0);
        return ctx.canvas
    }
    function resizeCtx(ctx, width, height) {
        const copy = cloneCanvas(ctx.canvas);
        ctx.canvas.width = width;
        ctx.canvas.height = height;
        ctx.drawImage(copy, 0, 0);
    }
    function resizeCanvas(
        can,
        width,
        height = (width / can.width) * can.height
    ) {
        const ctx = createCtx(width, height);
        ctx.drawImage(can, 0, 0, width, height);
        return ctx.canvas
    }
    function setCanvasSize(can, width, height) {
        if (can.width !== width || can.height != height) {
            can.width = width;
            can.height = height;
        }
    }
    function setIdentity(ctx) {
        ctx.save();
        ctx.setTransform(1, 0, 0, 1, 0, 0);
    }
    function setTextProperties(
        ctx,
        font,
        textAlign = 'center',
        textBaseline = 'middle'
    ) {
        Object.assign(ctx, { font, textAlign, textBaseline });
    }
    function drawText(ctx, string, x, y, color, useIdentity = true) {
        if (useIdentity) setIdentity(ctx);
        ctx.fillStyle = color.css || color;
        ctx.fillText(string, x, y);
        if (useIdentity) ctx.restore();
    }
    function ctxImageData(ctx) {
        return ctx.getImageData(0, 0, ctx.canvas.width, ctx.canvas.height)
    }
    function ctxImageColors(ctx) {
        const typedArray = ctxImageData(ctx).data;
        const colors = [];
        step(typedArray.length, 4, i => colors.push(typedArray.subarray(i, i + 4)));
        return colors
    }
    function ctxImagePixels(ctx) {
        const imageData = ctxImageData(ctx);
        const pixels = new Uint32Array(imageData.data.buffer);
        return pixels
    }
    function clearCtx(ctx, cssColor = undefined) {
        const { width, height } = ctx.canvas;
        setIdentity(ctx);
        if (!cssColor || cssColor === 'transparent') {
            ctx.clearRect(0, 0, width, height);
        } else {
            cssColor = cssColor.css || cssColor;
            ctx.fillStyle = cssColor;
            ctx.fillRect(0, 0, width, height);
        }
        ctx.restore();
    }
    function imageToCtx(img) {
        const ctx = createCtx(img.width, img.height);
        fillCtxWithImage(ctx, img);
        return ctx
    }
    function imageToCanvas(img) {
        return imageToCtx(img).canvas
    }
    function fillCtxWithImage(ctx, img) {
        setIdentity(ctx);
        ctx.drawImage(img, 0, 0, ctx.canvas.width, ctx.canvas.height);
        ctx.restore();
    }
    function setCtxImage(ctx, img) {
        setCanvasSize(ctx.canvas, img.width, img.height);
        fillCtxWithImage(ctx, img);
    }
    let skipChecks = false;
    function skipErrorChecks(bool) {
        skipChecks = bool;
    }
    function checkArg$1(arg, type = 'number', name = 'Function') {
        if (skipChecks) return
        if (typeof arg !== type) {
            throw new Error(`${name} expected a ${type}, got ${arg}`)
        }
    }
    function checkArgs$1(argsArray, type = 'number', name = 'Function') {
        if (skipChecks) return
        if (typeOf(argsArray) === 'arguments') argsArray = Array.from(argsArray);
        argsArray.forEach((val, i) => {
            checkArg$1(val, type, name);
        });
    }
    const logOnceMsgSet = new Set();
    function logOnce(msg, useWarn = false) {
        if (!logOnceMsgSet.has(msg)) {
            if (useWarn) {
                console.warn(msg);
            } else {
                console.log(msg);
            }
            logOnceMsgSet.add(msg);
        }
    }
    function warn(msg) {
        logOnce(msg, true);
    }
    function timeit(f, runs = 1e5, name = 'test') {
        name = name + '-' + runs;
        console.time(name);
        for (let i = 0; i < runs; i++) f(i);
        console.timeEnd(name);
    }
    function fps() {
        const timer = typeof performance === 'undefined' ? Date : performance;
        const start = timer.now();
        let steps = 0;
        function perf() {
            steps++;
            const ms = timer.now() - start;
            const fps = parseFloat((steps / (ms / 1000)).toFixed(2));
            Object.assign(perf, { fps, ms, start, steps });
        }
        perf.steps = 0;
        return perf
    }
    function pps(obj, title = '') {
        if (title) console.log(title);
        let count = 1;
        let str = '';
        while (obj) {
            if (typeof obj === 'function') {
                str = obj.constructor.toString();
            } else {
                const okeys = Object.keys(obj);
                str =
                    okeys.length > 0
                        ? `[${okeys.join(', ')}]`
                        : `[${obj.constructor.name}]`;
            }
            console.log(`[${count++}]: ${str}`);
            obj = Object.getPrototypeOf(obj);
        }
    }
    function toWindow(obj) {
        Object.assign(window, obj);
        console.log('toWindow:', Object.keys(obj).join(', '));
    }
    function logAll(obj) {
        Object.keys(obj).forEach(key => console.log('  ', key, obj[key]));
    }
    function dump(model = window.model) {
        let { patches: ps, turtles: ts, links: ls } = model;
        Object.assign(window, { ps, ts, ls });
        window.p = ps.length > 0 ? ps.oneOf() : {};
        window.t = ts.length > 0 ? ts.oneOf() : {};
        window.l = ls.length > 0 ? ls.oneOf() : {};
        console.log('debug: ps, ts, ls, p, t, l dumped to window');
    }
    function addCssLink(url) {
        const link = document.createElement('link');
        link.setAttribute('rel', 'stylesheet');
        link.setAttribute('href', url);
        document.head.appendChild(link);
    }
    async function fetchCssStyle(url) {
        const response = await fetch(url);
        if (!response.ok) throw Error(`fetchCssStyle: Not found: ${url}`)
        const css = await response.text();
        addCssStyle(css);
        return css
    }
    function addCssStyle(css) {
        var style = document.createElement('style');
        style.innerHTML = css;
        document.head.appendChild(style);
    }
    function getQueryString() {
        return window.location.search.substr(1)
    }
    function parseQueryString(
        paramsString = getQueryString()
    ) {
        const results = {};
        const searchParams = new URLSearchParams(paramsString);
        for (var pair of searchParams.entries()) {
            let [key, val] = pair;
            if (val.match(/^[0-9.]+$/) || val.match(/^[0-9.]+e[0-9]+$/))
                val = Number(val);
            if (['true', 't', ''].includes(val)) val = true;
            if (['false', 'f'].includes(val)) val = false;
            results[key] = val;
        }
        return results
    }
    function RESTapi(parameters) {
        return Object.assign(parameters, parseQueryString())
    }
    function inWorker() {
        return !inNode() && typeof self.window === 'undefined'
    }
    function inNode() {
        return typeof global !== 'undefined'
    }
    function inDeno() {
        return !!Deno
    }
    function printToPage(msg, element = document.body) {
        if (typeof msg === 'object') {
            msg = JSON.stringify(msg, null, 2);
        }
        msg = '<pre>' + msg + '</pre>';
        if (typeof element === 'string') {
            element = document.getElementById(element);
        }
        element.style.fontFamily = 'monospace';
        element.innerHTML += msg;
    }
    function getEventXY(element, evt) {
        const rect = element.getBoundingClientRect();
        return [evt.clientX - rect.left, evt.clientY - rect.top]
    }
    function fcnToWorker(fcn) {
        const href = document.location.href;
        const root = href.replace(/\/[^\/]+$/, '/');
        const fcnStr = `(${fcn.toString(root)})("${root}")`;
        const objUrl = URL.createObjectURL(
            new Blob([fcnStr], { type: 'text/javascript' })
        );
        const worker = new Worker(objUrl);
        worker.onerror = function (e) {
            console.log('Worker ERROR: Line ', e.lineno, ': ', e.message);
        };
        return worker
    }
    const PI$2 = Math.PI;
    function randomInt(max) {
        return Math.floor(Math.random() * max)
    }
    function randomInt2(min, max) {
        return min + Math.floor(Math.random() * (max - min))
    }
    function randomFloat(max) {
        return Math.random() * max
    }
    function randomFloat2(min, max) {
        return min + Math.random() * (max - min)
    }
    function randomCentered(r) {
        return randomFloat2(-r / 2, r / 2)
    }
    function randomNormal(mean = 0.0, sigma = 1.0) {
        const [u1, u2] = [1.0 - Math.random(), Math.random()];
        const norm = Math.sqrt(-2.0 * Math.log(u1)) * Math.cos(2.0 * PI$2 * u2);
        return norm * sigma + mean
    }
    function randomSeed(seed = 123456) {
        seed = seed % 2147483647;
        Math.random = () => {
            seed = (seed * 16807) % 2147483647;
            return (seed - 1) / 2147483646
        };
    }
    function precision(num, digits = 4) {
        if (num === -0) return 0
        if (Array.isArray(num)) return num.map(val => precision(val, digits))
        const mult = 10 ** digits;
        return Math.round(num * mult) / mult
    }
    const isPowerOf2 = num => (num & (num - 1)) === 0;
    const nextPowerOf2 = num => Math.pow(2, Math.ceil(Math.log2(num)));
    function mod(v, n) {
        return ((v % n) + n) % n
    }
    const wrap = (v, min, max) => min + mod(v - min, max - min);
    function clamp(v, min, max) {
        if (v < min) return min
        if (v > max) return max
        return v
    }
    const isBetween = (val, min, max) => min <= val && val <= max;
    const lerp = (lo, hi, scale) =>
        lo <= hi ? lo + (hi - lo) * scale : lo - (lo - hi) * scale;
    function lerpScale(number, lo, hi) {
        if (lo === hi) throw Error('lerpScale: lo === hi')
        number = clamp(number, lo, hi);
        return (number - lo) / (hi - lo)
    }
    const toDeg$1 = 180 / Math.PI;
    const toRad$1 = Math.PI / 180;
    function degToRad(degrees) {
        return mod2pi(degrees * toRad$1)
    }
    function radToDeg(radians) {
        return mod360(radians * toDeg$1)
    }
    function radToHeading(radians) {
        const deg = radians * toDeg$1;
        return mod360(90 - deg)
    }
    function headingToRad(heading) {
        const deg = mod360(90 - heading);
        return deg * toRad$1
    }
    function radToHeadingAngle(radians) {
        return -radToDeg(radians)
    }
    function headingAngleToRad(headingAngle) {
        return -degToRad(headingAngle)
    }
    const degToHeading = degrees => mod360(90 - degrees);
    const headingToDeg = heading => mod360(90 - heading);
    function mod360(degrees) {
        return mod(degrees, 360)
    }
    function mod2pi(radians) {
        return mod(radians, 2 * PI$2)
    }
    function modpipi(radians) {
        return mod(radians, 2 * PI$2) - PI$2
    }
    function mod180180(degrees) {
        return mod360(degrees) - 180
    }
    function degreesEqual(deg1, deg2) {
        return mod360(deg1) === mod360(deg2)
    }
    function radsEqual(rads1, rads2) {
        return mod2pi(rads1) === mod2pi(rads2)
    }
    const headingsEq = degreesEqual;
    function subtractRadians(rad1, rad0) {
        let dr = mod2pi(rad1 - rad0);
        if (dr > PI$2) dr = dr - 2 * PI$2;
        return dr
    }
    function subtractDegrees(deg1, deg0) {
        let dAngle = mod360(deg1 - deg0);
        if (dAngle > 180) dAngle = dAngle - 360;
        return dAngle
    }
    function subtractHeadings(head1, head0) {
        return -subtractDegrees(head1, head0)
    }
    function radiansTowardXY(x, y, x1, y1) {
        return Math.atan2(y1 - y, x1 - x)
    }
    function headingTowardXY(x, y, x1, y1) {
        return radToHeading(radiansTowardXY(x, y, x1, y1))
    }
    function degreesTowardXY(x, y, x1, y1) {
        return radToDeg(radiansTowardXY(x, y, x1, y1))
    }
    const sqDistance = (x, y, x1, y1) => (x - x1) ** 2 + (y - y1) ** 2;
    const distance = (x, y, x1, y1) => Math.sqrt(sqDistance(x, y, x1, y1));
    const sqDistance3 = (x, y, z, x1, y1, z1) =>
        (x - x1) ** 2 + (y - y1) ** 2 + (z - z1) ** 2;
    const distance3 = (x, y, z, x1, y1, z1) =>
        Math.sqrt(sqDistance3(x, y, z, x1, y1, z1));
    function inCone(x, y, radius, coneAngle, direction, x0, y0) {
        if (sqDistance(x0, y0, x, y) > radius * radius) return false
        const angle12 = radiansTowardXY(x0, y0, x, y);
        return coneAngle / 2 >= Math.abs(subtractRadians(direction, angle12))
    }
    function toJSON$2(obj, indent = 0, topLevelArrayOK = true) {
        let firstCall = topLevelArrayOK;
        const blackList = ['rectCache'];
        const json = JSON.stringify(
            obj,
            (key, val) => {
                if (blackList.includes(key)) {
                    return undefined
                }
                const isAgentArray =
                    Array.isArray(val) &&
                    val.length > 0 &&
                    Number.isInteger(val[0].id);
                if (isAgentArray && !firstCall) {
                    return val.map(v => v.id)
                }
                firstCall = false;
                return val
            },
            indent
        );
        return json
    }
    function sampleModel(model) {
        const obj = {
            ticks: model.ticks,
            model: Object.keys(model),
            patches: model.patches.length,
            patch: model.patches.oneOf(),
            turtles: model.turtles.length,
            turtle: model.turtles.oneOf(),
            links: model.links.length,
            link: model.links.oneOf(),
        };
        const json = toJSON$2(obj);
        return JSON.parse(json)
    }
    const identityFcn = o => o;
    const noopFcn = () => {};
    const propFcn = prop => o => o[prop];
    function arraysEqual$1(a1, a2) {
        if (a1.length !== a2.length) return false
        for (let i = 0; i < a1.length; i++) {
            if (a1[i] !== a2[i]) return false
        }
        return true
    }
    function removeArrayItem(array, item) {
        const ix = array.indexOf(item);
        if (ix !== -1) {
            array.splice(ix, 1);
        } else {
            throw Error(`removeArrayItem: ${item} not in array`)
        }
        return array
    }
    const arraysToString = arrays => arrays.map(a => `${a}`).join(',');
    function forLoop(arrayOrObj, fcn) {
        if (arrayOrObj.slice) {
            for (let i = 0, len = arrayOrObj.length; i < len; i++) {
                fcn(arrayOrObj[i], i, arrayOrObj);
            }
        } else {
            Object.keys(arrayOrObj).forEach(k => fcn(arrayOrObj[k], k, arrayOrObj));
        }
    }
    function repeat(n, f, a = []) {
        for (let i = 0; i < n; i++) f(i, a);
        return a
    }
    function step(n, step, f) {
        for (let i = 0; i < n; i += step) f(i);
    }
    function range(length) {
        return repeat(length, (i, a) => {
            a[i] = i;
        })
    }
    function override(defaults, options) {
        const overrides = defaults;
        forLoop(defaults, (val, key) => {
            if (options[key]) {
                overrides[key] = options[key];
            }
        });
        return overrides
    }
    function concatArrays(array1, array2) {
        const Type = array1.constructor;
        if (Type === Array) {
            return array1.concat(convertArrayType(array2, Array))
        }
        const array = new Type(array1.length + array2.length);
        array.set(array1);
        array.set(array2, array1.length);
        return array
    }
    function objectToString(obj, indent = 2, jsKeys = true) {
        let str = JSON.stringify(obj, null, indent);
        if (jsKeys) str = str.replace(/"([^"]+)":/gm, '$1:');
        return str
    }
    const objectsEqual = (a, b) => JSON.stringify(a) === JSON.stringify(b);
    function oneOf(array) {
        return array[randomInt(array.length)]
    }
    function otherOneOf(array, item) {
        if (array.length < 2) throw Error('otherOneOf: array.length < 2')
        do {
            var other = oneOf(array);
        } while (item === other)
        return other
    }
    const oneKeyOf = obj => oneOf(Object.keys(obj));
    const oneValOf = obj => obj[oneKeyOf(obj)];
    function sortNums(array, ascending = true) {
        return array.sort((a, b) => (ascending ? a - b : b - a))
    }
    function sortObjs(array, fcn, ascending = true) {
        if (typeof fcn === 'string') fcn = propFcn(fcn);
        const comp = (a, b) => fcn(a) - fcn(b);
        return array.sort((a, b) => (ascending ? comp(a, b) : -comp(a, b)))
    }
    function shuffle(array) {
        for (let i = array.length - 1; i > 0; i--) {
            const j = randomInt(i)
            ;[array[j], array[i]] = [array[i], array[j]];
        }
        return array
    }
    function union(a1, a2) {
        return Array.from(new Set(a1.concat(a2)))
    }
    function intersection(a1, a2) {
        const set2 = new Set(a2);
        return a1.filter(x => set2.has(x))
    }
    function difference(a1, a2) {
        const set2 = new Set(a2);
        return a1.filter(x => !set2.has(x))
    }
    function floatRamp(start, stop, numItems) {
        if (numItems <= 1) throw Error('floatRamp: numItems must be > 1')
        const a = [];
        for (let i = 0; i < numItems; i++) {
            a.push(start + (stop - start) * (i / (numItems - 1)));
        }
        return a
    }
    function integerRamp(start, stop, numItems = stop - start + 1) {
        return floatRamp(start, stop, numItems).map(a => Math.round(a))
    }
    function nestedProperty(obj, path) {
        if (typeof path === 'string') path = path.split('.');
        switch (path.length) {
            case 1:
                return obj[path[0]]
            case 2:
                return obj[path[0]][path[1]]
            case 3:
                return obj[path[0]][path[1]][path[2]]
            case 4:
                return obj[path[0]][path[1]][path[2]][path[3]]
            default:
                return path.reduce((obj, param) => obj[param], obj)
        }
    }
    const arrayLast = array => array[array.length - 1];
    const arrayMax$1 = array => array.reduce((a, b) => Math.max(a, b));
    const arrayMin = array => array.reduce((a, b) => Math.min(a, b));
    const arrayExtent = array => [arrayMin(array), arrayMax$1(array)];
    const arraysDiff = (a1, a2, ifcn = i => i) => {
        if (a1.length !== a2.length)
            return console.log('lengths differ', a1.length, a2.length)
        const diffs = [];
        for (let i = 0; i < a1.length; i++) {
            if (a1[i] !== a2[i]) diffs.push([ifcn(i), a1[i], a2[i]]);
        }
        return diffs
    };
    function arrayToMatrix(array, width, height) {
        if (array.length !== width * height)
            throw Error('arrayToMatrix: length !== width * height')
        const matrix = [];
        for (let i = 0; i < height; i++) {
            const row = array.slice(i * width, (i + 1) * width);
            matrix.push(row);
        }
        return matrix
    }
    const matrixToArray = matrix => matrix.flat();
    function isOofA(data) {
        if (!isObject$1(data)) return false
        return Object.values(data).every(v => isTypedArray(v))
    }
    function toOofA(aofo, spec) {
        const length = aofo.length;
        const keys = Object.keys(spec);
        const oofa = {};
        keys.forEach(k => {
            oofa[k] = new spec[k](length);
        });
        forLoop(aofo, (o, i) => {
            keys.forEach(key => (oofa[key][i] = o[key]));
        });
        return oofa
    }
    function oofaObject(oofa, i, keys) {
        const obj = {};
        keys.forEach(key => {
            obj[key] = oofa[key][i];
        });
        return obj
    }
    function toAofO(oofa, keys = Object.keys(oofa)) {
        const length = oofa[keys[0]].length;
        const aofo = new Array(length);
        forLoop(aofo, (val, i) => {
            aofo[i] = oofaObject(oofa, i, keys);
        });
        return aofo
    }
    function oofaBuffers(postData) {
        const buffers = [];
        forLoop(postData, obj => forLoop(obj, a => buffers.push(a.buffer)));
        return buffers
    }
    const typeOf = obj =>
        ({}.toString
            .call(obj)
            .match(/\s(\w+)/)[1]
            .toLowerCase());
    const isType = (obj, string) => typeOf(obj) === string;
    const isOneOfTypes = (obj, array) => array.includes(typeOf(obj));
    const isString = obj => isType(obj, 'string');
    const isObject$1 = obj => isType(obj, 'object');
    const isArray = obj => Array.isArray(obj);
    const isNumber$1 = obj => isType(obj, 'number');
    const isInteger = n => Number.isInteger(n);
    const isFunction = obj => isType(obj, 'function');
    const isImage = obj => isType(obj, 'image');
    const isCanvas = obj =>
        isOneOfTypes(obj, ['htmlcanvaselement', 'offscreencanvas']);
    const isImageable = obj =>
        isOneOfTypes(obj, [
            'image',
            'htmlimageelement',
            'htmlcanvaselement',
            'offscreencanvas',
            'imagebitmap',
        ]);
    const isTypedArray = obj => typeOf(obj.buffer) === 'arraybuffer';
    const isUintArray = obj => /^uint.*array$/.test(typeOf(obj));
    const isIntArray = obj => /^int.*array$/.test(typeOf(obj));
    const isFloatArray = obj => /^float.*array$/.test(typeOf(obj));
    const isArrayLike = obj => isArray(obj) || isTypedArray(obj);
    const isColorLikeArray = obj =>
        isArrayLike(obj) &&
        [3, 4].includes(obj.length) &&
        obj.every(
            i =>
                (isInteger(i) && isBetween(i, 0, 255)) ||
                (isNumber$1(i) && isBetween(i, 0, 1))
        );
    function isLittleEndian() {
        const d32 = new Uint32Array([0x01020304]);
        return new Uint8ClampedArray(d32.buffer)[0] === 4
    }
    function convertArrayType(array, Type) {
        const Type0 = array.constructor;
        if (Type0 === Type) return array
        return Type.from(array)
    }
    function isDataSet(obj) {
        return typeOf(obj) === 'object' && obj.width != null && obj.height != null
    }

    var util = /*#__PURE__*/Object.freeze({
        __proto__: null,
        imagePromise: imagePromise,
        imageToImageBitmap: imageToImageBitmap,
        imageBitmapRendererCtx: imageBitmapRendererCtx,
        imageBitmap2dCtx: imageBitmap2dCtx,
        imageBitmapData: imageBitmapData,
        canvasToBlob: canvasToBlob,
        AsyncFunction: AsyncFunction,
        blobToData: blobToData,
        fetchData: fetchData,
        fetchJson: fetchJson,
        fetchText: fetchText,
        toDataURL: toDataURL,
        blobsEqual: blobsEqual,
        downloadCanvas: downloadCanvas,
        downloadBlob: downloadBlob,
        xhrPromise: xhrPromise,
        pause: pause,
        timeoutLoop: timeoutLoop,
        waitPromise: waitPromise,
        createCanvas: createCanvas,
        createCtx: createCtx,
        cloneCanvas: cloneCanvas,
        resizeCtx: resizeCtx,
        resizeCanvas: resizeCanvas,
        setCanvasSize: setCanvasSize,
        setIdentity: setIdentity,
        setTextProperties: setTextProperties,
        drawText: drawText,
        ctxImageData: ctxImageData,
        ctxImageColors: ctxImageColors,
        ctxImagePixels: ctxImagePixels,
        clearCtx: clearCtx,
        imageToCtx: imageToCtx,
        imageToCanvas: imageToCanvas,
        fillCtxWithImage: fillCtxWithImage,
        setCtxImage: setCtxImage,
        skipErrorChecks: skipErrorChecks,
        checkArg: checkArg$1,
        checkArgs: checkArgs$1,
        logOnce: logOnce,
        warn: warn,
        timeit: timeit,
        fps: fps,
        pps: pps,
        toWindow: toWindow,
        logAll: logAll,
        dump: dump,
        addCssLink: addCssLink,
        fetchCssStyle: fetchCssStyle,
        addCssStyle: addCssStyle,
        getQueryString: getQueryString,
        parseQueryString: parseQueryString,
        RESTapi: RESTapi,
        inWorker: inWorker,
        inNode: inNode,
        inDeno: inDeno,
        printToPage: printToPage,
        getEventXY: getEventXY,
        fcnToWorker: fcnToWorker,
        PI: PI$2,
        randomInt: randomInt,
        randomInt2: randomInt2,
        randomFloat: randomFloat,
        randomFloat2: randomFloat2,
        randomCentered: randomCentered,
        randomNormal: randomNormal,
        randomSeed: randomSeed,
        precision: precision,
        isPowerOf2: isPowerOf2,
        nextPowerOf2: nextPowerOf2,
        mod: mod,
        wrap: wrap,
        clamp: clamp,
        isBetween: isBetween,
        lerp: lerp,
        lerpScale: lerpScale,
        toDeg: toDeg$1,
        toRad: toRad$1,
        degToRad: degToRad,
        radToDeg: radToDeg,
        radToHeading: radToHeading,
        headingToRad: headingToRad,
        radToHeadingAngle: radToHeadingAngle,
        headingAngleToRad: headingAngleToRad,
        degToHeading: degToHeading,
        headingToDeg: headingToDeg,
        mod360: mod360,
        mod2pi: mod2pi,
        modpipi: modpipi,
        mod180180: mod180180,
        degreesEqual: degreesEqual,
        radsEqual: radsEqual,
        headingsEq: headingsEq,
        subtractRadians: subtractRadians,
        subtractDegrees: subtractDegrees,
        subtractHeadings: subtractHeadings,
        radiansTowardXY: radiansTowardXY,
        headingTowardXY: headingTowardXY,
        degreesTowardXY: degreesTowardXY,
        sqDistance: sqDistance,
        distance: distance,
        sqDistance3: sqDistance3,
        distance3: distance3,
        inCone: inCone,
        toJSON: toJSON$2,
        sampleModel: sampleModel,
        identityFcn: identityFcn,
        noopFcn: noopFcn,
        propFcn: propFcn,
        arraysEqual: arraysEqual$1,
        removeArrayItem: removeArrayItem,
        arraysToString: arraysToString,
        forLoop: forLoop,
        repeat: repeat,
        step: step,
        range: range,
        override: override,
        concatArrays: concatArrays,
        objectToString: objectToString,
        objectsEqual: objectsEqual,
        oneOf: oneOf,
        otherOneOf: otherOneOf,
        oneKeyOf: oneKeyOf,
        oneValOf: oneValOf,
        sortNums: sortNums,
        sortObjs: sortObjs,
        shuffle: shuffle,
        union: union,
        intersection: intersection,
        difference: difference,
        floatRamp: floatRamp,
        integerRamp: integerRamp,
        nestedProperty: nestedProperty,
        arrayLast: arrayLast,
        arrayMax: arrayMax$1,
        arrayMin: arrayMin,
        arrayExtent: arrayExtent,
        arraysDiff: arraysDiff,
        arrayToMatrix: arrayToMatrix,
        matrixToArray: matrixToArray,
        isOofA: isOofA,
        toOofA: toOofA,
        oofaObject: oofaObject,
        toAofO: toAofO,
        oofaBuffers: oofaBuffers,
        typeOf: typeOf,
        isType: isType,
        isOneOfTypes: isOneOfTypes,
        isString: isString,
        isObject: isObject$1,
        isArray: isArray,
        isNumber: isNumber$1,
        isInteger: isInteger,
        isFunction: isFunction,
        isImage: isImage,
        isCanvas: isCanvas,
        isImageable: isImageable,
        isTypedArray: isTypedArray,
        isUintArray: isUintArray,
        isIntArray: isIntArray,
        isFloatArray: isFloatArray,
        isArrayLike: isArrayLike,
        isColorLikeArray: isColorLikeArray,
        isLittleEndian: isLittleEndian,
        convertArrayType: convertArrayType,
        isDataSet: isDataSet
    });

    async function toContext(img) {
        const type = typeOf(img);
        switch (type) {
            case 'string':
                img = await imagePromise(img);
            case 'htmlimageelement':
                return imageToCtx(img)
            case 'htmlcanvaselement':
            case 'offscreencanvas':
                return img.getContext('2d')
            case 'canvasrenderingcontext2d':
                return img
            default:
                throw Error('toContext: bad img type: ' + type)
        }
    }
    function toUint8Array(msg) {
        const type = typeOf(msg);
        switch (type) {
            case 'number':
                msg = String.fromCharCode(msg);
            case 'string':
                return new TextEncoder().encode(msg)
            case 'uint8array':
            case 'uint8clampedarray':
                return msg
            default:
                throw Error('toUint8Array: bad msg type: ' + type)
        }
    }
    function charToBits(char) {
        return [
            char >> bits[0].shift,
            (char >> bits[1].shift) & bits[1].msgMask,
            char & bits[2].msgMask,
        ]
    }
    const bits = [
        { shift: 5, msgMask: 0b00000111, dataMask: 0b11111000 },
        { shift: 3, msgMask: 0b00000011, dataMask: 0b11111100 },
        { shift: 0, msgMask: 0b00000111, dataMask: 0b11111000 },
    ];
    function checkSize(msg, width, height) {
        const imgSize = width * height;
        if (imgSize < msg.length)
            throw Error(`encode: image size < msg.length: ${imgSize} ${msg.length}`)
    }
    function stegMsgSize(imgData) {
        for (let i = 3; i < imgData.length; i = i + 4) {
            if (imgData[i] === 254) return (i - 3) / 4
        }
        throw Error(
            `decode: no message terminator in image data, length = ${imgData.length}`
        )
    }
    async function encode(img, msg) {
        const ctx = await toContext(img);
        const { width, height } = ctx.canvas;
        checkSize(msg, width, height);
        const msgArray = toUint8Array(msg);
        console.log('msg buffer', msgArray);
        const imageData = ctx.getImageData(0, 0, width, height);
        const data = imageData.data;
        console.log('imgageData.data', data);
        let ix;
        msgArray.forEach((char, i) => {
            const [ch0, ch1, ch2] = charToBits(char);
            ix = i * 4;
            data[ix] = (data[ix++] & bits[0].dataMask) + ch0;
            data[ix] = (data[ix++] & bits[1].dataMask) + ch1;
            data[ix] = (data[ix++] & bits[2].dataMask) + ch2;
            data[ix] = 255;
        });
        data[ix + 4] = 254;
        console.log('encoded imgageData.data', data);
        ctx.putImageData(imageData, 0, 0);
        console.log('msg length', msg.length);
        console.log('encode: embedded msg size', stegMsgSize(data));
        return ctx
    }
    async function decode(img, returnU8 = false) {
        const ctx = await toContext(img);
        const { width, height } = ctx.canvas;
        const data = ctx.getImageData(0, 0, width, height).data;
        const msgSize = stegMsgSize(data);
        console.log('decode: embedded msg size', msgSize);
        const msgArray = new Uint8Array(msgSize);
        msgArray.forEach((char, i) => {
            let ix = i * 4;
            const ch0 = (bits[0].msgMask & data[ix++]) << bits[0].shift;
            const ch1 = (bits[1].msgMask & data[ix++]) << bits[1].shift;
            const ch2 = (bits[2].msgMask & data[ix++]) << bits[2].shift;
            msgArray[i] = ch0 + ch1 + ch2;
        });
        console.log('decode msgArray', msgArray);
        if (returnU8) return msgArray
        return new TextDecoder().decode(msgArray)
    }

    var steg = /*#__PURE__*/Object.freeze({
        __proto__: null,
        stegMsgSize: stegMsgSize,
        encode: encode,
        decode: decode
    });

    var earthRadius = 6371008.8;
    var factors = {
        centimeters: earthRadius * 100,
        centimetres: earthRadius * 100,
        degrees: earthRadius / 111325,
        feet: earthRadius * 3.28084,
        inches: earthRadius * 39.37,
        kilometers: earthRadius / 1000,
        kilometres: earthRadius / 1000,
        meters: earthRadius,
        metres: earthRadius,
        miles: earthRadius / 1609.344,
        millimeters: earthRadius * 1000,
        millimetres: earthRadius * 1000,
        nauticalmiles: earthRadius / 1852,
        radians: 1,
        yards: earthRadius * 1.0936,
    };
    var areaFactors = {
        acres: 0.000247105,
        centimeters: 10000,
        centimetres: 10000,
        feet: 10.763910417,
        hectares: 0.0001,
        inches: 1550.003100006,
        kilometers: 0.000001,
        kilometres: 0.000001,
        meters: 1,
        metres: 1,
        miles: 3.86e-7,
        millimeters: 1000000,
        millimetres: 1000000,
        yards: 1.195990046,
    };
    function feature(geom, properties, options) {
        if (options === void 0) { options = {}; }
        var feat = { type: "Feature" };
        if (options.id === 0 || options.id) {
            feat.id = options.id;
        }
        if (options.bbox) {
            feat.bbox = options.bbox;
        }
        feat.properties = properties || {};
        feat.geometry = geom;
        return feat;
    }
    function geometry(type, coordinates, _options) {
        switch (type) {
            case "Point":
                return point(coordinates).geometry;
            case "LineString":
                return lineString(coordinates).geometry;
            case "Polygon":
                return polygon(coordinates).geometry;
            case "MultiPoint":
                return multiPoint(coordinates).geometry;
            case "MultiLineString":
                return multiLineString(coordinates).geometry;
            case "MultiPolygon":
                return multiPolygon(coordinates).geometry;
            default:
                throw new Error(type + " is invalid");
        }
    }
    function point(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        if (!coordinates) {
            throw new Error("coordinates is required");
        }
        if (!Array.isArray(coordinates)) {
            throw new Error("coordinates must be an Array");
        }
        if (coordinates.length < 2) {
            throw new Error("coordinates must be at least 2 numbers long");
        }
        if (!isNumber(coordinates[0]) || !isNumber(coordinates[1])) {
            throw new Error("coordinates must contain numbers");
        }
        var geom = {
            type: "Point",
            coordinates: coordinates,
        };
        return feature(geom, properties, options);
    }
    function points(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        return featureCollection(coordinates.map(function (coords) {
            return point(coords, properties);
        }), options);
    }
    function polygon(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        for (var _i = 0, coordinates_1 = coordinates; _i < coordinates_1.length; _i++) {
            var ring = coordinates_1[_i];
            if (ring.length < 4) {
                throw new Error("Each LinearRing of a Polygon must have 4 or more Positions.");
            }
            for (var j = 0; j < ring[ring.length - 1].length; j++) {
                if (ring[ring.length - 1][j] !== ring[0][j]) {
                    throw new Error("First and last Position are not equivalent.");
                }
            }
        }
        var geom = {
            type: "Polygon",
            coordinates: coordinates,
        };
        return feature(geom, properties, options);
    }
    function polygons(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        return featureCollection(coordinates.map(function (coords) {
            return polygon(coords, properties);
        }), options);
    }
    function lineString(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        if (coordinates.length < 2) {
            throw new Error("coordinates must be an array of two or more positions");
        }
        var geom = {
            type: "LineString",
            coordinates: coordinates,
        };
        return feature(geom, properties, options);
    }
    function lineStrings(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        return featureCollection(coordinates.map(function (coords) {
            return lineString(coords, properties);
        }), options);
    }
    function featureCollection(features, options) {
        if (options === void 0) { options = {}; }
        var fc = { type: "FeatureCollection" };
        if (options.id) {
            fc.id = options.id;
        }
        if (options.bbox) {
            fc.bbox = options.bbox;
        }
        fc.features = features;
        return fc;
    }
    function multiLineString(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        var geom = {
            type: "MultiLineString",
            coordinates: coordinates,
        };
        return feature(geom, properties, options);
    }
    function multiPoint(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        var geom = {
            type: "MultiPoint",
            coordinates: coordinates,
        };
        return feature(geom, properties, options);
    }
    function multiPolygon(coordinates, properties, options) {
        if (options === void 0) { options = {}; }
        var geom = {
            type: "MultiPolygon",
            coordinates: coordinates,
        };
        return feature(geom, properties, options);
    }
    function geometryCollection(geometries, properties, options) {
        if (options === void 0) { options = {}; }
        var geom = {
            type: "GeometryCollection",
            geometries: geometries,
        };
        return feature(geom, properties, options);
    }
    function radiansToLength(radians, units) {
        if (units === void 0) { units = "kilometers"; }
        var factor = factors[units];
        if (!factor) {
            throw new Error(units + " units is invalid");
        }
        return radians * factor;
    }
    function lengthToRadians(distance, units) {
        if (units === void 0) { units = "kilometers"; }
        var factor = factors[units];
        if (!factor) {
            throw new Error(units + " units is invalid");
        }
        return distance / factor;
    }
    function lengthToDegrees(distance, units) {
        return radiansToDegrees(lengthToRadians(distance, units));
    }
    function bearingToAzimuth(bearing) {
        var angle = bearing % 360;
        if (angle < 0) {
            angle += 360;
        }
        return angle;
    }
    function radiansToDegrees(radians) {
        var degrees = radians % (2 * Math.PI);
        return (degrees * 180) / Math.PI;
    }
    function convertLength(length, originalUnit, finalUnit) {
        if (originalUnit === void 0) { originalUnit = "kilometers"; }
        if (finalUnit === void 0) { finalUnit = "kilometers"; }
        if (!(length >= 0)) {
            throw new Error("length must be a positive number");
        }
        return radiansToLength(lengthToRadians(length, originalUnit), finalUnit);
    }
    function convertArea(area, originalUnit, finalUnit) {
        if (originalUnit === void 0) { originalUnit = "meters"; }
        if (finalUnit === void 0) { finalUnit = "kilometers"; }
        if (!(area >= 0)) {
            throw new Error("area must be a positive number");
        }
        var startFactor = areaFactors[originalUnit];
        if (!startFactor) {
            throw new Error("invalid original units");
        }
        var finalFactor = areaFactors[finalUnit];
        if (!finalFactor) {
            throw new Error("invalid final units");
        }
        return (area / startFactor) * finalFactor;
    }
    function isNumber(num) {
        return !isNaN(num) && num !== null && !Array.isArray(num);
    }
    function isObject(input) {
        return !!input && input.constructor === Object;
    }
    function coordEach(geojson, callback, excludeWrapCoord) {
      if (geojson === null) return;
      var j,
        k,
        l,
        geometry,
        stopG,
        coords,
        geometryMaybeCollection,
        wrapShrink = 0,
        coordIndex = 0,
        isGeometryCollection,
        type = geojson.type,
        isFeatureCollection = type === "FeatureCollection",
        isFeature = type === "Feature",
        stop = isFeatureCollection ? geojson.features.length : 1;
      for (var featureIndex = 0; featureIndex < stop; featureIndex++) {
        geometryMaybeCollection = isFeatureCollection
          ? geojson.features[featureIndex].geometry
          : isFeature
          ? geojson.geometry
          : geojson;
        isGeometryCollection = geometryMaybeCollection
          ? geometryMaybeCollection.type === "GeometryCollection"
          : false;
        stopG = isGeometryCollection
          ? geometryMaybeCollection.geometries.length
          : 1;
        for (var geomIndex = 0; geomIndex < stopG; geomIndex++) {
          var multiFeatureIndex = 0;
          var geometryIndex = 0;
          geometry = isGeometryCollection
            ? geometryMaybeCollection.geometries[geomIndex]
            : geometryMaybeCollection;
          if (geometry === null) continue;
          coords = geometry.coordinates;
          var geomType = geometry.type;
          wrapShrink =
            excludeWrapCoord &&
            (geomType === "Polygon" || geomType === "MultiPolygon")
              ? 1
              : 0;
          switch (geomType) {
            case null:
              break;
            case "Point":
              if (
                callback(
                  coords,
                  coordIndex,
                  featureIndex,
                  multiFeatureIndex,
                  geometryIndex
                ) === false
              )
                return false;
              coordIndex++;
              multiFeatureIndex++;
              break;
            case "LineString":
            case "MultiPoint":
              for (j = 0; j < coords.length; j++) {
                if (
                  callback(
                    coords[j],
                    coordIndex,
                    featureIndex,
                    multiFeatureIndex,
                    geometryIndex
                  ) === false
                )
                  return false;
                coordIndex++;
                if (geomType === "MultiPoint") multiFeatureIndex++;
              }
              if (geomType === "LineString") multiFeatureIndex++;
              break;
            case "Polygon":
            case "MultiLineString":
              for (j = 0; j < coords.length; j++) {
                for (k = 0; k < coords[j].length - wrapShrink; k++) {
                  if (
                    callback(
                      coords[j][k],
                      coordIndex,
                      featureIndex,
                      multiFeatureIndex,
                      geometryIndex
                    ) === false
                  )
                    return false;
                  coordIndex++;
                }
                if (geomType === "MultiLineString") multiFeatureIndex++;
                if (geomType === "Polygon") geometryIndex++;
              }
              if (geomType === "Polygon") multiFeatureIndex++;
              break;
            case "MultiPolygon":
              for (j = 0; j < coords.length; j++) {
                geometryIndex = 0;
                for (k = 0; k < coords[j].length; k++) {
                  for (l = 0; l < coords[j][k].length - wrapShrink; l++) {
                    if (
                      callback(
                        coords[j][k][l],
                        coordIndex,
                        featureIndex,
                        multiFeatureIndex,
                        geometryIndex
                      ) === false
                    )
                      return false;
                    coordIndex++;
                  }
                  geometryIndex++;
                }
                multiFeatureIndex++;
              }
              break;
            case "GeometryCollection":
              for (j = 0; j < geometry.geometries.length; j++)
                if (
                  coordEach(geometry.geometries[j], callback, excludeWrapCoord) ===
                  false
                )
                  return false;
              break;
            default:
              throw new Error("Unknown Geometry Type");
          }
        }
      }
    }
    function coordReduce(geojson, callback, initialValue, excludeWrapCoord) {
      var previousValue = initialValue;
      coordEach(
        geojson,
        function (
          currentCoord,
          coordIndex,
          featureIndex,
          multiFeatureIndex,
          geometryIndex
        ) {
          if (coordIndex === 0 && initialValue === undefined)
            previousValue = currentCoord;
          else
            previousValue = callback(
              previousValue,
              currentCoord,
              coordIndex,
              featureIndex,
              multiFeatureIndex,
              geometryIndex
            );
        },
        excludeWrapCoord
      );
      return previousValue;
    }
    function propEach(geojson, callback) {
      var i;
      switch (geojson.type) {
        case "FeatureCollection":
          for (i = 0; i < geojson.features.length; i++) {
            if (callback(geojson.features[i].properties, i) === false) break;
          }
          break;
        case "Feature":
          callback(geojson.properties, 0);
          break;
      }
    }
    function propReduce(geojson, callback, initialValue) {
      var previousValue = initialValue;
      propEach(geojson, function (currentProperties, featureIndex) {
        if (featureIndex === 0 && initialValue === undefined)
          previousValue = currentProperties;
        else
          previousValue = callback(previousValue, currentProperties, featureIndex);
      });
      return previousValue;
    }
    function featureEach(geojson, callback) {
      if (geojson.type === "Feature") {
        callback(geojson, 0);
      } else if (geojson.type === "FeatureCollection") {
        for (var i = 0; i < geojson.features.length; i++) {
          if (callback(geojson.features[i], i) === false) break;
        }
      }
    }
    function featureReduce(geojson, callback, initialValue) {
      var previousValue = initialValue;
      featureEach(geojson, function (currentFeature, featureIndex) {
        if (featureIndex === 0 && initialValue === undefined)
          previousValue = currentFeature;
        else previousValue = callback(previousValue, currentFeature, featureIndex);
      });
      return previousValue;
    }
    function coordAll(geojson) {
      var coords = [];
      coordEach(geojson, function (coord) {
        coords.push(coord);
      });
      return coords;
    }
    function geomEach(geojson, callback) {
      var i,
        j,
        g,
        geometry,
        stopG,
        geometryMaybeCollection,
        isGeometryCollection,
        featureProperties,
        featureBBox,
        featureId,
        featureIndex = 0,
        isFeatureCollection = geojson.type === "FeatureCollection",
        isFeature = geojson.type === "Feature",
        stop = isFeatureCollection ? geojson.features.length : 1;
      for (i = 0; i < stop; i++) {
        geometryMaybeCollection = isFeatureCollection
          ? geojson.features[i].geometry
          : isFeature
          ? geojson.geometry
          : geojson;
        featureProperties = isFeatureCollection
          ? geojson.features[i].properties
          : isFeature
          ? geojson.properties
          : {};
        featureBBox = isFeatureCollection
          ? geojson.features[i].bbox
          : isFeature
          ? geojson.bbox
          : undefined;
        featureId = isFeatureCollection
          ? geojson.features[i].id
          : isFeature
          ? geojson.id
          : undefined;
        isGeometryCollection = geometryMaybeCollection
          ? geometryMaybeCollection.type === "GeometryCollection"
          : false;
        stopG = isGeometryCollection
          ? geometryMaybeCollection.geometries.length
          : 1;
        for (g = 0; g < stopG; g++) {
          geometry = isGeometryCollection
            ? geometryMaybeCollection.geometries[g]
            : geometryMaybeCollection;
          if (geometry === null) {
            if (
              callback(
                null,
                featureIndex,
                featureProperties,
                featureBBox,
                featureId
              ) === false
            )
              return false;
            continue;
          }
          switch (geometry.type) {
            case "Point":
            case "LineString":
            case "MultiPoint":
            case "Polygon":
            case "MultiLineString":
            case "MultiPolygon": {
              if (
                callback(
                  geometry,
                  featureIndex,
                  featureProperties,
                  featureBBox,
                  featureId
                ) === false
              )
                return false;
              break;
            }
            case "GeometryCollection": {
              for (j = 0; j < geometry.geometries.length; j++) {
                if (
                  callback(
                    geometry.geometries[j],
                    featureIndex,
                    featureProperties,
                    featureBBox,
                    featureId
                  ) === false
                )
                  return false;
              }
              break;
            }
            default:
              throw new Error("Unknown Geometry Type");
          }
        }
        featureIndex++;
      }
    }
    function geomReduce(geojson, callback, initialValue) {
      var previousValue = initialValue;
      geomEach(
        geojson,
        function (
          currentGeometry,
          featureIndex,
          featureProperties,
          featureBBox,
          featureId
        ) {
          if (featureIndex === 0 && initialValue === undefined)
            previousValue = currentGeometry;
          else
            previousValue = callback(
              previousValue,
              currentGeometry,
              featureIndex,
              featureProperties,
              featureBBox,
              featureId
            );
        }
      );
      return previousValue;
    }
    function flattenEach(geojson, callback) {
      geomEach(geojson, function (geometry, featureIndex, properties, bbox, id) {
        var type = geometry === null ? null : geometry.type;
        switch (type) {
          case null:
          case "Point":
          case "LineString":
          case "Polygon":
            if (
              callback(
                feature(geometry, properties, { bbox: bbox, id: id }),
                featureIndex,
                0
              ) === false
            )
              return false;
            return;
        }
        var geomType;
        switch (type) {
          case "MultiPoint":
            geomType = "Point";
            break;
          case "MultiLineString":
            geomType = "LineString";
            break;
          case "MultiPolygon":
            geomType = "Polygon";
            break;
        }
        for (
          var multiFeatureIndex = 0;
          multiFeatureIndex < geometry.coordinates.length;
          multiFeatureIndex++
        ) {
          var coordinate = geometry.coordinates[multiFeatureIndex];
          var geom = {
            type: geomType,
            coordinates: coordinate,
          };
          if (
            callback(feature(geom, properties), featureIndex, multiFeatureIndex) ===
            false
          )
            return false;
        }
      });
    }
    function flattenReduce(geojson, callback, initialValue) {
      var previousValue = initialValue;
      flattenEach(
        geojson,
        function (currentFeature, featureIndex, multiFeatureIndex) {
          if (
            featureIndex === 0 &&
            multiFeatureIndex === 0 &&
            initialValue === undefined
          )
            previousValue = currentFeature;
          else
            previousValue = callback(
              previousValue,
              currentFeature,
              featureIndex,
              multiFeatureIndex
            );
        }
      );
      return previousValue;
    }
    function segmentEach(geojson, callback) {
      flattenEach(geojson, function (feature, featureIndex, multiFeatureIndex) {
        var segmentIndex = 0;
        if (!feature.geometry) return;
        var type = feature.geometry.type;
        if (type === "Point" || type === "MultiPoint") return;
        var previousCoords;
        var previousFeatureIndex = 0;
        var previousMultiIndex = 0;
        var prevGeomIndex = 0;
        if (
          coordEach(
            feature,
            function (
              currentCoord,
              coordIndex,
              featureIndexCoord,
              multiPartIndexCoord,
              geometryIndex
            ) {
              if (
                previousCoords === undefined ||
                featureIndex > previousFeatureIndex ||
                multiPartIndexCoord > previousMultiIndex ||
                geometryIndex > prevGeomIndex
              ) {
                previousCoords = currentCoord;
                previousFeatureIndex = featureIndex;
                previousMultiIndex = multiPartIndexCoord;
                prevGeomIndex = geometryIndex;
                segmentIndex = 0;
                return;
              }
              var currentSegment = lineString(
                [previousCoords, currentCoord],
                feature.properties
              );
              if (
                callback(
                  currentSegment,
                  featureIndex,
                  multiFeatureIndex,
                  geometryIndex,
                  segmentIndex
                ) === false
              )
                return false;
              segmentIndex++;
              previousCoords = currentCoord;
            }
          ) === false
        )
          return false;
      });
    }
    function segmentReduce(geojson, callback, initialValue) {
      var previousValue = initialValue;
      var started = false;
      segmentEach(
        geojson,
        function (
          currentSegment,
          featureIndex,
          multiFeatureIndex,
          geometryIndex,
          segmentIndex
        ) {
          if (started === false && initialValue === undefined)
            previousValue = currentSegment;
          else
            previousValue = callback(
              previousValue,
              currentSegment,
              featureIndex,
              multiFeatureIndex,
              geometryIndex,
              segmentIndex
            );
          started = true;
        }
      );
      return previousValue;
    }
    function lineEach(geojson, callback) {
      if (!geojson) throw new Error("geojson is required");
      flattenEach(geojson, function (feature, featureIndex, multiFeatureIndex) {
        if (feature.geometry === null) return;
        var type = feature.geometry.type;
        var coords = feature.geometry.coordinates;
        switch (type) {
          case "LineString":
            if (callback(feature, featureIndex, multiFeatureIndex, 0, 0) === false)
              return false;
            break;
          case "Polygon":
            for (
              var geometryIndex = 0;
              geometryIndex < coords.length;
              geometryIndex++
            ) {
              if (
                callback(
                  lineString(coords[geometryIndex], feature.properties),
                  featureIndex,
                  multiFeatureIndex,
                  geometryIndex
                ) === false
              )
                return false;
            }
            break;
        }
      });
    }
    function lineReduce(geojson, callback, initialValue) {
      var previousValue = initialValue;
      lineEach(
        geojson,
        function (currentLine, featureIndex, multiFeatureIndex, geometryIndex) {
          if (featureIndex === 0 && initialValue === undefined)
            previousValue = currentLine;
          else
            previousValue = callback(
              previousValue,
              currentLine,
              featureIndex,
              multiFeatureIndex,
              geometryIndex
            );
        }
      );
      return previousValue;
    }
    function findSegment(geojson, options) {
      options = options || {};
      if (!isObject(options)) throw new Error("options is invalid");
      var featureIndex = options.featureIndex || 0;
      var multiFeatureIndex = options.multiFeatureIndex || 0;
      var geometryIndex = options.geometryIndex || 0;
      var segmentIndex = options.segmentIndex || 0;
      var properties = options.properties;
      var geometry;
      switch (geojson.type) {
        case "FeatureCollection":
          if (featureIndex < 0)
            featureIndex = geojson.features.length + featureIndex;
          properties = properties || geojson.features[featureIndex].properties;
          geometry = geojson.features[featureIndex].geometry;
          break;
        case "Feature":
          properties = properties || geojson.properties;
          geometry = geojson.geometry;
          break;
        case "Point":
        case "MultiPoint":
          return null;
        case "LineString":
        case "Polygon":
        case "MultiLineString":
        case "MultiPolygon":
          geometry = geojson;
          break;
        default:
          throw new Error("geojson is invalid");
      }
      if (geometry === null) return null;
      var coords = geometry.coordinates;
      switch (geometry.type) {
        case "Point":
        case "MultiPoint":
          return null;
        case "LineString":
          if (segmentIndex < 0) segmentIndex = coords.length + segmentIndex - 1;
          return lineString(
            [coords[segmentIndex], coords[segmentIndex + 1]],
            properties,
            options
          );
        case "Polygon":
          if (geometryIndex < 0) geometryIndex = coords.length + geometryIndex;
          if (segmentIndex < 0)
            segmentIndex = coords[geometryIndex].length + segmentIndex - 1;
          return lineString(
            [
              coords[geometryIndex][segmentIndex],
              coords[geometryIndex][segmentIndex + 1],
            ],
            properties,
            options
          );
        case "MultiLineString":
          if (multiFeatureIndex < 0)
            multiFeatureIndex = coords.length + multiFeatureIndex;
          if (segmentIndex < 0)
            segmentIndex = coords[multiFeatureIndex].length + segmentIndex - 1;
          return lineString(
            [
              coords[multiFeatureIndex][segmentIndex],
              coords[multiFeatureIndex][segmentIndex + 1],
            ],
            properties,
            options
          );
        case "MultiPolygon":
          if (multiFeatureIndex < 0)
            multiFeatureIndex = coords.length + multiFeatureIndex;
          if (geometryIndex < 0)
            geometryIndex = coords[multiFeatureIndex].length + geometryIndex;
          if (segmentIndex < 0)
            segmentIndex =
              coords[multiFeatureIndex][geometryIndex].length - segmentIndex - 1;
          return lineString(
            [
              coords[multiFeatureIndex][geometryIndex][segmentIndex],
              coords[multiFeatureIndex][geometryIndex][segmentIndex + 1],
            ],
            properties,
            options
          );
      }
      throw new Error("geojson is invalid");
    }
    function findPoint(geojson, options) {
      options = options || {};
      if (!isObject(options)) throw new Error("options is invalid");
      var featureIndex = options.featureIndex || 0;
      var multiFeatureIndex = options.multiFeatureIndex || 0;
      var geometryIndex = options.geometryIndex || 0;
      var coordIndex = options.coordIndex || 0;
      var properties = options.properties;
      var geometry;
      switch (geojson.type) {
        case "FeatureCollection":
          if (featureIndex < 0)
            featureIndex = geojson.features.length + featureIndex;
          properties = properties || geojson.features[featureIndex].properties;
          geometry = geojson.features[featureIndex].geometry;
          break;
        case "Feature":
          properties = properties || geojson.properties;
          geometry = geojson.geometry;
          break;
        case "Point":
        case "MultiPoint":
          return null;
        case "LineString":
        case "Polygon":
        case "MultiLineString":
        case "MultiPolygon":
          geometry = geojson;
          break;
        default:
          throw new Error("geojson is invalid");
      }
      if (geometry === null) return null;
      var coords = geometry.coordinates;
      switch (geometry.type) {
        case "Point":
          return point(coords, properties, options);
        case "MultiPoint":
          if (multiFeatureIndex < 0)
            multiFeatureIndex = coords.length + multiFeatureIndex;
          return point(coords[multiFeatureIndex], properties, options);
        case "LineString":
          if (coordIndex < 0) coordIndex = coords.length + coordIndex;
          return point(coords[coordIndex], properties, options);
        case "Polygon":
          if (geometryIndex < 0) geometryIndex = coords.length + geometryIndex;
          if (coordIndex < 0)
            coordIndex = coords[geometryIndex].length + coordIndex;
          return point(coords[geometryIndex][coordIndex], properties, options);
        case "MultiLineString":
          if (multiFeatureIndex < 0)
            multiFeatureIndex = coords.length + multiFeatureIndex;
          if (coordIndex < 0)
            coordIndex = coords[multiFeatureIndex].length + coordIndex;
          return point(coords[multiFeatureIndex][coordIndex], properties, options);
        case "MultiPolygon":
          if (multiFeatureIndex < 0)
            multiFeatureIndex = coords.length + multiFeatureIndex;
          if (geometryIndex < 0)
            geometryIndex = coords[multiFeatureIndex].length + geometryIndex;
          if (coordIndex < 0)
            coordIndex =
              coords[multiFeatureIndex][geometryIndex].length - coordIndex;
          return point(
            coords[multiFeatureIndex][geometryIndex][coordIndex],
            properties,
            options
          );
      }
      throw new Error("geojson is invalid");
    }
    function bbox(geojson) {
        var result = [Infinity, Infinity, -Infinity, -Infinity];
        coordEach(geojson, function (coord) {
            if (result[0] > coord[0]) {
                result[0] = coord[0];
            }
            if (result[1] > coord[1]) {
                result[1] = coord[1];
            }
            if (result[2] < coord[0]) {
                result[2] = coord[0];
            }
            if (result[3] < coord[1]) {
                result[3] = coord[1];
            }
        });
        return result;
    }
    bbox["default"] = bbox;
    function bboxPolygon(bbox, options) {
        if (options === void 0) { options = {}; }
        var west = Number(bbox[0]);
        var south = Number(bbox[1]);
        var east = Number(bbox[2]);
        var north = Number(bbox[3]);
        if (bbox.length === 6) {
            throw new Error("@turf/bbox-polygon does not support BBox with 6 positions");
        }
        var lowLeft = [west, south];
        var topLeft = [west, north];
        var topRight = [east, north];
        var lowRight = [east, south];
        return polygon([[lowLeft, lowRight, topRight, topLeft, lowLeft]], options.properties, { bbox: bbox, id: options.id });
    }
    function getCoord(coord) {
        if (!coord) {
            throw new Error("coord is required");
        }
        if (!Array.isArray(coord)) {
            if (coord.type === "Feature" &&
                coord.geometry !== null &&
                coord.geometry.type === "Point") {
                return coord.geometry.coordinates;
            }
            if (coord.type === "Point") {
                return coord.coordinates;
            }
        }
        if (Array.isArray(coord) &&
            coord.length >= 2 &&
            !Array.isArray(coord[0]) &&
            !Array.isArray(coord[1])) {
            return coord;
        }
        throw new Error("coord must be GeoJSON Point or an Array of numbers");
    }
    function getCoords(coords) {
        if (Array.isArray(coords)) {
            return coords;
        }
        if (coords.type === "Feature") {
            if (coords.geometry !== null) {
                return coords.geometry.coordinates;
            }
        }
        else {
            if (coords.coordinates) {
                return coords.coordinates;
            }
        }
        throw new Error("coords must be GeoJSON Feature, Geometry Object or an Array");
    }
    function containsNumber(coordinates) {
        if (coordinates.length > 1 &&
            isNumber(coordinates[0]) &&
            isNumber(coordinates[1])) {
            return true;
        }
        if (Array.isArray(coordinates[0]) && coordinates[0].length) {
            return containsNumber(coordinates[0]);
        }
        throw new Error("coordinates must only contain numbers");
    }
    function geojsonType(value, type, name) {
        if (!type || !name) {
            throw new Error("type and name required");
        }
        if (!value || value.type !== type) {
            throw new Error("Invalid input to " +
                name +
                ": must be a " +
                type +
                ", given " +
                value.type);
        }
    }
    function featureOf(feature, type, name) {
        if (!feature) {
            throw new Error("No feature passed");
        }
        if (!name) {
            throw new Error(".featureOf() requires a name");
        }
        if (!feature || feature.type !== "Feature" || !feature.geometry) {
            throw new Error("Invalid input to " + name + ", Feature with geometry required");
        }
        if (!feature.geometry || feature.geometry.type !== type) {
            throw new Error("Invalid input to " +
                name +
                ": must be a " +
                type +
                ", given " +
                feature.geometry.type);
        }
    }
    function collectionOf(featureCollection, type, name) {
        if (!featureCollection) {
            throw new Error("No featureCollection passed");
        }
        if (!name) {
            throw new Error(".collectionOf() requires a name");
        }
        if (!featureCollection || featureCollection.type !== "FeatureCollection") {
            throw new Error("Invalid input to " + name + ", FeatureCollection required");
        }
        for (var _i = 0, _a = featureCollection.features; _i < _a.length; _i++) {
            var feature = _a[_i];
            if (!feature || feature.type !== "Feature" || !feature.geometry) {
                throw new Error("Invalid input to " + name + ", Feature with geometry required");
            }
            if (!feature.geometry || feature.geometry.type !== type) {
                throw new Error("Invalid input to " +
                    name +
                    ": must be a " +
                    type +
                    ", given " +
                    feature.geometry.type);
            }
        }
    }
    function getGeom(geojson) {
        if (geojson.type === "Feature") {
            return geojson.geometry;
        }
        return geojson;
    }
    function getType(geojson, _name) {
        if (geojson.type === "FeatureCollection") {
            return "FeatureCollection";
        }
        if (geojson.type === "GeometryCollection") {
            return "GeometryCollection";
        }
        if (geojson.type === "Feature" && geojson.geometry !== null) {
            return geojson.geometry.type;
        }
        return geojson.type;
    }
    function booleanPointInPolygon(point, polygon, options) {
        if (options === void 0) { options = {}; }
        if (!point) {
            throw new Error("point is required");
        }
        if (!polygon) {
            throw new Error("polygon is required");
        }
        var pt = getCoord(point);
        var geom = getGeom(polygon);
        var type = geom.type;
        var bbox = polygon.bbox;
        var polys = geom.coordinates;
        if (bbox && inBBox(pt, bbox) === false) {
            return false;
        }
        if (type === "Polygon") {
            polys = [polys];
        }
        var insidePoly = false;
        for (var i = 0; i < polys.length && !insidePoly; i++) {
            if (inRing(pt, polys[i][0], options.ignoreBoundary)) {
                var inHole = false;
                var k = 1;
                while (k < polys[i].length && !inHole) {
                    if (inRing(pt, polys[i][k], !options.ignoreBoundary)) {
                        inHole = true;
                    }
                    k++;
                }
                if (!inHole) {
                    insidePoly = true;
                }
            }
        }
        return insidePoly;
    }
    function inRing(pt, ring, ignoreBoundary) {
        var isInside = false;
        if (ring[0][0] === ring[ring.length - 1][0] &&
            ring[0][1] === ring[ring.length - 1][1]) {
            ring = ring.slice(0, ring.length - 1);
        }
        for (var i = 0, j = ring.length - 1; i < ring.length; j = i++) {
            var xi = ring[i][0];
            var yi = ring[i][1];
            var xj = ring[j][0];
            var yj = ring[j][1];
            var onBoundary = pt[1] * (xi - xj) + yi * (xj - pt[0]) + yj * (pt[0] - xi) === 0 &&
                (xi - pt[0]) * (xj - pt[0]) <= 0 &&
                (yi - pt[1]) * (yj - pt[1]) <= 0;
            if (onBoundary) {
                return !ignoreBoundary;
            }
            var intersect = yi > pt[1] !== yj > pt[1] &&
                pt[0] < ((xj - xi) * (pt[1] - yi)) / (yj - yi) + xi;
            if (intersect) {
                isInside = !isInside;
            }
        }
        return isInside;
    }
    function inBBox(pt, bbox) {
        return (bbox[0] <= pt[0] && bbox[1] <= pt[1] && bbox[2] >= pt[0] && bbox[3] >= pt[1]);
    }

    var turfImports = /*#__PURE__*/Object.freeze({
        __proto__: null,
        bbox: bbox,
        bboxPolygon: bboxPolygon,
        bearingToAzimuth: bearingToAzimuth,
        booleanPointInPolygon: booleanPointInPolygon,
        collectionOf: collectionOf,
        containsNumber: containsNumber,
        convertArea: convertArea,
        convertLength: convertLength,
        coordAll: coordAll,
        coordEach: coordEach,
        coordReduce: coordReduce,
        feature: feature,
        featureCollection: featureCollection,
        featureEach: featureEach,
        featureOf: featureOf,
        featureReduce: featureReduce,
        findPoint: findPoint,
        findSegment: findSegment,
        flattenEach: flattenEach,
        flattenReduce: flattenReduce,
        geojsonType: geojsonType,
        geomEach: geomEach,
        geomReduce: geomReduce,
        geometry: geometry,
        geometryCollection: geometryCollection,
        getCoord: getCoord,
        getCoords: getCoords,
        getGeom: getGeom,
        getType: getType,
        lengthToDegrees: lengthToDegrees,
        lengthToRadians: lengthToRadians,
        lineEach: lineEach,
        lineReduce: lineReduce,
        lineString: lineString,
        lineStrings: lineStrings,
        multiLineString: multiLineString,
        multiPoint: multiPoint,
        multiPolygon: multiPolygon,
        point: point,
        points: points,
        polygon: polygon,
        polygons: polygons,
        propEach: propEach,
        propReduce: propReduce,
        radiansToLength: radiansToLength,
        segmentEach: segmentEach,
        segmentReduce: segmentReduce
    });

    class AgentArray extends Array {
        static get [Symbol.species]() {
            return AgentArray
        }
        static fromArray(array) {
            const aarray = Object.setPrototypeOf(array, AgentArray.prototype);
            return aarray
        }
        constructor(...args) {
            super(...args);
        }
        toArray() {
            Object.setPrototypeOf(this, Array.prototype);
            return this
        }
        isEmpty() {
            return this.length === 0
        }
        first() {
            return this[0]
        }
        last() {
            return this[this.length - 1]
        }
        atIndex(i) {
            if (this.length === 0) return undefined
            const index = mod(i, this.length);
            return this[index]
        }
        all(fcn) {
            return this.every(fcn)
        }
        props(key, type = AgentArray) {
            const result = new type(this.length);
            for (let i = 0; i < this.length; i++) {
                result[i] = this[i][key];
            }
            return result
        }
        typedSample(obj) {
            const result = {};
            forLoop(obj, (val, key) => {
                result[key] = this.props(key, val);
            });
            return result
        }
        uniq() {
            return AgentArray.from(new Set(this))
        }
        forLoop(fcn) {
            for (let i = 0, len = this.length; i < len; i++) {
                fcn(this[i], i, this);
            }
            return this
        }
        ask(fcn) {
            const length = this.length;
            for (let i = 0; i < Math.min(length, this.length); i++) {
                fcn(this[i], i, this);
            }
            if (length != this.length) {
                const name = this.name || this.constructor.name;
                const direction = this.length < length ? 'decreasing' : 'increasing';
                warn(`AgentArray.ask array mutation: ${name}: ${direction}`);
            }
        }
        with(fcn) {
            return this.filter(fcn)
        }
        other(t) {
            return this.filter(o => o !== t)
        }
        getValues(fcn) {
            const props = new AgentArray();
            if (isString(fcn)) {
                this.forLoop(obj => props.push(obj[fcn]));
            } else {
                this.forLoop(obj => props.push(fcn(obj)));
            }
            return props
        }
        count(reporter) {
            return this.reduce((prev, o) => prev + (reporter(o) ? 1 : 0), 0)
        }
        sum(key) {
            return this.reduce((prev, o) => prev + (key ? o[key] : o), 0)
        }
        avg(key) {
            return this.sum(key) / this.length
        }
        min(key) {
            return this.reduce(
                (prev, o) => Math.min(prev, key ? o[key] : o),
                Infinity
            )
        }
        max(key) {
            return this.reduce(
                (prev, o) => Math.max(prev, key ? o[key] : o),
                -Infinity
            )
        }
        extent(key) {
            return [this.min(key), this.max(key)]
        }
        histogram(key, bins = 10, min = this.min(key), max = this.max(key)) {
            const binSize = (max - min) / bins;
            const aa = new AgentArray(bins);
            aa.fill(0);
            this.ask(a => {
                const val = key ? a[key] : a;
                if (val < min || val > max) {
                    warn(`histogram bounds error: ${val}: ${min}-${max}`);
                } else {
                    let bin = Math.floor((val - min) / binSize);
                    if (bin === bins) bin--;
                    aa[bin]++;
                }
            });
            aa.parameters = { key, bins, min, max, binSize, arraySize: this.length };
            return aa
        }
        clone() {
            return this.slice(0)
        }
        shuffle() {
            return shuffle(this)
        }
        sortBy(reporter, ascending = true) {
            sortObjs(this, reporter, ascending);
            return this
        }
        remove(o, f) {
            const i = this.agentIndex(o, f);
            if (i !== -1) this.splice(i, 1);
            else warn(`remove: ${o} not in AgentArray`);
            return this
        }
        insert(o, f) {
            const i = this.sortedIndex(o, f);
            if (this[i] === o) throw Error('insert: item already in AgentArray')
            this.splice(i, 0, o);
        }
        sortedIndex(item, f = identityFcn) {
            if (isString(f)) f = propFcn(f);
            const value = f(item);
            let low = 0;
            let high = this.length;
            while (low < high) {
                const mid = (low + high) >>> 1;
                if (f(this[mid]) < value) {
                    low = mid + 1;
                } else {
                    high = mid;
                }
            }
            return low
        }
        agentIndex(item, property) {
            if (!property) return this.indexOf(item)
            const i = this.sortedIndex(item, property);
            return this[i] === item ? i : -1
        }
        contains(item, f) {
            return this.agentIndex(item, f) >= 0
        }
        oneOf() {
            return oneOf(this)
        }
        otherOneOf(agent) {
            return otherOneOf(this, agent)
        }
        otherNOf(n, item) {
            if (this.length < n) throw Error('AgentArray: otherNOf: length < N')
            return this.clone().remove(item).shuffle().slice(0, n)
        }
        minOrMaxOf(min, reporter, valueToo = false) {
            if (this.isEmpty()) throw Error('min/max OneOf: empty array')
            if (typeof reporter === 'string') reporter = propFcn(reporter);
            let o = null;
            let val = min ? Infinity : -Infinity;
            for (let i = 0; i < this.length; i++) {
                const a = this[i];
                const aval = reporter(a);
                if ((min && aval < val) || (!min && aval > val)) {
    [o, val] = [a, aval];
                }
            }
            return valueToo ? [o, val] : o
        }
        minOneOf(reporter) {
            return this.minOrMaxOf(true, reporter)
        }
        maxOneOf(reporter) {
            return this.minOrMaxOf(false, reporter)
        }
        minValOf(reporter) {
            return this.minOrMaxOf(true, reporter, true)
        }
        maxValOf(reporter) {
            return this.minOrMaxOf(false, reporter, true)
        }
        nOf(n) {
            if (n > this.length) throw Error('nOf: n larger than AgentArray')
            if (n === this.length) return this
            const result = new AgentArray();
            while (result.length < n) {
                const o = this.oneOf();
                if (!(o in result)) result.push(o);
            }
            return result
        }
        minOrMaxNOf(min, n, reporter) {
            if (n > this.length) {
                throw Error('min/max nOf: n larger than AgentArray')
            }
            const as = this.clone().sortBy(reporter);
            return min ? as.slice(0, n) : as.slice(as.length - n)
        }
        minNOf(n, reporter) {
            return this.minOrMaxNOf(true, n, reporter)
        }
        maxNOf(n, reporter) {
            return this.minOrMaxNOf(false, n, reporter)
        }
    }

    class AgentList extends AgentArray {
        constructor(model, ...args) {
            if (!model) throw Error('AgentList requires model')
            super(...args);
            this.model = model;
        }
        inRect(agent, dx, dy = dx, meToo = false) {
            const agents = new AgentList(this.model);
            const minX = agent.x - dx;
            const maxX = agent.x + dx;
            const minY = agent.y - dy;
            const maxY = agent.y + dy;
            this.ask(a => {
                if (minX <= a.x && a.x <= maxX && minY <= a.y && a.y <= maxY) {
                    if (meToo || agent !== a) agents.push(a);
                }
            });
            return agents
        }
        inRadius(agent, radius, meToo = false) {
            const agents = new AgentList(this.model);
            const d2 = radius * radius;
            const sqDistance$1 = sqDistance;
            this.ask(a => {
                if (sqDistance$1(agent.x, agent.y, a.x, a.y) <= d2) {
                    if (meToo || agent !== a) agents.push(a);
                }
            });
            return agents
        }
        inCone(agent, radius, coneAngle, heading, meToo = false) {
            heading = this.model.toRads(heading);
            coneAngle = this.model.toAngleRads(coneAngle);
            const agents = new AgentList(this.model);
            this.ask(a => {
                if (
                    inCone(
                        a.x,
                        a.y,
                        radius,
                        coneAngle,
                        heading,
                        agent.x,
                        agent.y
                    )
                ) {
                    if (meToo || agent !== a) agents.push(a);
                }
            });
            return agents
        }
    }

    class AgentSet extends AgentArray {
        model
        name
        baseSet
        AgentClass
        static get [Symbol.species]() {
            return AgentArray
        }
        constructor(model, AgentClass, name, baseSet = null) {
            super();
            baseSet = baseSet || this;
            Object.assign(this, { model, name, baseSet, AgentClass });
            if (this.isBaseSet()) {
                this.breeds = {};
                this.ID = 0;
            } else {
                Object.setPrototypeOf(this, Object.getPrototypeOf(baseSet));
                this.baseSet.breeds[name] = this;
            }
            this.ownVariables = [];
            this.agentProto = new AgentClass(this);
            this.protoMixin(this.agentProto, AgentClass);
        }
        protoMixin(agentProto, AgentClass) {
            Object.assign(agentProto, {
                agentSet: this,
                model: this.model,
            });
            agentProto[this.baseSet.name] = this.baseSet;
            if (!AgentClass.prototype.setBreed) {
                Object.assign(AgentClass.prototype, {
                    setBreed(breed) {
                        breed.setBreed(this);
                    },
                    getBreed() {
                        return this.agentSet
                    },
                    isBreed(breed) {
                        return this.agentSet === breed
                    },
                });
                Object.defineProperty(AgentClass.prototype, 'breed', {
                    get: function () {
                        return this.agentSet
                    },
                });
            }
        }
        newBreed(name) {
            return new AgentSet(this.model, this.AgentClass, name, this)
        }
        isBreedSet() {
            return this.baseSet !== this
        }
        isBaseSet() {
            return this.baseSet === this
        }
        withBreed(breed) {
            return this.filter(a => a.agentSet === breed)
        }
        create() {
            console.log(`AgentSet: Abstract method called: ${this}`);
        }
        addAgent(o = undefined) {
            o = o || Object.create(this.agentProto);
            if (this.isBreedSet()) {
                this.baseSet.addAgent(o);
            } else {
                o.id = this.ID++;
                if (o.agentConstructor) o.agentConstructor();
            }
            this.push(o);
            return o
        }
        clear() {
            while (!this.isEmpty()) this.last().die();
        }
        removeAgent(o) {
            if (o.id != -1) {
                if (this.isBreedSet()) this.baseSet.remove(o, 'id');
                this.remove(o, 'id');
            }
            return this
        }
        setDefault(name, value) {
            this.agentProto[name] = value;
            return this
        }
        getDefault(name) {
            return this.agentProto[name]
        }
        setBreed(a) {
            if (a.agentSet === this) return
            if (a.agentSet.isBreedSet()) a.agentSet.remove(a, 'id');
            if (this.isBreedSet()) this.insert(a, 'id');
            const avars = a.agentSet.ownVariables;
            for (const avar of avars) {
                if (!this.ownVariables.includes(avar)) delete a[avar];
            }
            for (const ownvar of this.ownVariables) {
                if (!avars.includes(ownvar)) a[ownvar] = 0;
            }
            return Object.setPrototypeOf(a, this.agentProto)
        }
        ask(fcn) {
            if (this.length === 0) return
            const lastID = this.last().id;
            for (let i = 0; i < this.length && this[i].id <= lastID; i++) {
                fcn(this[i], i, this);
            }
        }
        askSet(fcn) {
            if (this.length === 0) return
            if (this.name === 'patches') super.forLoop(fcn);
            else if (this.isBaseSet()) this.baseSetAsk(fcn);
            else if (this.isBreedSet()) this.cloneAsk(fcn);
        }
        baseSetAsk(fcn) {
            if (this.length === 0) return
            const lastID = this.last().id;
            for (let i = 0; i < this.length; i++) {
                const obj = this[i];
                const id = obj.id;
                if (id > lastID) break
                fcn(obj, i, this);
                if (i >= this.length) break
                if (this[i].id > id) {
                    while (i >= 0 && this[i].id > id) i--;
                }
            }
        }
        cloneAsk(fcn) {
            const clone = this.clone();
            for (let i = 0; i < clone.length; i++) {
                const obj = clone[i];
                if (obj.breed == this && obj.id > 0) {
                    fcn(obj, i, clone);
                }
            }
        }
    }

    class DataSet {
        width
        height
        data
        static emptyDataSet(width, height, Type = Array) {
            return new DataSet(width, height, new Type(width * height))
        }
        constructor(width, height, data) {
            if (data.length !== width * height) {
                throw Error(
                    `new DataSet length: ${data.length} !== ${width} * ${height}`
                )
            }
            Object.assign(this, { width, height, data });
        }
        checkXY(x, y) {
            if (!this.inBounds(x, y)) {
                throw Error(`DataSet: x,y out of range: ${x}, ${y}`)
            }
        }
        inBounds(x, y) {
            return (
                isBetween(x, 0, this.width - 1) &&
                isBetween(y, 0, this.height - 1)
            )
        }
        dataType() {
            return this.data.constructor
        }
        type() {
            return this.constructor
        }
        toIndex(x, y) {
            return x + y * this.width
        }
        toXY(i) {
            return [i % this.width, Math.floor(i / this.width)]
        }
        getXY(x, y) {
            return this.data[this.toIndex(x, y)]
        }
        setXY(x, y, num) {
            this.data[this.toIndex(x, y)] = num;
        }
        sample(x, y, useNearest = true) {
            this.checkXY(x, y);
            return useNearest ? this.nearest(x, y) : this.bilinear(x, y)
        }
        nearest(x, y) {
            return this.getXY(Math.round(x), Math.round(y))
        }
        bilinear(x, y) {
            const x0 = Math.floor(x);
            const y0 = Math.floor(y);
            const i = this.toIndex(x0, y0);
            const w = this.width;
            const dx = x - x0;
            const dy = y - y0;
            const dx1 = 1 - dx;
            const dy1 = 1 - dy;
            const f00 = this.data[i];
            const f10 = this.data[i + 1] || 0;
            const f01 = this.data[i + w] || 0;
            const f11 = this.data[i + 1 + w] || 0;
            return f00 * dx1 * dy1 + f10 * dx * dy1 + f01 * dx1 * dy + f11 * dx * dy
        }
        clone() {
            return new DataSet(this.width, this.height, this.data.slice(0))
        }
        emptyDataSet(width, height, type = this.dataType()) {
            return DataSet.emptyDataSet(width, height, type)
        }
        emptyArray(length) {
            const Type = this.type();
            return new Type(length)
        }
        resample(width, height, useNearest = true, Type = Array) {
            if (width === this.width && height === this.height) return this.clone()
            const ds = DataSet.emptyDataSet(width, height, Type);
            for (let y = 0; y < height; y++) {
                for (let x = 0; x < width; x++) {
                    ds.setXY(
                        x,
                        y,
                        this.sample(
                            (x * (this.width - 1)) / (width - 1),
                            (y * (this.height - 1)) / (height - 1),
                            useNearest
                        )
                    );
                }
            }
            return ds
        }
        scale(min, max) {
            const dsMin = this.min();
            const dsMax = this.max();
            const dsDelta = dsMax - dsMin;
            const delta = max - min;
            const m = delta / dsDelta;
            const b = min - m * dsMin;
            return this.map(x => m * x + b)
        }
        subset(x, y, width, height) {
            if (x + width > this.width || y + height > this.height) {
                console.log('subset: x+width', x + width, 'this.width', this.width);
                console.log(
                    'subset: y+height',
                    y + height,
                    'this.height',
                    this.height
                );
                throw Error('DataSet.subSet: params out of range')
            }
            const ds = this.emptyDataSet(width, height);
            for (let i = 0; i < width; i++) {
                for (let j = 0; j < height; j++) {
                    ds.setXY(i, j, this.getXY(i + x, j + y));
                }
            }
            return ds
        }
        crop(top, bottom, left, right) {
            if (bottom === undefined) {
                var { top, bottom, left, right } = top;
            }
            const width = this.width - left - right;
            const height = this.height - top - bottom;
            return this.subset(left, top, width, height)
        }
        map(f) {
            return new DataSet(this.width, this.height, this.data.map(f))
        }
        col(x) {
            const [w, h, data] = [this.width, this.height, this.data];
            if (x >= w) throw Error(`col: x out of range width: ${w} x: ${x}`)
            const colData = this.emptyArray(h);
            for (let i = 0; i < h; i++) colData[i] = data[x + i * w];
            return colData
        }
        row(y) {
            const [w, h] = [this.width, this.height];
            if (y >= h) throw Error(`row: y out of range height: ${h} x: ${y}`)
            return this.data.slice(y * w, (y + 1) * w)
        }
        convertType(type) {
            this.data = convertArrayType(this.data, type);
        }
        concatEast(ds) {
            const [w, h] = [this.width, this.height];
            const [w1, h1] = [ds.width, ds.height];
            if (h !== h1) throw Error(`concatEast: heights not equal ${h}, ${h1}`)
            const ds1 = this.emptyDataSet(w + w1, h);
            for (let x = 0; x < w; x++) {
                for (let y = 0; y < h; y++) {
                    ds1.setXY(x, y, this.getXY(x, y));
                }
            }
            for (let x = 0; x < w1; x++) {
                for (let y = 0; y < h1; y++) {
                    ds1.setXY(x + w, y, ds.getXY(x, y));
                }
            }
            return ds1
        }
        concatSouth(dataset) {
            const [w, h, data] = [this.width, this.height, this.data];
            if (w !== dataset.width) {
                throw Error(`concatSouth: widths not equal ${w}, ${dataset.width}`)
            }
            const data1 = concatArrays(data, dataset.data);
            return new DataSet(w, h + dataset.height, data1)
        }
        transformCoords(x, y, tlx, tly, w, h) {
            const xs = ((x - tlx) * (this.width - 1)) / w;
            const ys = ((tly - y) * (this.height - 1)) / h;
            return [xs, ys]
        }
        coordSample(x, y, tlx, tly, w, h, useNearest = true) {
            const [xs, ys] = this.transformCoords(x, y, tlx, tly, w, h);
            return this.sample(xs, ys, useNearest)
        }
        neighborhood(x, y, array = []) {
            array.length = 0;
            const clampNeeded =
                x === 0 || x === this.width - 1 || y === 0 || y === this.height - 1;
            for (let dy = -1; dy <= +1; dy++) {
                for (let dx = -1; dx <= +1; dx++) {
                    let x0 = x + dx;
                    let y0 = y + dy;
                    if (clampNeeded) {
                        x0 = clamp(x0, 0, this.width - 1);
                        y0 = clamp(y0, 0, this.height - 1);
                    }
                    array.push(this.data[this.toIndex(x0, y0)]);
                }
            }
            return array
        }
        convolve(kernel, factor = 1, crop = false) {
            const [x0, y0, h, w] = crop
                ? [1, 1, this.height - 1, this.width - 1]
                : [0, 0, this.height, this.width];
            const newDS = this.emptyDataSet(w, h);
            const newData = newDS.data;
            let i = 0;
            for (let y = y0; y < h; y++) {
                for (let x = x0; x < w; x++) {
                    const nei = this.neighborhood(x, y);
                    let sum2 = 0;
                    for (let i2 = 0; i2 < kernel.length; i2++) {
                        sum2 = sum2 + kernel[i2] * nei[i2];
                    }
                    newData[i++] = sum2 * factor;
                }
            }
            return newDS
        }
        dzdx(n = 2, factor = 1 / 8) {
            return this.convolve([-1, 0, 1, -n, 0, n, -1, 0, 1], factor)
        }
        dzdy(n = 2, factor = 1 / 8) {
            return this.convolve([1, n, 1, 0, 0, 0, -1, -n, -1], factor)
        }
        laplace8() {
            return this.convolve([-1, -1, -1, -1, 8, -1, -1, -1, -1])
        }
        laplace4() {
            return this.convolve([0, -1, 0, -1, 4, -1, 0, -1, 0])
        }
        blur(factor = 0.0625) {
            return this.convolve([1, 2, 1, 2, 4, 2, 1, 2, 1], factor)
        }
        edge() {
            return this.convolve([1, 1, 1, 1, -7, 1, 1, 1, 1])
        }
        slopeAndAspect(cellSize = 1, posAngle = true) {
            const dzdx = this.dzdx();
            const dzdy = this.dzdy();
            let [aspect, slope] = [[], []];
            const [h, w] = [dzdx.height, dzdx.width];
            for (let y = 0; y < h; y++) {
                for (let x = 0; x < w; x++) {
                    const [gx, gy] = [dzdx.getXY(x, y), dzdy.getXY(x, y)];
                    slope.push(Math.atan(distance(0, 0, gx, gy)) / cellSize);
                    let rad = Math.atan2(-gy, -gx);
                    if (posAngle && rad < 0) rad += 2 * Math.PI;
                    aspect.push(rad);
                }
            }
            slope = new DataSet(w, h, slope);
            aspect = new DataSet(w, h, aspect);
            return { slope, aspect, dzdx, dzdy }
        }
        max() {
            return this.data.reduce((a, b) => Math.max(a, b))
        }
        min() {
            return this.data.reduce((a, b) => Math.min(a, b))
        }
        extent() {
            return [this.min(), this.max()]
        }
        sum() {
            return this.data.reduce((a, b) => a + b)
        }
        normalize(lo = 0, hi = 1, round = false) {
            const [min, max] = this.extent();
            const scale = 1 / (max - min);
            let data = this.data.map(n => lerp(lo, hi, scale * (n - min)));
            if (round) data = data.map(n => Math.round(n));
            return new DataSet(this.width, this.height, data)
        }
        equals(dataset) {
            return (
                this.width === dataset.width &&
                this.height === dataset.height &&
                arraysEqual$1(this.data, dataset.data)
            )
        }
    }

    class Link {
        hidden = false
        end0 = null
        end1 = null
        width = 1
        agentSet
        model
        name
        init(from, to) {
            this.end0 = from;
            this.end1 = to;
            from.links.push(this);
            to.links.push(this);
        }
        die() {
            if (this.id === -1) return
            this.agentSet.removeAgent(this);
            removeArrayItem(this.end0.links, this);
            removeArrayItem(this.end1.links, this);
            this.id = -1;
        }
        isDead() {
            return this.id === -1
        }
        bothEnds() {
            return AgentArray.fromArray([this.end0, this.end1])
        }
        length() {
            return this.end0.distance(this.end1)
        }
        get heading() {
            const { x0, x1, y0, y1 } = this;
            const rads = Math.atan2(y1 - y0, x1 - x0);
            return this.model.fromRads(rads)
        }
        otherEnd(turtle) {
            if (turtle === this.end0) return this.end1
            if (turtle === this.end1) return this.end0
            throw Error(`Link.otherEnd: turtle not a link turtle: ${turtle}`)
        }
        distanceXY(x, y) {
            return (
                this.bothEnds()
                    .map(t => t.distanceXY(x, y))
                    .sum() - this.length()
            )
        }
        get x0() {
            return this.end0.x
        }
        get y0() {
            return this.end0.y
        }
        get z0() {
            return this.end0.z ? this.end0.z : 0
        }
        get x1() {
            return this.end1.x
        }
        get y1() {
            return this.end1.y
        }
        get z1() {
            return this.end1.z ? this.end1.z : 0
        }
    }

    class Links extends AgentSet {
        createOne(from, to, initFcn = link => {}) {
            const link = this.addAgent();
            link.init(from, to);
            initFcn(link);
            return link
        }
        create(from, to, initFcn = link => {}) {
            if (!Array.isArray(to)) to = [to];
            return to.map(t => {
                return this.createOne(from, t, initFcn)
            })
        }
    }

    class World {
        maxX = 16
        minX = -16
        maxY = 16
        minY = -16
        maxZ = 16
        minZ = -16
        static defaultOptions(maxX = 16, maxY = maxX, maxZ = Math.max(maxX, maxY)) {
            return {
                minX: -maxX,
                maxX: maxX,
                minY: -maxY,
                maxY: maxY,
                minZ: -maxZ,
                maxZ: maxZ,
            }
        }
        static defaultWorld(maxX = 16, maxY = maxX, maxZ = maxX) {
            return new World(World.defaultOptions(maxX, maxY, maxZ))
        }
        constructor(options = {}) {
            Object.assign(this, options);
            this.setWorld();
        }
        setWorld() {
            let { minX, maxX, minY, maxY, minZ, maxZ } = this;
            forLoop({ minX, maxX, minY, maxY, minZ, maxZ }, (val, key) => {
                if (!Number.isInteger(val))
                    throw Error(`World: ${key}:${val} must be an integer`)
            });
            this.numX = this.width = maxX - minX + 1;
            this.numY = this.height = maxY - minY + 1;
            this.numZ = this.depth = maxZ - minZ + 1;
            this.minXcor = minX - 0.5;
            this.maxXcor = maxX + 0.5;
            this.minYcor = minY - 0.5;
            this.maxYcor = maxY + 0.5;
            this.minZcor = minZ - 0.5;
            this.maxZcor = maxZ + 0.5;
            this.centerX = (minX + maxX) / 2;
            this.centerY = (minY + maxY) / 2;
            this.centerZ = (minZ + maxZ) / 2;
            this.numPatches = this.numX * this.numY;
        }
        getOptions() {
            const { minX, minY, minZ, maxX, maxY, maxZ } = this;
            return { minX, minY, minZ, maxX, maxY, maxZ }
        }
        randomPoint() {
            return [
                randomFloat2(this.minXcor, this.maxXcor),
                randomFloat2(this.minYcor, this.maxYcor),
            ]
        }
        random3DPoint() {
            return [
                randomFloat2(this.minXcor, this.maxXcor),
                randomFloat2(this.minYcor, this.maxYcor),
                randomFloat2(this.minZcor, this.maxZcor),
            ]
        }
        randomPatchPoint() {
            return [
                randomInt2(this.minX, this.maxX),
                randomInt2(this.minY, this.maxY),
            ]
        }
        isOnWorld(x, y, z = this.centerZ) {
            return (
                this.minXcor <= x &&
                x <= this.maxXcor &&
                this.minYcor <= y &&
                y <= this.maxYcor &&
                this.minZcor <= z &&
                z <= this.maxZcor
            )
        }
        bboxTransform(minX, minY, maxX, maxY) {
            return new BBoxTransform(minX, minY, maxX, maxY, this)
        }
        getWorldSize(patchSize = 1) {
            return [this.numX * patchSize, this.numY * patchSize]
        }
        setEuclideanTransform(ctx, patchSize) {
            this.setCanvasSize(ctx.canvas, patchSize);
            ctx.restore();
            ctx.save();
            ctx.scale(patchSize, -patchSize);
            ctx.translate(-this.minXcor, -this.maxYcor);
        }
        patchSize(canvas) {
            const { numX, numY } = this;
            const { clientWidth: width, clientHeight: height } = canvas;
            const xSize = width / numX;
            const ySize = height / numY;
            if (xSize !== ySize) {
                throw Error(`World patchSize: x/y sizes differ ${xSize}, ${ySize}`)
            }
            return xSize
        }
        setCanvasSize(canvas, patchSize) {
            const [width, height] = this.getWorldSize(patchSize);
            setCanvasSize(canvas, width, height);
        }
        pixelXYtoPatchXY(x, y, patchSize) {
            return [this.minXcor + x / patchSize, this.maxYcor - y / patchSize]
        }
        patchXYtoPixelXY(x, y, patchSize) {
            return [(x - this.minXcor) * patchSize, (this.maxYcor - y) * patchSize]
        }
        xyToPatchIndex(x, y) {
            if (!this.isOnWorld(x, y)) return undefined
            const { minX, maxX, maxY, numX, maxXcor, maxYcor } = this;
            x = x === maxXcor ? maxX : Math.round(x);
            y = y === maxYcor ? maxY : Math.round(y);
            return x - minX + numX * (maxY - y)
        }
    }
    class BBoxTransform {
        constructor(minX, minY, maxX, maxY, world) {
            this.bbox = [minX, minY, maxX, maxY];
            if (minX < maxX) console.log('flipX');
            if (maxY < minY) console.log('flipY');
            if (minX < maxX) [minX, maxX] = [maxX, minX];
            if (maxY < minY) [maxY, minY] = [minY, maxY];
            const { maxXcor, maxYcor, minXcor, minYcor } = world;
            const mx = (minX - maxX) / (maxXcor - minXcor);
            const my = (maxY - minY) / (maxYcor - minYcor);
            const bx = (minX + maxX - mx * (maxXcor + minXcor)) / 2;
            const by = (maxY + minY - my * (maxYcor + minYcor)) / 2;
            Object.assign(this, { mx, my, bx, by });
        }
        toWorld(bboxPoint) {
            const { mx, my, bx, by } = this;
            const [bboxX, bboxY] = bboxPoint;
            const x = (bboxX - bx) / mx;
            const y = (bboxY - by) / my;
            return [x, y]
        }
        toBBox(worldPoint) {
            const { mx, my, bx, by } = this;
            const [worldX, worldY] = worldPoint;
            const x = mx * worldX + bx;
            const y = my * worldY + by;
            return [x, y]
        }
    }

    const { PI: PI$1, atan, atan2, cos, floor, log, pow, sin, sinh, sqrt, tan, abs } =
        Math;
    const radians = degrees => (degrees * PI$1) / 180;
    const degrees = radians => (radians * 180) / PI$1;
    function latlon(lonlat) {
        if (typeof lonlat[0] !== 'number') return lonlat.map(val => latlon(val))
        return [lonlat[1], lonlat[0]]
    }
    function lonz2xFloat(lon, z) {
        return ((lon + 180) / 360) * pow(2, z)
    }
    function lonz2x(lon, z) {
        return floor(lonz2xFloat(lon, z))
    }
    function latz2yFloat(lat, z) {
        const latRads = radians(lat);
        return (1 - log(tan(latRads) + 1 / cos(latRads)) / PI$1) * pow(2, z - 1)
    }
    function latz2y(lat, z) {
        return floor(latz2yFloat(lat, z))
    }
    function lonlatz2xyFloat(lon, lat, z) {
        return [lonz2xFloat(lon, z), latz2yFloat(lat, z)]
    }
    function lonlatz2xy(lon, lat, z) {
        return [lonz2x(lon, z), latz2y(lat, z)]
    }
    function xz2lon(x, z) {
        return (x / pow(2, z)) * 360 - 180
    }
    function yz2lat(y, z) {
        const rads = atan(sinh(PI$1 - (2 * PI$1 * y) / pow(2, z)));
        return degrees(rads)
    }
    function xyz2lonlat(x, y, z) {
        return [xz2lon(x, z), yz2lat(y, z)]
    }
    function xyz2centerLonlat(x, y, z) {
        return [xz2lon(x + 0.5, z), yz2lat(y + 0.5, z)]
    }
    function xyz2bbox(x, y, z, digits = null) {
        const [west, north] = xyz2lonlat(x, y, z);
        const [east, south] = xyz2lonlat(x + 1, y + 1, z);
        if (!digits) return [west, south, east, north]
        return precision([west, south, east, north], digits)
    }
    function xyInBBox(bbox, pt) {
        const [west, south, east, north] = bbox;
        const [x, y] = pt;
        return isBetween(x, west, east) && isBetween(y, south, north)
    }
    function lonLatz2bbox(lon, lat, z) {
        const [x, y] = lonlatz2xy(lon, lat, z);
        return xyz2bbox(x, y, z)
    }
    function Lbounds2bbox(leafletBounds) {
        let { lng: west, lat: north } = leafletBounds.getNorthWest();
        let { lng: east, lat: south } = leafletBounds.getSouthEast();
        return [west, south, east, north]
    }
    function tilesBBox(bbox, z) {
        const [west, south, east, north] = bbox;
        const [westX, northY] = lonlatz2xy(west, north, z);
        let [eastX, southY] = lonlatz2xyFloat(east, south, z);
        eastX = floor(eastX);
        southY = Number.isInteger(southY) ? southY - 1 : floor(southY);
        return [westX, southY, eastX, northY]
    }
    function bboxCenter(bbox) {
        const [west, south, east, north] = bbox;
        return [(west + east) / 2, (south + north) / 2]
    }
    function bboxCoords(bbox) {
        const [west, south, east, north] = bbox;
        return [
            [west, north],
            [east, north],
            [east, south],
            [west, south],
        ]
    }
    function bboxBounds(bbox) {
        const [west, south, east, north] = bbox;
        return [
            [west, north],
            [east, south],
        ]
    }
    function bboxFeature$1(bbox, properties = {}) {
        const coords = bboxCoords(bbox);
        coords.push(coords[0]);
        return {
            type: 'Feature',
            geometry: {
                type: 'Polygon',
                coordinates: [coords],
            },
            properties,
        }
    }
    function bboxFromCenter(center, dLon = 1, dLat = dLon) {
        let [lon, lat] = center;
        return [lon - dLon, lat - dLat, lon + dLon, lat + dLat]
    }
    const santaFeCenter = [-105.978, 35.66];
    const santaFeBBox = bboxFromCenter(santaFeCenter, 0.2, 0.1);
    const newMexicoBBox = [-109.050044, 31.332301, -103.001964, 37.000104];
    const newMexicoCenter = bboxCenter(newMexicoBBox);
    const usaBBox = [-124.733174, 24.544701, -66.949895, 49.384358];
    const usaCenter = bboxCenter(usaBBox);
    function bboxSize(bbox) {
        const [west, south, east, north] = bbox;
        const width = abs(west - east);
        const height = abs(north - south);
        return [width, height]
    }
    function bboxAspect(bbox) {
        const [width, height] = bboxSize(bbox);
        return width / height
    }
    function bboxMetricSize(bbox) {
        const [west, south, east, north] = bbox;
        const topLeft = [west, north];
        const botLeft = [west, south];
        const topRight = [east, north];
        const width = lonLat2meters(topLeft, topRight);
        const height = lonLat2meters(topLeft, botLeft);
        return [width, height]
    }
    function bboxMetricAspect(bbox) {
        const [width, height] = bboxMetricSize(bbox);
        return width / height
    }
    function getOsmURL(south, west, north, east) {
        const url = 'https://overpass-api.de/api/interpreter?data=';
        const params = `\
[out:json][timeout:180][bbox:${south},${west},${north},${east}];
way[highway];
(._;>;);
out;`;
        return url + encodeURIComponent(params)
    }
    async function bbox2osm(bbox) {
        const [west, south, east, north] = bbox;
        const url = getOsmURL(south, west, north, east);
        const osm = await fetch(url).then(resp => resp.json());
        return osm
    }
    function lonLat2meters(pt1, pt2) {
        const [lon1, lat1] = pt1.map(val => radians(val));
        const [lon2, lat2] = pt2.map(val => radians(val));
        const R = 6378.137;
        const dLat = lat2 - lat1;
        const dLon = lon2 - lon1;
        const a = sin(dLat / 2) ** 2 + cos(lat1) * cos(lat2) * sin(dLon / 2) ** 2;
        const c = 2 * atan2(sqrt(a), sqrt(1 - a));
        const d = R * c;
        return d * 1000
    }
    function attribution(who = 'osm') {
        const prefix = 'Map data &copy; ';
        switch (who) {
            case 'osm':
                return (
                    prefix + '<a href="https://openstreetmap.org">OpenStreetMap</a>'
                )
            case 'topo':
                return prefix + '<a href="https://opentopomap.org">OpenTopoMap</a>'
            case 'topo1':
                return (
                    prefix + '<a  href="https://www.maptiler.com">OpenTopoMap</a>'
                )
            case 'smooth':
                return prefix + '<a href="https://stadiamaps.com/">Stadia Maps</a>'
            case 'usgs':
                return (
                    prefix +
                    'Tiles courtesy of the <a href="https://usgs.gov/">U.S. Geological Survey</a>'
                )
        }
        throw Error('gis.attribution: name unknown:', who)
    }
    function template(who = 'osm') {
        switch (who) {
            case 'osm':
                return 'https://tile.openstreetmap.org/{z}/{x}/{y}.png'
            case 'topo':
                return 'https://a.tile.opentopomap.org/{z}/{x}/{y}.png'
            case 'topo1':
                return 'https://api.maptiler.com/maps/topo/{z}/{x}/{y}.png?key=iQurAP6lArV1UP4gfSVs'
            case 'smooth':
                return 'https://tiles.stadiamaps.com/tiles/alidade_smooth/{z}/{x}/{y}{r}.png'
            case 'usgs':
                return 'https://basemap.nationalmap.gov/arcgis/rest/services/USGSTopo/MapServer/tile/{z}/{y}/{x}'
            case 'contour':
                return 'https://api.maptiler.com/tiles/contours/tiles.json?key=iQurAP6lArV1UP4gfSVs'
        }
        throw Error('gis.template: name unknown:', who)
    }
    function url(z, x, y, who = 'osm') {
        switch (who) {
            case 'osm':
                return `https://tile.openstreetmap.org/${z}/${x}/${y}.png`
            case 'topo':
                return `https://tile.opentopomap.org/${z}/${x}/${y}.png`
            case 'topo1':
                return `https://api.maptiler.com/maps/topo/${z}/${x}/${y}.png?key=iQurAP6lArV1UP4gfSVs`
            case 'smooth':
                return `https://tiles.stadiamaps.com/tiles/alidade_smooth/${z}/${x}/${y}{r}.png`
            case 'usgs':
                return `https://basemap.nationalmap.gov/arcgis/rest/services/USGSTopo/MapServer/tile/${z}/${y}/${x}`
        }
        throw Error('gis.url: name unknown:', who)
    }
    function elevationTemplate(who = 'mapzen') {
        switch (who) {
            case 'mapzen':
                return `https://s3.amazonaws.com/elevation-tiles-prod/terrarium/{z}/{x}/{y}.png`
            case 'maptiler':
                return `https://api.maptiler.com/tiles/terrain-rgb/{z}/{x}/{y}.png?key=iQurAP6lArV1UP4gfSVs`
            case 'redfishUSA':
                return `https://s3-us-west-2.amazonaws.com/simtable-elevation-tiles/{z}/{x}/{y}.png`
            case 'redfishWorld':
                return `https://s3-us-west-2.amazonaws.com/world-elevation-tiles/DEM_tiles/{z}/{x}/{y}.png`
            case 'mapbox':
                return (
                    `https://api.mapbox.com/v4/mapbox.terrain-rgb/{z}/{x}/{y}.png?access_token=` +
                    'pk.eyJ1IjoiYmFja3NwYWNlcyIsImEiOiJjanVrbzI4dncwOXl3M3ptcGJtN3oxMmhoIn0.x9iSCrtm0iADEqixVgPwqQ'
                )
        }
        throw Error('gis.elevationTemplate: name unknown:', who)
    }

    var gis = /*#__PURE__*/Object.freeze({
        __proto__: null,
        latlon: latlon,
        lonz2xFloat: lonz2xFloat,
        lonz2x: lonz2x,
        latz2yFloat: latz2yFloat,
        latz2y: latz2y,
        lonlatz2xyFloat: lonlatz2xyFloat,
        lonlatz2xy: lonlatz2xy,
        xz2lon: xz2lon,
        yz2lat: yz2lat,
        xyz2lonlat: xyz2lonlat,
        xyz2centerLonlat: xyz2centerLonlat,
        xyz2bbox: xyz2bbox,
        xyInBBox: xyInBBox,
        lonLatz2bbox: lonLatz2bbox,
        Lbounds2bbox: Lbounds2bbox,
        tilesBBox: tilesBBox,
        bboxCenter: bboxCenter,
        bboxCoords: bboxCoords,
        bboxBounds: bboxBounds,
        bboxFeature: bboxFeature$1,
        bboxFromCenter: bboxFromCenter,
        santaFeCenter: santaFeCenter,
        santaFeBBox: santaFeBBox,
        newMexicoBBox: newMexicoBBox,
        newMexicoCenter: newMexicoCenter,
        usaBBox: usaBBox,
        usaCenter: usaCenter,
        bboxSize: bboxSize,
        bboxAspect: bboxAspect,
        bboxMetricSize: bboxMetricSize,
        bboxMetricAspect: bboxMetricAspect,
        getOsmURL: getOsmURL,
        bbox2osm: bbox2osm,
        lonLat2meters: lonLat2meters,
        attribution: attribution,
        template: template,
        url: url,
        elevationTemplate: elevationTemplate
    });

    class GeoWorld extends World {
        static defaultOptions(bbox = newMexicoBBox, patchesWidth = 100) {
            return {
                bbox,
                patchesWidth,
            }
        }
        constructor(options = GeoWorld.defaultOptions()) {
            let { bbox: bbox$1, patchesWidth } = options;
            let json;
            if (!Array.isArray(bbox$1)) {
                json = bbox$1;
                bbox$1 = bbox(json);
            }
            const aspect = bboxMetricAspect(bbox$1);
            const maxZ = Math.round(patchesWidth / 2);
            super({
                minX: 0,
                maxX: patchesWidth - 1,
                minY: 0,
                maxY: Math.round(patchesWidth / aspect),
                minZ: -maxZ,
                maxZ: maxZ,
            });
            this.bbox = bbox$1;
            this.xfm = this.bboxTransform(...bbox$1);
            if (json) this.geojson = json;
        }
        toGeo(x, y) {
            return this.xfm.toBBox([x, y])
        }
        toWorld(geoX, geoY) {
            return this.xfm.toWorld([geoX, geoY])
        }
        bboxCenter() {
            return bboxCenter(this.bbox)
        }
        bboxCoords() {
            return bboxCoords(this.bbox)
        }
        bboxFeature(options = {}) {
            return bboxFeature$1(this.bbox, options)
        }
    }

    class Patches extends AgentSet {
        constructor(model, AgentClass, name) {
            super(model, AgentClass, name);
            if (this.isBreedSet()) return
            this.populate();
            this.labels = [];
        }
        populate() {
            repeat(this.model.world.numX * this.model.world.numY, i => {
                this.addAgent();
            });
        }
        neighborsOffsets(x, y) {
            const { minX, maxX, minY, maxY, numX } = this.model.world;
            if (x === minX) {
                if (y === minY) return [-numX, -numX + 1, 1]
                if (y === maxY) return [1, numX + 1, numX]
                return [-numX, -numX + 1, 1, numX + 1, numX]
            }
            if (x === maxX) {
                if (y === minY) return [-numX - 1, -numX, -1]
                if (y === maxY) return [numX, numX - 1, -1]
                return [-numX - 1, -numX, numX, numX - 1, -1]
            }
            if (y === minY) return [-numX - 1, -numX, -numX + 1, 1, -1]
            if (y === maxY) return [1, numX + 1, numX, numX - 1, -1]
            return [-numX - 1, -numX, -numX + 1, 1, numX + 1, numX, numX - 1, -1]
        }
        neighbors4Offsets(x, y) {
            const numX = this.model.world.numX;
            return this.neighborsOffsets(x, y).filter(
                n => Math.abs(n) === 1 || Math.abs(n) === numX
            )
        }
        neighbors(patch) {
            const { id, x, y } = patch;
            const offsets = this.neighborsOffsets(x, y);
            const as = new AgentList(this.model, offsets.length);
            offsets.forEach((o, i) => {
                as[i] = this[o + id];
            });
            return as
        }
        neighbors4(patch) {
            const { id, x, y } = patch;
            const offsets = this.neighbors4Offsets(x, y);
            const as = new AgentList(this.model, offsets.length);
            offsets.forEach((o, i) => {
                as[i] = this[o + id];
            });
            return as
        }
        importDataSet(dataSet, property, useNearest = false) {
            if (this.isBreedSet()) {
                warn('Patches: exportDataSet called with breed, using patches');
                this.baseSet.importDataSet(dataSet, property, useNearest);
                return
            }
            const { numX, numY } = this.model.world;
            const dataset = dataSet.resample(numX, numY, useNearest);
            this.ask(p => {
                p[property] = dataset.data[p.id];
            });
        }
        exportDataSet(property, Type = Array) {
            if (this.isBreedSet()) {
                warn('Patches: exportDataSet called with breed, using patches');
                return this.baseSet.exportDataSet(property, Type)
            }
            const { numX, numY } = this.model.world;
            let data = this.props(property);
            data = convertArrayType(data, Type);
            return new DataSet(numX, numY, data)
        }
        patchIndex(x, y) {
            const { minX, maxY, numX } = this.model.world;
            return x - minX + numX * (maxY - y)
        }
        patch(x, y) {
            if (!this.model.world.isOnWorld(x, y)) return undefined
            const intX =
                x === this.model.world.maxXcor
                    ? this.model.world.maxX
                    : Math.round(x);
            const intY =
                y === this.model.world.maxYcor
                    ? this.model.world.maxY
                    : Math.round(y);
            return this.patchXY(intX, intY)
        }
        patchXY(x, y) {
            return this[this.patchIndex(x, y)]
        }
        patchRect(p, dx, dy = dx, meToo = true) {
            if (p.rectCache) {
                const index = this.cacheIndex(dx, dy, meToo);
                const rect = p.rectCache[index];
                if (rect) return rect
            }
            const rect = new AgentList(this.model);
            let { minX, maxX, minY, maxY } = this.model.world;
            minX = Math.max(minX, p.x - dx);
            maxX = Math.min(maxX, p.x + dx);
            minY = Math.max(minY, p.y - dy);
            maxY = Math.min(maxY, p.y + dy);
            for (let y = minY; y <= maxY; y++) {
                for (let x = minX; x <= maxX; x++) {
                    const pnext = this.patchXY(x, y);
                    if (p !== pnext || meToo) rect.push(pnext);
                }
            }
            return rect
        }
        patchRectXY(x, y, dx, dy = dx, meToo = true) {
            return this.patchRect(this.patch(x, y), dx, dy, meToo)
        }
        cacheIndex(dx, dy = dx, meToo = true) {
            return (2 * dx + 1) * (2 * dy + 1) + (meToo ? 0 : -1)
        }
        cacheRect(dx, dy = dx, meToo = true, clear = true) {
            const index = this.cacheIndex(dx, dy, meToo);
            this.ask(p => {
                if (!p.rectCache || clear) p.rectCache = [];
                const rect = this.inRect(p, dx, dy, meToo);
                p.rectCache[index] = rect;
            });
        }
        inRect(patch, dx, dy = dx, meToo = true) {
            const pRect = this.patchRect(patch, dx, dy, meToo);
            if (this.isBaseSet()) return pRect
            return pRect.withBreed(this)
        }
        inRadius(patch, radius, meToo = true) {
            const dxy = Math.ceil(radius);
            const pRect = this.inRect(patch, dxy, dxy, meToo);
            return pRect.inRadius(patch, radius, meToo)
        }
        inCone(patch, radius, coneAngle, heading, meToo = true) {
            const dxy = Math.ceil(radius);
            const pRect = this.inRect(patch, dxy, dxy, meToo);
            return pRect.inCone(patch, radius, coneAngle, heading, meToo)
        }
        patchAtHeadingAndDistance(agent, heading, distance) {
            heading = this.model.toRads(heading);
            let { x, y } = agent;
            x = x + distance * Math.cos(heading);
            y = y + distance * Math.sin(heading);
            return this.patch(x, y)
        }
        isOnEdge(patch) {
            const { x, y } = patch;
            const { minX, maxX, minY, maxY } = this.model.world;
            return x === minX || x === maxX || y === minY || y === maxY
        }
        edgePatches() {
            return this.filter(p => this.isOnEdge(p))
        }
        diffuse(v, rate) {
            this.diffuseN(8, v, rate);
        }
        diffuse4(v, rate) {
            this.diffuseN(4, v, rate);
        }
        diffuseN(n, v, rate) {
            if (this[0]._diffuseNext === undefined) {
                for (let i = 0; i < this.length; i++) this[i]._diffuseNext = 0;
            }
            for (let i = 0; i < this.length; i++) {
                const p = this[i];
                const dv = p[v] * rate;
                const dvn = dv / n;
                const neighbors = n === 8 ? p.neighbors : p.neighbors4;
                const nn = neighbors.length;
                p._diffuseNext += p[v] - dv + (n - nn) * dvn;
                for (let i = 0; i < neighbors.length; i++) {
                    neighbors[i]._diffuseNext += dvn;
                }
            }
            for (let i = 0; i < this.length; i++) {
                const p = this[i];
                p[v] = p._diffuseNext;
                p._diffuseNext = 0;
            }
        }
    }

    class Patch {
        agentSet
        model
        name
        turtles
        z = 0
        get x() {
            return (this.id % this.model.world.width) + this.model.world.minX
        }
        get y() {
            return (
                this.model.world.maxY - Math.floor(this.id / this.model.world.width)
            )
        }
        isOnEdge() {
            return this.patches.isOnEdge(this)
        }
        get neighbors() {
            const n = this.patches.neighbors(this);
            Object.defineProperty(this, 'neighbors', { value: n, enumerable: true });
            return n
        }
        get neighbors4() {
            const n = this.patches.neighbors4(this);
            Object.defineProperty(this, 'neighbors4', {
                value: n,
                enumerable: true,
            });
            return n
        }
        get turtlesHere() {
            if (this.turtles == null) {
                this.patches.ask(p => {
                    p.turtles = new AgentList(this.model);
                });
                this.model.turtles.ask(t => {
                    t.patch.turtles.push(t);
                });
            }
            return this.turtles
        }
        breedsHere(breed) {
            const turtles = this.turtlesHere;
            return turtles.withBreed(breed)
        }
        distanceXY(x, y, z = null) {
            const useZ = z != null && this.z != null;
            return useZ
                ? distance3(this.x, this.y, this.z, x, y, z)
                : distance(this.x, this.y, x, y)
        }
        distance(agent) {
            const { x, y, z } = agent;
            return this.distanceXY(x, y, z)
        }
        towards(agent) {
            return this.towardsXY(agent.x, agent.y)
        }
        towardsXY(x, y) {
            let rads = radiansTowardXY(this.x, this.y, x, y);
            return this.model.fromRads(rads)
        }
        patchAt(dx, dy) {
            return this.patches.patch(this.x + dx, this.y + dy)
        }
        patchAtHeadingAndDistance(heading, distance) {
            return this.patches.patchAtHeadingAndDistance(this, heading, distance)
        }
        sprout(num = 1, breed = this.model.turtles, initFcn = turtle => {}) {
            return breed.create(num, turtle => {
                turtle.setxy(this.x, this.y);
                initFcn(turtle);
            })
        }
    }

    class Turtles extends AgentSet {
        constructor(model, AgentClass, name, baseSet = null) {
            super(model, AgentClass, name, baseSet);
        }
        createOne(initFcn = turtle => {}) {
            const turtle = this.addAgent();
            turtle.heading = this.model.fromRads(randomFloat(Math.PI * 2));
            const p = turtle.patch;
            if (p.turtles != null) {
                p.turtles.push(turtle);
            }
            initFcn(turtle);
            return turtle
        }
        create(num, initFcn = turtle => {}) {
            return repeat(num, (i, a) => {
                a.push(this.createOne(initFcn));
            })
        }
        closestTurtle(x, y, radius) {
            const ts = this.inPatchRectXY(x, y, radius);
            if (ts.length === 0) return null
            return ts.minOneOf(t => t.distanceXY(x, y))
        }
        inPatches(patches) {
            let array = new AgentList(this.model);
            for (const p of patches) array.push(...p.turtlesHere);
            if (this.isBreedSet()) array = array.filter(a => a.agentSet === this);
            return array
        }
        inPatchRect(turtle, dx, dy = dx, meToo = false) {
            const agents = this.inPatchRectXY(turtle.x, turtle.y, dx, dy);
            if (!meToo) removeArrayItem(agents, turtle);
            return agents
        }
        inPatchRectXY(x, y, dx, dy = dx) {
            const patches = this.model.patches.patchRectXY(x, y, dx, dy, true);
            return this.inPatches(patches)
        }
        inRadius(turtle, radius, meToo = false) {
            const agents = this.inPatchRect(turtle, radius, radius, true);
            return agents.inRadius(turtle, radius, meToo)
        }
        inCone(turtle, radius, coneAngle, meToo = false) {
            const agents = this.inPatchRect(turtle, radius, radius, true);
            return agents.inCone(turtle, radius, coneAngle, turtle.heading, meToo)
        }
        layoutCircle(radius = this.model.world.maxX * 0.9, center = [0, 0]) {
            const startAngle = Math.PI / 2;
            const direction = -1;
            const dTheta = (2 * Math.PI) / this.length;
            const [x0, y0] = center;
            this.ask((turtle, i) => {
                turtle.setxy(x0, y0);
                turtle.theta = startAngle + direction * dTheta * i;
                turtle.forward(radius);
            });
        }
    }

    class Turtle {
        atEdge = 'wrap'
        hidden = false
        agentSet
        model
        name
        agentConstructor() {
            this.theta = null;
            this.x = 0;
            this.y = 0;
            this.agentSet.setDefault('z', null);
        }
        die() {
            if (this.id === -1) return
            this.agentSet.removeAgent(this);
            if (this.hasOwnProperty('links')) {
                while (this.links.length > 0) this.links[0].die();
            }
            if (this.patch && this.patch.turtles)
                removeArrayItem(this.patch.turtles, this);
            this.id = -1;
        }
        isDead() {
            return this.id === -1
        }
        hatch(num = 1, breed = this.agentSet, init = turtle => {}) {
            return breed.create(num, turtle => {
                turtle.setxy(this.x, this.y, this.z);
                turtle.theta = this.theta;
                for (const key of breed.ownVariables) {
                    if (turtle[key] == null) turtle[key] = this[key];
                }
                init(turtle);
            })
        }
        get links() {
            Object.defineProperty(this, 'links', {
                value: new AgentList(this.model),
                enumerable: true,
            });
            return this.links
        }
        get patch() {
            return this.model.patches.patch(this.x, this.y)
        }
        get heading() {
            return this.model.fromRads(this.theta)
        }
        set heading(heading) {
            this.theta = this.model.toRads(heading);
        }
        subtractHeading(heading) {
            return subtractHeadings(heading, this.heading)
        }
        setxy(x, y, z = undefined) {
            const p0 = this.patch;
            this.x = x;
            this.y = y;
            if (z != null) this.z = z;
            this.checkXYZ(p0);
        }
        checkXYZ(p0) {
            this.checkEdge();
            this.checkPatch(p0);
        }
        checkEdge() {
            const { x, y, z } = this;
            if (!this.model.world.isOnWorld(x, y, z) && this.atEdge !== 'OK') {
                this.handleEdge(x, y, z);
            }
        }
        checkPatch(p0) {
            const p = this.patch;
            if (p != p0) {
                if (p0 && p0.turtles) removeArrayItem(p0.turtles, this);
                if (p && p.turtles) p.turtles.push(this);
            }
        }
        handleEdge(x, y, z = undefined) {
            let atEdge = this.atEdge;
            if (isString(atEdge)) {
                const { minXcor, maxXcor, minYcor, maxYcor, minZcor, maxZcor } =
                    this.model.world;
                if (atEdge === 'wrap') {
                    this.x = wrap(x, minXcor, maxXcor);
                    this.y = wrap(y, minYcor, maxYcor);
                    if (z != null) this.z = wrap(z, minZcor, maxZcor);
                } else if (atEdge === 'die') {
                    this.die();
                } else if (atEdge === 'random') {
                    this.setxy(...this.model.world.randomPoint());
                } else if (atEdge === 'clamp' || atEdge === 'bounce') {
                    this.x = clamp(x, minXcor, maxXcor);
                    this.y = clamp(y, minYcor, maxYcor);
                    if (z != null) this.z = clamp(z, minZcor, maxZcor);
                    if (atEdge === 'bounce') {
                        if (this.x === minXcor || this.x === maxXcor) {
                            this.theta = Math.PI - this.theta;
                        } else if (this.y === minYcor || this.y === maxYcor) {
                            this.theta = -this.theta;
                        } else if (this.z === minZcor || this.z === maxZcor) {
                            if (this.pitch) {
                                this.pitch = -this.pitch;
                            } else {
                                this.z = wrap(z, minZcor, maxZcor);
                            }
                        }
                    }
                } else {
                    throw Error(`turtle.handleEdge: bad atEdge: ${atEdge}`)
                }
            } else {
                this.atEdge(this);
            }
        }
        moveTo(agent) {
            this.setxy(agent.x, agent.y, agent.z);
        }
        forward(d) {
            this.setxy(
                this.x + d * Math.cos(this.theta),
                this.y + d * Math.sin(this.theta)
            );
        }
        rotate(angle) {
            angle = this.model.toCCW(angle);
            this.heading += angle;
        }
        right(angle) {
            this.rotate(-angle);
        }
        left(angle) {
            this.rotate(angle);
        }
        face(agent) {
            this.heading = this.towards(agent);
        }
        facexy(x, y) {
            this.heading = this.towardsXY(x, y);
        }
        patchAhead(distance) {
            return this.patchAtHeadingAndDistance(this.heading, distance)
        }
        patchRightAndAhead(angle, distance) {
            angle = this.model.toCCW(angle);
            return this.patchAtHeadingAndDistance(this.heading - angle, distance)
        }
        patchLeftAndAhead(angle, distance) {
            return this.patchRightAndAhead(-angle, distance)
        }
        canMove(distance) {
            return this.patchAhead(distance) != null
        }
        distanceXY(x, y, z = null) {
            const useZ = z != null && this.z != null;
            return useZ
                ? distance3(this.x, this.y, this.z, x, y, z)
                : distance(this.x, this.y, x, y)
        }
        distance(agent) {
            const { x, y, z } = agent;
            return this.distanceXY(x, y, z)
        }
        get dx() {
            return Math.cos(this.theta)
        }
        get dy() {
            return Math.sin(this.theta)
        }
        towards(agent) {
            return this.towardsXY(agent.x, agent.y)
        }
        towardsXY(x, y) {
            let rads = radiansTowardXY(this.x, this.y, x, y);
            return this.model.fromRads(rads)
        }
        patchAt(dx, dy) {
            return this.model.patches.patch(this.x + dx, this.y + dy)
        }
        patchAtHeadingAndDistance(heading, distance) {
            return this.model.patches.patchAtHeadingAndDistance(
                this,
                heading,
                distance
            )
        }
        otherEnd(l) {
            return l.end0 === this ? l.end1 : l.end0
        }
        linkNeighbors() {
            return this.links.map(l => this.otherEnd(l))
        }
        isLinkNeighbor(t) {
            return t in this.linkNeighbors()
        }
    }

    class Model {
        world
        patches
        turtles
        links
        ticks
        constructor(worldOptions = World.defaultOptions()) {
            this.resetModel(worldOptions);
            this.setAutoTick(true);
            this.setGeometry('heading');
        }
        initAgentSet(name, AgentsetClass, AgentClass) {
            this[name] = new AgentsetClass(this, AgentClass, name);
        }
        options2world(worldOptions) {
            return worldOptions.bbox
                ? new GeoWorld(worldOptions)
                : new World(worldOptions)
        }
        resetModel(worldOptions) {
            this.ticks = 0;
            this.world =
                worldOptions.maxXcor === undefined
                    ? this.options2world(worldOptions)
                    : worldOptions;
            this.initAgentSet('patches', Patches, Patch);
            this.initAgentSet('turtles', Turtles, Turtle);
            this.initAgentSet('links', Links, Link);
        }
        reset(worldOptions = this.world) {
            this.resetModel(worldOptions);
        }
        tick() {
            this.ticks++;
        }
        async startup() {}
        setup() {}
        step() {}
        setAutoTick(autoTick = true) {
            const isAutoTick = this.hasOwnProperty('step');
            if (autoTick) {
                if (isAutoTick) return
                this.step0 = this.step;
                this.step = this.stepAndTick;
            } else {
                delete this.step;
                delete this.step0;
            }
        }
        stepAndTick() {
            this.step0();
            this.tick();
        }
        patchBreeds(breedNames) {
            for (const breedName of breedNames.split(' ')) {
                this[breedName] = this.patches.newBreed(breedName);
            }
        }
        turtleBreeds(breedNames) {
            for (const breedName of breedNames.split(' ')) {
                this[breedName] = this.turtles.newBreed(breedName);
            }
        }
        linkBreeds(breedNames) {
            for (const breedName of breedNames.split(' ')) {
                this[breedName] = this.links.newBreed(breedName);
            }
        }
        setGeometry(name = 'heading') {
            const geometry = geometries$1[name];
            if (!geometry) throw Error(`setGeometry: ${name} geometry not defined`)
            Object.assign(this, geometry);
        }
    }
    const toDeg = 180 / Math.PI;
    const toRad = Math.PI / 180;
    const geometries$1 = {
        radians: {
            toRads: rads => rads,
            fromRads: rads => rads,
            toAngleRads: rads => rads,
            fromAngleRads: rads => rads,
            toCCW: angle => angle,
        },
        degrees: {
            toRads: deg => deg * toRad,
            fromRads: rads => rads * toDeg,
            toAngleRads: deg => deg * toRad,
            fromAngleRads: rads => rads * toDeg,
            toCCW: angle => angle,
        },
        heading: {
            toRads: deg => (90 - deg) * toRad,
            fromRads: rads => 90 - rads * toDeg,
            toAngleRads: deg => deg * toRad,
            fromAngleRads: rads => rads * toDeg,
            toCCW: angle => -angle,
        },
    };

    const _lut$1 = [];
    for ( let i = 0; i < 256; i ++ ) {
    	_lut$1[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 );
    }
    let _seed$1 = 1234567;
    const MathUtils$1 = {
    	DEG2RAD: Math.PI / 180,
    	RAD2DEG: 180 / Math.PI,
    	generateUUID: function () {
    		const d0 = Math.random() * 0xffffffff | 0;
    		const d1 = Math.random() * 0xffffffff | 0;
    		const d2 = Math.random() * 0xffffffff | 0;
    		const d3 = Math.random() * 0xffffffff | 0;
    		const uuid = _lut$1[ d0 & 0xff ] + _lut$1[ d0 >> 8 & 0xff ] + _lut$1[ d0 >> 16 & 0xff ] + _lut$1[ d0 >> 24 & 0xff ] + '-' +
    			_lut$1[ d1 & 0xff ] + _lut$1[ d1 >> 8 & 0xff ] + '-' + _lut$1[ d1 >> 16 & 0x0f | 0x40 ] + _lut$1[ d1 >> 24 & 0xff ] + '-' +
    			_lut$1[ d2 & 0x3f | 0x80 ] + _lut$1[ d2 >> 8 & 0xff ] + '-' + _lut$1[ d2 >> 16 & 0xff ] + _lut$1[ d2 >> 24 & 0xff ] +
    			_lut$1[ d3 & 0xff ] + _lut$1[ d3 >> 8 & 0xff ] + _lut$1[ d3 >> 16 & 0xff ] + _lut$1[ d3 >> 24 & 0xff ];
    		return uuid.toUpperCase();
    	},
    	clamp: function ( value, min, max ) {
    		return Math.max( min, Math.min( max, value ) );
    	},
    	euclideanModulo: function ( n, m ) {
    		return ( ( n % m ) + m ) % m;
    	},
    	mapLinear: function ( x, a1, a2, b1, b2 ) {
    		return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );
    	},
    	lerp: function ( x, y, t ) {
    		return ( 1 - t ) * x + t * y;
    	},
    	smoothstep: function ( x, min, max ) {
    		if ( x <= min ) return 0;
    		if ( x >= max ) return 1;
    		x = ( x - min ) / ( max - min );
    		return x * x * ( 3 - 2 * x );
    	},
    	smootherstep: function ( x, min, max ) {
    		if ( x <= min ) return 0;
    		if ( x >= max ) return 1;
    		x = ( x - min ) / ( max - min );
    		return x * x * x * ( x * ( x * 6 - 15 ) + 10 );
    	},
    	randInt: function ( low, high ) {
    		return low + Math.floor( Math.random() * ( high - low + 1 ) );
    	},
    	randFloat: function ( low, high ) {
    		return low + Math.random() * ( high - low );
    	},
    	randFloatSpread: function ( range ) {
    		return range * ( 0.5 - Math.random() );
    	},
    	seededRandom: function ( s ) {
    		if ( s !== undefined ) _seed$1 = s % 2147483647;
    		_seed$1 = _seed$1 * 16807 % 2147483647;
    		return ( _seed$1 - 1 ) / 2147483646;
    	},
    	degToRad: function ( degrees ) {
    		return degrees * MathUtils$1.DEG2RAD;
    	},
    	radToDeg: function ( radians ) {
    		return radians * MathUtils$1.RAD2DEG;
    	},
    	isPowerOfTwo: function ( value ) {
    		return ( value & ( value - 1 ) ) === 0 && value !== 0;
    	},
    	ceilPowerOfTwo: function ( value ) {
    		return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );
    	},
    	floorPowerOfTwo: function ( value ) {
    		return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );
    	},
    	setQuaternionFromProperEuler: function ( q, a, b, c, order ) {
    		const cos = Math.cos;
    		const sin = Math.sin;
    		const c2 = cos( b / 2 );
    		const s2 = sin( b / 2 );
    		const c13 = cos( ( a + c ) / 2 );
    		const s13 = sin( ( a + c ) / 2 );
    		const c1_3 = cos( ( a - c ) / 2 );
    		const s1_3 = sin( ( a - c ) / 2 );
    		const c3_1 = cos( ( c - a ) / 2 );
    		const s3_1 = sin( ( c - a ) / 2 );
    		switch ( order ) {
    			case 'XYX':
    				q.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );
    				break;
    			case 'YZY':
    				q.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );
    				break;
    			case 'ZXZ':
    				q.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );
    				break;
    			case 'XZX':
    				q.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );
    				break;
    			case 'YXY':
    				q.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );
    				break;
    			case 'ZYZ':
    				q.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );
    				break;
    			default:
    				console.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );
    		}
    	}
    };
    let Quaternion$1 = class Quaternion {
    	constructor( x = 0, y = 0, z = 0, w = 1 ) {
    		Object.defineProperty( this, 'isQuaternion', { value: true } );
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._w = w;
    	}
    	static slerp( qa, qb, qm, t ) {
    		return qm.copy( qa ).slerp( qb, t );
    	}
    	static slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {
    		let x0 = src0[ srcOffset0 + 0 ],
    			y0 = src0[ srcOffset0 + 1 ],
    			z0 = src0[ srcOffset0 + 2 ],
    			w0 = src0[ srcOffset0 + 3 ];
    		const x1 = src1[ srcOffset1 + 0 ],
    			y1 = src1[ srcOffset1 + 1 ],
    			z1 = src1[ srcOffset1 + 2 ],
    			w1 = src1[ srcOffset1 + 3 ];
    		if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {
    			let s = 1 - t;
    			const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
    				dir = ( cos >= 0 ? 1 : - 1 ),
    				sqrSin = 1 - cos * cos;
    			if ( sqrSin > Number.EPSILON ) {
    				const sin = Math.sqrt( sqrSin ),
    					len = Math.atan2( sin, cos * dir );
    				s = Math.sin( s * len ) / sin;
    				t = Math.sin( t * len ) / sin;
    			}
    			const tDir = t * dir;
    			x0 = x0 * s + x1 * tDir;
    			y0 = y0 * s + y1 * tDir;
    			z0 = z0 * s + z1 * tDir;
    			w0 = w0 * s + w1 * tDir;
    			if ( s === 1 - t ) {
    				const f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );
    				x0 *= f;
    				y0 *= f;
    				z0 *= f;
    				w0 *= f;
    			}
    		}
    		dst[ dstOffset ] = x0;
    		dst[ dstOffset + 1 ] = y0;
    		dst[ dstOffset + 2 ] = z0;
    		dst[ dstOffset + 3 ] = w0;
    	}
    	static multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {
    		const x0 = src0[ srcOffset0 ];
    		const y0 = src0[ srcOffset0 + 1 ];
    		const z0 = src0[ srcOffset0 + 2 ];
    		const w0 = src0[ srcOffset0 + 3 ];
    		const x1 = src1[ srcOffset1 ];
    		const y1 = src1[ srcOffset1 + 1 ];
    		const z1 = src1[ srcOffset1 + 2 ];
    		const w1 = src1[ srcOffset1 + 3 ];
    		dst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
    		dst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
    		dst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
    		dst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
    		return dst;
    	}
    	get x() {
    		return this._x;
    	}
    	set x( value ) {
    		this._x = value;
    		this._onChangeCallback();
    	}
    	get y() {
    		return this._y;
    	}
    	set y( value ) {
    		this._y = value;
    		this._onChangeCallback();
    	}
    	get z() {
    		return this._z;
    	}
    	set z( value ) {
    		this._z = value;
    		this._onChangeCallback();
    	}
    	get w() {
    		return this._w;
    	}
    	set w( value ) {
    		this._w = value;
    		this._onChangeCallback();
    	}
    	set( x, y, z, w ) {
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._w = w;
    		this._onChangeCallback();
    		return this;
    	}
    	clone() {
    		return new this.constructor( this._x, this._y, this._z, this._w );
    	}
    	copy( quaternion ) {
    		this._x = quaternion.x;
    		this._y = quaternion.y;
    		this._z = quaternion.z;
    		this._w = quaternion.w;
    		this._onChangeCallback();
    		return this;
    	}
    	setFromEuler( euler, update ) {
    		if ( ! ( euler && euler.isEuler ) ) {
    			throw new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );
    		}
    		const x = euler._x, y = euler._y, z = euler._z, order = euler._order;
    		const cos = Math.cos;
    		const sin = Math.sin;
    		const c1 = cos( x / 2 );
    		const c2 = cos( y / 2 );
    		const c3 = cos( z / 2 );
    		const s1 = sin( x / 2 );
    		const s2 = sin( y / 2 );
    		const s3 = sin( z / 2 );
    		switch ( order ) {
    			case 'XYZ':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;
    			case 'YXZ':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;
    			case 'ZXY':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;
    			case 'ZYX':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;
    			case 'YZX':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;
    			case 'XZY':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;
    			default:
    				console.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );
    		}
    		if ( update !== false ) this._onChangeCallback();
    		return this;
    	}
    	setFromAxisAngle( axis, angle ) {
    		const halfAngle = angle / 2, s = Math.sin( halfAngle );
    		this._x = axis.x * s;
    		this._y = axis.y * s;
    		this._z = axis.z * s;
    		this._w = Math.cos( halfAngle );
    		this._onChangeCallback();
    		return this;
    	}
    	setFromRotationMatrix( m ) {
    		const te = m.elements,
    			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
    			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
    			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],
    			trace = m11 + m22 + m33;
    		if ( trace > 0 ) {
    			const s = 0.5 / Math.sqrt( trace + 1.0 );
    			this._w = 0.25 / s;
    			this._x = ( m32 - m23 ) * s;
    			this._y = ( m13 - m31 ) * s;
    			this._z = ( m21 - m12 ) * s;
    		} else if ( m11 > m22 && m11 > m33 ) {
    			const s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );
    			this._w = ( m32 - m23 ) / s;
    			this._x = 0.25 * s;
    			this._y = ( m12 + m21 ) / s;
    			this._z = ( m13 + m31 ) / s;
    		} else if ( m22 > m33 ) {
    			const s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );
    			this._w = ( m13 - m31 ) / s;
    			this._x = ( m12 + m21 ) / s;
    			this._y = 0.25 * s;
    			this._z = ( m23 + m32 ) / s;
    		} else {
    			const s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );
    			this._w = ( m21 - m12 ) / s;
    			this._x = ( m13 + m31 ) / s;
    			this._y = ( m23 + m32 ) / s;
    			this._z = 0.25 * s;
    		}
    		this._onChangeCallback();
    		return this;
    	}
    	setFromUnitVectors( vFrom, vTo ) {
    		const EPS = 0.000001;
    		let r = vFrom.dot( vTo ) + 1;
    		if ( r < EPS ) {
    			r = 0;
    			if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {
    				this._x = - vFrom.y;
    				this._y = vFrom.x;
    				this._z = 0;
    				this._w = r;
    			} else {
    				this._x = 0;
    				this._y = - vFrom.z;
    				this._z = vFrom.y;
    				this._w = r;
    			}
    		} else {
    			this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
    			this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
    			this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
    			this._w = r;
    		}
    		return this.normalize();
    	}
    	angleTo( q ) {
    		return 2 * Math.acos( Math.abs( MathUtils$1.clamp( this.dot( q ), - 1, 1 ) ) );
    	}
    	rotateTowards( q, step ) {
    		const angle = this.angleTo( q );
    		if ( angle === 0 ) return this;
    		const t = Math.min( 1, step / angle );
    		this.slerp( q, t );
    		return this;
    	}
    	identity() {
    		return this.set( 0, 0, 0, 1 );
    	}
    	inverse() {
    		return this.conjugate();
    	}
    	conjugate() {
    		this._x *= - 1;
    		this._y *= - 1;
    		this._z *= - 1;
    		this._onChangeCallback();
    		return this;
    	}
    	dot( v ) {
    		return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
    	}
    	lengthSq() {
    		return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
    	}
    	length() {
    		return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );
    	}
    	normalize() {
    		let l = this.length();
    		if ( l === 0 ) {
    			this._x = 0;
    			this._y = 0;
    			this._z = 0;
    			this._w = 1;
    		} else {
    			l = 1 / l;
    			this._x = this._x * l;
    			this._y = this._y * l;
    			this._z = this._z * l;
    			this._w = this._w * l;
    		}
    		this._onChangeCallback();
    		return this;
    	}
    	multiply( q, p ) {
    		if ( p !== undefined ) {
    			console.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );
    			return this.multiplyQuaternions( q, p );
    		}
    		return this.multiplyQuaternions( this, q );
    	}
    	premultiply( q ) {
    		return this.multiplyQuaternions( q, this );
    	}
    	multiplyQuaternions( a, b ) {
    		const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
    		const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;
    		this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
    		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
    		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
    		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
    		this._onChangeCallback();
    		return this;
    	}
    	slerp( qb, t ) {
    		if ( t === 0 ) return this;
    		if ( t === 1 ) return this.copy( qb );
    		const x = this._x, y = this._y, z = this._z, w = this._w;
    		let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
    		if ( cosHalfTheta < 0 ) {
    			this._w = - qb._w;
    			this._x = - qb._x;
    			this._y = - qb._y;
    			this._z = - qb._z;
    			cosHalfTheta = - cosHalfTheta;
    		} else {
    			this.copy( qb );
    		}
    		if ( cosHalfTheta >= 1.0 ) {
    			this._w = w;
    			this._x = x;
    			this._y = y;
    			this._z = z;
    			return this;
    		}
    		const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;
    		if ( sqrSinHalfTheta <= Number.EPSILON ) {
    			const s = 1 - t;
    			this._w = s * w + t * this._w;
    			this._x = s * x + t * this._x;
    			this._y = s * y + t * this._y;
    			this._z = s * z + t * this._z;
    			this.normalize();
    			this._onChangeCallback();
    			return this;
    		}
    		const sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
    		const halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
    		const ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
    			ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;
    		this._w = ( w * ratioA + this._w * ratioB );
    		this._x = ( x * ratioA + this._x * ratioB );
    		this._y = ( y * ratioA + this._y * ratioB );
    		this._z = ( z * ratioA + this._z * ratioB );
    		this._onChangeCallback();
    		return this;
    	}
    	equals( quaternion ) {
    		return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this._x = array[ offset ];
    		this._y = array[ offset + 1 ];
    		this._z = array[ offset + 2 ];
    		this._w = array[ offset + 3 ];
    		this._onChangeCallback();
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this._x;
    		array[ offset + 1 ] = this._y;
    		array[ offset + 2 ] = this._z;
    		array[ offset + 3 ] = this._w;
    		return array;
    	}
    	fromBufferAttribute( attribute, index ) {
    		this._x = attribute.getX( index );
    		this._y = attribute.getY( index );
    		this._z = attribute.getZ( index );
    		this._w = attribute.getW( index );
    		return this;
    	}
    	_onChange( callback ) {
    		this._onChangeCallback = callback;
    		return this;
    	}
    	_onChangeCallback() {}
    };
    let Vector3$1 = class Vector3 {
    	constructor( x = 0, y = 0, z = 0 ) {
    		Object.defineProperty( this, 'isVector3', { value: true } );
    		this.x = x;
    		this.y = y;
    		this.z = z;
    	}
    	set( x, y, z ) {
    		if ( z === undefined ) z = this.z;
    		this.x = x;
    		this.y = y;
    		this.z = z;
    		return this;
    	}
    	setScalar( scalar ) {
    		this.x = scalar;
    		this.y = scalar;
    		this.z = scalar;
    		return this;
    	}
    	setX( x ) {
    		this.x = x;
    		return this;
    	}
    	setY( y ) {
    		this.y = y;
    		return this;
    	}
    	setZ( z ) {
    		this.z = z;
    		return this;
    	}
    	setComponent( index, value ) {
    		switch ( index ) {
    			case 0: this.x = value; break;
    			case 1: this.y = value; break;
    			case 2: this.z = value; break;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    		return this;
    	}
    	getComponent( index ) {
    		switch ( index ) {
    			case 0: return this.x;
    			case 1: return this.y;
    			case 2: return this.z;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    	}
    	clone() {
    		return new this.constructor( this.x, this.y, this.z );
    	}
    	copy( v ) {
    		this.x = v.x;
    		this.y = v.y;
    		this.z = v.z;
    		return this;
    	}
    	add( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
    			return this.addVectors( v, w );
    		}
    		this.x += v.x;
    		this.y += v.y;
    		this.z += v.z;
    		return this;
    	}
    	addScalar( s ) {
    		this.x += s;
    		this.y += s;
    		this.z += s;
    		return this;
    	}
    	addVectors( a, b ) {
    		this.x = a.x + b.x;
    		this.y = a.y + b.y;
    		this.z = a.z + b.z;
    		return this;
    	}
    	addScaledVector( v, s ) {
    		this.x += v.x * s;
    		this.y += v.y * s;
    		this.z += v.z * s;
    		return this;
    	}
    	sub( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
    			return this.subVectors( v, w );
    		}
    		this.x -= v.x;
    		this.y -= v.y;
    		this.z -= v.z;
    		return this;
    	}
    	subScalar( s ) {
    		this.x -= s;
    		this.y -= s;
    		this.z -= s;
    		return this;
    	}
    	subVectors( a, b ) {
    		this.x = a.x - b.x;
    		this.y = a.y - b.y;
    		this.z = a.z - b.z;
    		return this;
    	}
    	multiply( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );
    			return this.multiplyVectors( v, w );
    		}
    		this.x *= v.x;
    		this.y *= v.y;
    		this.z *= v.z;
    		return this;
    	}
    	multiplyScalar( scalar ) {
    		this.x *= scalar;
    		this.y *= scalar;
    		this.z *= scalar;
    		return this;
    	}
    	multiplyVectors( a, b ) {
    		this.x = a.x * b.x;
    		this.y = a.y * b.y;
    		this.z = a.z * b.z;
    		return this;
    	}
    	applyEuler( euler ) {
    		if ( ! ( euler && euler.isEuler ) ) {
    			console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );
    		}
    		return this.applyQuaternion( _quaternion$2$1.setFromEuler( euler ) );
    	}
    	applyAxisAngle( axis, angle ) {
    		return this.applyQuaternion( _quaternion$2$1.setFromAxisAngle( axis, angle ) );
    	}
    	applyMatrix3( m ) {
    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;
    		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
    		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
    		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;
    		return this;
    	}
    	applyNormalMatrix( m ) {
    		return this.applyMatrix3( m ).normalize();
    	}
    	applyMatrix4( m ) {
    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;
    		const w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );
    		this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
    		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
    		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;
    		return this;
    	}
    	applyQuaternion( q ) {
    		const x = this.x, y = this.y, z = this.z;
    		const qx = q.x, qy = q.y, qz = q.z, qw = q.w;
    		const ix = qw * x + qy * z - qz * y;
    		const iy = qw * y + qz * x - qx * z;
    		const iz = qw * z + qx * y - qy * x;
    		const iw = - qx * x - qy * y - qz * z;
    		this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
    		this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
    		this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;
    		return this;
    	}
    	project( camera ) {
    		return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );
    	}
    	unproject( camera ) {
    		return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );
    	}
    	transformDirection( m ) {
    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;
    		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
    		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
    		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;
    		return this.normalize();
    	}
    	divide( v ) {
    		this.x /= v.x;
    		this.y /= v.y;
    		this.z /= v.z;
    		return this;
    	}
    	divideScalar( scalar ) {
    		return this.multiplyScalar( 1 / scalar );
    	}
    	min( v ) {
    		this.x = Math.min( this.x, v.x );
    		this.y = Math.min( this.y, v.y );
    		this.z = Math.min( this.z, v.z );
    		return this;
    	}
    	max( v ) {
    		this.x = Math.max( this.x, v.x );
    		this.y = Math.max( this.y, v.y );
    		this.z = Math.max( this.z, v.z );
    		return this;
    	}
    	clamp( min, max ) {
    		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
    		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
    		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
    		return this;
    	}
    	clampScalar( minVal, maxVal ) {
    		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
    		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
    		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
    		return this;
    	}
    	clampLength( min, max ) {
    		const length = this.length();
    		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
    	}
    	floor() {
    		this.x = Math.floor( this.x );
    		this.y = Math.floor( this.y );
    		this.z = Math.floor( this.z );
    		return this;
    	}
    	ceil() {
    		this.x = Math.ceil( this.x );
    		this.y = Math.ceil( this.y );
    		this.z = Math.ceil( this.z );
    		return this;
    	}
    	round() {
    		this.x = Math.round( this.x );
    		this.y = Math.round( this.y );
    		this.z = Math.round( this.z );
    		return this;
    	}
    	roundToZero() {
    		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
    		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
    		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
    		return this;
    	}
    	negate() {
    		this.x = - this.x;
    		this.y = - this.y;
    		this.z = - this.z;
    		return this;
    	}
    	dot( v ) {
    		return this.x * v.x + this.y * v.y + this.z * v.z;
    	}
    	lengthSq() {
    		return this.x * this.x + this.y * this.y + this.z * this.z;
    	}
    	length() {
    		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );
    	}
    	manhattanLength() {
    		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );
    	}
    	normalize() {
    		return this.divideScalar( this.length() || 1 );
    	}
    	setLength( length ) {
    		return this.normalize().multiplyScalar( length );
    	}
    	lerp( v, alpha ) {
    		this.x += ( v.x - this.x ) * alpha;
    		this.y += ( v.y - this.y ) * alpha;
    		this.z += ( v.z - this.z ) * alpha;
    		return this;
    	}
    	lerpVectors( v1, v2, alpha ) {
    		this.x = v1.x + ( v2.x - v1.x ) * alpha;
    		this.y = v1.y + ( v2.y - v1.y ) * alpha;
    		this.z = v1.z + ( v2.z - v1.z ) * alpha;
    		return this;
    	}
    	cross( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );
    			return this.crossVectors( v, w );
    		}
    		return this.crossVectors( this, v );
    	}
    	crossVectors( a, b ) {
    		const ax = a.x, ay = a.y, az = a.z;
    		const bx = b.x, by = b.y, bz = b.z;
    		this.x = ay * bz - az * by;
    		this.y = az * bx - ax * bz;
    		this.z = ax * by - ay * bx;
    		return this;
    	}
    	projectOnVector( v ) {
    		const denominator = v.lengthSq();
    		if ( denominator === 0 ) return this.set( 0, 0, 0 );
    		const scalar = v.dot( this ) / denominator;
    		return this.copy( v ).multiplyScalar( scalar );
    	}
    	projectOnPlane( planeNormal ) {
    		_vector$c.copy( this ).projectOnVector( planeNormal );
    		return this.sub( _vector$c );
    	}
    	reflect( normal ) {
    		return this.sub( _vector$c.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );
    	}
    	angleTo( v ) {
    		const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );
    		if ( denominator === 0 ) return Math.PI / 2;
    		const theta = this.dot( v ) / denominator;
    		return Math.acos( MathUtils$1.clamp( theta, - 1, 1 ) );
    	}
    	distanceTo( v ) {
    		return Math.sqrt( this.distanceToSquared( v ) );
    	}
    	distanceToSquared( v ) {
    		const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
    		return dx * dx + dy * dy + dz * dz;
    	}
    	manhattanDistanceTo( v ) {
    		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );
    	}
    	setFromSpherical( s ) {
    		return this.setFromSphericalCoords( s.radius, s.phi, s.theta );
    	}
    	setFromSphericalCoords( radius, phi, theta ) {
    		const sinPhiRadius = Math.sin( phi ) * radius;
    		this.x = sinPhiRadius * Math.sin( theta );
    		this.y = Math.cos( phi ) * radius;
    		this.z = sinPhiRadius * Math.cos( theta );
    		return this;
    	}
    	setFromCylindrical( c ) {
    		return this.setFromCylindricalCoords( c.radius, c.theta, c.y );
    	}
    	setFromCylindricalCoords( radius, theta, y ) {
    		this.x = radius * Math.sin( theta );
    		this.y = y;
    		this.z = radius * Math.cos( theta );
    		return this;
    	}
    	setFromMatrixPosition( m ) {
    		const e = m.elements;
    		this.x = e[ 12 ];
    		this.y = e[ 13 ];
    		this.z = e[ 14 ];
    		return this;
    	}
    	setFromMatrixScale( m ) {
    		const sx = this.setFromMatrixColumn( m, 0 ).length();
    		const sy = this.setFromMatrixColumn( m, 1 ).length();
    		const sz = this.setFromMatrixColumn( m, 2 ).length();
    		this.x = sx;
    		this.y = sy;
    		this.z = sz;
    		return this;
    	}
    	setFromMatrixColumn( m, index ) {
    		return this.fromArray( m.elements, index * 4 );
    	}
    	setFromMatrix3Column( m, index ) {
    		return this.fromArray( m.elements, index * 3 );
    	}
    	equals( v ) {
    		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this.x = array[ offset ];
    		this.y = array[ offset + 1 ];
    		this.z = array[ offset + 2 ];
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this.x;
    		array[ offset + 1 ] = this.y;
    		array[ offset + 2 ] = this.z;
    		return array;
    	}
    	fromBufferAttribute( attribute, index, offset ) {
    		if ( offset !== undefined ) {
    			console.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );
    		}
    		this.x = attribute.getX( index );
    		this.y = attribute.getY( index );
    		this.z = attribute.getZ( index );
    		return this;
    	}
    	random() {
    		this.x = Math.random();
    		this.y = Math.random();
    		this.z = Math.random();
    		return this;
    	}
    };
    const _vector$c = new Vector3$1();
    const _quaternion$2$1 = new Quaternion$1();
    let Matrix4$1 = class Matrix4 {
    	constructor() {
    		Object.defineProperty( this, 'isMatrix4', { value: true } );
    		this.elements = [
    			1, 0, 0, 0,
    			0, 1, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1
    		];
    		if ( arguments.length > 0 ) {
    			console.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );
    		}
    	}
    	set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {
    		const te = this.elements;
    		te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
    		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
    		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
    		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;
    		return this;
    	}
    	identity() {
    		this.set(
    			1, 0, 0, 0,
    			0, 1, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	clone() {
    		return new Matrix4$1().fromArray( this.elements );
    	}
    	copy( m ) {
    		const te = this.elements;
    		const me = m.elements;
    		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
    		te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
    		te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
    		te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];
    		return this;
    	}
    	copyPosition( m ) {
    		const te = this.elements, me = m.elements;
    		te[ 12 ] = me[ 12 ];
    		te[ 13 ] = me[ 13 ];
    		te[ 14 ] = me[ 14 ];
    		return this;
    	}
    	extractBasis( xAxis, yAxis, zAxis ) {
    		xAxis.setFromMatrixColumn( this, 0 );
    		yAxis.setFromMatrixColumn( this, 1 );
    		zAxis.setFromMatrixColumn( this, 2 );
    		return this;
    	}
    	makeBasis( xAxis, yAxis, zAxis ) {
    		this.set(
    			xAxis.x, yAxis.x, zAxis.x, 0,
    			xAxis.y, yAxis.y, zAxis.y, 0,
    			xAxis.z, yAxis.z, zAxis.z, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	extractRotation( m ) {
    		const te = this.elements;
    		const me = m.elements;
    		const scaleX = 1 / _v1$1$1.setFromMatrixColumn( m, 0 ).length();
    		const scaleY = 1 / _v1$1$1.setFromMatrixColumn( m, 1 ).length();
    		const scaleZ = 1 / _v1$1$1.setFromMatrixColumn( m, 2 ).length();
    		te[ 0 ] = me[ 0 ] * scaleX;
    		te[ 1 ] = me[ 1 ] * scaleX;
    		te[ 2 ] = me[ 2 ] * scaleX;
    		te[ 3 ] = 0;
    		te[ 4 ] = me[ 4 ] * scaleY;
    		te[ 5 ] = me[ 5 ] * scaleY;
    		te[ 6 ] = me[ 6 ] * scaleY;
    		te[ 7 ] = 0;
    		te[ 8 ] = me[ 8 ] * scaleZ;
    		te[ 9 ] = me[ 9 ] * scaleZ;
    		te[ 10 ] = me[ 10 ] * scaleZ;
    		te[ 11 ] = 0;
    		te[ 12 ] = 0;
    		te[ 13 ] = 0;
    		te[ 14 ] = 0;
    		te[ 15 ] = 1;
    		return this;
    	}
    	makeRotationFromEuler( euler ) {
    		if ( ! ( euler && euler.isEuler ) ) {
    			console.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );
    		}
    		const te = this.elements;
    		const x = euler.x, y = euler.y, z = euler.z;
    		const a = Math.cos( x ), b = Math.sin( x );
    		const c = Math.cos( y ), d = Math.sin( y );
    		const e = Math.cos( z ), f = Math.sin( z );
    		if ( euler.order === 'XYZ' ) {
    			const ae = a * e, af = a * f, be = b * e, bf = b * f;
    			te[ 0 ] = c * e;
    			te[ 4 ] = - c * f;
    			te[ 8 ] = d;
    			te[ 1 ] = af + be * d;
    			te[ 5 ] = ae - bf * d;
    			te[ 9 ] = - b * c;
    			te[ 2 ] = bf - ae * d;
    			te[ 6 ] = be + af * d;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'YXZ' ) {
    			const ce = c * e, cf = c * f, de = d * e, df = d * f;
    			te[ 0 ] = ce + df * b;
    			te[ 4 ] = de * b - cf;
    			te[ 8 ] = a * d;
    			te[ 1 ] = a * f;
    			te[ 5 ] = a * e;
    			te[ 9 ] = - b;
    			te[ 2 ] = cf * b - de;
    			te[ 6 ] = df + ce * b;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'ZXY' ) {
    			const ce = c * e, cf = c * f, de = d * e, df = d * f;
    			te[ 0 ] = ce - df * b;
    			te[ 4 ] = - a * f;
    			te[ 8 ] = de + cf * b;
    			te[ 1 ] = cf + de * b;
    			te[ 5 ] = a * e;
    			te[ 9 ] = df - ce * b;
    			te[ 2 ] = - a * d;
    			te[ 6 ] = b;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'ZYX' ) {
    			const ae = a * e, af = a * f, be = b * e, bf = b * f;
    			te[ 0 ] = c * e;
    			te[ 4 ] = be * d - af;
    			te[ 8 ] = ae * d + bf;
    			te[ 1 ] = c * f;
    			te[ 5 ] = bf * d + ae;
    			te[ 9 ] = af * d - be;
    			te[ 2 ] = - d;
    			te[ 6 ] = b * c;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'YZX' ) {
    			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
    			te[ 0 ] = c * e;
    			te[ 4 ] = bd - ac * f;
    			te[ 8 ] = bc * f + ad;
    			te[ 1 ] = f;
    			te[ 5 ] = a * e;
    			te[ 9 ] = - b * e;
    			te[ 2 ] = - d * e;
    			te[ 6 ] = ad * f + bc;
    			te[ 10 ] = ac - bd * f;
    		} else if ( euler.order === 'XZY' ) {
    			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
    			te[ 0 ] = c * e;
    			te[ 4 ] = - f;
    			te[ 8 ] = d * e;
    			te[ 1 ] = ac * f + bd;
    			te[ 5 ] = a * e;
    			te[ 9 ] = ad * f - bc;
    			te[ 2 ] = bc * f - ad;
    			te[ 6 ] = b * e;
    			te[ 10 ] = bd * f + ac;
    		}
    		te[ 3 ] = 0;
    		te[ 7 ] = 0;
    		te[ 11 ] = 0;
    		te[ 12 ] = 0;
    		te[ 13 ] = 0;
    		te[ 14 ] = 0;
    		te[ 15 ] = 1;
    		return this;
    	}
    	makeRotationFromQuaternion( q ) {
    		return this.compose( _zero$1, q, _one$1 );
    	}
    	lookAt( eye, target, up ) {
    		const te = this.elements;
    		_z$1.subVectors( eye, target );
    		if ( _z$1.lengthSq() === 0 ) {
    			_z$1.z = 1;
    		}
    		_z$1.normalize();
    		_x$1.crossVectors( up, _z$1 );
    		if ( _x$1.lengthSq() === 0 ) {
    			if ( Math.abs( up.z ) === 1 ) {
    				_z$1.x += 0.0001;
    			} else {
    				_z$1.z += 0.0001;
    			}
    			_z$1.normalize();
    			_x$1.crossVectors( up, _z$1 );
    		}
    		_x$1.normalize();
    		_y$1.crossVectors( _z$1, _x$1 );
    		te[ 0 ] = _x$1.x; te[ 4 ] = _y$1.x; te[ 8 ] = _z$1.x;
    		te[ 1 ] = _x$1.y; te[ 5 ] = _y$1.y; te[ 9 ] = _z$1.y;
    		te[ 2 ] = _x$1.z; te[ 6 ] = _y$1.z; te[ 10 ] = _z$1.z;
    		return this;
    	}
    	multiply( m, n ) {
    		if ( n !== undefined ) {
    			console.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );
    			return this.multiplyMatrices( m, n );
    		}
    		return this.multiplyMatrices( this, m );
    	}
    	premultiply( m ) {
    		return this.multiplyMatrices( m, this );
    	}
    	multiplyMatrices( a, b ) {
    		const ae = a.elements;
    		const be = b.elements;
    		const te = this.elements;
    		const a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
    		const a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
    		const a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
    		const a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];
    		const b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
    		const b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
    		const b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
    		const b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];
    		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
    		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
    		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
    		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
    		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
    		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
    		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
    		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
    		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
    		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
    		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
    		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
    		te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
    		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
    		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
    		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
    		return this;
    	}
    	multiplyScalar( s ) {
    		const te = this.elements;
    		te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
    		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
    		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
    		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;
    		return this;
    	}
    	determinant() {
    		const te = this.elements;
    		const n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
    		const n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
    		const n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
    		const n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];
    		return (
    			n41 * (
    				+ n14 * n23 * n32
    				 - n13 * n24 * n32
    				 - n14 * n22 * n33
    				 + n12 * n24 * n33
    				 + n13 * n22 * n34
    				 - n12 * n23 * n34
    			) +
    			n42 * (
    				+ n11 * n23 * n34
    				 - n11 * n24 * n33
    				 + n14 * n21 * n33
    				 - n13 * n21 * n34
    				 + n13 * n24 * n31
    				 - n14 * n23 * n31
    			) +
    			n43 * (
    				+ n11 * n24 * n32
    				 - n11 * n22 * n34
    				 - n14 * n21 * n32
    				 + n12 * n21 * n34
    				 + n14 * n22 * n31
    				 - n12 * n24 * n31
    			) +
    			n44 * (
    				- n13 * n22 * n31
    				 - n11 * n23 * n32
    				 + n11 * n22 * n33
    				 + n13 * n21 * n32
    				 - n12 * n21 * n33
    				 + n12 * n23 * n31
    			)
    		);
    	}
    	transpose() {
    		const te = this.elements;
    		let tmp;
    		tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
    		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
    		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;
    		tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
    		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
    		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;
    		return this;
    	}
    	setPosition( x, y, z ) {
    		const te = this.elements;
    		if ( x.isVector3 ) {
    			te[ 12 ] = x.x;
    			te[ 13 ] = x.y;
    			te[ 14 ] = x.z;
    		} else {
    			te[ 12 ] = x;
    			te[ 13 ] = y;
    			te[ 14 ] = z;
    		}
    		return this;
    	}
    	getInverse( m, throwOnDegenerate ) {
    		if ( throwOnDegenerate !== undefined ) {
    			console.warn( "THREE.Matrix4: .getInverse() can no longer be configured to throw on degenerate." );
    		}
    		const te = this.elements,
    			me = m.elements,
    			n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ], n41 = me[ 3 ],
    			n12 = me[ 4 ], n22 = me[ 5 ], n32 = me[ 6 ], n42 = me[ 7 ],
    			n13 = me[ 8 ], n23 = me[ 9 ], n33 = me[ 10 ], n43 = me[ 11 ],
    			n14 = me[ 12 ], n24 = me[ 13 ], n34 = me[ 14 ], n44 = me[ 15 ],
    			t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
    			t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
    			t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
    			t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
    		const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
    		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
    		const detInv = 1 / det;
    		te[ 0 ] = t11 * detInv;
    		te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
    		te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
    		te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;
    		te[ 4 ] = t12 * detInv;
    		te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
    		te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
    		te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;
    		te[ 8 ] = t13 * detInv;
    		te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
    		te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
    		te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;
    		te[ 12 ] = t14 * detInv;
    		te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
    		te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
    		te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;
    		return this;
    	}
    	scale( v ) {
    		const te = this.elements;
    		const x = v.x, y = v.y, z = v.z;
    		te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
    		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
    		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
    		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;
    		return this;
    	}
    	getMaxScaleOnAxis() {
    		const te = this.elements;
    		const scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
    		const scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
    		const scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];
    		return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );
    	}
    	makeTranslation( x, y, z ) {
    		this.set(
    			1, 0, 0, x,
    			0, 1, 0, y,
    			0, 0, 1, z,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationX( theta ) {
    		const c = Math.cos( theta ), s = Math.sin( theta );
    		this.set(
    			1, 0, 0, 0,
    			0, c, - s, 0,
    			0, s, c, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationY( theta ) {
    		const c = Math.cos( theta ), s = Math.sin( theta );
    		this.set(
    			 c, 0, s, 0,
    			 0, 1, 0, 0,
    			- s, 0, c, 0,
    			 0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationZ( theta ) {
    		const c = Math.cos( theta ), s = Math.sin( theta );
    		this.set(
    			c, - s, 0, 0,
    			s, c, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationAxis( axis, angle ) {
    		const c = Math.cos( angle );
    		const s = Math.sin( angle );
    		const t = 1 - c;
    		const x = axis.x, y = axis.y, z = axis.z;
    		const tx = t * x, ty = t * y;
    		this.set(
    			tx * x + c, tx * y - s * z, tx * z + s * y, 0,
    			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
    			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeScale( x, y, z ) {
    		this.set(
    			x, 0, 0, 0,
    			0, y, 0, 0,
    			0, 0, z, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeShear( x, y, z ) {
    		this.set(
    			1, y, z, 0,
    			x, 1, z, 0,
    			x, y, 1, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	compose( position, quaternion, scale ) {
    		const te = this.elements;
    		const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
    		const x2 = x + x,	y2 = y + y, z2 = z + z;
    		const xx = x * x2, xy = x * y2, xz = x * z2;
    		const yy = y * y2, yz = y * z2, zz = z * z2;
    		const wx = w * x2, wy = w * y2, wz = w * z2;
    		const sx = scale.x, sy = scale.y, sz = scale.z;
    		te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
    		te[ 1 ] = ( xy + wz ) * sx;
    		te[ 2 ] = ( xz - wy ) * sx;
    		te[ 3 ] = 0;
    		te[ 4 ] = ( xy - wz ) * sy;
    		te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
    		te[ 6 ] = ( yz + wx ) * sy;
    		te[ 7 ] = 0;
    		te[ 8 ] = ( xz + wy ) * sz;
    		te[ 9 ] = ( yz - wx ) * sz;
    		te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
    		te[ 11 ] = 0;
    		te[ 12 ] = position.x;
    		te[ 13 ] = position.y;
    		te[ 14 ] = position.z;
    		te[ 15 ] = 1;
    		return this;
    	}
    	decompose( position, quaternion, scale ) {
    		const te = this.elements;
    		let sx = _v1$1$1.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
    		const sy = _v1$1$1.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
    		const sz = _v1$1$1.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();
    		const det = this.determinant();
    		if ( det < 0 ) sx = - sx;
    		position.x = te[ 12 ];
    		position.y = te[ 13 ];
    		position.z = te[ 14 ];
    		_m1$1$1.copy( this );
    		const invSX = 1 / sx;
    		const invSY = 1 / sy;
    		const invSZ = 1 / sz;
    		_m1$1$1.elements[ 0 ] *= invSX;
    		_m1$1$1.elements[ 1 ] *= invSX;
    		_m1$1$1.elements[ 2 ] *= invSX;
    		_m1$1$1.elements[ 4 ] *= invSY;
    		_m1$1$1.elements[ 5 ] *= invSY;
    		_m1$1$1.elements[ 6 ] *= invSY;
    		_m1$1$1.elements[ 8 ] *= invSZ;
    		_m1$1$1.elements[ 9 ] *= invSZ;
    		_m1$1$1.elements[ 10 ] *= invSZ;
    		quaternion.setFromRotationMatrix( _m1$1$1 );
    		scale.x = sx;
    		scale.y = sy;
    		scale.z = sz;
    		return this;
    	}
    	makePerspective( left, right, top, bottom, near, far ) {
    		if ( far === undefined ) {
    			console.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );
    		}
    		const te = this.elements;
    		const x = 2 * near / ( right - left );
    		const y = 2 * near / ( top - bottom );
    		const a = ( right + left ) / ( right - left );
    		const b = ( top + bottom ) / ( top - bottom );
    		const c = - ( far + near ) / ( far - near );
    		const d = - 2 * far * near / ( far - near );
    		te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
    		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
    		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
    		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;
    		return this;
    	}
    	makeOrthographic( left, right, top, bottom, near, far ) {
    		const te = this.elements;
    		const w = 1.0 / ( right - left );
    		const h = 1.0 / ( top - bottom );
    		const p = 1.0 / ( far - near );
    		const x = ( right + left ) * w;
    		const y = ( top + bottom ) * h;
    		const z = ( far + near ) * p;
    		te[ 0 ] = 2 * w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
    		te[ 1 ] = 0;	te[ 5 ] = 2 * h;	te[ 9 ] = 0;	te[ 13 ] = - y;
    		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 * p;	te[ 14 ] = - z;
    		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;
    		return this;
    	}
    	equals( matrix ) {
    		const te = this.elements;
    		const me = matrix.elements;
    		for ( let i = 0; i < 16; i ++ ) {
    			if ( te[ i ] !== me[ i ] ) return false;
    		}
    		return true;
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		for ( let i = 0; i < 16; i ++ ) {
    			this.elements[ i ] = array[ i + offset ];
    		}
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		const te = this.elements;
    		array[ offset ] = te[ 0 ];
    		array[ offset + 1 ] = te[ 1 ];
    		array[ offset + 2 ] = te[ 2 ];
    		array[ offset + 3 ] = te[ 3 ];
    		array[ offset + 4 ] = te[ 4 ];
    		array[ offset + 5 ] = te[ 5 ];
    		array[ offset + 6 ] = te[ 6 ];
    		array[ offset + 7 ] = te[ 7 ];
    		array[ offset + 8 ] = te[ 8 ];
    		array[ offset + 9 ] = te[ 9 ];
    		array[ offset + 10 ] = te[ 10 ];
    		array[ offset + 11 ] = te[ 11 ];
    		array[ offset + 12 ] = te[ 12 ];
    		array[ offset + 13 ] = te[ 13 ];
    		array[ offset + 14 ] = te[ 14 ];
    		array[ offset + 15 ] = te[ 15 ];
    		return array;
    	}
    };
    const _v1$1$1 = new Vector3$1();
    const _m1$1$1 = new Matrix4$1();
    const _zero$1 = new Vector3$1( 0, 0, 0 );
    const _one$1 = new Vector3$1( 1, 1, 1 );
    const _x$1 = new Vector3$1();
    const _y$1 = new Vector3$1();
    const _z$1 = new Vector3$1();
    function EventDispatcher$1() {}
    Object.assign( EventDispatcher$1.prototype, {
    	addEventListener: function ( type, listener ) {
    		if ( this._listeners === undefined ) this._listeners = {};
    		const listeners = this._listeners;
    		if ( listeners[ type ] === undefined ) {
    			listeners[ type ] = [];
    		}
    		if ( listeners[ type ].indexOf( listener ) === - 1 ) {
    			listeners[ type ].push( listener );
    		}
    	},
    	hasEventListener: function ( type, listener ) {
    		if ( this._listeners === undefined ) return false;
    		const listeners = this._listeners;
    		return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;
    	},
    	removeEventListener: function ( type, listener ) {
    		if ( this._listeners === undefined ) return;
    		const listeners = this._listeners;
    		const listenerArray = listeners[ type ];
    		if ( listenerArray !== undefined ) {
    			const index = listenerArray.indexOf( listener );
    			if ( index !== - 1 ) {
    				listenerArray.splice( index, 1 );
    			}
    		}
    	},
    	dispatchEvent: function ( event ) {
    		if ( this._listeners === undefined ) return;
    		const listeners = this._listeners;
    		const listenerArray = listeners[ event.type ];
    		if ( listenerArray !== undefined ) {
    			event.target = this;
    			const array = listenerArray.slice( 0 );
    			for ( let i = 0, l = array.length; i < l; i ++ ) {
    				array[ i ].call( this, event );
    			}
    		}
    	}
    } );
    let Euler$1 = class Euler {
    	constructor( x = 0, y = 0, z = 0, order = Euler$1.DefaultOrder ) {
    		Object.defineProperty( this, 'isEuler', { value: true } );
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._order = order;
    	}
    	get x() {
    		return this._x;
    	}
    	set x( value ) {
    		this._x = value;
    		this._onChangeCallback();
    	}
    	get y() {
    		return this._y;
    	}
    	set y( value ) {
    		this._y = value;
    		this._onChangeCallback();
    	}
    	get z() {
    		return this._z;
    	}
    	set z( value ) {
    		this._z = value;
    		this._onChangeCallback();
    	}
    	get order() {
    		return this._order;
    	}
    	set order( value ) {
    		this._order = value;
    		this._onChangeCallback();
    	}
    	set( x, y, z, order ) {
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._order = order || this._order;
    		this._onChangeCallback();
    		return this;
    	}
    	clone() {
    		return new this.constructor( this._x, this._y, this._z, this._order );
    	}
    	copy( euler ) {
    		this._x = euler._x;
    		this._y = euler._y;
    		this._z = euler._z;
    		this._order = euler._order;
    		this._onChangeCallback();
    		return this;
    	}
    	setFromRotationMatrix( m, order, update ) {
    		const clamp = MathUtils$1.clamp;
    		const te = m.elements;
    		const m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
    		const m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
    		const m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
    		order = order || this._order;
    		switch ( order ) {
    			case 'XYZ':
    				this._y = Math.asin( clamp( m13, - 1, 1 ) );
    				if ( Math.abs( m13 ) < 0.9999999 ) {
    					this._x = Math.atan2( - m23, m33 );
    					this._z = Math.atan2( - m12, m11 );
    				} else {
    					this._x = Math.atan2( m32, m22 );
    					this._z = 0;
    				}
    				break;
    			case 'YXZ':
    				this._x = Math.asin( - clamp( m23, - 1, 1 ) );
    				if ( Math.abs( m23 ) < 0.9999999 ) {
    					this._y = Math.atan2( m13, m33 );
    					this._z = Math.atan2( m21, m22 );
    				} else {
    					this._y = Math.atan2( - m31, m11 );
    					this._z = 0;
    				}
    				break;
    			case 'ZXY':
    				this._x = Math.asin( clamp( m32, - 1, 1 ) );
    				if ( Math.abs( m32 ) < 0.9999999 ) {
    					this._y = Math.atan2( - m31, m33 );
    					this._z = Math.atan2( - m12, m22 );
    				} else {
    					this._y = 0;
    					this._z = Math.atan2( m21, m11 );
    				}
    				break;
    			case 'ZYX':
    				this._y = Math.asin( - clamp( m31, - 1, 1 ) );
    				if ( Math.abs( m31 ) < 0.9999999 ) {
    					this._x = Math.atan2( m32, m33 );
    					this._z = Math.atan2( m21, m11 );
    				} else {
    					this._x = 0;
    					this._z = Math.atan2( - m12, m22 );
    				}
    				break;
    			case 'YZX':
    				this._z = Math.asin( clamp( m21, - 1, 1 ) );
    				if ( Math.abs( m21 ) < 0.9999999 ) {
    					this._x = Math.atan2( - m23, m22 );
    					this._y = Math.atan2( - m31, m11 );
    				} else {
    					this._x = 0;
    					this._y = Math.atan2( m13, m33 );
    				}
    				break;
    			case 'XZY':
    				this._z = Math.asin( - clamp( m12, - 1, 1 ) );
    				if ( Math.abs( m12 ) < 0.9999999 ) {
    					this._x = Math.atan2( m32, m22 );
    					this._y = Math.atan2( m13, m11 );
    				} else {
    					this._x = Math.atan2( - m23, m33 );
    					this._y = 0;
    				}
    				break;
    			default:
    				console.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );
    		}
    		this._order = order;
    		if ( update !== false ) this._onChangeCallback();
    		return this;
    	}
    	setFromQuaternion( q, order, update ) {
    		_matrix$1.makeRotationFromQuaternion( q );
    		return this.setFromRotationMatrix( _matrix$1, order, update );
    	}
    	setFromVector3( v, order ) {
    		return this.set( v.x, v.y, v.z, order || this._order );
    	}
    	reorder( newOrder ) {
    		_quaternion$1$1.setFromEuler( this );
    		return this.setFromQuaternion( _quaternion$1$1, newOrder );
    	}
    	equals( euler ) {
    		return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );
    	}
    	fromArray( array ) {
    		this._x = array[ 0 ];
    		this._y = array[ 1 ];
    		this._z = array[ 2 ];
    		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];
    		this._onChangeCallback();
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this._x;
    		array[ offset + 1 ] = this._y;
    		array[ offset + 2 ] = this._z;
    		array[ offset + 3 ] = this._order;
    		return array;
    	}
    	toVector3( optionalResult ) {
    		if ( optionalResult ) {
    			return optionalResult.set( this._x, this._y, this._z );
    		} else {
    			return new Vector3$1( this._x, this._y, this._z );
    		}
    	}
    	_onChange( callback ) {
    		this._onChangeCallback = callback;
    		return this;
    	}
    	_onChangeCallback() {}
    };
    Euler$1.DefaultOrder = 'XYZ';
    Euler$1.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];
    const _matrix$1 = new Matrix4$1();
    const _quaternion$1$1 = new Quaternion$1();
    let Layers$1 = class Layers {
    	constructor() {
    		this.mask = 1 | 0;
    	}
    	set( channel ) {
    		this.mask = 1 << channel | 0;
    	}
    	enable( channel ) {
    		this.mask |= 1 << channel | 0;
    	}
    	enableAll() {
    		this.mask = 0xffffffff | 0;
    	}
    	toggle( channel ) {
    		this.mask ^= 1 << channel | 0;
    	}
    	disable( channel ) {
    		this.mask &= ~ ( 1 << channel | 0 );
    	}
    	disableAll() {
    		this.mask = 0;
    	}
    	test( layers ) {
    		return ( this.mask & layers.mask ) !== 0;
    	}
    };
    let Matrix3$1 = class Matrix3 {
    	constructor() {
    		Object.defineProperty( this, 'isMatrix3', { value: true } );
    		this.elements = [
    			1, 0, 0,
    			0, 1, 0,
    			0, 0, 1
    		];
    		if ( arguments.length > 0 ) {
    			console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );
    		}
    	}
    	set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
    		const te = this.elements;
    		te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
    		te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
    		te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;
    		return this;
    	}
    	identity() {
    		this.set(
    			1, 0, 0,
    			0, 1, 0,
    			0, 0, 1
    		);
    		return this;
    	}
    	clone() {
    		return new this.constructor().fromArray( this.elements );
    	}
    	copy( m ) {
    		const te = this.elements;
    		const me = m.elements;
    		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
    		te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
    		te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];
    		return this;
    	}
    	extractBasis( xAxis, yAxis, zAxis ) {
    		xAxis.setFromMatrix3Column( this, 0 );
    		yAxis.setFromMatrix3Column( this, 1 );
    		zAxis.setFromMatrix3Column( this, 2 );
    		return this;
    	}
    	setFromMatrix4( m ) {
    		const me = m.elements;
    		this.set(
    			me[ 0 ], me[ 4 ], me[ 8 ],
    			me[ 1 ], me[ 5 ], me[ 9 ],
    			me[ 2 ], me[ 6 ], me[ 10 ]
    		);
    		return this;
    	}
    	multiply( m ) {
    		return this.multiplyMatrices( this, m );
    	}
    	premultiply( m ) {
    		return this.multiplyMatrices( m, this );
    	}
    	multiplyMatrices( a, b ) {
    		const ae = a.elements;
    		const be = b.elements;
    		const te = this.elements;
    		const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
    		const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
    		const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];
    		const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
    		const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
    		const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];
    		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
    		te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
    		te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;
    		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
    		te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
    		te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;
    		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
    		te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
    		te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;
    		return this;
    	}
    	multiplyScalar( s ) {
    		const te = this.elements;
    		te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
    		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
    		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;
    		return this;
    	}
    	determinant() {
    		const te = this.elements;
    		const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
    			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
    			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];
    		return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
    	}
    	getInverse( matrix, throwOnDegenerate ) {
    		if ( throwOnDegenerate !== undefined ) {
    			console.warn( "THREE.Matrix3: .getInverse() can no longer be configured to throw on degenerate." );
    		}
    		const me = matrix.elements,
    			te = this.elements,
    			n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ],
    			n12 = me[ 3 ], n22 = me[ 4 ], n32 = me[ 5 ],
    			n13 = me[ 6 ], n23 = me[ 7 ], n33 = me[ 8 ],
    			t11 = n33 * n22 - n32 * n23,
    			t12 = n32 * n13 - n33 * n12,
    			t13 = n23 * n12 - n22 * n13,
    			det = n11 * t11 + n21 * t12 + n31 * t13;
    		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );
    		const detInv = 1 / det;
    		te[ 0 ] = t11 * detInv;
    		te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
    		te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;
    		te[ 3 ] = t12 * detInv;
    		te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
    		te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;
    		te[ 6 ] = t13 * detInv;
    		te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
    		te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;
    		return this;
    	}
    	transpose() {
    		let tmp;
    		const m = this.elements;
    		tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
    		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
    		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;
    		return this;
    	}
    	getNormalMatrix( matrix4 ) {
    		return this.setFromMatrix4( matrix4 ).getInverse( this ).transpose();
    	}
    	transposeIntoArray( r ) {
    		const m = this.elements;
    		r[ 0 ] = m[ 0 ];
    		r[ 1 ] = m[ 3 ];
    		r[ 2 ] = m[ 6 ];
    		r[ 3 ] = m[ 1 ];
    		r[ 4 ] = m[ 4 ];
    		r[ 5 ] = m[ 7 ];
    		r[ 6 ] = m[ 2 ];
    		r[ 7 ] = m[ 5 ];
    		r[ 8 ] = m[ 8 ];
    		return this;
    	}
    	setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {
    		const c = Math.cos( rotation );
    		const s = Math.sin( rotation );
    		this.set(
    			sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
    			- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
    			0, 0, 1
    		);
    	}
    	scale( sx, sy ) {
    		const te = this.elements;
    		te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
    		te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;
    		return this;
    	}
    	rotate( theta ) {
    		const c = Math.cos( theta );
    		const s = Math.sin( theta );
    		const te = this.elements;
    		const a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
    		const a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];
    		te[ 0 ] = c * a11 + s * a21;
    		te[ 3 ] = c * a12 + s * a22;
    		te[ 6 ] = c * a13 + s * a23;
    		te[ 1 ] = - s * a11 + c * a21;
    		te[ 4 ] = - s * a12 + c * a22;
    		te[ 7 ] = - s * a13 + c * a23;
    		return this;
    	}
    	translate( tx, ty ) {
    		const te = this.elements;
    		te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
    		te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];
    		return this;
    	}
    	equals( matrix ) {
    		const te = this.elements;
    		const me = matrix.elements;
    		for ( let i = 0; i < 9; i ++ ) {
    			if ( te[ i ] !== me[ i ] ) return false;
    		}
    		return true;
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		for ( let i = 0; i < 9; i ++ ) {
    			this.elements[ i ] = array[ i + offset ];
    		}
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		const te = this.elements;
    		array[ offset ] = te[ 0 ];
    		array[ offset + 1 ] = te[ 1 ];
    		array[ offset + 2 ] = te[ 2 ];
    		array[ offset + 3 ] = te[ 3 ];
    		array[ offset + 4 ] = te[ 4 ];
    		array[ offset + 5 ] = te[ 5 ];
    		array[ offset + 6 ] = te[ 6 ];
    		array[ offset + 7 ] = te[ 7 ];
    		array[ offset + 8 ] = te[ 8 ];
    		return array;
    	}
    };
    let _object3DId$1 = 0;
    const _v1$6 = new Vector3$1();
    const _q1$1 = new Quaternion$1();
    const _m1$4 = new Matrix4$1();
    const _target$1 = new Vector3$1();
    const _position$4 = new Vector3$1();
    const _scale$3 = new Vector3$1();
    const _quaternion$5 = new Quaternion$1();
    const _xAxis$1 = new Vector3$1( 1, 0, 0 );
    const _yAxis$1 = new Vector3$1( 0, 1, 0 );
    const _zAxis$1 = new Vector3$1( 0, 0, 1 );
    const _addedEvent$1 = { type: 'added' };
    const _removedEvent$1 = { type: 'removed' };
    function Object3D$1() {
    	Object.defineProperty( this, 'id', { value: _object3DId$1 ++ } );
    	this.uuid = MathUtils$1.generateUUID();
    	this.name = '';
    	this.type = 'Object3D';
    	this.parent = null;
    	this.children = [];
    	this.up = Object3D$1.DefaultUp.clone();
    	const position = new Vector3$1();
    	const rotation = new Euler$1();
    	const quaternion = new Quaternion$1();
    	const scale = new Vector3$1( 1, 1, 1 );
    	function onRotationChange() {
    		quaternion.setFromEuler( rotation, false );
    	}
    	function onQuaternionChange() {
    		rotation.setFromQuaternion( quaternion, undefined, false );
    	}
    	rotation._onChange( onRotationChange );
    	quaternion._onChange( onQuaternionChange );
    	Object.defineProperties( this, {
    		position: {
    			configurable: true,
    			enumerable: true,
    			value: position
    		},
    		rotation: {
    			configurable: true,
    			enumerable: true,
    			value: rotation
    		},
    		quaternion: {
    			configurable: true,
    			enumerable: true,
    			value: quaternion
    		},
    		scale: {
    			configurable: true,
    			enumerable: true,
    			value: scale
    		},
    		modelViewMatrix: {
    			value: new Matrix4$1()
    		},
    		normalMatrix: {
    			value: new Matrix3$1()
    		}
    	} );
    	this.matrix = new Matrix4$1();
    	this.matrixWorld = new Matrix4$1();
    	this.matrixAutoUpdate = Object3D$1.DefaultMatrixAutoUpdate;
    	this.matrixWorldNeedsUpdate = false;
    	this.layers = new Layers$1();
    	this.visible = true;
    	this.castShadow = false;
    	this.receiveShadow = false;
    	this.frustumCulled = true;
    	this.renderOrder = 0;
    	this.userData = {};
    }
    Object3D$1.DefaultUp = new Vector3$1( 0, 1, 0 );
    Object3D$1.DefaultMatrixAutoUpdate = true;
    Object3D$1.prototype = Object.assign( Object.create( EventDispatcher$1.prototype ), {
    	constructor: Object3D$1,
    	isObject3D: true,
    	onBeforeRender: function () {},
    	onAfterRender: function () {},
    	applyMatrix4: function ( matrix ) {
    		if ( this.matrixAutoUpdate ) this.updateMatrix();
    		this.matrix.premultiply( matrix );
    		this.matrix.decompose( this.position, this.quaternion, this.scale );
    	},
    	applyQuaternion: function ( q ) {
    		this.quaternion.premultiply( q );
    		return this;
    	},
    	setRotationFromAxisAngle: function ( axis, angle ) {
    		this.quaternion.setFromAxisAngle( axis, angle );
    	},
    	setRotationFromEuler: function ( euler ) {
    		this.quaternion.setFromEuler( euler, true );
    	},
    	setRotationFromMatrix: function ( m ) {
    		this.quaternion.setFromRotationMatrix( m );
    	},
    	setRotationFromQuaternion: function ( q ) {
    		this.quaternion.copy( q );
    	},
    	rotateOnAxis: function ( axis, angle ) {
    		_q1$1.setFromAxisAngle( axis, angle );
    		this.quaternion.multiply( _q1$1 );
    		return this;
    	},
    	rotateOnWorldAxis: function ( axis, angle ) {
    		_q1$1.setFromAxisAngle( axis, angle );
    		this.quaternion.premultiply( _q1$1 );
    		return this;
    	},
    	rotateX: function ( angle ) {
    		return this.rotateOnAxis( _xAxis$1, angle );
    	},
    	rotateY: function ( angle ) {
    		return this.rotateOnAxis( _yAxis$1, angle );
    	},
    	rotateZ: function ( angle ) {
    		return this.rotateOnAxis( _zAxis$1, angle );
    	},
    	translateOnAxis: function ( axis, distance ) {
    		_v1$6.copy( axis ).applyQuaternion( this.quaternion );
    		this.position.add( _v1$6.multiplyScalar( distance ) );
    		return this;
    	},
    	translateX: function ( distance ) {
    		return this.translateOnAxis( _xAxis$1, distance );
    	},
    	translateY: function ( distance ) {
    		return this.translateOnAxis( _yAxis$1, distance );
    	},
    	translateZ: function ( distance ) {
    		return this.translateOnAxis( _zAxis$1, distance );
    	},
    	localToWorld: function ( vector ) {
    		return vector.applyMatrix4( this.matrixWorld );
    	},
    	worldToLocal: function ( vector ) {
    		return vector.applyMatrix4( _m1$4.getInverse( this.matrixWorld ) );
    	},
    	lookAt: function ( x, y, z ) {
    		if ( x.isVector3 ) {
    			_target$1.copy( x );
    		} else {
    			_target$1.set( x, y, z );
    		}
    		const parent = this.parent;
    		this.updateWorldMatrix( true, false );
    		_position$4.setFromMatrixPosition( this.matrixWorld );
    		if ( this.isCamera || this.isLight ) {
    			_m1$4.lookAt( _position$4, _target$1, this.up );
    		} else {
    			_m1$4.lookAt( _target$1, _position$4, this.up );
    		}
    		this.quaternion.setFromRotationMatrix( _m1$4 );
    		if ( parent ) {
    			_m1$4.extractRotation( parent.matrixWorld );
    			_q1$1.setFromRotationMatrix( _m1$4 );
    			this.quaternion.premultiply( _q1$1.inverse() );
    		}
    	},
    	add: function ( object ) {
    		if ( arguments.length > 1 ) {
    			for ( let i = 0; i < arguments.length; i ++ ) {
    				this.add( arguments[ i ] );
    			}
    			return this;
    		}
    		if ( object === this ) {
    			console.error( "THREE.Object3D.add: object can't be added as a child of itself.", object );
    			return this;
    		}
    		if ( ( object && object.isObject3D ) ) {
    			if ( object.parent !== null ) {
    				object.parent.remove( object );
    			}
    			object.parent = this;
    			this.children.push( object );
    			object.dispatchEvent( _addedEvent$1 );
    		} else {
    			console.error( "THREE.Object3D.add: object not an instance of THREE.Object3D.", object );
    		}
    		return this;
    	},
    	remove: function ( object ) {
    		if ( arguments.length > 1 ) {
    			for ( let i = 0; i < arguments.length; i ++ ) {
    				this.remove( arguments[ i ] );
    			}
    			return this;
    		}
    		const index = this.children.indexOf( object );
    		if ( index !== - 1 ) {
    			object.parent = null;
    			this.children.splice( index, 1 );
    			object.dispatchEvent( _removedEvent$1 );
    		}
    		return this;
    	},
    	attach: function ( object ) {
    		this.updateWorldMatrix( true, false );
    		_m1$4.getInverse( this.matrixWorld );
    		if ( object.parent !== null ) {
    			object.parent.updateWorldMatrix( true, false );
    			_m1$4.multiply( object.parent.matrixWorld );
    		}
    		object.applyMatrix4( _m1$4 );
    		object.updateWorldMatrix( false, false );
    		this.add( object );
    		return this;
    	},
    	getObjectById: function ( id ) {
    		return this.getObjectByProperty( 'id', id );
    	},
    	getObjectByName: function ( name ) {
    		return this.getObjectByProperty( 'name', name );
    	},
    	getObjectByProperty: function ( name, value ) {
    		if ( this[ name ] === value ) return this;
    		for ( let i = 0, l = this.children.length; i < l; i ++ ) {
    			const child = this.children[ i ];
    			const object = child.getObjectByProperty( name, value );
    			if ( object !== undefined ) {
    				return object;
    			}
    		}
    		return undefined;
    	},
    	getWorldPosition: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldPosition() target is now required' );
    			target = new Vector3$1();
    		}
    		this.updateMatrixWorld( true );
    		return target.setFromMatrixPosition( this.matrixWorld );
    	},
    	getWorldQuaternion: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldQuaternion() target is now required' );
    			target = new Quaternion$1();
    		}
    		this.updateMatrixWorld( true );
    		this.matrixWorld.decompose( _position$4, target, _scale$3 );
    		return target;
    	},
    	getWorldScale: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldScale() target is now required' );
    			target = new Vector3$1();
    		}
    		this.updateMatrixWorld( true );
    		this.matrixWorld.decompose( _position$4, _quaternion$5, target );
    		return target;
    	},
    	getWorldDirection: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldDirection() target is now required' );
    			target = new Vector3$1();
    		}
    		this.updateMatrixWorld( true );
    		const e = this.matrixWorld.elements;
    		return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();
    	},
    	raycast: function () {},
    	traverse: function ( callback ) {
    		callback( this );
    		const children = this.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			children[ i ].traverse( callback );
    		}
    	},
    	traverseVisible: function ( callback ) {
    		if ( this.visible === false ) return;
    		callback( this );
    		const children = this.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			children[ i ].traverseVisible( callback );
    		}
    	},
    	traverseAncestors: function ( callback ) {
    		const parent = this.parent;
    		if ( parent !== null ) {
    			callback( parent );
    			parent.traverseAncestors( callback );
    		}
    	},
    	updateMatrix: function () {
    		this.matrix.compose( this.position, this.quaternion, this.scale );
    		this.matrixWorldNeedsUpdate = true;
    	},
    	updateMatrixWorld: function ( force ) {
    		if ( this.matrixAutoUpdate ) this.updateMatrix();
    		if ( this.matrixWorldNeedsUpdate || force ) {
    			if ( this.parent === null ) {
    				this.matrixWorld.copy( this.matrix );
    			} else {
    				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
    			}
    			this.matrixWorldNeedsUpdate = false;
    			force = true;
    		}
    		const children = this.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			children[ i ].updateMatrixWorld( force );
    		}
    	},
    	updateWorldMatrix: function ( updateParents, updateChildren ) {
    		const parent = this.parent;
    		if ( updateParents === true && parent !== null ) {
    			parent.updateWorldMatrix( true, false );
    		}
    		if ( this.matrixAutoUpdate ) this.updateMatrix();
    		if ( this.parent === null ) {
    			this.matrixWorld.copy( this.matrix );
    		} else {
    			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
    		}
    		if ( updateChildren === true ) {
    			const children = this.children;
    			for ( let i = 0, l = children.length; i < l; i ++ ) {
    				children[ i ].updateWorldMatrix( false, true );
    			}
    		}
    	},
    	toJSON: function ( meta ) {
    		const isRootObject = ( meta === undefined || typeof meta === 'string' );
    		const output = {};
    		if ( isRootObject ) {
    			meta = {
    				geometries: {},
    				materials: {},
    				textures: {},
    				images: {},
    				shapes: {}
    			};
    			output.metadata = {
    				version: 4.5,
    				type: 'Object',
    				generator: 'Object3D.toJSON'
    			};
    		}
    		const object = {};
    		object.uuid = this.uuid;
    		object.type = this.type;
    		if ( this.name !== '' ) object.name = this.name;
    		if ( this.castShadow === true ) object.castShadow = true;
    		if ( this.receiveShadow === true ) object.receiveShadow = true;
    		if ( this.visible === false ) object.visible = false;
    		if ( this.frustumCulled === false ) object.frustumCulled = false;
    		if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
    		if ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;
    		object.layers = this.layers.mask;
    		object.matrix = this.matrix.toArray();
    		if ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;
    		if ( this.isInstancedMesh ) {
    			object.type = 'InstancedMesh';
    			object.count = this.count;
    			object.instanceMatrix = this.instanceMatrix.toJSON();
    		}
    		function serialize( library, element ) {
    			if ( library[ element.uuid ] === undefined ) {
    				library[ element.uuid ] = element.toJSON( meta );
    			}
    			return element.uuid;
    		}
    		if ( this.isMesh || this.isLine || this.isPoints ) {
    			object.geometry = serialize( meta.geometries, this.geometry );
    			const parameters = this.geometry.parameters;
    			if ( parameters !== undefined && parameters.shapes !== undefined ) {
    				const shapes = parameters.shapes;
    				if ( Array.isArray( shapes ) ) {
    					for ( let i = 0, l = shapes.length; i < l; i ++ ) {
    						const shape = shapes[ i ];
    						serialize( meta.shapes, shape );
    					}
    				} else {
    					serialize( meta.shapes, shapes );
    				}
    			}
    		}
    		if ( this.material !== undefined ) {
    			if ( Array.isArray( this.material ) ) {
    				const uuids = [];
    				for ( let i = 0, l = this.material.length; i < l; i ++ ) {
    					uuids.push( serialize( meta.materials, this.material[ i ] ) );
    				}
    				object.material = uuids;
    			} else {
    				object.material = serialize( meta.materials, this.material );
    			}
    		}
    		if ( this.children.length > 0 ) {
    			object.children = [];
    			for ( let i = 0; i < this.children.length; i ++ ) {
    				object.children.push( this.children[ i ].toJSON( meta ).object );
    			}
    		}
    		if ( isRootObject ) {
    			const geometries = extractFromCache( meta.geometries );
    			const materials = extractFromCache( meta.materials );
    			const textures = extractFromCache( meta.textures );
    			const images = extractFromCache( meta.images );
    			const shapes = extractFromCache( meta.shapes );
    			if ( geometries.length > 0 ) output.geometries = geometries;
    			if ( materials.length > 0 ) output.materials = materials;
    			if ( textures.length > 0 ) output.textures = textures;
    			if ( images.length > 0 ) output.images = images;
    			if ( shapes.length > 0 ) output.shapes = shapes;
    		}
    		output.object = object;
    		return output;
    		function extractFromCache( cache ) {
    			const values = [];
    			for ( const key in cache ) {
    				const data = cache[ key ];
    				delete data.metadata;
    				values.push( data );
    			}
    			return values;
    		}
    	},
    	clone: function ( recursive ) {
    		return new this.constructor().copy( this, recursive );
    	},
    	copy: function ( source, recursive ) {
    		if ( recursive === undefined ) recursive = true;
    		this.name = source.name;
    		this.up.copy( source.up );
    		this.position.copy( source.position );
    		this.rotation.order = source.rotation.order;
    		this.quaternion.copy( source.quaternion );
    		this.scale.copy( source.scale );
    		this.matrix.copy( source.matrix );
    		this.matrixWorld.copy( source.matrixWorld );
    		this.matrixAutoUpdate = source.matrixAutoUpdate;
    		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
    		this.layers.mask = source.layers.mask;
    		this.visible = source.visible;
    		this.castShadow = source.castShadow;
    		this.receiveShadow = source.receiveShadow;
    		this.frustumCulled = source.frustumCulled;
    		this.renderOrder = source.renderOrder;
    		this.userData = JSON.parse( JSON.stringify( source.userData ) );
    		if ( recursive === true ) {
    			for ( let i = 0; i < source.children.length; i ++ ) {
    				const child = source.children[ i ];
    				this.add( child.clone() );
    			}
    		}
    		return this;
    	}
    } );

    const { checkArg, checkArgs } = util;
    class Turtle3D extends Turtle {
        static defaultVariables() {
            return {
                atEdge: 'wrap',
                hidden: false,
            }
        }
        constructor() {
            super();
            Object.assign(this, Turtle3D.defaultVariables());
        }
        agentConstructor() {
            this.obj3d = new Object3D$1();
            this.obj3d.rotation.order = 'ZYX';
            this.reset();
        }
        reset() {
            this.obj3d.position.set(0, 0, 0);
            this.obj3d.rotation.set(0, 0, 0);
            this.heading = 0;
        }
        setxyz(x, y, z) {
            checkArgs(arguments);
            super.setxy(x, y, z);
        }
        getxyz() {
            return this.obj3d.position.toArray()
        }
        setRotation(x, y, z) {
            checkArgs(arguments);
            this.obj3d.rotation.set(x, y, z);
        }
        getRotation() {
            const { x, y, z } = this.obj3d.rotation;
            return [x, y, z]
        }
        getThetaPhiPsi() {
            return this.getRotation().reverse()
        }
        getHeadingPitchRoll() {
            const [psi, phi, theta] = this.getRotation();
            const heading = radToHeading(theta);
            const pitch = radToDeg(-phi);
            const roll = radToDeg(psi);
            return [heading, pitch, roll]
        }
        getDxDyDz() {
            return [this.dx, this.dy, this.dz]
        }
        get x() {
            return this.obj3d.position.x
        }
        set x(d) {
            checkArg(d);
            this.obj3d.position.x = d;
        }
        get y() {
            return this.obj3d.position.y
        }
        set y(d) {
            checkArg(d);
            this.obj3d.position.y = d;
        }
        get z() {
            return this.obj3d.position.z
        }
        set z(d) {
            checkArg(d);
            this.obj3d.position.z = d;
        }
        get theta() {
            return this.obj3d.rotation.z
        }
        set theta(rad) {
            checkArg(rad);
            if (this.obj3d) this.obj3d.rotation.z = rad;
        }
        get heading() {
            return this.model.fromRads(this.obj3d.rotation.z)
        }
        set heading(angle) {
            checkArg(angle);
            this.obj3d.rotation.z = this.model.toRads(angle);
        }
        get pitch() {
            return -this.model.fromAngleRads(this.obj3d.rotation.y)
        }
        set pitch(angle) {
            checkArg(angle);
            this.obj3d.rotation.y = -this.model.toAngleRads(angle);
        }
        get roll() {
            return this.model.fromAngleRads(this.obj3d.rotation.x)
        }
        set roll(angle) {
            checkArg(angle);
            this.obj3d.rotation.x = this.model.toAngleRads(angle);
        }
        forward(d) {
            checkArg(d);
            const p0 = this.patch;
            this.obj3d.translateX(d);
            super.checkXYZ(p0);
        }
        right(angle) {
            this.left(-angle);
        }
        left(angle) {
            checkArg(angle);
            this.obj3d.rotateZ(this.model.toAngleRads(angle));
        }
        tiltUp(angle) {
            this.tiltDown(-angle);
        }
        tiltDown(angle) {
            checkArg(angle);
            this.obj3d.rotateY(this.model.toAngleRads(angle));
        }
        rollRight(angle) {
            checkArg(angle);
            this.obj3d.rotateX(this.model.toAngleRads(angle));
        }
        rollLeft(angle) {
            this.rollRight(-angle);
        }
        facexyz(x1, y1, z1) {
            checkArgs(arguments);
            const headingTowards = this.towardsXY(x1, y1);
            const pitchTowards = this.towardsPitchXYZ(x1, y1, z1);
            this.heading = headingTowards;
            this.pitch = pitchTowards;
        }
        face(agent) {
            checkArg(agent, 'object');
            const { x, y, z } = agent;
            this.facexyz(x, y, z);
        }
        towardsPitchXYZ(x1, y1, z1) {
            checkArgs(arguments);
            const [x, y, z] = this.getxyz();
            const [dx, dy, dz] = [x1 - x, y1 - y, z1 - z];
            const xyhypot = Math.hypot(dx, dy);
            const pitchRads = Math.atan2(dz, xyhypot);
            return this.model.fromAngleRads(pitchRads)
        }
        towardsPitch(agent) {
            checkArg(agent, 'object');
            const { x, y, z } = agent;
            this.towardsPitchXYZ(x, y, z);
        }
        distance(agent) {
            checkArg(agent, 'object');
            const { x, y, z } = agent;
            return this.distanceXYZ(x, y, z)
        }
        distanceXYZ(x1, y1, z1) {
            checkArgs(arguments);
            const { x, y, z } = this;
            return distance3(x, y, z, x1, y1, z1)
        }
        get dx() {
            const { y: pitch, z: heading } = this.obj3d.rotation;
            return Math.cos(pitch) * Math.cos(heading)
        }
        get dy() {
            const { y: pitch, z: heading } = this.obj3d.rotation;
            return Math.cos(pitch) * Math.sin(heading)
        }
        get dz() {
            const pitch = this.obj3d.rotation.y;
            return Math.sin(pitch)
        }
    }

    class Model3D extends Model {
        initAgentSet(name, AgentsetClass, AgentClass) {
            if (name === 'turtles') AgentClass = Turtle3D;
            super.initAgentSet(name, AgentsetClass, AgentClass);
        }
    }

    const Color$1 = {
        rgbaCssColor(r, g, b, a = 255) {
            a = a / 255;
            const a2 = a.toPrecision(2);
            return a === 1 ? `rgb(${r},${g},${b})` : `rgba(${r},${g},${b},${a2})`
        },
        hslCssColor(h, s = 100, l = 50, a = 255) {
            a = a / 255;
            const a4 = a.toPrecision(4);
            return a === 1
                ? `hsl(${h},${s}%,${l}%)`
                : `hsla(${h},${s}%,${l}%,${a4})`
        },
        hexCssColor(r, g, b) {
            return `#${(0x1000000 | (b | (g << 8) | (r << 16)))
            .toString(16)
            .slice(-6)}`
        },
        cssColor(r, g, b, a = 255) {
            return a === 255
                ? this.hexCssColor(r, g, b)
                : this.rgbaCssColor(r, g, b, a)
        },
        randomCssColor() {
            const r255 = () => randomInt(256);
            return this.cssColor(r255(), r255(), r255())
        },
        randomGrayCssColor(min = 0, max = 255) {
            const gray = randomInt2(min, max);
            return this.cssColor(gray, gray, gray)
        },
        cssToPixel(string) {
            const rgba = this.cssToUint8Array(string);
            return this.rgbaToPixel(...rgba)
        },
        rgbaToPixel(r, g, b, a = 255) {
            const rgba = new Uint8Array([r, g, b, a]);
            const pixels = new Uint32Array(rgba.buffer);
            return pixels[0]
        },
        randomPixel() {
            const r255 = () => randomInt(256);
            return this.rgbaToPixel(r255(), r255(), r255())
        },
        randomGrayPixel(min = 0, max = 255) {
            const gray = randomInt2(min, max);
            return this.rgbaToPixel(gray, gray, gray)
        },
        sharedCtx1x1: createCtx(1, 1, false, { willReadFrequently: true }),
        cssToUint8Array(string) {
            this.sharedCtx1x1.clearRect(0, 0, 1, 1);
            this.sharedCtx1x1.fillStyle = string;
            this.sharedCtx1x1.fillRect(0, 0, 1, 1);
            return this.sharedCtx1x1.getImageData(0, 0, 1, 1).data
        },
        typedColor(r, g, b, a = 255) {
            if (g === undefined) return this.toTypedColor(r)
            const u8array = new Uint8ClampedArray([r, g, b, a]);
            u8array.pixelArray = new Uint32Array(u8array.buffer);
            Object.setPrototypeOf(u8array, TypedColorProto);
            return u8array
        },
        isTypedColor(any) {
            return any && any.constructor === Uint8ClampedArray && any.pixelArray
        },
        toTypedColor(value, colorType) {
            if (this.isTypedColor(value)) return value
            const tc = this.typedColor(0, 0, 0, 0);
            if (colorType == null) {
                if (isString(value)) tc.css = value;
                else if (isNumber$1(value)) tc.pixel = value;
                else if (isArray(value)) tc.rgb = value;
                else if (isTypedArray(value)) tc.rgb = value;
                else throw Error(`toTypedColor: illegal value ${value}`)
            } else {
                tc[colorType] = value;
            }
            return tc
        },
        randomTypedColor() {
            const r255 = () => randomInt(256);
            return this.typedColor(r255(), r255(), r255())
        },
        randomGrayTypedColor(min = 0, max = 255) {
            const gray = randomInt2(min, max);
            return this.typedColor(gray, gray, gray)
        },
        randomColorArray(length) {
            const colors = new Array(length);
            forLoop(colors, (c, i) => (colors[i] = this.randomTypedColor()));
            return colors
        },
        randomGrayArray(length, min = 0, max = 255) {
            const grays = new Array(length);
            forLoop(
                grays,
                (g, i) => (grays[i] = this.randomGrayTypedColor(min, max))
            );
            return grays
        },
    };
    const TypedColorProto = {
        __proto__: Uint8ClampedArray.prototype,
        setColor(r, g, b, a = 255) {
            this.checkColorChange();
            this[0] = r;
            this[1] = g;
            this[2] = b;
            this[3] = a;
        },
        set rgb(rgbaArray) {
            this.setColor(...rgbaArray);
        },
        get rgb() {
            return this
        },
        setAlpha(alpha) {
            this.checkColorChange();
            this[3] = alpha;
        },
        getAlpha() {
            return this[3]
        },
        get alpha() {
            return this.getAlpha()
        },
        set alpha(alpha) {
            this.setAlpha(alpha);
        },
        setPixel(pixel) {
            this.checkColorChange();
            this.pixelArray[0] = pixel;
        },
        getPixel() {
            return this.pixelArray[0]
        },
        get pixel() {
            return this.getPixel()
        },
        set pixel(pixel) {
            this.setPixel(pixel);
        },
        setCss(string) {
            return this.setColor(...Color$1.cssToUint8Array(string))
        },
        getCss() {
            if (this.string == null) this.string = Color$1.cssColor(...this);
            return this.string
        },
        get css() {
            return this.getCss()
        },
        set css(string) {
            this.setCss(string);
        },
        setWebgl(array) {
            if (array.length !== 3)
                throw Error(
                    'setWebgl array length must be 3, length:',
                    array.length
                )
            this.setColor(
                array[0] * 255,
                array[1] * 255,
                array[2] * 255
            );
        },
        getWebgl() {
            return [this[0] / 255, this[1] / 255, this[2] / 255]
        },
        get webgl() {
            return this.getWebgl()
        },
        set webgl(array) {
            this.setWebgl(array);
        },
        checkColorChange() {
            this.string = null;
        },
        equals(color) {
            return this.getPixel() === color.getPixel()
        },
        toString() {
            return `[${Array.from(this).toString()}]`
        },
        rgbDistance(r, g, b) {
            const [r1, g1, b1] = this;
            const rMean = Math.round((r1 + r) / 2);
            const [dr, dg, db] = [r1 - r, g1 - g, b1 - b];
            const [dr2, dg2, db2] = [dr * dr, dg * dg, db * db];
            const distanceSq =
                (((512 + rMean) * dr2) >> 8) +
                4 * dg2 +
                (((767 - rMean) * db2) >> 8);
            return distanceSq
        },
    };

    function getPixel(color) {
        if (typeof color === 'number') return color
        if (color.pixel) return color.pixel
        if (color === 'transparent') return 0
        return Color$1.toTypedColor(color).pixel
    }
    class PatchesView {
        constructor(width, height) {
            this.ctx = createCtx(width, height);
            this.resetImageData();
            this.useImageSmoothing = false;
        }
        resetImageData() {
            this.imageData = ctxImageData(this.ctx);
            this.pixels = new Uint32Array(this.imageData.data.buffer);
        }
        setPatchesSmoothing(smoothting) {
            this.useImageSmoothing = smoothting;
        }
        setPixels(data, pixelFcn = d => d) {
            if (isOofA(data)) data = toAofO(data);
            if (data.length !== this.pixels.length) {
                throw Error(
                    'setPixels, data.length != pixels.length ' +
                        data.length +
                        ' ' +
                        this.pixels.length
                )
            }
            forLoop(data, (d, i) => {
                this.pixels[i] = getPixel(pixelFcn(d));
            });
        }
        createPixels(pixelFcn) {
            repeat(this.pixels.length, i => {
                this.pixels[i] = getPixel(pixelFcn(i));
            });
        }
        setPixel(index, pixel) {
            this.pixels[index] = getPixel(pixel);
        }
        draw(ctx) {
            const smoothing = this.ctx.imageSmoothingEnabled;
            ctx.imageSmoothingEnabled = this.useImageSmoothing;
            this.ctx.putImageData(this.imageData, 0, 0);
            fillCtxWithImage(ctx, this.ctx.canvas);
            ctx.imageSmoothingEnabled = smoothing;
        }
        clear(color) {
            color = color.css || color;
            if (!color || typeof color === 'string') {
                clearCtx(this.ctx, color);
            } else if (typeof color === 'number') {
                this.createPixels(() => color);
            } else {
                throw Error('patchesView.clear(): illegal color ' + color)
            }
            if (typeof color === 'number') {
                this.updateCanvas();
            } else {
                this.resetImageData();
            }
        }
        getImageBitmap(options = {}) {
            return createImageBitmap(this.imageData, options)
        }
        drawImageBitmap(ctx, options = {}) {
            createImageBitmap(this.imageData, options).then(img =>
                fillCtxWithImage(ctx, img)
            );
        }
        updateCanvas() {
            this.ctx.putImageData(this.imageData, 0, 0);
            return this.ctx.canvas
        }
    }

    class RGBDataSet extends DataSet {
        static rgbToInt24(r, g, b) {
            return r * 256 * 256 + g * 256 + b
        }
        static rgbScaleFunction(min, scale) {
            return (r, g, b) => min + (r * 256 * 256 + g * 256 + b) * scale
        }
        constructor(
            img,
            rgbToData = RGBDataSet.rgbToInt24,
            ArrayType = Float32Array
        ) {
            super(img.width, img.height, new ArrayType(img.width * img.height));
            if (Array.isArray(rgbToData))
                rgbToData = RGBDataSet.newRgbDataFunction(rgbToData);
            const ctx = imageToCtx(img);
            const imgData = ctxImageData(ctx);
            const convertedData = this.data;
            for (var i = 0; i < convertedData.length; i++) {
                const r = imgData.data[4 * i];
                const g = imgData.data[4 * i + 1];
                const b = imgData.data[4 * i + 2];
                convertedData[i] = rgbToData(r, g, b);
            }
        }
    }

    class RGBADataSet extends DataSet {
        constructor(img, Type = Float32Array, options = {}) {
            const bytes = imageToBytes(img);
            const data = new Type(bytes.buffer);
            const dataPerPixel = (4 * data.length) / bytes.length;
            const width = dataPerPixel * img.width;
            const height = img.height;
            super(width, height, data);
            Object.assign(this, options);
            this.src = img.src;
        }
    }
    let imageToBytesCtx = null;
    function imageToBytes(img, flipY = false, imgFormat = 'RGBA') {
        if (!imageToBytesCtx) {
            const can = createCanvas(0, 0);
            imageToBytesCtx = can.getContext('webgl', {
                premultipliedAlpha: false,
            });
        }
        const { width, height } = img;
        const gl = imageToBytesCtx;
        Object.assign(gl.canvas, { width, height });
        const fmt = gl[imgFormat];
        const texture = gl.createTexture();
        gl.bindTexture(gl.TEXTURE_2D, texture);
        if (flipY) {
            gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
        }
        gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE);
        gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false);
        gl.texImage2D(gl.TEXTURE_2D, 0, fmt, fmt, gl.UNSIGNED_BYTE, img);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
        const framebuffer = gl.createFramebuffer();
        gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
        gl.framebufferTexture2D(
            gl.FRAMEBUFFER,
            gl.COLOR_ATTACHMENT0,
            gl.TEXTURE_2D,
            texture,
            0
        );
        const status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
        if (status !== gl.FRAMEBUFFER_COMPLETE) {
            throw Error(`imageToBytes: status not FRAMEBUFFER_COMPLETE: ${status}`)
        }
        const pixSize = imgFormat === 'RGB' ? 3 : 4;
        const pixels = new Uint8Array(pixSize * width * height);
        gl.readPixels(0, 0, width, height, fmt, gl.UNSIGNED_BYTE, pixels);
        gl.bindFramebuffer(gl.FRAMEBUFFER, null);
        return pixels
    }

    var RGBADataSet$1 = /*#__PURE__*/Object.freeze({
        __proto__: null,
        imageToBytes: imageToBytes,
        default: RGBADataSet
    });

    function rgbToInt24(r, g, b) {
        return r * 256 * 256 + g * 256 + b
    }
    function rgbScaleFunction(min, scale) {
        return (r, g, b) => min + rgbToInt24(r, g, b) * scale
    }
    function redfishElevation(r, g, b) {
        let negative = 1;
        if (r > 63) {
            negative = -1;
            r = 0;
        }
        return (negative * rgbToInt24(r, g, b)) / 10
    }
    const sharedTileObject = {
        zxyToTile: async function (z, x, y) {
            const tileUrl = this.zxyUrl(z, x, y);
            const img = await imagePromise(tileUrl);
            img.zxy = [z, x, y];
            return img
        },
        zxyToDataSet: async function (z, x, y, ArrayType = Float32Array) {
            const img = await this.zxyToTile(z, x, y);
            const dataSet = this.tileDataSet(img, ArrayType);
            dataSet.zxy = [z, x, y];
            return dataSet
        },
        tileDataSet: function (img, ArrayType = Float32Array) {
            const tileDecoder = this.elevationFcn;
            return new RGBDataSet(img, tileDecoder, ArrayType)
        },
        tileSize: 256,
    };
    const maptiler = Object.assign(
        {
            elevationFcn: rgbScaleFunction(-10000, 0.1),
            zxyUrl: (z, x, y) =>
                `https://api.maptiler.com/tiles/terrain-rgb/${z}/${x}/${y}.png?key=iQurAP6lArV1UP4gfSVs`,
            zxyTemplate:
                'https://api.maptiler.com/tiles/terrain-rgb/{z}/{x}/{y}.png?key=iQurAP6lArV1UP4gfSVs',
            minZoom: 0,
            maxZoom: 15,
        },
        sharedTileObject
    );
    const mapzen = Object.assign(
        {
            elevationFcn: rgbScaleFunction(-32768, 1 / 256),
            zxyUrl: (z, x, y) =>
                `https://s3.amazonaws.com/elevation-tiles-prod/terrarium/${z}/${x}/${y}.png`,
            zxyTemplate:
                'https://s3.amazonaws.com/elevation-tiles-prod/terrarium/{z}/{x}/{y}.png',
            minZoom: 0,
            maxZoom: 15,
        },
        sharedTileObject
    );
    const redfishUSA = Object.assign(
        {
            elevationFcn: redfishElevation,
            zxyUrl: (z, x, y) =>
                `https://s3-us-west-2.amazonaws.com/simtable-elevation-tiles/${z}/${x}/${y}.png`,
            zxyTemplate:
                'https://s3-us-west-2.amazonaws.com/simtable-elevation-tiles/{z}/{x}/{y}.png',
            minZoom: 10,
            maxZoom: 14,
        },
        sharedTileObject
    );
    const redfishWorld = Object.assign(
        {
            elevationFcn: redfishElevation,
            zxyUrl: (z, x, y) =>
                `https://s3-us-west-2.amazonaws.com/world-elevation-tiles/DEM_tiles/${z}/${x}/${y}.png`,
            zxyTemplate:
                'https://s3-us-west-2.amazonaws.com/world-elevation-tiles/DEM_tiles/{z}/{x}/{y}.png',
            minZoom: 7,
            maxZoom: 13,
        },
        sharedTileObject
    );
    const mapboxToken =
        'pk.eyJ1IjoiYmFja3NwYWNlcyIsImEiOiJjanVrbzI4dncwOXl3M3ptcGJtN3oxMmhoIn0.x9iSCrtm0iADEqixVgPwqQ';
    const mapbox = Object.assign(
        {
            elevationFcn: rgbScaleFunction(-10000, 0.1),
            zxyUrl: (z, x, y) =>
                `https://api.mapbox.com/v4/mapbox.terrain-rgb/${z}/${x}/${y}.png?access_token=` +
                mapboxToken,
            zxyTemplate:
                'https://api.mapbox.com/v4/mapbox.terrain-rgb/{z}/{x}/{y}.png?access_token=' +
                mapboxToken,
            minZoom: 0,
            maxZoom: 18,
        },
        sharedTileObject
    );

    var TileData = /*#__PURE__*/Object.freeze({
        __proto__: null,
        maptiler: maptiler,
        mapzen: mapzen,
        redfishUSA: redfishUSA,
        redfishWorld: redfishWorld,
        mapbox: mapbox
    });

    const ColorMap = {
        gradientImageData(nColors, stops, locs) {
            const ctx = createCtx(nColors, 1);
            if (!locs) locs = floatRamp(0, 1, stops.length);
            const grad = ctx.createLinearGradient(0, 0, nColors, 0);
            repeat(stops.length, i => grad.addColorStop(locs[i], stops[i]));
            ctx.fillStyle = grad;
            ctx.fillRect(0, 0, nColors, 1);
            return ctxImageColors(ctx)
        },
        arrayToTypedColors(array) {
            return array.map(a => Color$1.toTypedColor(a))
        },
        permuteArrays(A1, A2 = A1, A3 = A1) {
            const array = [];
            for (const a3 of A3) {
                for (const a2 of A2) for (const a1 of A1) array.push([a1, a2, a3]);
            }
            return array
        },
        permuteRGBColors(numRs, numGs = numRs, numBs = numRs) {
            const toRamp = num => integerRamp(0, 255, num);
            const ramps = [numRs, numGs, numBs].map(toRamp);
            return this.permuteArrays(...ramps)
        },
        ColorMapProto: {
            __proto__: Array.prototype,
            createIndex() {
                this.index = [];
                repeat(this.length, i => {
                    const px = this[i].getPixel();
                    this.index[px] = i;
                    if (this.cssNames) this.index[this.cssNames[i]] = i;
                });
            },
            randomColor() {
                return this[randomInt(this.length)]
            },
            setAlpha(alpha) {
                forLoop(this, color => color.setAlpha(alpha));
            },
            clone() {
                return this.cloneColorMap(this)
            },
            atIndex(index) {
                return this[index % this.length]
            },
            indexOf(color) {
                if (this.index) return this.index[color.getPixel()]
                for (let i = 0; i < this.length; i++) {
                    if (color.equals(this[i])) return i
                }
                return undefined
            },
            scaleColor(number, min = 0, max = this.length - 1) {
                if (min === max) return this[min]
                const scale = lerpScale(number, min, max);
                const index = Math.round(lerp(0, this.length - 1, scale));
                return this[index]
            },
            toString() {
                return `${this.length} ${arraysToString(this)}`
            },
            rgbClosestIndex(r, g, b) {
                let minDist = Infinity;
                let ixMin = 0;
                for (var i = 0; i < this.length; i++) {
                    const d = this[i].rgbDistance(r, g, b);
                    if (d < minDist) {
                        minDist = d;
                        ixMin = i;
                        if (d === 0) return ixMin
                    }
                }
                return ixMin
            },
            rgbClosestColor(r, g, b) {
                return this[this.rgbClosestIndex(r, g, b)]
            },
            cubeClosestIndex(r, g, b) {
                const cube = this.cube;
                if (!cube) throw Error('cubeClosestIndex: requires the cube arrays')
                const rgbSteps = cube.map(c => 255 / (c - 1));
                const rgbLocs = [r, g, b].map((c, i) => Math.round(c / rgbSteps[i]));
                const [rLoc, gLoc, bLoc] = rgbLocs;
                return rLoc + gLoc * cube[0] + bLoc * cube[0] * cube[1]
            },
            cubeClosestColor(r, g, b) {
                return this[this.cubeClosestIndex(r, g, b)]
            },
            closestIndex(r, g, b) {
                return this.cube
                    ? this.cubeClosestIndex(r, g, b)
                    : this.rgbClosestIndex(r, g, b)
            },
            closestColor(r, g, b) {
                return this[this.closestIndex(r, g, b)]
            },
        },
        basicColorMap(colors) {
            colors = this.arrayToTypedColors(colors);
            Object.setPrototypeOf(colors, this.ColorMapProto);
            return colors
        },
        grayColorMap(min = 0, max = 255, size = max - min + 1) {
            const ramp = integerRamp(min, max, size);
            return this.basicColorMap(ramp.map(i => [i, i, i]))
        },
        rgbColorCube(numRs, numGs = numRs, numBs = numRs) {
            const array = this.permuteRGBColors(numRs, numGs, numBs);
            const map = this.basicColorMap(array);
            map.cube = [numRs, numGs, numBs];
            return map
        },
        rgbColorMap(R, G, B) {
            const array = this.permuteArrays(R, G, B);
            return this.basicColorMap(array)
        },
        hslColorMap(num = 360, S = 100, L = 50) {
            const hues = integerRamp(1, 360, num);
            const colors = hues.map(h => Color$1.hslCssColor(h));
            const typedColors = colors.map(c => Color$1.toTypedColor(c));
            return this.basicColorMap(typedColors)
        },
        transparentColorMap(num = 1) {
            return this.staticColorMap(0, num)
        },
        staticColorMap(color, num = 1) {
            color = Color$1.toTypedColor(color);
            const array = Array(num).fill(color);
            return this.basicColorMap(array)
        },
        gradientColorMap(nColors, stops, locs) {
            stops = stops.map(c => c.css || c);
            const uint8arrays = this.gradientImageData(nColors, stops, locs);
            const typedColors = this.arrayToTypedColors(uint8arrays);
            Object.setPrototypeOf(typedColors, this.ColorMapProto);
            return typedColors
        },
        jetColors: [
            'rgb(0, 0, 127)',
            'rgb(0, 0, 255)',
            'rgb(0, 127, 255)',
            'rgb(0, 255, 255)',
            'rgb(127, 255, 127)',
            'rgb(255, 255, 0)',
            'rgb(255, 127, 0)',
            'rgb(255, 0, 0)',
            'rgb(127, 0, 0)',
        ],
        basicColorNames:
            'white silver gray black red maroon yellow orange olive lime green cyan teal blue navy magenta purple'.split(
                ' '
            ),
        brightColorNames:
            'white silver red maroon yellow orange olive lime green cyan teal blue navy magenta purple'.split(
                ' '
            ),
        cssColorMap(cssArray, createNameIndex = false) {
            const array = cssArray.map(str => Color$1.cssToUint8Array(str));
            const map = this.basicColorMap(array);
            map.cssNames = cssArray;
            if (createNameIndex) {
                cssArray.forEach((name, ix) => {
                    map[name] = map[ix];
                });
                if (map.cyan) map.aqua = map.cyan;
                if (map.magenta) map.fuchsia = map.magenta;
            }
            return map
        },
        cloneColorMap(colorMap) {
            const keys = Object.keys(colorMap);
            const clone = this.basicColorMap(colorMap);
            forLoop(keys, (val, i) => {
                if (clone[i] === undefined) clone[val] = colorMap[val];
            });
            return clone
        },
        LazyMap(name, map) {
            Object.defineProperty(this, name, { value: map, enumerable: true });
            return map
        },
        get Gray() {
            return this.LazyMap('Gray', this.grayColorMap())
        },
        get Hue() {
            return this.LazyMap('Hue', this.hslColorMap())
        },
        get LightGray() {
            return this.LazyMap('LightGray', this.grayColorMap(200))
        },
        get DarkGray() {
            return this.LazyMap('DarkGray', this.grayColorMap(0, 100))
        },
        get Jet() {
            return this.LazyMap('Jet', this.gradientColorMap(256, this.jetColors))
        },
        get Rgb256() {
            return this.LazyMap('Rgb256', this.rgbColorCube(8, 8, 4))
        },
        get Rgb() {
            return this.LazyMap('Rgb', this.rgbColorCube(16))
        },
        get Transparent() {
            return this.LazyMap('Transparent', this.transparentColorMap())
        },
        get Basic16() {
            return this.LazyMap(
                'Basic16',
                this.cssColorMap(this.basicColorNames, true)
            )
        },
    };

    function cssColor$1(color) {
        if (color) return color.css || color
        return color
    }
    class Shapes {
        constructor() {
            this.cache = {};
            this.paths = paths;
        }
        addPath(name, pathFunction) {
            if (this.getPath(name)) ;
            paths[name] = pathFunction;
        }
        needsStrokeColor(shapeName) {
            return shapeName.endsWith('2')
        }
        getPathNames() {
            return Object.keys(paths)
        }
        getPath(name) {
            return paths[name]
        }
        oneOf() {
            return oneValOf(paths)
        }
        nameAtIndex(index) {
            const names = this.getPathNames();
            return names[mod(index, names.length)]
        }
        atIndex(index) {
            const name = this.nameAtIndex(index);
            return paths[name]
        }
        imagePathPromise(name, imgURL) {
            return imagePromise(imgURL).then(img => {
                this.createImagePath(name, img);
            })
        }
        createImagePath(name, img, flip = true) {
            if (!isImageable(img)) {
                throw Error('Shapes createImagePath: img not an imageable ' + img)
            }
            if (flip) img = flipImage(img);
            function imagePath(ctx) {
                ctx.drawImage(img, -0.5, -0.5, 1, 1);
            }
            this.addPath(name, imagePath);
        }
        imageName(name, pixels, fill, stroke) {
            const path = this.getPath(name);
            if (!Number.isInteger(pixels))
                throw Error(`imageName: pixels is not integer: ${name}`)
            if (!path) throw Error(`imageName: ${name} not in Shapes`)
            if (path.name === 'imagePath') return `${name}_${pixels}_image`
            if (!fill) throw Error(`imageName: No color for shape ${name}`)
            if (!this.needsStrokeColor(name)) stroke = null;
            return `${name}_${pixels}_${fill}${stroke ? `_${stroke}` : ''}`
        }
        shapeToImage(name, pixels, fill, stroke) {
            pixels = Math.ceil(pixels);
            const imgName = this.imageName(name, pixels, fill, stroke);
            if (this.cache && this.cache[imgName]) return this.cache[imgName]
            const ctx = createCtx(pixels, pixels);
            ctx.fillStyle = cssColor$1(fill);
            ctx.strokeStyle = cssColor$1(stroke);
            ctx.scale(pixels, -pixels);
            ctx.translate(0.5, -0.5);
            ctx.beginPath();
            paths[name](ctx);
            ctx.closePath();
            ctx.fill();
            ctx.canvas.name = imgName;
            if (this.cache) this.cache[imgName] = ctx.canvas;
            return ctx.canvas
        }
        imageNameToImage(imageName) {
            const [name, pixels, fill, stroke] = imageName.split('_');
            return this.shapeToImage(name, pixels, fill, stroke)
        }
    }
    function flipImage(img) {
        const { width, height } = img;
        const ctx = createCtx(width, height);
        ctx.scale(1, -1);
        ctx.drawImage(img, 0, -height);
        return ctx.canvas
    }
    function poly(ctx, points) {
        points.forEach((pt, i) => {
            if (i === 0) ctx.moveTo(pt[0], pt[1]);
            else ctx.lineTo(pt[0], pt[1]);
        });
    }
    function circle(ctx, x, y, radius, anticlockwise = false) {
        ctx.arc(x, y, radius, 0, 2 * Math.PI, anticlockwise);
    }
    function square(ctx, x, y, size) {
        ctx.fillRect(x - size / 2, y - size / 2, size, size);
    }
    const paths = {
        arrow(ctx) {
            poly(ctx, [
                [0.5, 0],
                [0, 0.5],
                [0, 0.2],
                [-0.5, 0.2],
                [-0.5, -0.2],
                [0, -0.2],
                [0, -0.5],
            ]);
        },
        bug(ctx) {
            ctx.strokeStyle = ctx.fillStyle;
            this.bug2(ctx);
        },
        bug2(ctx) {
            ctx.lineWidth = 0.05;
            poly(ctx, [
                [0.4, 0.225],
                [0.2, 0],
                [0.4, -0.225],
            ]);
            ctx.stroke();
            ctx.beginPath();
            circle(ctx, 0.12, 0, 0.13);
            circle(ctx, -0.05, 0, 0.13);
            circle(ctx, -0.27, 0, 0.2);
        },
        circle(ctx) {
            circle(ctx, 0, 0, 0.5);
        },
        dart(ctx) {
            poly(ctx, [
                [0.5, 0],
                [-0.5, 0.4],
                [-0.25, 0],
                [-0.5, -0.4],
            ]);
        },
        frame(ctx) {
            const inset = 0.2;
            const r = 0.5 - inset;
            poly(ctx, [
                [-0.5, -0.5],
                [0.5, -0.5],
                [0.5, 0.5],
                [-0.5, 0.5],
            ]);
            ctx.closePath();
            poly(ctx, [
                [-r, -r],
                [-r, r],
                [r, r],
                [r, -r],
            ]);
        },
        frame2(ctx) {
            const inset = 0.2;
            square(ctx, 0, 0, 1);
            ctx.fillStyle = ctx.strokeStyle;
            square(ctx, 0, 0, 1 - 2 * inset);
        },
        person(ctx) {
            ctx.strokeStyle = ctx.fillStyle;
            this.person2(ctx);
        },
        person2(ctx) {
            poly(ctx, [
                [0.15, 0.2],
                [0.3, 0],
                [0.125, -0.1],
                [0.125, 0.05],
                [0.1, -0.15],
                [0.25, -0.5],
                [0.05, -0.5],
                [0, -0.25],
                [-0.05, -0.5],
                [-0.25, -0.5],
                [-0.1, -0.15],
                [-0.125, 0.05],
                [-0.125, -0.1],
                [-0.3, 0],
                [-0.15, 0.2],
            ]);
            ctx.closePath();
            ctx.fill();
            ctx.beginPath();
            ctx.fillStyle = ctx.strokeStyle;
            circle(ctx, 0, 0.35, 0.15);
        },
        ring(ctx) {
            const [rOuter, rInner] = [0.5, 0.3];
            circle(ctx, 0, 0, rOuter);
            ctx.lineTo(rInner, 0);
            circle(ctx, 0, 0, rInner, true);
        },
        ring2(ctx) {
            const [rOuter, rInner] = [0.5, 0.3];
            circle(ctx, 0, 0, rOuter);
            ctx.closePath();
            ctx.fill();
            ctx.beginPath();
            ctx.fillStyle = ctx.strokeStyle;
            circle(ctx, 0, 0, rInner);
        },
        square(ctx) {
            square(ctx, 0, 0, 1);
        },
        triangle(ctx) {
            poly(ctx, [
                [0.5, 0],
                [-0.5, -0.4],
                [-0.5, 0.4],
            ]);
        },
    };

    class SpriteSheet {
        constructor(spriteSize = 64, cols = 16, usePowerOf2 = false) {
            spriteSize = Math.ceil(spriteSize);
            Object.assign(this, { spriteSize, cols, usePowerOf2 });
            this.rows = 1;
            this.nextCol = 0;
            this.nextRow = 0;
            this.spritesIndex = {};
            this.sprites = [];
            this.shapes = new Shapes();
            if (usePowerOf2) this.checkPowerOf2();
            this.ctx = createCtx(this.width, this.height);
            this.texture = null;
        }
        getSprite(shapeName, color, strokeColor) {
            return this.newSprite(shapeName, color, strokeColor)
        }
        oneOf() {
            return oneOf(this.sprites)
        }
        draw(ctx, sprite, x, y, theta, world, patchSize, noRotate = false) {
            const [x0, y0] = world.patchXYtoPixelXY(x, y, patchSize);
            const theta0 = -theta;
            this.drawCanvas(ctx, sprite, x0, y0, theta0, noRotate);
        }
        drawCanvas(ctx, sprite, x, y, theta = 0, noRotate = false) {
            const { x: x0, y: y0, size } = sprite;
            const halfSize = size / 2;
            if (noRotate) theta = 0;
            if (theta === 0) {
                ctx.drawImage(
                    this.ctx.canvas,
                    x0,
                    y0,
                    size,
                    size,
                    x - halfSize,
                    y - halfSize,
                    size,
                    size
                );
            } else {
                ctx.save();
                ctx.translate(x, y);
                ctx.rotate(theta);
                ctx.drawImage(
                    this.ctx.canvas,
                    x0,
                    y0,
                    size,
                    size,
                    -halfSize,
                    -halfSize,
                    size,
                    size
                );
                ctx.restore();
            }
        }
        newSprite(shapeName, color, strokeColor = null) {
            const name = this.shapes.imageName(
                shapeName,
                this.spriteSize,
                color,
                strokeColor
            );
            if (this.spritesIndex[name]) return this.spritesIndex[name]
            const img = this.shapes.shapeToImage(
                shapeName,
                this.spriteSize,
                color,
                strokeColor
            );
            this.checkSheetSize();
            const [x, y, size] = [this.nextX, this.nextY, this.spriteSize];
            this.ctx.drawImage(img, x, y, size, size);
            const { nextRow: row, nextCol: col } = this;
            const sprite = {
                name,
                id: this.sprites.length,
                x,
                y,
                row,
                col,
                size,
                sheet: this,
            };
            sprite.uvs = this.getUVs(sprite);
            this.incrementRowCol();
            this.spritesIndex[name] = sprite;
            this.sprites.push(sprite);
            if (this.texture) this.texture.needsUpdate = true;
            return sprite
        }
        get width() {
            return this.spriteSize * this.cols
        }
        get height() {
            return this.spriteSize * this.rows
        }
        get nextX() {
            return this.spriteSize * this.nextCol
        }
        get nextY() {
            return this.spriteSize * this.nextRow
        }
        checkPowerOf2() {
            const { width, height } = this;
            if (!(isPowerOf2(width) && isPowerOf2(height))) {
                throw Error(`SpriteSheet non power of 2: ${width}x${height}`)
            }
        }
        checkSheetSize() {
            if (this.nextRow === this.rows) {
                this.rows = this.usePowerOf2 ? this.rows * 2 : this.rows + 1;
                resizeCtx(this.ctx, this.width, this.height);
                forLoop(this.sprites, sprite => {
                    sprite.uvs = this.getUVs(sprite);
                });
            }
        }
        incrementRowCol() {
            this.nextCol += 1;
            if (this.nextCol < this.cols) return
            this.nextCol = 0;
            this.nextRow += 1;
        }
        getUVs(sprite) {
            const { row, col } = sprite;
            const { rows, cols } = this;
            const u0 = col / cols;
            const v0 = (rows - (row + 1)) / rows;
            const u1 = (col + 1) / cols;
            const v1 = (rows - row) / rows;
            return [u0, v0, u1, v0, u1, v1, u0, v1]
        }
    }

    function cssColor(color) {
        if (color) return color.css || color
        return color
    }
    class TurtlesView {
        static defaultOptions() {
            return {
                useSprites: false,
                patchSize: 10,
            }
        }
        constructor(ctx, world, options = {}) {
            options = Object.assign(TurtlesView.defaultOptions(), options);
            Object.assign(this, { ctx, world }, options);
            this.shapes = new Shapes();
            this.reset(this.patchSize, this.useSprites);
        }
        reset(patchSize, useSprites = this.useSprites) {
            this.useSprites = useSprites;
            this.resetCtx(patchSize);
        }
        getImageBitmap() {
            return createImageBitmap(this.ctx.canvas)
        }
        resetCtx(patchSize) {
            this.patchSize = patchSize;
            if (this.useSprites) {
                this.world.setCanvasSize(this.ctx.canvas, patchSize);
                this.ctx.restore();
            } else {
                this.world.setEuclideanTransform(this.ctx, patchSize);
            }
        }
        drawTurtles(data, viewFcn) {
            if (isOofA(data)) data = toAofO(data);
            const constantView = isObject$1(viewFcn);
            forLoop(data, (turtle, i) => {
                const viewData = constantView ? viewFcn : viewFcn(turtle, i, data);
                this.drawTurtle(turtle, viewData);
            });
        }
        drawTurtle(turtle, viewData) {
            if (turtle.hidden) return
            if (viewData.size === 0) return
            if (this.useSprites) {
                let { sprite, noRotate } = viewData;
                if (!sprite) {
                    const { shape, color, strokeColor, size } = viewData;
                    const pixels = size * this.patchSize;
                    sprite = this.shapes.shapeToImage(
                        shape,
                        pixels,
                        color,
                        strokeColor
                    );
                }
                if (sprite.sheet) {
                    sprite.sheet.draw(
                        this.ctx,
                        sprite,
                        turtle.x,
                        turtle.y,
                        turtle.theta,
                        this.world,
                        this.patchSize,
                        noRotate
                    );
                } else {
                    this.drawImage(
                        sprite,
                        turtle.x,
                        turtle.y,
                        noRotate ? 0 : turtle.theta
                    );
                }
            } else {
                const { shape, color, strokeColor, size, noRotate } = viewData;
                this.drawShape(
                    shape,
                    turtle.x,
                    turtle.y,
                    noRotate ? 0 : turtle.theta,
                    size,
                    color,
                    strokeColor
                );
            }
        }
        drawShape(name, x, y, theta = 0, size = 1, fill, stroke) {
            const ctx = this.ctx;
            ctx.save();
            ctx.fillStyle = cssColor(fill);
            ctx.strokeStyle = cssColor(stroke);
            ctx.translate(x, y);
            ctx.scale(size, size);
            if (theta !== 0) ctx.rotate(theta);
            ctx.beginPath();
            this.shapes.paths[name](ctx);
            ctx.closePath();
            ctx.fill();
            ctx.restore();
        }
        drawImage(img, x, y, theta = 0) {
            const halfPix = img.width / 2;
            const patchSize = this.patchSize;
            const [x0, y0] = this.world.patchXYtoPixelXY(x, y, patchSize);
            const ctx = this.ctx;
            if (theta === 0) {
                ctx.drawImage(img, x0 - halfPix, y0 - halfPix);
            } else {
                ctx.save();
                ctx.translate(x0, y0);
                ctx.rotate(-theta);
                ctx.drawImage(img, -halfPix, -halfPix);
                ctx.restore();
            }
        }
        drawLinks(data, viewFcn) {
            if (isOofA(data)) data = toAofO(data);
            const uniformLinks = isObject$1(viewFcn);
            const ctx = this.ctx;
            setIdentity(this.ctx);
            if (uniformLinks) {
                ctx.strokeStyle = cssColor(viewFcn.color);
                ctx.lineWidth = viewFcn.width || 1;
                ctx.beginPath();
            }
            forLoop(data, (link, i) => {
                if (uniformLinks) {
                    this.drawLink(link);
                } else {
                    const { color, width } = viewFcn(link, i, data);
                    this.drawLink(link, color, width);
                }
            });
            if (uniformLinks) {
                ctx.closePath();
                ctx.stroke();
            }
            this.ctx.restore();
        }
        drawLink(link, color, width = 1) {
            this.drawLine(link.x0, link.y0, link.x1, link.y1, color, width);
        }
        drawLine(x0, y0, x1, y1, stroke, width = 1) {
            const ctx = this.ctx
            ;[x0, y0] = this.world.patchXYtoPixelXY(x0, y0, this.patchSize)
            ;[x1, y1] = this.world.patchXYtoPixelXY(x1, y1, this.patchSize);
            if (stroke) {
                ctx.strokeStyle = cssColor(stroke);
                ctx.lineWidth = width;
                ctx.beginPath();
            }
            ctx.moveTo(x0, y0);
            ctx.lineTo(x1, y1);
            if (stroke) {
                ctx.closePath();
                ctx.stroke();
            }
        }
    }

    class TwoView {
        static defaultOptions() {
            return {
                div: document.body,
                useSprites: false,
                patchSize: 10,
            }
        }
        constructor(world, options = {}) {
            if (world.world) world = world.world;
            options = Object.assign(TwoView.defaultOptions(), options);
            if (options.width) {
                options.patchSize = options.width / world.width;
                delete options.width;
            }
            let div = options.div;
            let can = div;
            div = isString(div) ? document.getElementById(div) : div;
            if (!isCanvas(can)) {
                can = createCanvas(0, 0, false);
                div.appendChild(can);
            }
            this.ctx = can.getContext('2d');
            this.world = world;
            this.patchesView = new PatchesView(this.world.width, this.world.height);
            this.turtlesView = new TurtlesView(this.ctx, this.world, options);
            this.ticks = 0;
            this.clear();
        }
        tick() {
            this.ticks++;
        }
        get canvas() {
            return this.ctx.canvas
        }
        reset(patchSize, useSprites = this.useSprites) {
            this.turtlesView.reset(patchSize, useSprites);
        }
        downloadCanvas(name = undefined) {
            if (!name)
                name = this.model.constructor.name
                    .toLowerCase()
                    .replace(/model$/, '');
            downloadCanvas(this.canvas, name);
        }
        get width() {
            return this.world.width * this.patchSize
        }
        set width(val) {
            this.reset(val / this.world.width);
        }
        get patchSize() {
            return this.turtlesView.patchSize
        }
        set patchSize(val) {
            this.reset(val);
        }
        get useSprites() {
            return this.turtlesView.useSprites
        }
        set useSprites(val) {
            this.reset(this.patchSize, val);
        }
        clear(cssColor) {
            clearCtx(this.ctx, cssColor);
        }
        createPatchPixels(pixelFcn) {
            this.patchesView.createPixels(pixelFcn);
        }
        setPatchPixel(index, pixel) {
            this.patchesView.setPixel(index, pixel);
        }
        setPatchesPixels(data, pixelFcn) {
            this.patchesView.setPixels(data, pixelFcn);
        }
        setPatchesSmoothing(smoothing) {
            this.patchesView.setPatchesSmoothing(smoothing);
        }
        drawPatchesImage(img) {
            fillCtxWithImage(this.ctx, img);
        }
        drawPatches(data, pixelFcn) {
            if (data != null) {
                this.patchesView.setPixels(data, pixelFcn);
            }
            this.patchesView.draw(this.ctx);
        }
        drawTurtles(data, viewFcn) {
            this.turtlesView.drawTurtles(data, viewFcn);
        }
        drawLinks(data, viewFcn) {
            this.turtlesView.drawLinks(data, viewFcn);
        }
        setTextProperties(font, textAlign = 'center', textBaseline = 'middle') {
            if (typeof font === 'number')
                font = `${this.patchSize * font}px sans-serif`;
            setTextProperties(this.ctx, font, textAlign, textBaseline);
        }
        drawText(string, x, y, color = 'black') {
    [x, y] = this.world.patchXYtoPixelXY(x, y, this.patchSize);
            string = '' + string;
            drawText(this.ctx, string, x, y, color);
        }
    }

    class TwoDraw extends TwoView {
        static defaultOptions(model) {
            return {
                patchesColor: 'random',
                initPatches: null,
                turtles: model.turtles,
                turtlesColor: 'random',
                turtlesStrokeColor: 'random',
                turtlesShape: 'dart',
                turtlesSize: 1,
                turtlesRotate: true,
                links: model.links,
                linksColor: 'random',
                linksWidth: 1,
                textProperty: null,
                textSize: 0.5,
                textColor: 'black',
                patchesMap: 'DarkGray',
                turtlesMap: 'Basic16',
            }
        }
        static separateDrawOptions(viewOptions, drawOptions) {
            if (viewOptions.drawOptions) {
                Object.assign(drawOptions, viewOptions.drawOptions);
                delete viewOptions.drawOptions;
            }
            return drawOptions
        }
        constructor(model, viewOptions = {}, drawOptions = {}) {
            drawOptions = TwoDraw.separateDrawOptions(viewOptions, drawOptions);
            drawOptions = Object.assign(
                TwoDraw.defaultOptions(model),
                drawOptions
            );
            super(model, viewOptions);
            this.model = model;
            this.checkOptions(drawOptions);
            this.drawOptions = drawOptions;
        }
        checkOptions(drawOptions) {
            const keys = Object.keys(drawOptions);
            const defaults = TwoDraw.defaultOptions(this.model);
            keys.forEach(k => {
                if (defaults[k] === undefined) {
                    console.log(
                        'Legal TwoDraw parameters',
                        Object.keys(TwoDraw.defaultOptions(this.model))
                    );
                    throw Error('Unknown TwoDraw parameter: ' + k)
                }
            });
            if (typeof drawOptions.patchesMap === 'string') {
                drawOptions.patchesMap = ColorMap[drawOptions.patchesMap];
                if (!drawOptions.patchesMap)
                    Error('Unknown patchMap: ' + drawOptions.patchesMap);
            }
            if (typeof drawOptions.turtlesMap === 'string') {
                drawOptions.turtlesMap = ColorMap[drawOptions.turtlesMap];
                if (!drawOptions.turtlesMap)
                    Error('Unknown turtlesMap: ' + drawOptions.turtlesMap);
            }
        }
        resetOptions(drawOptions = this.drawOptions) {
            this.checkOptions(drawOptions);
            this.drawOptions = drawOptions;
            this.ticks = 0;
            return drawOptions
        }
        draw() {
            const model = this.model;
            const view = this;
            let {
                patchesColor,
                initPatches,
                turtles,
                turtlesColor,
                turtlesStrokeColor,
                turtlesShape,
                turtlesSize,
                turtlesRotate,
                links,
                linksColor,
                linksWidth,
                textProperty,
                textSize,
                textColor,
                patchesMap,
                turtlesMap,
            } = this.drawOptions;
            if (view.ticks === 0) {
                if (textProperty) view.setTextProperties(textSize);
                if (initPatches) {
                    const colors = initPatches(model, view);
                    view.createPatchPixels(i => colors[i]);
                } else if (patchesColor === 'random') {
                    view.createPatchPixels(i => patchesMap.randomColor());
                }
            }
            if (patchesColor === 'random' || initPatches) {
                view.clear();
                view.drawPatches();
            } else if (typeof patchesColor === 'function') {
                view.drawPatches(model.patches, p => patchesColor(p));
            } else if (isImageable(patchesColor)) {
                view.drawPatchesImage(patchesColor);
            } else {
                view.clear(patchesColor);
            }
            const checkColor = (agent, color) =>
                color === 'random' ? turtlesMap.atIndex(agent.id).css : color;
            view.drawLinks(links, l => ({
                color:
                    linksColor === 'random'
                        ? turtlesMap.atIndex(l.id)
                        : typeof linksColor === 'function'
                        ? checkColor(l, linksColor(l))
                        : linksColor,
                width: linksWidth,
            }));
            view.drawTurtles(turtles, t => ({
                shape:
                    typeof turtlesShape === 'function'
                        ? turtlesShape(t)
                        : turtlesShape,
                color:
                    turtlesColor === 'random'
                        ? turtlesMap.atIndex(t.id).css
                        : typeof turtlesColor === 'function'
                        ? checkColor(t, turtlesColor(t))
                        : turtlesColor,
                strokeColor:
                    turtlesStrokeColor === 'random'
                        ? turtlesMap.atIndex(t.id + 4).css
                        : typeof turtlesColor === 'function'
                        ? checkColor(t, turtlesColor(t))
                        : turtlesColor,
                size:
                    typeof turtlesSize === 'function'
                        ? turtlesSize(t)
                        : turtlesSize,
                noRotate:
                    typeof turtlesRotate === 'function'
                        ? !turtlesRotate(t)
                        : !turtlesRotate,
            }));
            if (textProperty) {
                turtles.ask(t => {
                    if (t[textProperty] != null)
                        view.drawText(t[textProperty], t.x, t.y, textColor);
                });
            }
            view.tick();
        }
    }

    if ( Number.EPSILON === undefined ) {
    	Number.EPSILON = Math.pow( 2, - 52 );
    }
    if ( Number.isInteger === undefined ) {
    	Number.isInteger = function ( value ) {
    		return typeof value === 'number' && isFinite( value ) && Math.floor( value ) === value;
    	};
    }
    if ( Math.sign === undefined ) {
    	Math.sign = function ( x ) {
    		return ( x < 0 ) ? - 1 : ( x > 0 ) ? 1 : + x;
    	};
    }
    if ( 'name' in Function.prototype === false ) {
    	Object.defineProperty( Function.prototype, 'name', {
    		get: function () {
    			return this.toString().match( /^\s*function\s*([^\(\s]*)/ )[ 1 ];
    		}
    	} );
    }
    if ( Object.assign === undefined ) {
    	Object.assign = function ( target ) {
    		if ( target === undefined || target === null ) {
    			throw new TypeError( 'Cannot convert undefined or null to object' );
    		}
    		const output = Object( target );
    		for ( let index = 1; index < arguments.length; index ++ ) {
    			const source = arguments[ index ];
    			if ( source !== undefined && source !== null ) {
    				for ( const nextKey in source ) {
    					if ( Object.prototype.hasOwnProperty.call( source, nextKey ) ) {
    						output[ nextKey ] = source[ nextKey ];
    					}
    				}
    			}
    		}
    		return output;
    	};
    }
    const REVISION = '120';
    const MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
    const TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
    const CullFaceNone = 0;
    const CullFaceBack = 1;
    const CullFaceFront = 2;
    const CullFaceFrontBack = 3;
    const BasicShadowMap = 0;
    const PCFShadowMap = 1;
    const PCFSoftShadowMap = 2;
    const VSMShadowMap = 3;
    const FrontSide = 0;
    const BackSide = 1;
    const DoubleSide = 2;
    const FlatShading = 1;
    const SmoothShading = 2;
    const NoBlending = 0;
    const NormalBlending = 1;
    const AdditiveBlending = 2;
    const SubtractiveBlending = 3;
    const MultiplyBlending = 4;
    const CustomBlending = 5;
    const AddEquation = 100;
    const SubtractEquation = 101;
    const ReverseSubtractEquation = 102;
    const MinEquation = 103;
    const MaxEquation = 104;
    const ZeroFactor = 200;
    const OneFactor = 201;
    const SrcColorFactor = 202;
    const OneMinusSrcColorFactor = 203;
    const SrcAlphaFactor = 204;
    const OneMinusSrcAlphaFactor = 205;
    const DstAlphaFactor = 206;
    const OneMinusDstAlphaFactor = 207;
    const DstColorFactor = 208;
    const OneMinusDstColorFactor = 209;
    const SrcAlphaSaturateFactor = 210;
    const NeverDepth = 0;
    const AlwaysDepth = 1;
    const LessDepth = 2;
    const LessEqualDepth = 3;
    const EqualDepth = 4;
    const GreaterEqualDepth = 5;
    const GreaterDepth = 6;
    const NotEqualDepth = 7;
    const MultiplyOperation = 0;
    const MixOperation = 1;
    const AddOperation = 2;
    const NoToneMapping = 0;
    const LinearToneMapping = 1;
    const ReinhardToneMapping = 2;
    const CineonToneMapping = 3;
    const ACESFilmicToneMapping = 4;
    const CustomToneMapping = 5;
    const UVMapping = 300;
    const CubeReflectionMapping = 301;
    const CubeRefractionMapping = 302;
    const EquirectangularReflectionMapping = 303;
    const EquirectangularRefractionMapping = 304;
    const CubeUVReflectionMapping = 306;
    const CubeUVRefractionMapping = 307;
    const RepeatWrapping = 1000;
    const ClampToEdgeWrapping = 1001;
    const MirroredRepeatWrapping = 1002;
    const NearestFilter = 1003;
    const NearestMipmapNearestFilter = 1004;
    const NearestMipMapNearestFilter = 1004;
    const NearestMipmapLinearFilter = 1005;
    const NearestMipMapLinearFilter = 1005;
    const LinearFilter = 1006;
    const LinearMipmapNearestFilter = 1007;
    const LinearMipMapNearestFilter = 1007;
    const LinearMipmapLinearFilter = 1008;
    const LinearMipMapLinearFilter = 1008;
    const UnsignedByteType = 1009;
    const ByteType = 1010;
    const ShortType = 1011;
    const UnsignedShortType = 1012;
    const IntType = 1013;
    const UnsignedIntType = 1014;
    const FloatType = 1015;
    const HalfFloatType = 1016;
    const UnsignedShort4444Type = 1017;
    const UnsignedShort5551Type = 1018;
    const UnsignedShort565Type = 1019;
    const UnsignedInt248Type = 1020;
    const AlphaFormat = 1021;
    const RGBFormat = 1022;
    const RGBAFormat = 1023;
    const LuminanceFormat = 1024;
    const LuminanceAlphaFormat = 1025;
    const RGBEFormat = RGBAFormat;
    const DepthFormat = 1026;
    const DepthStencilFormat = 1027;
    const RedFormat = 1028;
    const RedIntegerFormat = 1029;
    const RGFormat = 1030;
    const RGIntegerFormat = 1031;
    const RGBIntegerFormat = 1032;
    const RGBAIntegerFormat = 1033;
    const RGB_S3TC_DXT1_Format = 33776;
    const RGBA_S3TC_DXT1_Format = 33777;
    const RGBA_S3TC_DXT3_Format = 33778;
    const RGBA_S3TC_DXT5_Format = 33779;
    const RGB_PVRTC_4BPPV1_Format = 35840;
    const RGB_PVRTC_2BPPV1_Format = 35841;
    const RGBA_PVRTC_4BPPV1_Format = 35842;
    const RGBA_PVRTC_2BPPV1_Format = 35843;
    const RGB_ETC1_Format = 36196;
    const RGB_ETC2_Format = 37492;
    const RGBA_ETC2_EAC_Format = 37496;
    const RGBA_ASTC_4x4_Format = 37808;
    const RGBA_ASTC_5x4_Format = 37809;
    const RGBA_ASTC_5x5_Format = 37810;
    const RGBA_ASTC_6x5_Format = 37811;
    const RGBA_ASTC_6x6_Format = 37812;
    const RGBA_ASTC_8x5_Format = 37813;
    const RGBA_ASTC_8x6_Format = 37814;
    const RGBA_ASTC_8x8_Format = 37815;
    const RGBA_ASTC_10x5_Format = 37816;
    const RGBA_ASTC_10x6_Format = 37817;
    const RGBA_ASTC_10x8_Format = 37818;
    const RGBA_ASTC_10x10_Format = 37819;
    const RGBA_ASTC_12x10_Format = 37820;
    const RGBA_ASTC_12x12_Format = 37821;
    const RGBA_BPTC_Format = 36492;
    const SRGB8_ALPHA8_ASTC_4x4_Format = 37840;
    const SRGB8_ALPHA8_ASTC_5x4_Format = 37841;
    const SRGB8_ALPHA8_ASTC_5x5_Format = 37842;
    const SRGB8_ALPHA8_ASTC_6x5_Format = 37843;
    const SRGB8_ALPHA8_ASTC_6x6_Format = 37844;
    const SRGB8_ALPHA8_ASTC_8x5_Format = 37845;
    const SRGB8_ALPHA8_ASTC_8x6_Format = 37846;
    const SRGB8_ALPHA8_ASTC_8x8_Format = 37847;
    const SRGB8_ALPHA8_ASTC_10x5_Format = 37848;
    const SRGB8_ALPHA8_ASTC_10x6_Format = 37849;
    const SRGB8_ALPHA8_ASTC_10x8_Format = 37850;
    const SRGB8_ALPHA8_ASTC_10x10_Format = 37851;
    const SRGB8_ALPHA8_ASTC_12x10_Format = 37852;
    const SRGB8_ALPHA8_ASTC_12x12_Format = 37853;
    const LoopOnce = 2200;
    const LoopRepeat = 2201;
    const LoopPingPong = 2202;
    const InterpolateDiscrete = 2300;
    const InterpolateLinear = 2301;
    const InterpolateSmooth = 2302;
    const ZeroCurvatureEnding = 2400;
    const ZeroSlopeEnding = 2401;
    const WrapAroundEnding = 2402;
    const NormalAnimationBlendMode = 2500;
    const AdditiveAnimationBlendMode = 2501;
    const TrianglesDrawMode = 0;
    const TriangleStripDrawMode = 1;
    const TriangleFanDrawMode = 2;
    const LinearEncoding = 3000;
    const sRGBEncoding = 3001;
    const GammaEncoding = 3007;
    const RGBEEncoding = 3002;
    const LogLuvEncoding = 3003;
    const RGBM7Encoding = 3004;
    const RGBM16Encoding = 3005;
    const RGBDEncoding = 3006;
    const BasicDepthPacking = 3200;
    const RGBADepthPacking = 3201;
    const TangentSpaceNormalMap = 0;
    const ObjectSpaceNormalMap = 1;
    const ZeroStencilOp = 0;
    const KeepStencilOp = 7680;
    const ReplaceStencilOp = 7681;
    const IncrementStencilOp = 7682;
    const DecrementStencilOp = 7683;
    const IncrementWrapStencilOp = 34055;
    const DecrementWrapStencilOp = 34056;
    const InvertStencilOp = 5386;
    const NeverStencilFunc = 512;
    const LessStencilFunc = 513;
    const EqualStencilFunc = 514;
    const LessEqualStencilFunc = 515;
    const GreaterStencilFunc = 516;
    const NotEqualStencilFunc = 517;
    const GreaterEqualStencilFunc = 518;
    const AlwaysStencilFunc = 519;
    const StaticDrawUsage = 35044;
    const DynamicDrawUsage = 35048;
    const StreamDrawUsage = 35040;
    const StaticReadUsage = 35045;
    const DynamicReadUsage = 35049;
    const StreamReadUsage = 35041;
    const StaticCopyUsage = 35046;
    const DynamicCopyUsage = 35050;
    const StreamCopyUsage = 35042;
    const GLSL1 = "100";
    const GLSL3 = "300 es";
    function EventDispatcher() {}
    Object.assign( EventDispatcher.prototype, {
    	addEventListener: function ( type, listener ) {
    		if ( this._listeners === undefined ) this._listeners = {};
    		const listeners = this._listeners;
    		if ( listeners[ type ] === undefined ) {
    			listeners[ type ] = [];
    		}
    		if ( listeners[ type ].indexOf( listener ) === - 1 ) {
    			listeners[ type ].push( listener );
    		}
    	},
    	hasEventListener: function ( type, listener ) {
    		if ( this._listeners === undefined ) return false;
    		const listeners = this._listeners;
    		return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;
    	},
    	removeEventListener: function ( type, listener ) {
    		if ( this._listeners === undefined ) return;
    		const listeners = this._listeners;
    		const listenerArray = listeners[ type ];
    		if ( listenerArray !== undefined ) {
    			const index = listenerArray.indexOf( listener );
    			if ( index !== - 1 ) {
    				listenerArray.splice( index, 1 );
    			}
    		}
    	},
    	dispatchEvent: function ( event ) {
    		if ( this._listeners === undefined ) return;
    		const listeners = this._listeners;
    		const listenerArray = listeners[ event.type ];
    		if ( listenerArray !== undefined ) {
    			event.target = this;
    			const array = listenerArray.slice( 0 );
    			for ( let i = 0, l = array.length; i < l; i ++ ) {
    				array[ i ].call( this, event );
    			}
    		}
    	}
    } );
    const _lut = [];
    for ( let i = 0; i < 256; i ++ ) {
    	_lut[ i ] = ( i < 16 ? '0' : '' ) + ( i ).toString( 16 );
    }
    let _seed = 1234567;
    const MathUtils = {
    	DEG2RAD: Math.PI / 180,
    	RAD2DEG: 180 / Math.PI,
    	generateUUID: function () {
    		const d0 = Math.random() * 0xffffffff | 0;
    		const d1 = Math.random() * 0xffffffff | 0;
    		const d2 = Math.random() * 0xffffffff | 0;
    		const d3 = Math.random() * 0xffffffff | 0;
    		const uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +
    			_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +
    			_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +
    			_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];
    		return uuid.toUpperCase();
    	},
    	clamp: function ( value, min, max ) {
    		return Math.max( min, Math.min( max, value ) );
    	},
    	euclideanModulo: function ( n, m ) {
    		return ( ( n % m ) + m ) % m;
    	},
    	mapLinear: function ( x, a1, a2, b1, b2 ) {
    		return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );
    	},
    	lerp: function ( x, y, t ) {
    		return ( 1 - t ) * x + t * y;
    	},
    	smoothstep: function ( x, min, max ) {
    		if ( x <= min ) return 0;
    		if ( x >= max ) return 1;
    		x = ( x - min ) / ( max - min );
    		return x * x * ( 3 - 2 * x );
    	},
    	smootherstep: function ( x, min, max ) {
    		if ( x <= min ) return 0;
    		if ( x >= max ) return 1;
    		x = ( x - min ) / ( max - min );
    		return x * x * x * ( x * ( x * 6 - 15 ) + 10 );
    	},
    	randInt: function ( low, high ) {
    		return low + Math.floor( Math.random() * ( high - low + 1 ) );
    	},
    	randFloat: function ( low, high ) {
    		return low + Math.random() * ( high - low );
    	},
    	randFloatSpread: function ( range ) {
    		return range * ( 0.5 - Math.random() );
    	},
    	seededRandom: function ( s ) {
    		if ( s !== undefined ) _seed = s % 2147483647;
    		_seed = _seed * 16807 % 2147483647;
    		return ( _seed - 1 ) / 2147483646;
    	},
    	degToRad: function ( degrees ) {
    		return degrees * MathUtils.DEG2RAD;
    	},
    	radToDeg: function ( radians ) {
    		return radians * MathUtils.RAD2DEG;
    	},
    	isPowerOfTwo: function ( value ) {
    		return ( value & ( value - 1 ) ) === 0 && value !== 0;
    	},
    	ceilPowerOfTwo: function ( value ) {
    		return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );
    	},
    	floorPowerOfTwo: function ( value ) {
    		return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );
    	},
    	setQuaternionFromProperEuler: function ( q, a, b, c, order ) {
    		const cos = Math.cos;
    		const sin = Math.sin;
    		const c2 = cos( b / 2 );
    		const s2 = sin( b / 2 );
    		const c13 = cos( ( a + c ) / 2 );
    		const s13 = sin( ( a + c ) / 2 );
    		const c1_3 = cos( ( a - c ) / 2 );
    		const s1_3 = sin( ( a - c ) / 2 );
    		const c3_1 = cos( ( c - a ) / 2 );
    		const s3_1 = sin( ( c - a ) / 2 );
    		switch ( order ) {
    			case 'XYX':
    				q.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );
    				break;
    			case 'YZY':
    				q.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );
    				break;
    			case 'ZXZ':
    				q.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );
    				break;
    			case 'XZX':
    				q.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );
    				break;
    			case 'YXY':
    				q.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );
    				break;
    			case 'ZYZ':
    				q.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );
    				break;
    			default:
    				console.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );
    		}
    	}
    };
    class Vector2 {
    	constructor( x = 0, y = 0 ) {
    		Object.defineProperty( this, 'isVector2', { value: true } );
    		this.x = x;
    		this.y = y;
    	}
    	get width() {
    		return this.x;
    	}
    	set width( value ) {
    		this.x = value;
    	}
    	get height() {
    		return this.y;
    	}
    	set height( value ) {
    		this.y = value;
    	}
    	set( x, y ) {
    		this.x = x;
    		this.y = y;
    		return this;
    	}
    	setScalar( scalar ) {
    		this.x = scalar;
    		this.y = scalar;
    		return this;
    	}
    	setX( x ) {
    		this.x = x;
    		return this;
    	}
    	setY( y ) {
    		this.y = y;
    		return this;
    	}
    	setComponent( index, value ) {
    		switch ( index ) {
    			case 0: this.x = value; break;
    			case 1: this.y = value; break;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    		return this;
    	}
    	getComponent( index ) {
    		switch ( index ) {
    			case 0: return this.x;
    			case 1: return this.y;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    	}
    	clone() {
    		return new this.constructor( this.x, this.y );
    	}
    	copy( v ) {
    		this.x = v.x;
    		this.y = v.y;
    		return this;
    	}
    	add( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
    			return this.addVectors( v, w );
    		}
    		this.x += v.x;
    		this.y += v.y;
    		return this;
    	}
    	addScalar( s ) {
    		this.x += s;
    		this.y += s;
    		return this;
    	}
    	addVectors( a, b ) {
    		this.x = a.x + b.x;
    		this.y = a.y + b.y;
    		return this;
    	}
    	addScaledVector( v, s ) {
    		this.x += v.x * s;
    		this.y += v.y * s;
    		return this;
    	}
    	sub( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
    			return this.subVectors( v, w );
    		}
    		this.x -= v.x;
    		this.y -= v.y;
    		return this;
    	}
    	subScalar( s ) {
    		this.x -= s;
    		this.y -= s;
    		return this;
    	}
    	subVectors( a, b ) {
    		this.x = a.x - b.x;
    		this.y = a.y - b.y;
    		return this;
    	}
    	multiply( v ) {
    		this.x *= v.x;
    		this.y *= v.y;
    		return this;
    	}
    	multiplyScalar( scalar ) {
    		this.x *= scalar;
    		this.y *= scalar;
    		return this;
    	}
    	divide( v ) {
    		this.x /= v.x;
    		this.y /= v.y;
    		return this;
    	}
    	divideScalar( scalar ) {
    		return this.multiplyScalar( 1 / scalar );
    	}
    	applyMatrix3( m ) {
    		const x = this.x, y = this.y;
    		const e = m.elements;
    		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
    		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];
    		return this;
    	}
    	min( v ) {
    		this.x = Math.min( this.x, v.x );
    		this.y = Math.min( this.y, v.y );
    		return this;
    	}
    	max( v ) {
    		this.x = Math.max( this.x, v.x );
    		this.y = Math.max( this.y, v.y );
    		return this;
    	}
    	clamp( min, max ) {
    		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
    		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
    		return this;
    	}
    	clampScalar( minVal, maxVal ) {
    		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
    		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
    		return this;
    	}
    	clampLength( min, max ) {
    		const length = this.length();
    		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
    	}
    	floor() {
    		this.x = Math.floor( this.x );
    		this.y = Math.floor( this.y );
    		return this;
    	}
    	ceil() {
    		this.x = Math.ceil( this.x );
    		this.y = Math.ceil( this.y );
    		return this;
    	}
    	round() {
    		this.x = Math.round( this.x );
    		this.y = Math.round( this.y );
    		return this;
    	}
    	roundToZero() {
    		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
    		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
    		return this;
    	}
    	negate() {
    		this.x = - this.x;
    		this.y = - this.y;
    		return this;
    	}
    	dot( v ) {
    		return this.x * v.x + this.y * v.y;
    	}
    	cross( v ) {
    		return this.x * v.y - this.y * v.x;
    	}
    	lengthSq() {
    		return this.x * this.x + this.y * this.y;
    	}
    	length() {
    		return Math.sqrt( this.x * this.x + this.y * this.y );
    	}
    	manhattanLength() {
    		return Math.abs( this.x ) + Math.abs( this.y );
    	}
    	normalize() {
    		return this.divideScalar( this.length() || 1 );
    	}
    	angle() {
    		const angle = Math.atan2( - this.y, - this.x ) + Math.PI;
    		return angle;
    	}
    	distanceTo( v ) {
    		return Math.sqrt( this.distanceToSquared( v ) );
    	}
    	distanceToSquared( v ) {
    		const dx = this.x - v.x, dy = this.y - v.y;
    		return dx * dx + dy * dy;
    	}
    	manhattanDistanceTo( v ) {
    		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );
    	}
    	setLength( length ) {
    		return this.normalize().multiplyScalar( length );
    	}
    	lerp( v, alpha ) {
    		this.x += ( v.x - this.x ) * alpha;
    		this.y += ( v.y - this.y ) * alpha;
    		return this;
    	}
    	lerpVectors( v1, v2, alpha ) {
    		this.x = v1.x + ( v2.x - v1.x ) * alpha;
    		this.y = v1.y + ( v2.y - v1.y ) * alpha;
    		return this;
    	}
    	equals( v ) {
    		return ( ( v.x === this.x ) && ( v.y === this.y ) );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this.x = array[ offset ];
    		this.y = array[ offset + 1 ];
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this.x;
    		array[ offset + 1 ] = this.y;
    		return array;
    	}
    	fromBufferAttribute( attribute, index, offset ) {
    		if ( offset !== undefined ) {
    			console.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' );
    		}
    		this.x = attribute.getX( index );
    		this.y = attribute.getY( index );
    		return this;
    	}
    	rotateAround( center, angle ) {
    		const c = Math.cos( angle ), s = Math.sin( angle );
    		const x = this.x - center.x;
    		const y = this.y - center.y;
    		this.x = x * c - y * s + center.x;
    		this.y = x * s + y * c + center.y;
    		return this;
    	}
    	random() {
    		this.x = Math.random();
    		this.y = Math.random();
    		return this;
    	}
    }
    class Matrix3 {
    	constructor() {
    		Object.defineProperty( this, 'isMatrix3', { value: true } );
    		this.elements = [
    			1, 0, 0,
    			0, 1, 0,
    			0, 0, 1
    		];
    		if ( arguments.length > 0 ) {
    			console.error( 'THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.' );
    		}
    	}
    	set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
    		const te = this.elements;
    		te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
    		te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
    		te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;
    		return this;
    	}
    	identity() {
    		this.set(
    			1, 0, 0,
    			0, 1, 0,
    			0, 0, 1
    		);
    		return this;
    	}
    	clone() {
    		return new this.constructor().fromArray( this.elements );
    	}
    	copy( m ) {
    		const te = this.elements;
    		const me = m.elements;
    		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
    		te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
    		te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];
    		return this;
    	}
    	extractBasis( xAxis, yAxis, zAxis ) {
    		xAxis.setFromMatrix3Column( this, 0 );
    		yAxis.setFromMatrix3Column( this, 1 );
    		zAxis.setFromMatrix3Column( this, 2 );
    		return this;
    	}
    	setFromMatrix4( m ) {
    		const me = m.elements;
    		this.set(
    			me[ 0 ], me[ 4 ], me[ 8 ],
    			me[ 1 ], me[ 5 ], me[ 9 ],
    			me[ 2 ], me[ 6 ], me[ 10 ]
    		);
    		return this;
    	}
    	multiply( m ) {
    		return this.multiplyMatrices( this, m );
    	}
    	premultiply( m ) {
    		return this.multiplyMatrices( m, this );
    	}
    	multiplyMatrices( a, b ) {
    		const ae = a.elements;
    		const be = b.elements;
    		const te = this.elements;
    		const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
    		const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
    		const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];
    		const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
    		const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
    		const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];
    		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
    		te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
    		te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;
    		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
    		te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
    		te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;
    		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
    		te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
    		te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;
    		return this;
    	}
    	multiplyScalar( s ) {
    		const te = this.elements;
    		te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
    		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
    		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;
    		return this;
    	}
    	determinant() {
    		const te = this.elements;
    		const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
    			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
    			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];
    		return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
    	}
    	getInverse( matrix, throwOnDegenerate ) {
    		if ( throwOnDegenerate !== undefined ) {
    			console.warn( "THREE.Matrix3: .getInverse() can no longer be configured to throw on degenerate." );
    		}
    		const me = matrix.elements,
    			te = this.elements,
    			n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ],
    			n12 = me[ 3 ], n22 = me[ 4 ], n32 = me[ 5 ],
    			n13 = me[ 6 ], n23 = me[ 7 ], n33 = me[ 8 ],
    			t11 = n33 * n22 - n32 * n23,
    			t12 = n32 * n13 - n33 * n12,
    			t13 = n23 * n12 - n22 * n13,
    			det = n11 * t11 + n21 * t12 + n31 * t13;
    		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );
    		const detInv = 1 / det;
    		te[ 0 ] = t11 * detInv;
    		te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
    		te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;
    		te[ 3 ] = t12 * detInv;
    		te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
    		te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;
    		te[ 6 ] = t13 * detInv;
    		te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
    		te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;
    		return this;
    	}
    	transpose() {
    		let tmp;
    		const m = this.elements;
    		tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
    		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
    		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;
    		return this;
    	}
    	getNormalMatrix( matrix4 ) {
    		return this.setFromMatrix4( matrix4 ).getInverse( this ).transpose();
    	}
    	transposeIntoArray( r ) {
    		const m = this.elements;
    		r[ 0 ] = m[ 0 ];
    		r[ 1 ] = m[ 3 ];
    		r[ 2 ] = m[ 6 ];
    		r[ 3 ] = m[ 1 ];
    		r[ 4 ] = m[ 4 ];
    		r[ 5 ] = m[ 7 ];
    		r[ 6 ] = m[ 2 ];
    		r[ 7 ] = m[ 5 ];
    		r[ 8 ] = m[ 8 ];
    		return this;
    	}
    	setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {
    		const c = Math.cos( rotation );
    		const s = Math.sin( rotation );
    		this.set(
    			sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
    			- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
    			0, 0, 1
    		);
    	}
    	scale( sx, sy ) {
    		const te = this.elements;
    		te[ 0 ] *= sx; te[ 3 ] *= sx; te[ 6 ] *= sx;
    		te[ 1 ] *= sy; te[ 4 ] *= sy; te[ 7 ] *= sy;
    		return this;
    	}
    	rotate( theta ) {
    		const c = Math.cos( theta );
    		const s = Math.sin( theta );
    		const te = this.elements;
    		const a11 = te[ 0 ], a12 = te[ 3 ], a13 = te[ 6 ];
    		const a21 = te[ 1 ], a22 = te[ 4 ], a23 = te[ 7 ];
    		te[ 0 ] = c * a11 + s * a21;
    		te[ 3 ] = c * a12 + s * a22;
    		te[ 6 ] = c * a13 + s * a23;
    		te[ 1 ] = - s * a11 + c * a21;
    		te[ 4 ] = - s * a12 + c * a22;
    		te[ 7 ] = - s * a13 + c * a23;
    		return this;
    	}
    	translate( tx, ty ) {
    		const te = this.elements;
    		te[ 0 ] += tx * te[ 2 ]; te[ 3 ] += tx * te[ 5 ]; te[ 6 ] += tx * te[ 8 ];
    		te[ 1 ] += ty * te[ 2 ]; te[ 4 ] += ty * te[ 5 ]; te[ 7 ] += ty * te[ 8 ];
    		return this;
    	}
    	equals( matrix ) {
    		const te = this.elements;
    		const me = matrix.elements;
    		for ( let i = 0; i < 9; i ++ ) {
    			if ( te[ i ] !== me[ i ] ) return false;
    		}
    		return true;
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		for ( let i = 0; i < 9; i ++ ) {
    			this.elements[ i ] = array[ i + offset ];
    		}
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		const te = this.elements;
    		array[ offset ] = te[ 0 ];
    		array[ offset + 1 ] = te[ 1 ];
    		array[ offset + 2 ] = te[ 2 ];
    		array[ offset + 3 ] = te[ 3 ];
    		array[ offset + 4 ] = te[ 4 ];
    		array[ offset + 5 ] = te[ 5 ];
    		array[ offset + 6 ] = te[ 6 ];
    		array[ offset + 7 ] = te[ 7 ];
    		array[ offset + 8 ] = te[ 8 ];
    		return array;
    	}
    }
    let _canvas;
    const ImageUtils = {
    	getDataURL: function ( image ) {
    		if ( /^data:/i.test( image.src ) ) {
    			return image.src;
    		}
    		if ( typeof HTMLCanvasElement == 'undefined' ) {
    			return image.src;
    		}
    		let canvas;
    		if ( image instanceof HTMLCanvasElement ) {
    			canvas = image;
    		} else {
    			if ( _canvas === undefined ) _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
    			_canvas.width = image.width;
    			_canvas.height = image.height;
    			const context = _canvas.getContext( '2d' );
    			if ( image instanceof ImageData ) {
    				context.putImageData( image, 0, 0 );
    			} else {
    				context.drawImage( image, 0, 0, image.width, image.height );
    			}
    			canvas = _canvas;
    		}
    		if ( canvas.width > 2048 || canvas.height > 2048 ) {
    			return canvas.toDataURL( 'image/jpeg', 0.6 );
    		} else {
    			return canvas.toDataURL( 'image/png' );
    		}
    	}
    };
    let textureId = 0;
    function Texture( image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
    	Object.defineProperty( this, 'id', { value: textureId ++ } );
    	this.uuid = MathUtils.generateUUID();
    	this.name = '';
    	this.image = image !== undefined ? image : Texture.DEFAULT_IMAGE;
    	this.mipmaps = [];
    	this.mapping = mapping !== undefined ? mapping : Texture.DEFAULT_MAPPING;
    	this.wrapS = wrapS !== undefined ? wrapS : ClampToEdgeWrapping;
    	this.wrapT = wrapT !== undefined ? wrapT : ClampToEdgeWrapping;
    	this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
    	this.minFilter = minFilter !== undefined ? minFilter : LinearMipmapLinearFilter;
    	this.anisotropy = anisotropy !== undefined ? anisotropy : 1;
    	this.format = format !== undefined ? format : RGBAFormat;
    	this.internalFormat = null;
    	this.type = type !== undefined ? type : UnsignedByteType;
    	this.offset = new Vector2( 0, 0 );
    	this.repeat = new Vector2( 1, 1 );
    	this.center = new Vector2( 0, 0 );
    	this.rotation = 0;
    	this.matrixAutoUpdate = true;
    	this.matrix = new Matrix3();
    	this.generateMipmaps = true;
    	this.premultiplyAlpha = false;
    	this.flipY = true;
    	this.unpackAlignment = 4;
    	this.encoding = encoding !== undefined ? encoding : LinearEncoding;
    	this.version = 0;
    	this.onUpdate = null;
    }
    Texture.DEFAULT_IMAGE = undefined;
    Texture.DEFAULT_MAPPING = UVMapping;
    Texture.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
    	constructor: Texture,
    	isTexture: true,
    	updateMatrix: function () {
    		this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );
    	},
    	clone: function () {
    		return new this.constructor().copy( this );
    	},
    	copy: function ( source ) {
    		this.name = source.name;
    		this.image = source.image;
    		this.mipmaps = source.mipmaps.slice( 0 );
    		this.mapping = source.mapping;
    		this.wrapS = source.wrapS;
    		this.wrapT = source.wrapT;
    		this.magFilter = source.magFilter;
    		this.minFilter = source.minFilter;
    		this.anisotropy = source.anisotropy;
    		this.format = source.format;
    		this.internalFormat = source.internalFormat;
    		this.type = source.type;
    		this.offset.copy( source.offset );
    		this.repeat.copy( source.repeat );
    		this.center.copy( source.center );
    		this.rotation = source.rotation;
    		this.matrixAutoUpdate = source.matrixAutoUpdate;
    		this.matrix.copy( source.matrix );
    		this.generateMipmaps = source.generateMipmaps;
    		this.premultiplyAlpha = source.premultiplyAlpha;
    		this.flipY = source.flipY;
    		this.unpackAlignment = source.unpackAlignment;
    		this.encoding = source.encoding;
    		return this;
    	},
    	toJSON: function ( meta ) {
    		const isRootObject = ( meta === undefined || typeof meta === 'string' );
    		if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {
    			return meta.textures[ this.uuid ];
    		}
    		const output = {
    			metadata: {
    				version: 4.5,
    				type: 'Texture',
    				generator: 'Texture.toJSON'
    			},
    			uuid: this.uuid,
    			name: this.name,
    			mapping: this.mapping,
    			repeat: [ this.repeat.x, this.repeat.y ],
    			offset: [ this.offset.x, this.offset.y ],
    			center: [ this.center.x, this.center.y ],
    			rotation: this.rotation,
    			wrap: [ this.wrapS, this.wrapT ],
    			format: this.format,
    			type: this.type,
    			encoding: this.encoding,
    			minFilter: this.minFilter,
    			magFilter: this.magFilter,
    			anisotropy: this.anisotropy,
    			flipY: this.flipY,
    			premultiplyAlpha: this.premultiplyAlpha,
    			unpackAlignment: this.unpackAlignment
    		};
    		if ( this.image !== undefined ) {
    			const image = this.image;
    			if ( image.uuid === undefined ) {
    				image.uuid = MathUtils.generateUUID();
    			}
    			if ( ! isRootObject && meta.images[ image.uuid ] === undefined ) {
    				let url;
    				if ( Array.isArray( image ) ) {
    					url = [];
    					for ( let i = 0, l = image.length; i < l; i ++ ) {
    						url.push( ImageUtils.getDataURL( image[ i ] ) );
    					}
    				} else {
    					url = ImageUtils.getDataURL( image );
    				}
    				meta.images[ image.uuid ] = {
    					uuid: image.uuid,
    					url: url
    				};
    			}
    			output.image = image.uuid;
    		}
    		if ( ! isRootObject ) {
    			meta.textures[ this.uuid ] = output;
    		}
    		return output;
    	},
    	dispose: function () {
    		this.dispatchEvent( { type: 'dispose' } );
    	},
    	transformUv: function ( uv ) {
    		if ( this.mapping !== UVMapping ) return uv;
    		uv.applyMatrix3( this.matrix );
    		if ( uv.x < 0 || uv.x > 1 ) {
    			switch ( this.wrapS ) {
    				case RepeatWrapping:
    					uv.x = uv.x - Math.floor( uv.x );
    					break;
    				case ClampToEdgeWrapping:
    					uv.x = uv.x < 0 ? 0 : 1;
    					break;
    				case MirroredRepeatWrapping:
    					if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {
    						uv.x = Math.ceil( uv.x ) - uv.x;
    					} else {
    						uv.x = uv.x - Math.floor( uv.x );
    					}
    					break;
    			}
    		}
    		if ( uv.y < 0 || uv.y > 1 ) {
    			switch ( this.wrapT ) {
    				case RepeatWrapping:
    					uv.y = uv.y - Math.floor( uv.y );
    					break;
    				case ClampToEdgeWrapping:
    					uv.y = uv.y < 0 ? 0 : 1;
    					break;
    				case MirroredRepeatWrapping:
    					if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {
    						uv.y = Math.ceil( uv.y ) - uv.y;
    					} else {
    						uv.y = uv.y - Math.floor( uv.y );
    					}
    					break;
    			}
    		}
    		if ( this.flipY ) {
    			uv.y = 1 - uv.y;
    		}
    		return uv;
    	}
    } );
    Object.defineProperty( Texture.prototype, "needsUpdate", {
    	set: function ( value ) {
    		if ( value === true ) this.version ++;
    	}
    } );
    class Vector4 {
    	constructor( x = 0, y = 0, z = 0, w = 1 ) {
    		Object.defineProperty( this, 'isVector4', { value: true } );
    		this.x = x;
    		this.y = y;
    		this.z = z;
    		this.w = w;
    	}
    	get width() {
    		return this.z;
    	}
    	set width( value ) {
    		this.z = value;
    	}
    	get height() {
    		return this.w;
    	}
    	set height( value ) {
    		this.w = value;
    	}
    	set( x, y, z, w ) {
    		this.x = x;
    		this.y = y;
    		this.z = z;
    		this.w = w;
    		return this;
    	}
    	setScalar( scalar ) {
    		this.x = scalar;
    		this.y = scalar;
    		this.z = scalar;
    		this.w = scalar;
    		return this;
    	}
    	setX( x ) {
    		this.x = x;
    		return this;
    	}
    	setY( y ) {
    		this.y = y;
    		return this;
    	}
    	setZ( z ) {
    		this.z = z;
    		return this;
    	}
    	setW( w ) {
    		this.w = w;
    		return this;
    	}
    	setComponent( index, value ) {
    		switch ( index ) {
    			case 0: this.x = value; break;
    			case 1: this.y = value; break;
    			case 2: this.z = value; break;
    			case 3: this.w = value; break;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    		return this;
    	}
    	getComponent( index ) {
    		switch ( index ) {
    			case 0: return this.x;
    			case 1: return this.y;
    			case 2: return this.z;
    			case 3: return this.w;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    	}
    	clone() {
    		return new this.constructor( this.x, this.y, this.z, this.w );
    	}
    	copy( v ) {
    		this.x = v.x;
    		this.y = v.y;
    		this.z = v.z;
    		this.w = ( v.w !== undefined ) ? v.w : 1;
    		return this;
    	}
    	add( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
    			return this.addVectors( v, w );
    		}
    		this.x += v.x;
    		this.y += v.y;
    		this.z += v.z;
    		this.w += v.w;
    		return this;
    	}
    	addScalar( s ) {
    		this.x += s;
    		this.y += s;
    		this.z += s;
    		this.w += s;
    		return this;
    	}
    	addVectors( a, b ) {
    		this.x = a.x + b.x;
    		this.y = a.y + b.y;
    		this.z = a.z + b.z;
    		this.w = a.w + b.w;
    		return this;
    	}
    	addScaledVector( v, s ) {
    		this.x += v.x * s;
    		this.y += v.y * s;
    		this.z += v.z * s;
    		this.w += v.w * s;
    		return this;
    	}
    	sub( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
    			return this.subVectors( v, w );
    		}
    		this.x -= v.x;
    		this.y -= v.y;
    		this.z -= v.z;
    		this.w -= v.w;
    		return this;
    	}
    	subScalar( s ) {
    		this.x -= s;
    		this.y -= s;
    		this.z -= s;
    		this.w -= s;
    		return this;
    	}
    	subVectors( a, b ) {
    		this.x = a.x - b.x;
    		this.y = a.y - b.y;
    		this.z = a.z - b.z;
    		this.w = a.w - b.w;
    		return this;
    	}
    	multiplyScalar( scalar ) {
    		this.x *= scalar;
    		this.y *= scalar;
    		this.z *= scalar;
    		this.w *= scalar;
    		return this;
    	}
    	applyMatrix4( m ) {
    		const x = this.x, y = this.y, z = this.z, w = this.w;
    		const e = m.elements;
    		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
    		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
    		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
    		this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;
    		return this;
    	}
    	divideScalar( scalar ) {
    		return this.multiplyScalar( 1 / scalar );
    	}
    	setAxisAngleFromQuaternion( q ) {
    		this.w = 2 * Math.acos( q.w );
    		const s = Math.sqrt( 1 - q.w * q.w );
    		if ( s < 0.0001 ) {
    			this.x = 1;
    			this.y = 0;
    			this.z = 0;
    		} else {
    			this.x = q.x / s;
    			this.y = q.y / s;
    			this.z = q.z / s;
    		}
    		return this;
    	}
    	setAxisAngleFromRotationMatrix( m ) {
    		let angle, x, y, z;
    		const epsilon = 0.01,
    			epsilon2 = 0.1,
    			te = m.elements,
    			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
    			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
    			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
    		if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
    		     ( Math.abs( m13 - m31 ) < epsilon ) &&
    		     ( Math.abs( m23 - m32 ) < epsilon ) ) {
    			if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
    			     ( Math.abs( m13 + m31 ) < epsilon2 ) &&
    			     ( Math.abs( m23 + m32 ) < epsilon2 ) &&
    			     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {
    				this.set( 1, 0, 0, 0 );
    				return this;
    			}
    			angle = Math.PI;
    			const xx = ( m11 + 1 ) / 2;
    			const yy = ( m22 + 1 ) / 2;
    			const zz = ( m33 + 1 ) / 2;
    			const xy = ( m12 + m21 ) / 4;
    			const xz = ( m13 + m31 ) / 4;
    			const yz = ( m23 + m32 ) / 4;
    			if ( ( xx > yy ) && ( xx > zz ) ) {
    				if ( xx < epsilon ) {
    					x = 0;
    					y = 0.707106781;
    					z = 0.707106781;
    				} else {
    					x = Math.sqrt( xx );
    					y = xy / x;
    					z = xz / x;
    				}
    			} else if ( yy > zz ) {
    				if ( yy < epsilon ) {
    					x = 0.707106781;
    					y = 0;
    					z = 0.707106781;
    				} else {
    					y = Math.sqrt( yy );
    					x = xy / y;
    					z = yz / y;
    				}
    			} else {
    				if ( zz < epsilon ) {
    					x = 0.707106781;
    					y = 0.707106781;
    					z = 0;
    				} else {
    					z = Math.sqrt( zz );
    					x = xz / z;
    					y = yz / z;
    				}
    			}
    			this.set( x, y, z, angle );
    			return this;
    		}
    		let s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
    			( m13 - m31 ) * ( m13 - m31 ) +
    			( m21 - m12 ) * ( m21 - m12 ) );
    		if ( Math.abs( s ) < 0.001 ) s = 1;
    		this.x = ( m32 - m23 ) / s;
    		this.y = ( m13 - m31 ) / s;
    		this.z = ( m21 - m12 ) / s;
    		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );
    		return this;
    	}
    	min( v ) {
    		this.x = Math.min( this.x, v.x );
    		this.y = Math.min( this.y, v.y );
    		this.z = Math.min( this.z, v.z );
    		this.w = Math.min( this.w, v.w );
    		return this;
    	}
    	max( v ) {
    		this.x = Math.max( this.x, v.x );
    		this.y = Math.max( this.y, v.y );
    		this.z = Math.max( this.z, v.z );
    		this.w = Math.max( this.w, v.w );
    		return this;
    	}
    	clamp( min, max ) {
    		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
    		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
    		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
    		this.w = Math.max( min.w, Math.min( max.w, this.w ) );
    		return this;
    	}
    	clampScalar( minVal, maxVal ) {
    		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
    		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
    		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
    		this.w = Math.max( minVal, Math.min( maxVal, this.w ) );
    		return this;
    	}
    	clampLength( min, max ) {
    		const length = this.length();
    		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
    	}
    	floor() {
    		this.x = Math.floor( this.x );
    		this.y = Math.floor( this.y );
    		this.z = Math.floor( this.z );
    		this.w = Math.floor( this.w );
    		return this;
    	}
    	ceil() {
    		this.x = Math.ceil( this.x );
    		this.y = Math.ceil( this.y );
    		this.z = Math.ceil( this.z );
    		this.w = Math.ceil( this.w );
    		return this;
    	}
    	round() {
    		this.x = Math.round( this.x );
    		this.y = Math.round( this.y );
    		this.z = Math.round( this.z );
    		this.w = Math.round( this.w );
    		return this;
    	}
    	roundToZero() {
    		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
    		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
    		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
    		this.w = ( this.w < 0 ) ? Math.ceil( this.w ) : Math.floor( this.w );
    		return this;
    	}
    	negate() {
    		this.x = - this.x;
    		this.y = - this.y;
    		this.z = - this.z;
    		this.w = - this.w;
    		return this;
    	}
    	dot( v ) {
    		return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
    	}
    	lengthSq() {
    		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
    	}
    	length() {
    		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );
    	}
    	manhattanLength() {
    		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );
    	}
    	normalize() {
    		return this.divideScalar( this.length() || 1 );
    	}
    	setLength( length ) {
    		return this.normalize().multiplyScalar( length );
    	}
    	lerp( v, alpha ) {
    		this.x += ( v.x - this.x ) * alpha;
    		this.y += ( v.y - this.y ) * alpha;
    		this.z += ( v.z - this.z ) * alpha;
    		this.w += ( v.w - this.w ) * alpha;
    		return this;
    	}
    	lerpVectors( v1, v2, alpha ) {
    		this.x = v1.x + ( v2.x - v1.x ) * alpha;
    		this.y = v1.y + ( v2.y - v1.y ) * alpha;
    		this.z = v1.z + ( v2.z - v1.z ) * alpha;
    		this.w = v1.w + ( v2.w - v1.w ) * alpha;
    		return this;
    	}
    	equals( v ) {
    		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this.x = array[ offset ];
    		this.y = array[ offset + 1 ];
    		this.z = array[ offset + 2 ];
    		this.w = array[ offset + 3 ];
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this.x;
    		array[ offset + 1 ] = this.y;
    		array[ offset + 2 ] = this.z;
    		array[ offset + 3 ] = this.w;
    		return array;
    	}
    	fromBufferAttribute( attribute, index, offset ) {
    		if ( offset !== undefined ) {
    			console.warn( 'THREE.Vector4: offset has been removed from .fromBufferAttribute().' );
    		}
    		this.x = attribute.getX( index );
    		this.y = attribute.getY( index );
    		this.z = attribute.getZ( index );
    		this.w = attribute.getW( index );
    		return this;
    	}
    	random() {
    		this.x = Math.random();
    		this.y = Math.random();
    		this.z = Math.random();
    		this.w = Math.random();
    		return this;
    	}
    }
    function WebGLRenderTarget( width, height, options ) {
    	this.width = width;
    	this.height = height;
    	this.scissor = new Vector4( 0, 0, width, height );
    	this.scissorTest = false;
    	this.viewport = new Vector4( 0, 0, width, height );
    	options = options || {};
    	this.texture = new Texture( undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding );
    	this.texture.image = {};
    	this.texture.image.width = width;
    	this.texture.image.height = height;
    	this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
    	this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
    	this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
    	this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;
    	this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;
    }
    WebGLRenderTarget.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
    	constructor: WebGLRenderTarget,
    	isWebGLRenderTarget: true,
    	setSize: function ( width, height ) {
    		if ( this.width !== width || this.height !== height ) {
    			this.width = width;
    			this.height = height;
    			this.texture.image.width = width;
    			this.texture.image.height = height;
    			this.dispose();
    		}
    		this.viewport.set( 0, 0, width, height );
    		this.scissor.set( 0, 0, width, height );
    	},
    	clone: function () {
    		return new this.constructor().copy( this );
    	},
    	copy: function ( source ) {
    		this.width = source.width;
    		this.height = source.height;
    		this.viewport.copy( source.viewport );
    		this.texture = source.texture.clone();
    		this.depthBuffer = source.depthBuffer;
    		this.stencilBuffer = source.stencilBuffer;
    		this.depthTexture = source.depthTexture;
    		return this;
    	},
    	dispose: function () {
    		this.dispatchEvent( { type: 'dispose' } );
    	}
    } );
    function WebGLMultisampleRenderTarget( width, height, options ) {
    	WebGLRenderTarget.call( this, width, height, options );
    	this.samples = 4;
    }
    WebGLMultisampleRenderTarget.prototype = Object.assign( Object.create( WebGLRenderTarget.prototype ), {
    	constructor: WebGLMultisampleRenderTarget,
    	isWebGLMultisampleRenderTarget: true,
    	copy: function ( source ) {
    		WebGLRenderTarget.prototype.copy.call( this, source );
    		this.samples = source.samples;
    		return this;
    	}
    } );
    class Quaternion {
    	constructor( x = 0, y = 0, z = 0, w = 1 ) {
    		Object.defineProperty( this, 'isQuaternion', { value: true } );
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._w = w;
    	}
    	static slerp( qa, qb, qm, t ) {
    		return qm.copy( qa ).slerp( qb, t );
    	}
    	static slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {
    		let x0 = src0[ srcOffset0 + 0 ],
    			y0 = src0[ srcOffset0 + 1 ],
    			z0 = src0[ srcOffset0 + 2 ],
    			w0 = src0[ srcOffset0 + 3 ];
    		const x1 = src1[ srcOffset1 + 0 ],
    			y1 = src1[ srcOffset1 + 1 ],
    			z1 = src1[ srcOffset1 + 2 ],
    			w1 = src1[ srcOffset1 + 3 ];
    		if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {
    			let s = 1 - t;
    			const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
    				dir = ( cos >= 0 ? 1 : - 1 ),
    				sqrSin = 1 - cos * cos;
    			if ( sqrSin > Number.EPSILON ) {
    				const sin = Math.sqrt( sqrSin ),
    					len = Math.atan2( sin, cos * dir );
    				s = Math.sin( s * len ) / sin;
    				t = Math.sin( t * len ) / sin;
    			}
    			const tDir = t * dir;
    			x0 = x0 * s + x1 * tDir;
    			y0 = y0 * s + y1 * tDir;
    			z0 = z0 * s + z1 * tDir;
    			w0 = w0 * s + w1 * tDir;
    			if ( s === 1 - t ) {
    				const f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );
    				x0 *= f;
    				y0 *= f;
    				z0 *= f;
    				w0 *= f;
    			}
    		}
    		dst[ dstOffset ] = x0;
    		dst[ dstOffset + 1 ] = y0;
    		dst[ dstOffset + 2 ] = z0;
    		dst[ dstOffset + 3 ] = w0;
    	}
    	static multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {
    		const x0 = src0[ srcOffset0 ];
    		const y0 = src0[ srcOffset0 + 1 ];
    		const z0 = src0[ srcOffset0 + 2 ];
    		const w0 = src0[ srcOffset0 + 3 ];
    		const x1 = src1[ srcOffset1 ];
    		const y1 = src1[ srcOffset1 + 1 ];
    		const z1 = src1[ srcOffset1 + 2 ];
    		const w1 = src1[ srcOffset1 + 3 ];
    		dst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
    		dst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
    		dst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
    		dst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
    		return dst;
    	}
    	get x() {
    		return this._x;
    	}
    	set x( value ) {
    		this._x = value;
    		this._onChangeCallback();
    	}
    	get y() {
    		return this._y;
    	}
    	set y( value ) {
    		this._y = value;
    		this._onChangeCallback();
    	}
    	get z() {
    		return this._z;
    	}
    	set z( value ) {
    		this._z = value;
    		this._onChangeCallback();
    	}
    	get w() {
    		return this._w;
    	}
    	set w( value ) {
    		this._w = value;
    		this._onChangeCallback();
    	}
    	set( x, y, z, w ) {
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._w = w;
    		this._onChangeCallback();
    		return this;
    	}
    	clone() {
    		return new this.constructor( this._x, this._y, this._z, this._w );
    	}
    	copy( quaternion ) {
    		this._x = quaternion.x;
    		this._y = quaternion.y;
    		this._z = quaternion.z;
    		this._w = quaternion.w;
    		this._onChangeCallback();
    		return this;
    	}
    	setFromEuler( euler, update ) {
    		if ( ! ( euler && euler.isEuler ) ) {
    			throw new Error( 'THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.' );
    		}
    		const x = euler._x, y = euler._y, z = euler._z, order = euler._order;
    		const cos = Math.cos;
    		const sin = Math.sin;
    		const c1 = cos( x / 2 );
    		const c2 = cos( y / 2 );
    		const c3 = cos( z / 2 );
    		const s1 = sin( x / 2 );
    		const s2 = sin( y / 2 );
    		const s3 = sin( z / 2 );
    		switch ( order ) {
    			case 'XYZ':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;
    			case 'YXZ':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;
    			case 'ZXY':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;
    			case 'ZYX':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;
    			case 'YZX':
    				this._x = s1 * c2 * c3 + c1 * s2 * s3;
    				this._y = c1 * s2 * c3 + s1 * c2 * s3;
    				this._z = c1 * c2 * s3 - s1 * s2 * c3;
    				this._w = c1 * c2 * c3 - s1 * s2 * s3;
    				break;
    			case 'XZY':
    				this._x = s1 * c2 * c3 - c1 * s2 * s3;
    				this._y = c1 * s2 * c3 - s1 * c2 * s3;
    				this._z = c1 * c2 * s3 + s1 * s2 * c3;
    				this._w = c1 * c2 * c3 + s1 * s2 * s3;
    				break;
    			default:
    				console.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );
    		}
    		if ( update !== false ) this._onChangeCallback();
    		return this;
    	}
    	setFromAxisAngle( axis, angle ) {
    		const halfAngle = angle / 2, s = Math.sin( halfAngle );
    		this._x = axis.x * s;
    		this._y = axis.y * s;
    		this._z = axis.z * s;
    		this._w = Math.cos( halfAngle );
    		this._onChangeCallback();
    		return this;
    	}
    	setFromRotationMatrix( m ) {
    		const te = m.elements,
    			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
    			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
    			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],
    			trace = m11 + m22 + m33;
    		if ( trace > 0 ) {
    			const s = 0.5 / Math.sqrt( trace + 1.0 );
    			this._w = 0.25 / s;
    			this._x = ( m32 - m23 ) * s;
    			this._y = ( m13 - m31 ) * s;
    			this._z = ( m21 - m12 ) * s;
    		} else if ( m11 > m22 && m11 > m33 ) {
    			const s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );
    			this._w = ( m32 - m23 ) / s;
    			this._x = 0.25 * s;
    			this._y = ( m12 + m21 ) / s;
    			this._z = ( m13 + m31 ) / s;
    		} else if ( m22 > m33 ) {
    			const s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );
    			this._w = ( m13 - m31 ) / s;
    			this._x = ( m12 + m21 ) / s;
    			this._y = 0.25 * s;
    			this._z = ( m23 + m32 ) / s;
    		} else {
    			const s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );
    			this._w = ( m21 - m12 ) / s;
    			this._x = ( m13 + m31 ) / s;
    			this._y = ( m23 + m32 ) / s;
    			this._z = 0.25 * s;
    		}
    		this._onChangeCallback();
    		return this;
    	}
    	setFromUnitVectors( vFrom, vTo ) {
    		const EPS = 0.000001;
    		let r = vFrom.dot( vTo ) + 1;
    		if ( r < EPS ) {
    			r = 0;
    			if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {
    				this._x = - vFrom.y;
    				this._y = vFrom.x;
    				this._z = 0;
    				this._w = r;
    			} else {
    				this._x = 0;
    				this._y = - vFrom.z;
    				this._z = vFrom.y;
    				this._w = r;
    			}
    		} else {
    			this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
    			this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
    			this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
    			this._w = r;
    		}
    		return this.normalize();
    	}
    	angleTo( q ) {
    		return 2 * Math.acos( Math.abs( MathUtils.clamp( this.dot( q ), - 1, 1 ) ) );
    	}
    	rotateTowards( q, step ) {
    		const angle = this.angleTo( q );
    		if ( angle === 0 ) return this;
    		const t = Math.min( 1, step / angle );
    		this.slerp( q, t );
    		return this;
    	}
    	identity() {
    		return this.set( 0, 0, 0, 1 );
    	}
    	inverse() {
    		return this.conjugate();
    	}
    	conjugate() {
    		this._x *= - 1;
    		this._y *= - 1;
    		this._z *= - 1;
    		this._onChangeCallback();
    		return this;
    	}
    	dot( v ) {
    		return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
    	}
    	lengthSq() {
    		return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
    	}
    	length() {
    		return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );
    	}
    	normalize() {
    		let l = this.length();
    		if ( l === 0 ) {
    			this._x = 0;
    			this._y = 0;
    			this._z = 0;
    			this._w = 1;
    		} else {
    			l = 1 / l;
    			this._x = this._x * l;
    			this._y = this._y * l;
    			this._z = this._z * l;
    			this._w = this._w * l;
    		}
    		this._onChangeCallback();
    		return this;
    	}
    	multiply( q, p ) {
    		if ( p !== undefined ) {
    			console.warn( 'THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.' );
    			return this.multiplyQuaternions( q, p );
    		}
    		return this.multiplyQuaternions( this, q );
    	}
    	premultiply( q ) {
    		return this.multiplyQuaternions( q, this );
    	}
    	multiplyQuaternions( a, b ) {
    		const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
    		const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;
    		this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
    		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
    		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
    		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
    		this._onChangeCallback();
    		return this;
    	}
    	slerp( qb, t ) {
    		if ( t === 0 ) return this;
    		if ( t === 1 ) return this.copy( qb );
    		const x = this._x, y = this._y, z = this._z, w = this._w;
    		let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
    		if ( cosHalfTheta < 0 ) {
    			this._w = - qb._w;
    			this._x = - qb._x;
    			this._y = - qb._y;
    			this._z = - qb._z;
    			cosHalfTheta = - cosHalfTheta;
    		} else {
    			this.copy( qb );
    		}
    		if ( cosHalfTheta >= 1.0 ) {
    			this._w = w;
    			this._x = x;
    			this._y = y;
    			this._z = z;
    			return this;
    		}
    		const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;
    		if ( sqrSinHalfTheta <= Number.EPSILON ) {
    			const s = 1 - t;
    			this._w = s * w + t * this._w;
    			this._x = s * x + t * this._x;
    			this._y = s * y + t * this._y;
    			this._z = s * z + t * this._z;
    			this.normalize();
    			this._onChangeCallback();
    			return this;
    		}
    		const sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
    		const halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
    		const ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
    			ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;
    		this._w = ( w * ratioA + this._w * ratioB );
    		this._x = ( x * ratioA + this._x * ratioB );
    		this._y = ( y * ratioA + this._y * ratioB );
    		this._z = ( z * ratioA + this._z * ratioB );
    		this._onChangeCallback();
    		return this;
    	}
    	equals( quaternion ) {
    		return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this._x = array[ offset ];
    		this._y = array[ offset + 1 ];
    		this._z = array[ offset + 2 ];
    		this._w = array[ offset + 3 ];
    		this._onChangeCallback();
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this._x;
    		array[ offset + 1 ] = this._y;
    		array[ offset + 2 ] = this._z;
    		array[ offset + 3 ] = this._w;
    		return array;
    	}
    	fromBufferAttribute( attribute, index ) {
    		this._x = attribute.getX( index );
    		this._y = attribute.getY( index );
    		this._z = attribute.getZ( index );
    		this._w = attribute.getW( index );
    		return this;
    	}
    	_onChange( callback ) {
    		this._onChangeCallback = callback;
    		return this;
    	}
    	_onChangeCallback() {}
    }
    class Vector3 {
    	constructor( x = 0, y = 0, z = 0 ) {
    		Object.defineProperty( this, 'isVector3', { value: true } );
    		this.x = x;
    		this.y = y;
    		this.z = z;
    	}
    	set( x, y, z ) {
    		if ( z === undefined ) z = this.z;
    		this.x = x;
    		this.y = y;
    		this.z = z;
    		return this;
    	}
    	setScalar( scalar ) {
    		this.x = scalar;
    		this.y = scalar;
    		this.z = scalar;
    		return this;
    	}
    	setX( x ) {
    		this.x = x;
    		return this;
    	}
    	setY( y ) {
    		this.y = y;
    		return this;
    	}
    	setZ( z ) {
    		this.z = z;
    		return this;
    	}
    	setComponent( index, value ) {
    		switch ( index ) {
    			case 0: this.x = value; break;
    			case 1: this.y = value; break;
    			case 2: this.z = value; break;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    		return this;
    	}
    	getComponent( index ) {
    		switch ( index ) {
    			case 0: return this.x;
    			case 1: return this.y;
    			case 2: return this.z;
    			default: throw new Error( 'index is out of range: ' + index );
    		}
    	}
    	clone() {
    		return new this.constructor( this.x, this.y, this.z );
    	}
    	copy( v ) {
    		this.x = v.x;
    		this.y = v.y;
    		this.z = v.z;
    		return this;
    	}
    	add( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' );
    			return this.addVectors( v, w );
    		}
    		this.x += v.x;
    		this.y += v.y;
    		this.z += v.z;
    		return this;
    	}
    	addScalar( s ) {
    		this.x += s;
    		this.y += s;
    		this.z += s;
    		return this;
    	}
    	addVectors( a, b ) {
    		this.x = a.x + b.x;
    		this.y = a.y + b.y;
    		this.z = a.z + b.z;
    		return this;
    	}
    	addScaledVector( v, s ) {
    		this.x += v.x * s;
    		this.y += v.y * s;
    		this.z += v.z * s;
    		return this;
    	}
    	sub( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' );
    			return this.subVectors( v, w );
    		}
    		this.x -= v.x;
    		this.y -= v.y;
    		this.z -= v.z;
    		return this;
    	}
    	subScalar( s ) {
    		this.x -= s;
    		this.y -= s;
    		this.z -= s;
    		return this;
    	}
    	subVectors( a, b ) {
    		this.x = a.x - b.x;
    		this.y = a.y - b.y;
    		this.z = a.z - b.z;
    		return this;
    	}
    	multiply( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.' );
    			return this.multiplyVectors( v, w );
    		}
    		this.x *= v.x;
    		this.y *= v.y;
    		this.z *= v.z;
    		return this;
    	}
    	multiplyScalar( scalar ) {
    		this.x *= scalar;
    		this.y *= scalar;
    		this.z *= scalar;
    		return this;
    	}
    	multiplyVectors( a, b ) {
    		this.x = a.x * b.x;
    		this.y = a.y * b.y;
    		this.z = a.z * b.z;
    		return this;
    	}
    	applyEuler( euler ) {
    		if ( ! ( euler && euler.isEuler ) ) {
    			console.error( 'THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.' );
    		}
    		return this.applyQuaternion( _quaternion.setFromEuler( euler ) );
    	}
    	applyAxisAngle( axis, angle ) {
    		return this.applyQuaternion( _quaternion.setFromAxisAngle( axis, angle ) );
    	}
    	applyMatrix3( m ) {
    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;
    		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
    		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
    		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;
    		return this;
    	}
    	applyNormalMatrix( m ) {
    		return this.applyMatrix3( m ).normalize();
    	}
    	applyMatrix4( m ) {
    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;
    		const w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );
    		this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
    		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
    		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;
    		return this;
    	}
    	applyQuaternion( q ) {
    		const x = this.x, y = this.y, z = this.z;
    		const qx = q.x, qy = q.y, qz = q.z, qw = q.w;
    		const ix = qw * x + qy * z - qz * y;
    		const iy = qw * y + qz * x - qx * z;
    		const iz = qw * z + qx * y - qy * x;
    		const iw = - qx * x - qy * y - qz * z;
    		this.x = ix * qw + iw * - qx + iy * - qz - iz * - qy;
    		this.y = iy * qw + iw * - qy + iz * - qx - ix * - qz;
    		this.z = iz * qw + iw * - qz + ix * - qy - iy * - qx;
    		return this;
    	}
    	project( camera ) {
    		return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );
    	}
    	unproject( camera ) {
    		return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );
    	}
    	transformDirection( m ) {
    		const x = this.x, y = this.y, z = this.z;
    		const e = m.elements;
    		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
    		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
    		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;
    		return this.normalize();
    	}
    	divide( v ) {
    		this.x /= v.x;
    		this.y /= v.y;
    		this.z /= v.z;
    		return this;
    	}
    	divideScalar( scalar ) {
    		return this.multiplyScalar( 1 / scalar );
    	}
    	min( v ) {
    		this.x = Math.min( this.x, v.x );
    		this.y = Math.min( this.y, v.y );
    		this.z = Math.min( this.z, v.z );
    		return this;
    	}
    	max( v ) {
    		this.x = Math.max( this.x, v.x );
    		this.y = Math.max( this.y, v.y );
    		this.z = Math.max( this.z, v.z );
    		return this;
    	}
    	clamp( min, max ) {
    		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
    		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
    		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
    		return this;
    	}
    	clampScalar( minVal, maxVal ) {
    		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
    		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
    		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
    		return this;
    	}
    	clampLength( min, max ) {
    		const length = this.length();
    		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
    	}
    	floor() {
    		this.x = Math.floor( this.x );
    		this.y = Math.floor( this.y );
    		this.z = Math.floor( this.z );
    		return this;
    	}
    	ceil() {
    		this.x = Math.ceil( this.x );
    		this.y = Math.ceil( this.y );
    		this.z = Math.ceil( this.z );
    		return this;
    	}
    	round() {
    		this.x = Math.round( this.x );
    		this.y = Math.round( this.y );
    		this.z = Math.round( this.z );
    		return this;
    	}
    	roundToZero() {
    		this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x );
    		this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y );
    		this.z = ( this.z < 0 ) ? Math.ceil( this.z ) : Math.floor( this.z );
    		return this;
    	}
    	negate() {
    		this.x = - this.x;
    		this.y = - this.y;
    		this.z = - this.z;
    		return this;
    	}
    	dot( v ) {
    		return this.x * v.x + this.y * v.y + this.z * v.z;
    	}
    	lengthSq() {
    		return this.x * this.x + this.y * this.y + this.z * this.z;
    	}
    	length() {
    		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );
    	}
    	manhattanLength() {
    		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );
    	}
    	normalize() {
    		return this.divideScalar( this.length() || 1 );
    	}
    	setLength( length ) {
    		return this.normalize().multiplyScalar( length );
    	}
    	lerp( v, alpha ) {
    		this.x += ( v.x - this.x ) * alpha;
    		this.y += ( v.y - this.y ) * alpha;
    		this.z += ( v.z - this.z ) * alpha;
    		return this;
    	}
    	lerpVectors( v1, v2, alpha ) {
    		this.x = v1.x + ( v2.x - v1.x ) * alpha;
    		this.y = v1.y + ( v2.y - v1.y ) * alpha;
    		this.z = v1.z + ( v2.z - v1.z ) * alpha;
    		return this;
    	}
    	cross( v, w ) {
    		if ( w !== undefined ) {
    			console.warn( 'THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.' );
    			return this.crossVectors( v, w );
    		}
    		return this.crossVectors( this, v );
    	}
    	crossVectors( a, b ) {
    		const ax = a.x, ay = a.y, az = a.z;
    		const bx = b.x, by = b.y, bz = b.z;
    		this.x = ay * bz - az * by;
    		this.y = az * bx - ax * bz;
    		this.z = ax * by - ay * bx;
    		return this;
    	}
    	projectOnVector( v ) {
    		const denominator = v.lengthSq();
    		if ( denominator === 0 ) return this.set( 0, 0, 0 );
    		const scalar = v.dot( this ) / denominator;
    		return this.copy( v ).multiplyScalar( scalar );
    	}
    	projectOnPlane( planeNormal ) {
    		_vector.copy( this ).projectOnVector( planeNormal );
    		return this.sub( _vector );
    	}
    	reflect( normal ) {
    		return this.sub( _vector.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );
    	}
    	angleTo( v ) {
    		const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );
    		if ( denominator === 0 ) return Math.PI / 2;
    		const theta = this.dot( v ) / denominator;
    		return Math.acos( MathUtils.clamp( theta, - 1, 1 ) );
    	}
    	distanceTo( v ) {
    		return Math.sqrt( this.distanceToSquared( v ) );
    	}
    	distanceToSquared( v ) {
    		const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
    		return dx * dx + dy * dy + dz * dz;
    	}
    	manhattanDistanceTo( v ) {
    		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );
    	}
    	setFromSpherical( s ) {
    		return this.setFromSphericalCoords( s.radius, s.phi, s.theta );
    	}
    	setFromSphericalCoords( radius, phi, theta ) {
    		const sinPhiRadius = Math.sin( phi ) * radius;
    		this.x = sinPhiRadius * Math.sin( theta );
    		this.y = Math.cos( phi ) * radius;
    		this.z = sinPhiRadius * Math.cos( theta );
    		return this;
    	}
    	setFromCylindrical( c ) {
    		return this.setFromCylindricalCoords( c.radius, c.theta, c.y );
    	}
    	setFromCylindricalCoords( radius, theta, y ) {
    		this.x = radius * Math.sin( theta );
    		this.y = y;
    		this.z = radius * Math.cos( theta );
    		return this;
    	}
    	setFromMatrixPosition( m ) {
    		const e = m.elements;
    		this.x = e[ 12 ];
    		this.y = e[ 13 ];
    		this.z = e[ 14 ];
    		return this;
    	}
    	setFromMatrixScale( m ) {
    		const sx = this.setFromMatrixColumn( m, 0 ).length();
    		const sy = this.setFromMatrixColumn( m, 1 ).length();
    		const sz = this.setFromMatrixColumn( m, 2 ).length();
    		this.x = sx;
    		this.y = sy;
    		this.z = sz;
    		return this;
    	}
    	setFromMatrixColumn( m, index ) {
    		return this.fromArray( m.elements, index * 4 );
    	}
    	setFromMatrix3Column( m, index ) {
    		return this.fromArray( m.elements, index * 3 );
    	}
    	equals( v ) {
    		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this.x = array[ offset ];
    		this.y = array[ offset + 1 ];
    		this.z = array[ offset + 2 ];
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this.x;
    		array[ offset + 1 ] = this.y;
    		array[ offset + 2 ] = this.z;
    		return array;
    	}
    	fromBufferAttribute( attribute, index, offset ) {
    		if ( offset !== undefined ) {
    			console.warn( 'THREE.Vector3: offset has been removed from .fromBufferAttribute().' );
    		}
    		this.x = attribute.getX( index );
    		this.y = attribute.getY( index );
    		this.z = attribute.getZ( index );
    		return this;
    	}
    	random() {
    		this.x = Math.random();
    		this.y = Math.random();
    		this.z = Math.random();
    		return this;
    	}
    }
    const _vector = new Vector3();
    const _quaternion = new Quaternion();
    class Box3 {
    	constructor( min, max ) {
    		Object.defineProperty( this, 'isBox3', { value: true } );
    		this.min = ( min !== undefined ) ? min : new Vector3( + Infinity, + Infinity, + Infinity );
    		this.max = ( max !== undefined ) ? max : new Vector3( - Infinity, - Infinity, - Infinity );
    	}
    	set( min, max ) {
    		this.min.copy( min );
    		this.max.copy( max );
    		return this;
    	}
    	setFromArray( array ) {
    		let minX = + Infinity;
    		let minY = + Infinity;
    		let minZ = + Infinity;
    		let maxX = - Infinity;
    		let maxY = - Infinity;
    		let maxZ = - Infinity;
    		for ( let i = 0, l = array.length; i < l; i += 3 ) {
    			const x = array[ i ];
    			const y = array[ i + 1 ];
    			const z = array[ i + 2 ];
    			if ( x < minX ) minX = x;
    			if ( y < minY ) minY = y;
    			if ( z < minZ ) minZ = z;
    			if ( x > maxX ) maxX = x;
    			if ( y > maxY ) maxY = y;
    			if ( z > maxZ ) maxZ = z;
    		}
    		this.min.set( minX, minY, minZ );
    		this.max.set( maxX, maxY, maxZ );
    		return this;
    	}
    	setFromBufferAttribute( attribute ) {
    		let minX = + Infinity;
    		let minY = + Infinity;
    		let minZ = + Infinity;
    		let maxX = - Infinity;
    		let maxY = - Infinity;
    		let maxZ = - Infinity;
    		for ( let i = 0, l = attribute.count; i < l; i ++ ) {
    			const x = attribute.getX( i );
    			const y = attribute.getY( i );
    			const z = attribute.getZ( i );
    			if ( x < minX ) minX = x;
    			if ( y < minY ) minY = y;
    			if ( z < minZ ) minZ = z;
    			if ( x > maxX ) maxX = x;
    			if ( y > maxY ) maxY = y;
    			if ( z > maxZ ) maxZ = z;
    		}
    		this.min.set( minX, minY, minZ );
    		this.max.set( maxX, maxY, maxZ );
    		return this;
    	}
    	setFromPoints( points ) {
    		this.makeEmpty();
    		for ( let i = 0, il = points.length; i < il; i ++ ) {
    			this.expandByPoint( points[ i ] );
    		}
    		return this;
    	}
    	setFromCenterAndSize( center, size ) {
    		const halfSize = _vector$1.copy( size ).multiplyScalar( 0.5 );
    		this.min.copy( center ).sub( halfSize );
    		this.max.copy( center ).add( halfSize );
    		return this;
    	}
    	setFromObject( object ) {
    		this.makeEmpty();
    		return this.expandByObject( object );
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( box ) {
    		this.min.copy( box.min );
    		this.max.copy( box.max );
    		return this;
    	}
    	makeEmpty() {
    		this.min.x = this.min.y = this.min.z = + Infinity;
    		this.max.x = this.max.y = this.max.z = - Infinity;
    		return this;
    	}
    	isEmpty() {
    		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );
    	}
    	getCenter( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box3: .getCenter() target is now required' );
    			target = new Vector3();
    		}
    		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
    	}
    	getSize( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box3: .getSize() target is now required' );
    			target = new Vector3();
    		}
    		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );
    	}
    	expandByPoint( point ) {
    		this.min.min( point );
    		this.max.max( point );
    		return this;
    	}
    	expandByVector( vector ) {
    		this.min.sub( vector );
    		this.max.add( vector );
    		return this;
    	}
    	expandByScalar( scalar ) {
    		this.min.addScalar( - scalar );
    		this.max.addScalar( scalar );
    		return this;
    	}
    	expandByObject( object ) {
    		object.updateWorldMatrix( false, false );
    		const geometry = object.geometry;
    		if ( geometry !== undefined ) {
    			if ( geometry.boundingBox === null ) {
    				geometry.computeBoundingBox();
    			}
    			_box.copy( geometry.boundingBox );
    			_box.applyMatrix4( object.matrixWorld );
    			this.union( _box );
    		}
    		const children = object.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			this.expandByObject( children[ i ] );
    		}
    		return this;
    	}
    	containsPoint( point ) {
    		return point.x < this.min.x || point.x > this.max.x ||
    			point.y < this.min.y || point.y > this.max.y ||
    			point.z < this.min.z || point.z > this.max.z ? false : true;
    	}
    	containsBox( box ) {
    		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
    			this.min.y <= box.min.y && box.max.y <= this.max.y &&
    			this.min.z <= box.min.z && box.max.z <= this.max.z;
    	}
    	getParameter( point, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box3: .getParameter() target is now required' );
    			target = new Vector3();
    		}
    		return target.set(
    			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
    			( point.y - this.min.y ) / ( this.max.y - this.min.y ),
    			( point.z - this.min.z ) / ( this.max.z - this.min.z )
    		);
    	}
    	intersectsBox( box ) {
    		return box.max.x < this.min.x || box.min.x > this.max.x ||
    			box.max.y < this.min.y || box.min.y > this.max.y ||
    			box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
    	}
    	intersectsSphere( sphere ) {
    		this.clampPoint( sphere.center, _vector$1 );
    		return _vector$1.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );
    	}
    	intersectsPlane( plane ) {
    		let min, max;
    		if ( plane.normal.x > 0 ) {
    			min = plane.normal.x * this.min.x;
    			max = plane.normal.x * this.max.x;
    		} else {
    			min = plane.normal.x * this.max.x;
    			max = plane.normal.x * this.min.x;
    		}
    		if ( plane.normal.y > 0 ) {
    			min += plane.normal.y * this.min.y;
    			max += plane.normal.y * this.max.y;
    		} else {
    			min += plane.normal.y * this.max.y;
    			max += plane.normal.y * this.min.y;
    		}
    		if ( plane.normal.z > 0 ) {
    			min += plane.normal.z * this.min.z;
    			max += plane.normal.z * this.max.z;
    		} else {
    			min += plane.normal.z * this.max.z;
    			max += plane.normal.z * this.min.z;
    		}
    		return ( min <= - plane.constant && max >= - plane.constant );
    	}
    	intersectsTriangle( triangle ) {
    		if ( this.isEmpty() ) {
    			return false;
    		}
    		this.getCenter( _center );
    		_extents.subVectors( this.max, _center );
    		_v0.subVectors( triangle.a, _center );
    		_v1.subVectors( triangle.b, _center );
    		_v2.subVectors( triangle.c, _center );
    		_f0.subVectors( _v1, _v0 );
    		_f1.subVectors( _v2, _v1 );
    		_f2.subVectors( _v0, _v2 );
    		let axes = [
    			0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,
    			_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,
    			- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0
    		];
    		if ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {
    			return false;
    		}
    		axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
    		if ( ! satForAxes( axes, _v0, _v1, _v2, _extents ) ) {
    			return false;
    		}
    		_triangleNormal.crossVectors( _f0, _f1 );
    		axes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];
    		return satForAxes( axes, _v0, _v1, _v2, _extents );
    	}
    	clampPoint( point, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box3: .clampPoint() target is now required' );
    			target = new Vector3();
    		}
    		return target.copy( point ).clamp( this.min, this.max );
    	}
    	distanceToPoint( point ) {
    		const clampedPoint = _vector$1.copy( point ).clamp( this.min, this.max );
    		return clampedPoint.sub( point ).length();
    	}
    	getBoundingSphere( target ) {
    		if ( target === undefined ) {
    			console.error( 'THREE.Box3: .getBoundingSphere() target is now required' );
    		}
    		this.getCenter( target.center );
    		target.radius = this.getSize( _vector$1 ).length() * 0.5;
    		return target;
    	}
    	intersect( box ) {
    		this.min.max( box.min );
    		this.max.min( box.max );
    		if ( this.isEmpty() ) this.makeEmpty();
    		return this;
    	}
    	union( box ) {
    		this.min.min( box.min );
    		this.max.max( box.max );
    		return this;
    	}
    	applyMatrix4( matrix ) {
    		if ( this.isEmpty() ) return this;
    		_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix );
    		_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix );
    		_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix );
    		_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix );
    		_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix );
    		_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix );
    		_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix );
    		_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix );
    		this.setFromPoints( _points );
    		return this;
    	}
    	translate( offset ) {
    		this.min.add( offset );
    		this.max.add( offset );
    		return this;
    	}
    	equals( box ) {
    		return box.min.equals( this.min ) && box.max.equals( this.max );
    	}
    }
    function satForAxes( axes, v0, v1, v2, extents ) {
    	for ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {
    		_testAxis.fromArray( axes, i );
    		const r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );
    		const p0 = v0.dot( _testAxis );
    		const p1 = v1.dot( _testAxis );
    		const p2 = v2.dot( _testAxis );
    		if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {
    			return false;
    		}
    	}
    	return true;
    }
    const _points = [
    	new Vector3(),
    	new Vector3(),
    	new Vector3(),
    	new Vector3(),
    	new Vector3(),
    	new Vector3(),
    	new Vector3(),
    	new Vector3()
    ];
    const _vector$1 = new Vector3();
    const _box = new Box3();
    const _v0 = new Vector3();
    const _v1 = new Vector3();
    const _v2 = new Vector3();
    const _f0 = new Vector3();
    const _f1 = new Vector3();
    const _f2 = new Vector3();
    const _center = new Vector3();
    const _extents = new Vector3();
    const _triangleNormal = new Vector3();
    const _testAxis = new Vector3();
    const _box$1 = new Box3();
    class Sphere {
    	constructor( center, radius ) {
    		this.center = ( center !== undefined ) ? center : new Vector3();
    		this.radius = ( radius !== undefined ) ? radius : - 1;
    	}
    	set( center, radius ) {
    		this.center.copy( center );
    		this.radius = radius;
    		return this;
    	}
    	setFromPoints( points, optionalCenter ) {
    		const center = this.center;
    		if ( optionalCenter !== undefined ) {
    			center.copy( optionalCenter );
    		} else {
    			_box$1.setFromPoints( points ).getCenter( center );
    		}
    		let maxRadiusSq = 0;
    		for ( let i = 0, il = points.length; i < il; i ++ ) {
    			maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );
    		}
    		this.radius = Math.sqrt( maxRadiusSq );
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( sphere ) {
    		this.center.copy( sphere.center );
    		this.radius = sphere.radius;
    		return this;
    	}
    	isEmpty() {
    		return ( this.radius < 0 );
    	}
    	makeEmpty() {
    		this.center.set( 0, 0, 0 );
    		this.radius = - 1;
    		return this;
    	}
    	containsPoint( point ) {
    		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );
    	}
    	distanceToPoint( point ) {
    		return ( point.distanceTo( this.center ) - this.radius );
    	}
    	intersectsSphere( sphere ) {
    		const radiusSum = this.radius + sphere.radius;
    		return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );
    	}
    	intersectsBox( box ) {
    		return box.intersectsSphere( this );
    	}
    	intersectsPlane( plane ) {
    		return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;
    	}
    	clampPoint( point, target ) {
    		const deltaLengthSq = this.center.distanceToSquared( point );
    		if ( target === undefined ) {
    			console.warn( 'THREE.Sphere: .clampPoint() target is now required' );
    			target = new Vector3();
    		}
    		target.copy( point );
    		if ( deltaLengthSq > ( this.radius * this.radius ) ) {
    			target.sub( this.center ).normalize();
    			target.multiplyScalar( this.radius ).add( this.center );
    		}
    		return target;
    	}
    	getBoundingBox( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Sphere: .getBoundingBox() target is now required' );
    			target = new Box3();
    		}
    		if ( this.isEmpty() ) {
    			target.makeEmpty();
    			return target;
    		}
    		target.set( this.center, this.center );
    		target.expandByScalar( this.radius );
    		return target;
    	}
    	applyMatrix4( matrix ) {
    		this.center.applyMatrix4( matrix );
    		this.radius = this.radius * matrix.getMaxScaleOnAxis();
    		return this;
    	}
    	translate( offset ) {
    		this.center.add( offset );
    		return this;
    	}
    	equals( sphere ) {
    		return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );
    	}
    }
    const _vector$2 = new Vector3();
    const _segCenter = new Vector3();
    const _segDir = new Vector3();
    const _diff = new Vector3();
    const _edge1 = new Vector3();
    const _edge2 = new Vector3();
    const _normal = new Vector3();
    class Ray {
    	constructor( origin, direction ) {
    		this.origin = ( origin !== undefined ) ? origin : new Vector3();
    		this.direction = ( direction !== undefined ) ? direction : new Vector3( 0, 0, - 1 );
    	}
    	set( origin, direction ) {
    		this.origin.copy( origin );
    		this.direction.copy( direction );
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( ray ) {
    		this.origin.copy( ray.origin );
    		this.direction.copy( ray.direction );
    		return this;
    	}
    	at( t, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Ray: .at() target is now required' );
    			target = new Vector3();
    		}
    		return target.copy( this.direction ).multiplyScalar( t ).add( this.origin );
    	}
    	lookAt( v ) {
    		this.direction.copy( v ).sub( this.origin ).normalize();
    		return this;
    	}
    	recast( t ) {
    		this.origin.copy( this.at( t, _vector$2 ) );
    		return this;
    	}
    	closestPointToPoint( point, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Ray: .closestPointToPoint() target is now required' );
    			target = new Vector3();
    		}
    		target.subVectors( point, this.origin );
    		const directionDistance = target.dot( this.direction );
    		if ( directionDistance < 0 ) {
    			return target.copy( this.origin );
    		}
    		return target.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
    	}
    	distanceToPoint( point ) {
    		return Math.sqrt( this.distanceSqToPoint( point ) );
    	}
    	distanceSqToPoint( point ) {
    		const directionDistance = _vector$2.subVectors( point, this.origin ).dot( this.direction );
    		if ( directionDistance < 0 ) {
    			return this.origin.distanceToSquared( point );
    		}
    		_vector$2.copy( this.direction ).multiplyScalar( directionDistance ).add( this.origin );
    		return _vector$2.distanceToSquared( point );
    	}
    	distanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {
    		_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
    		_segDir.copy( v1 ).sub( v0 ).normalize();
    		_diff.copy( this.origin ).sub( _segCenter );
    		const segExtent = v0.distanceTo( v1 ) * 0.5;
    		const a01 = - this.direction.dot( _segDir );
    		const b0 = _diff.dot( this.direction );
    		const b1 = - _diff.dot( _segDir );
    		const c = _diff.lengthSq();
    		const det = Math.abs( 1 - a01 * a01 );
    		let s0, s1, sqrDist, extDet;
    		if ( det > 0 ) {
    			s0 = a01 * b1 - b0;
    			s1 = a01 * b0 - b1;
    			extDet = segExtent * det;
    			if ( s0 >= 0 ) {
    				if ( s1 >= - extDet ) {
    					if ( s1 <= extDet ) {
    						const invDet = 1 / det;
    						s0 *= invDet;
    						s1 *= invDet;
    						sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;
    					} else {
    						s1 = segExtent;
    						s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
    						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
    					}
    				} else {
    					s1 = - segExtent;
    					s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
    					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
    				}
    			} else {
    				if ( s1 <= - extDet ) {
    					s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
    					s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
    					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
    				} else if ( s1 <= extDet ) {
    					s0 = 0;
    					s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
    					sqrDist = s1 * ( s1 + 2 * b1 ) + c;
    				} else {
    					s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
    					s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
    					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
    				}
    			}
    		} else {
    			s1 = ( a01 > 0 ) ? - segExtent : segExtent;
    			s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
    			sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
    		}
    		if ( optionalPointOnRay ) {
    			optionalPointOnRay.copy( this.direction ).multiplyScalar( s0 ).add( this.origin );
    		}
    		if ( optionalPointOnSegment ) {
    			optionalPointOnSegment.copy( _segDir ).multiplyScalar( s1 ).add( _segCenter );
    		}
    		return sqrDist;
    	}
    	intersectSphere( sphere, target ) {
    		_vector$2.subVectors( sphere.center, this.origin );
    		const tca = _vector$2.dot( this.direction );
    		const d2 = _vector$2.dot( _vector$2 ) - tca * tca;
    		const radius2 = sphere.radius * sphere.radius;
    		if ( d2 > radius2 ) return null;
    		const thc = Math.sqrt( radius2 - d2 );
    		const t0 = tca - thc;
    		const t1 = tca + thc;
    		if ( t0 < 0 && t1 < 0 ) return null;
    		if ( t0 < 0 ) return this.at( t1, target );
    		return this.at( t0, target );
    	}
    	intersectsSphere( sphere ) {
    		return this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );
    	}
    	distanceToPlane( plane ) {
    		const denominator = plane.normal.dot( this.direction );
    		if ( denominator === 0 ) {
    			if ( plane.distanceToPoint( this.origin ) === 0 ) {
    				return 0;
    			}
    			return null;
    		}
    		const t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;
    		return t >= 0 ? t : null;
    	}
    	intersectPlane( plane, target ) {
    		const t = this.distanceToPlane( plane );
    		if ( t === null ) {
    			return null;
    		}
    		return this.at( t, target );
    	}
    	intersectsPlane( plane ) {
    		const distToPoint = plane.distanceToPoint( this.origin );
    		if ( distToPoint === 0 ) {
    			return true;
    		}
    		const denominator = plane.normal.dot( this.direction );
    		if ( denominator * distToPoint < 0 ) {
    			return true;
    		}
    		return false;
    	}
    	intersectBox( box, target ) {
    		let tmin, tmax, tymin, tymax, tzmin, tzmax;
    		const invdirx = 1 / this.direction.x,
    			invdiry = 1 / this.direction.y,
    			invdirz = 1 / this.direction.z;
    		const origin = this.origin;
    		if ( invdirx >= 0 ) {
    			tmin = ( box.min.x - origin.x ) * invdirx;
    			tmax = ( box.max.x - origin.x ) * invdirx;
    		} else {
    			tmin = ( box.max.x - origin.x ) * invdirx;
    			tmax = ( box.min.x - origin.x ) * invdirx;
    		}
    		if ( invdiry >= 0 ) {
    			tymin = ( box.min.y - origin.y ) * invdiry;
    			tymax = ( box.max.y - origin.y ) * invdiry;
    		} else {
    			tymin = ( box.max.y - origin.y ) * invdiry;
    			tymax = ( box.min.y - origin.y ) * invdiry;
    		}
    		if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;
    		if ( tymin > tmin || tmin !== tmin ) tmin = tymin;
    		if ( tymax < tmax || tmax !== tmax ) tmax = tymax;
    		if ( invdirz >= 0 ) {
    			tzmin = ( box.min.z - origin.z ) * invdirz;
    			tzmax = ( box.max.z - origin.z ) * invdirz;
    		} else {
    			tzmin = ( box.max.z - origin.z ) * invdirz;
    			tzmax = ( box.min.z - origin.z ) * invdirz;
    		}
    		if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;
    		if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;
    		if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;
    		if ( tmax < 0 ) return null;
    		return this.at( tmin >= 0 ? tmin : tmax, target );
    	}
    	intersectsBox( box ) {
    		return this.intersectBox( box, _vector$2 ) !== null;
    	}
    	intersectTriangle( a, b, c, backfaceCulling, target ) {
    		_edge1.subVectors( b, a );
    		_edge2.subVectors( c, a );
    		_normal.crossVectors( _edge1, _edge2 );
    		let DdN = this.direction.dot( _normal );
    		let sign;
    		if ( DdN > 0 ) {
    			if ( backfaceCulling ) return null;
    			sign = 1;
    		} else if ( DdN < 0 ) {
    			sign = - 1;
    			DdN = - DdN;
    		} else {
    			return null;
    		}
    		_diff.subVectors( this.origin, a );
    		const DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );
    		if ( DdQxE2 < 0 ) {
    			return null;
    		}
    		const DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );
    		if ( DdE1xQ < 0 ) {
    			return null;
    		}
    		if ( DdQxE2 + DdE1xQ > DdN ) {
    			return null;
    		}
    		const QdN = - sign * _diff.dot( _normal );
    		if ( QdN < 0 ) {
    			return null;
    		}
    		return this.at( QdN / DdN, target );
    	}
    	applyMatrix4( matrix4 ) {
    		this.origin.applyMatrix4( matrix4 );
    		this.direction.transformDirection( matrix4 );
    		return this;
    	}
    	equals( ray ) {
    		return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );
    	}
    }
    class Matrix4 {
    	constructor() {
    		Object.defineProperty( this, 'isMatrix4', { value: true } );
    		this.elements = [
    			1, 0, 0, 0,
    			0, 1, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1
    		];
    		if ( arguments.length > 0 ) {
    			console.error( 'THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.' );
    		}
    	}
    	set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {
    		const te = this.elements;
    		te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
    		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
    		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
    		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;
    		return this;
    	}
    	identity() {
    		this.set(
    			1, 0, 0, 0,
    			0, 1, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	clone() {
    		return new Matrix4().fromArray( this.elements );
    	}
    	copy( m ) {
    		const te = this.elements;
    		const me = m.elements;
    		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
    		te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
    		te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
    		te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];
    		return this;
    	}
    	copyPosition( m ) {
    		const te = this.elements, me = m.elements;
    		te[ 12 ] = me[ 12 ];
    		te[ 13 ] = me[ 13 ];
    		te[ 14 ] = me[ 14 ];
    		return this;
    	}
    	extractBasis( xAxis, yAxis, zAxis ) {
    		xAxis.setFromMatrixColumn( this, 0 );
    		yAxis.setFromMatrixColumn( this, 1 );
    		zAxis.setFromMatrixColumn( this, 2 );
    		return this;
    	}
    	makeBasis( xAxis, yAxis, zAxis ) {
    		this.set(
    			xAxis.x, yAxis.x, zAxis.x, 0,
    			xAxis.y, yAxis.y, zAxis.y, 0,
    			xAxis.z, yAxis.z, zAxis.z, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	extractRotation( m ) {
    		const te = this.elements;
    		const me = m.elements;
    		const scaleX = 1 / _v1$1.setFromMatrixColumn( m, 0 ).length();
    		const scaleY = 1 / _v1$1.setFromMatrixColumn( m, 1 ).length();
    		const scaleZ = 1 / _v1$1.setFromMatrixColumn( m, 2 ).length();
    		te[ 0 ] = me[ 0 ] * scaleX;
    		te[ 1 ] = me[ 1 ] * scaleX;
    		te[ 2 ] = me[ 2 ] * scaleX;
    		te[ 3 ] = 0;
    		te[ 4 ] = me[ 4 ] * scaleY;
    		te[ 5 ] = me[ 5 ] * scaleY;
    		te[ 6 ] = me[ 6 ] * scaleY;
    		te[ 7 ] = 0;
    		te[ 8 ] = me[ 8 ] * scaleZ;
    		te[ 9 ] = me[ 9 ] * scaleZ;
    		te[ 10 ] = me[ 10 ] * scaleZ;
    		te[ 11 ] = 0;
    		te[ 12 ] = 0;
    		te[ 13 ] = 0;
    		te[ 14 ] = 0;
    		te[ 15 ] = 1;
    		return this;
    	}
    	makeRotationFromEuler( euler ) {
    		if ( ! ( euler && euler.isEuler ) ) {
    			console.error( 'THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.' );
    		}
    		const te = this.elements;
    		const x = euler.x, y = euler.y, z = euler.z;
    		const a = Math.cos( x ), b = Math.sin( x );
    		const c = Math.cos( y ), d = Math.sin( y );
    		const e = Math.cos( z ), f = Math.sin( z );
    		if ( euler.order === 'XYZ' ) {
    			const ae = a * e, af = a * f, be = b * e, bf = b * f;
    			te[ 0 ] = c * e;
    			te[ 4 ] = - c * f;
    			te[ 8 ] = d;
    			te[ 1 ] = af + be * d;
    			te[ 5 ] = ae - bf * d;
    			te[ 9 ] = - b * c;
    			te[ 2 ] = bf - ae * d;
    			te[ 6 ] = be + af * d;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'YXZ' ) {
    			const ce = c * e, cf = c * f, de = d * e, df = d * f;
    			te[ 0 ] = ce + df * b;
    			te[ 4 ] = de * b - cf;
    			te[ 8 ] = a * d;
    			te[ 1 ] = a * f;
    			te[ 5 ] = a * e;
    			te[ 9 ] = - b;
    			te[ 2 ] = cf * b - de;
    			te[ 6 ] = df + ce * b;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'ZXY' ) {
    			const ce = c * e, cf = c * f, de = d * e, df = d * f;
    			te[ 0 ] = ce - df * b;
    			te[ 4 ] = - a * f;
    			te[ 8 ] = de + cf * b;
    			te[ 1 ] = cf + de * b;
    			te[ 5 ] = a * e;
    			te[ 9 ] = df - ce * b;
    			te[ 2 ] = - a * d;
    			te[ 6 ] = b;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'ZYX' ) {
    			const ae = a * e, af = a * f, be = b * e, bf = b * f;
    			te[ 0 ] = c * e;
    			te[ 4 ] = be * d - af;
    			te[ 8 ] = ae * d + bf;
    			te[ 1 ] = c * f;
    			te[ 5 ] = bf * d + ae;
    			te[ 9 ] = af * d - be;
    			te[ 2 ] = - d;
    			te[ 6 ] = b * c;
    			te[ 10 ] = a * c;
    		} else if ( euler.order === 'YZX' ) {
    			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
    			te[ 0 ] = c * e;
    			te[ 4 ] = bd - ac * f;
    			te[ 8 ] = bc * f + ad;
    			te[ 1 ] = f;
    			te[ 5 ] = a * e;
    			te[ 9 ] = - b * e;
    			te[ 2 ] = - d * e;
    			te[ 6 ] = ad * f + bc;
    			te[ 10 ] = ac - bd * f;
    		} else if ( euler.order === 'XZY' ) {
    			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
    			te[ 0 ] = c * e;
    			te[ 4 ] = - f;
    			te[ 8 ] = d * e;
    			te[ 1 ] = ac * f + bd;
    			te[ 5 ] = a * e;
    			te[ 9 ] = ad * f - bc;
    			te[ 2 ] = bc * f - ad;
    			te[ 6 ] = b * e;
    			te[ 10 ] = bd * f + ac;
    		}
    		te[ 3 ] = 0;
    		te[ 7 ] = 0;
    		te[ 11 ] = 0;
    		te[ 12 ] = 0;
    		te[ 13 ] = 0;
    		te[ 14 ] = 0;
    		te[ 15 ] = 1;
    		return this;
    	}
    	makeRotationFromQuaternion( q ) {
    		return this.compose( _zero, q, _one );
    	}
    	lookAt( eye, target, up ) {
    		const te = this.elements;
    		_z.subVectors( eye, target );
    		if ( _z.lengthSq() === 0 ) {
    			_z.z = 1;
    		}
    		_z.normalize();
    		_x.crossVectors( up, _z );
    		if ( _x.lengthSq() === 0 ) {
    			if ( Math.abs( up.z ) === 1 ) {
    				_z.x += 0.0001;
    			} else {
    				_z.z += 0.0001;
    			}
    			_z.normalize();
    			_x.crossVectors( up, _z );
    		}
    		_x.normalize();
    		_y.crossVectors( _z, _x );
    		te[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;
    		te[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;
    		te[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;
    		return this;
    	}
    	multiply( m, n ) {
    		if ( n !== undefined ) {
    			console.warn( 'THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.' );
    			return this.multiplyMatrices( m, n );
    		}
    		return this.multiplyMatrices( this, m );
    	}
    	premultiply( m ) {
    		return this.multiplyMatrices( m, this );
    	}
    	multiplyMatrices( a, b ) {
    		const ae = a.elements;
    		const be = b.elements;
    		const te = this.elements;
    		const a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
    		const a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
    		const a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
    		const a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];
    		const b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
    		const b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
    		const b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
    		const b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];
    		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
    		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
    		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
    		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
    		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
    		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
    		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
    		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
    		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
    		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
    		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
    		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
    		te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
    		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
    		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
    		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
    		return this;
    	}
    	multiplyScalar( s ) {
    		const te = this.elements;
    		te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
    		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
    		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
    		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;
    		return this;
    	}
    	determinant() {
    		const te = this.elements;
    		const n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
    		const n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
    		const n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
    		const n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];
    		return (
    			n41 * (
    				+ n14 * n23 * n32
    				 - n13 * n24 * n32
    				 - n14 * n22 * n33
    				 + n12 * n24 * n33
    				 + n13 * n22 * n34
    				 - n12 * n23 * n34
    			) +
    			n42 * (
    				+ n11 * n23 * n34
    				 - n11 * n24 * n33
    				 + n14 * n21 * n33
    				 - n13 * n21 * n34
    				 + n13 * n24 * n31
    				 - n14 * n23 * n31
    			) +
    			n43 * (
    				+ n11 * n24 * n32
    				 - n11 * n22 * n34
    				 - n14 * n21 * n32
    				 + n12 * n21 * n34
    				 + n14 * n22 * n31
    				 - n12 * n24 * n31
    			) +
    			n44 * (
    				- n13 * n22 * n31
    				 - n11 * n23 * n32
    				 + n11 * n22 * n33
    				 + n13 * n21 * n32
    				 - n12 * n21 * n33
    				 + n12 * n23 * n31
    			)
    		);
    	}
    	transpose() {
    		const te = this.elements;
    		let tmp;
    		tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
    		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
    		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;
    		tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
    		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
    		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;
    		return this;
    	}
    	setPosition( x, y, z ) {
    		const te = this.elements;
    		if ( x.isVector3 ) {
    			te[ 12 ] = x.x;
    			te[ 13 ] = x.y;
    			te[ 14 ] = x.z;
    		} else {
    			te[ 12 ] = x;
    			te[ 13 ] = y;
    			te[ 14 ] = z;
    		}
    		return this;
    	}
    	getInverse( m, throwOnDegenerate ) {
    		if ( throwOnDegenerate !== undefined ) {
    			console.warn( "THREE.Matrix4: .getInverse() can no longer be configured to throw on degenerate." );
    		}
    		const te = this.elements,
    			me = m.elements,
    			n11 = me[ 0 ], n21 = me[ 1 ], n31 = me[ 2 ], n41 = me[ 3 ],
    			n12 = me[ 4 ], n22 = me[ 5 ], n32 = me[ 6 ], n42 = me[ 7 ],
    			n13 = me[ 8 ], n23 = me[ 9 ], n33 = me[ 10 ], n43 = me[ 11 ],
    			n14 = me[ 12 ], n24 = me[ 13 ], n34 = me[ 14 ], n44 = me[ 15 ],
    			t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
    			t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
    			t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
    			t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
    		const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
    		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
    		const detInv = 1 / det;
    		te[ 0 ] = t11 * detInv;
    		te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
    		te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
    		te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;
    		te[ 4 ] = t12 * detInv;
    		te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
    		te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
    		te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;
    		te[ 8 ] = t13 * detInv;
    		te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
    		te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
    		te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;
    		te[ 12 ] = t14 * detInv;
    		te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
    		te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
    		te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;
    		return this;
    	}
    	scale( v ) {
    		const te = this.elements;
    		const x = v.x, y = v.y, z = v.z;
    		te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
    		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
    		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
    		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;
    		return this;
    	}
    	getMaxScaleOnAxis() {
    		const te = this.elements;
    		const scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
    		const scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
    		const scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];
    		return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );
    	}
    	makeTranslation( x, y, z ) {
    		this.set(
    			1, 0, 0, x,
    			0, 1, 0, y,
    			0, 0, 1, z,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationX( theta ) {
    		const c = Math.cos( theta ), s = Math.sin( theta );
    		this.set(
    			1, 0, 0, 0,
    			0, c, - s, 0,
    			0, s, c, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationY( theta ) {
    		const c = Math.cos( theta ), s = Math.sin( theta );
    		this.set(
    			 c, 0, s, 0,
    			 0, 1, 0, 0,
    			- s, 0, c, 0,
    			 0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationZ( theta ) {
    		const c = Math.cos( theta ), s = Math.sin( theta );
    		this.set(
    			c, - s, 0, 0,
    			s, c, 0, 0,
    			0, 0, 1, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeRotationAxis( axis, angle ) {
    		const c = Math.cos( angle );
    		const s = Math.sin( angle );
    		const t = 1 - c;
    		const x = axis.x, y = axis.y, z = axis.z;
    		const tx = t * x, ty = t * y;
    		this.set(
    			tx * x + c, tx * y - s * z, tx * z + s * y, 0,
    			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
    			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeScale( x, y, z ) {
    		this.set(
    			x, 0, 0, 0,
    			0, y, 0, 0,
    			0, 0, z, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	makeShear( x, y, z ) {
    		this.set(
    			1, y, z, 0,
    			x, 1, z, 0,
    			x, y, 1, 0,
    			0, 0, 0, 1
    		);
    		return this;
    	}
    	compose( position, quaternion, scale ) {
    		const te = this.elements;
    		const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
    		const x2 = x + x,	y2 = y + y, z2 = z + z;
    		const xx = x * x2, xy = x * y2, xz = x * z2;
    		const yy = y * y2, yz = y * z2, zz = z * z2;
    		const wx = w * x2, wy = w * y2, wz = w * z2;
    		const sx = scale.x, sy = scale.y, sz = scale.z;
    		te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
    		te[ 1 ] = ( xy + wz ) * sx;
    		te[ 2 ] = ( xz - wy ) * sx;
    		te[ 3 ] = 0;
    		te[ 4 ] = ( xy - wz ) * sy;
    		te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
    		te[ 6 ] = ( yz + wx ) * sy;
    		te[ 7 ] = 0;
    		te[ 8 ] = ( xz + wy ) * sz;
    		te[ 9 ] = ( yz - wx ) * sz;
    		te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
    		te[ 11 ] = 0;
    		te[ 12 ] = position.x;
    		te[ 13 ] = position.y;
    		te[ 14 ] = position.z;
    		te[ 15 ] = 1;
    		return this;
    	}
    	decompose( position, quaternion, scale ) {
    		const te = this.elements;
    		let sx = _v1$1.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
    		const sy = _v1$1.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
    		const sz = _v1$1.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();
    		const det = this.determinant();
    		if ( det < 0 ) sx = - sx;
    		position.x = te[ 12 ];
    		position.y = te[ 13 ];
    		position.z = te[ 14 ];
    		_m1.copy( this );
    		const invSX = 1 / sx;
    		const invSY = 1 / sy;
    		const invSZ = 1 / sz;
    		_m1.elements[ 0 ] *= invSX;
    		_m1.elements[ 1 ] *= invSX;
    		_m1.elements[ 2 ] *= invSX;
    		_m1.elements[ 4 ] *= invSY;
    		_m1.elements[ 5 ] *= invSY;
    		_m1.elements[ 6 ] *= invSY;
    		_m1.elements[ 8 ] *= invSZ;
    		_m1.elements[ 9 ] *= invSZ;
    		_m1.elements[ 10 ] *= invSZ;
    		quaternion.setFromRotationMatrix( _m1 );
    		scale.x = sx;
    		scale.y = sy;
    		scale.z = sz;
    		return this;
    	}
    	makePerspective( left, right, top, bottom, near, far ) {
    		if ( far === undefined ) {
    			console.warn( 'THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.' );
    		}
    		const te = this.elements;
    		const x = 2 * near / ( right - left );
    		const y = 2 * near / ( top - bottom );
    		const a = ( right + left ) / ( right - left );
    		const b = ( top + bottom ) / ( top - bottom );
    		const c = - ( far + near ) / ( far - near );
    		const d = - 2 * far * near / ( far - near );
    		te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a;	te[ 12 ] = 0;
    		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b;	te[ 13 ] = 0;
    		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c;	te[ 14 ] = d;
    		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;
    		return this;
    	}
    	makeOrthographic( left, right, top, bottom, near, far ) {
    		const te = this.elements;
    		const w = 1.0 / ( right - left );
    		const h = 1.0 / ( top - bottom );
    		const p = 1.0 / ( far - near );
    		const x = ( right + left ) * w;
    		const y = ( top + bottom ) * h;
    		const z = ( far + near ) * p;
    		te[ 0 ] = 2 * w;	te[ 4 ] = 0;	te[ 8 ] = 0;	te[ 12 ] = - x;
    		te[ 1 ] = 0;	te[ 5 ] = 2 * h;	te[ 9 ] = 0;	te[ 13 ] = - y;
    		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = - 2 * p;	te[ 14 ] = - z;
    		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = 0;	te[ 15 ] = 1;
    		return this;
    	}
    	equals( matrix ) {
    		const te = this.elements;
    		const me = matrix.elements;
    		for ( let i = 0; i < 16; i ++ ) {
    			if ( te[ i ] !== me[ i ] ) return false;
    		}
    		return true;
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		for ( let i = 0; i < 16; i ++ ) {
    			this.elements[ i ] = array[ i + offset ];
    		}
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		const te = this.elements;
    		array[ offset ] = te[ 0 ];
    		array[ offset + 1 ] = te[ 1 ];
    		array[ offset + 2 ] = te[ 2 ];
    		array[ offset + 3 ] = te[ 3 ];
    		array[ offset + 4 ] = te[ 4 ];
    		array[ offset + 5 ] = te[ 5 ];
    		array[ offset + 6 ] = te[ 6 ];
    		array[ offset + 7 ] = te[ 7 ];
    		array[ offset + 8 ] = te[ 8 ];
    		array[ offset + 9 ] = te[ 9 ];
    		array[ offset + 10 ] = te[ 10 ];
    		array[ offset + 11 ] = te[ 11 ];
    		array[ offset + 12 ] = te[ 12 ];
    		array[ offset + 13 ] = te[ 13 ];
    		array[ offset + 14 ] = te[ 14 ];
    		array[ offset + 15 ] = te[ 15 ];
    		return array;
    	}
    }
    const _v1$1 = new Vector3();
    const _m1 = new Matrix4();
    const _zero = new Vector3( 0, 0, 0 );
    const _one = new Vector3( 1, 1, 1 );
    const _x = new Vector3();
    const _y = new Vector3();
    const _z = new Vector3();
    class Euler {
    	constructor( x = 0, y = 0, z = 0, order = Euler.DefaultOrder ) {
    		Object.defineProperty( this, 'isEuler', { value: true } );
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._order = order;
    	}
    	get x() {
    		return this._x;
    	}
    	set x( value ) {
    		this._x = value;
    		this._onChangeCallback();
    	}
    	get y() {
    		return this._y;
    	}
    	set y( value ) {
    		this._y = value;
    		this._onChangeCallback();
    	}
    	get z() {
    		return this._z;
    	}
    	set z( value ) {
    		this._z = value;
    		this._onChangeCallback();
    	}
    	get order() {
    		return this._order;
    	}
    	set order( value ) {
    		this._order = value;
    		this._onChangeCallback();
    	}
    	set( x, y, z, order ) {
    		this._x = x;
    		this._y = y;
    		this._z = z;
    		this._order = order || this._order;
    		this._onChangeCallback();
    		return this;
    	}
    	clone() {
    		return new this.constructor( this._x, this._y, this._z, this._order );
    	}
    	copy( euler ) {
    		this._x = euler._x;
    		this._y = euler._y;
    		this._z = euler._z;
    		this._order = euler._order;
    		this._onChangeCallback();
    		return this;
    	}
    	setFromRotationMatrix( m, order, update ) {
    		const clamp = MathUtils.clamp;
    		const te = m.elements;
    		const m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
    		const m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
    		const m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
    		order = order || this._order;
    		switch ( order ) {
    			case 'XYZ':
    				this._y = Math.asin( clamp( m13, - 1, 1 ) );
    				if ( Math.abs( m13 ) < 0.9999999 ) {
    					this._x = Math.atan2( - m23, m33 );
    					this._z = Math.atan2( - m12, m11 );
    				} else {
    					this._x = Math.atan2( m32, m22 );
    					this._z = 0;
    				}
    				break;
    			case 'YXZ':
    				this._x = Math.asin( - clamp( m23, - 1, 1 ) );
    				if ( Math.abs( m23 ) < 0.9999999 ) {
    					this._y = Math.atan2( m13, m33 );
    					this._z = Math.atan2( m21, m22 );
    				} else {
    					this._y = Math.atan2( - m31, m11 );
    					this._z = 0;
    				}
    				break;
    			case 'ZXY':
    				this._x = Math.asin( clamp( m32, - 1, 1 ) );
    				if ( Math.abs( m32 ) < 0.9999999 ) {
    					this._y = Math.atan2( - m31, m33 );
    					this._z = Math.atan2( - m12, m22 );
    				} else {
    					this._y = 0;
    					this._z = Math.atan2( m21, m11 );
    				}
    				break;
    			case 'ZYX':
    				this._y = Math.asin( - clamp( m31, - 1, 1 ) );
    				if ( Math.abs( m31 ) < 0.9999999 ) {
    					this._x = Math.atan2( m32, m33 );
    					this._z = Math.atan2( m21, m11 );
    				} else {
    					this._x = 0;
    					this._z = Math.atan2( - m12, m22 );
    				}
    				break;
    			case 'YZX':
    				this._z = Math.asin( clamp( m21, - 1, 1 ) );
    				if ( Math.abs( m21 ) < 0.9999999 ) {
    					this._x = Math.atan2( - m23, m22 );
    					this._y = Math.atan2( - m31, m11 );
    				} else {
    					this._x = 0;
    					this._y = Math.atan2( m13, m33 );
    				}
    				break;
    			case 'XZY':
    				this._z = Math.asin( - clamp( m12, - 1, 1 ) );
    				if ( Math.abs( m12 ) < 0.9999999 ) {
    					this._x = Math.atan2( m32, m22 );
    					this._y = Math.atan2( m13, m11 );
    				} else {
    					this._x = Math.atan2( - m23, m33 );
    					this._y = 0;
    				}
    				break;
    			default:
    				console.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );
    		}
    		this._order = order;
    		if ( update !== false ) this._onChangeCallback();
    		return this;
    	}
    	setFromQuaternion( q, order, update ) {
    		_matrix.makeRotationFromQuaternion( q );
    		return this.setFromRotationMatrix( _matrix, order, update );
    	}
    	setFromVector3( v, order ) {
    		return this.set( v.x, v.y, v.z, order || this._order );
    	}
    	reorder( newOrder ) {
    		_quaternion$1.setFromEuler( this );
    		return this.setFromQuaternion( _quaternion$1, newOrder );
    	}
    	equals( euler ) {
    		return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );
    	}
    	fromArray( array ) {
    		this._x = array[ 0 ];
    		this._y = array[ 1 ];
    		this._z = array[ 2 ];
    		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];
    		this._onChangeCallback();
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this._x;
    		array[ offset + 1 ] = this._y;
    		array[ offset + 2 ] = this._z;
    		array[ offset + 3 ] = this._order;
    		return array;
    	}
    	toVector3( optionalResult ) {
    		if ( optionalResult ) {
    			return optionalResult.set( this._x, this._y, this._z );
    		} else {
    			return new Vector3( this._x, this._y, this._z );
    		}
    	}
    	_onChange( callback ) {
    		this._onChangeCallback = callback;
    		return this;
    	}
    	_onChangeCallback() {}
    }
    Euler.DefaultOrder = 'XYZ';
    Euler.RotationOrders = [ 'XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX' ];
    const _matrix = new Matrix4();
    const _quaternion$1 = new Quaternion();
    class Layers {
    	constructor() {
    		this.mask = 1 | 0;
    	}
    	set( channel ) {
    		this.mask = 1 << channel | 0;
    	}
    	enable( channel ) {
    		this.mask |= 1 << channel | 0;
    	}
    	enableAll() {
    		this.mask = 0xffffffff | 0;
    	}
    	toggle( channel ) {
    		this.mask ^= 1 << channel | 0;
    	}
    	disable( channel ) {
    		this.mask &= ~ ( 1 << channel | 0 );
    	}
    	disableAll() {
    		this.mask = 0;
    	}
    	test( layers ) {
    		return ( this.mask & layers.mask ) !== 0;
    	}
    }
    let _object3DId = 0;
    const _v1$2 = new Vector3();
    const _q1 = new Quaternion();
    const _m1$1 = new Matrix4();
    const _target = new Vector3();
    const _position = new Vector3();
    const _scale = new Vector3();
    const _quaternion$2 = new Quaternion();
    const _xAxis = new Vector3( 1, 0, 0 );
    const _yAxis = new Vector3( 0, 1, 0 );
    const _zAxis = new Vector3( 0, 0, 1 );
    const _addedEvent = { type: 'added' };
    const _removedEvent = { type: 'removed' };
    function Object3D() {
    	Object.defineProperty( this, 'id', { value: _object3DId ++ } );
    	this.uuid = MathUtils.generateUUID();
    	this.name = '';
    	this.type = 'Object3D';
    	this.parent = null;
    	this.children = [];
    	this.up = Object3D.DefaultUp.clone();
    	const position = new Vector3();
    	const rotation = new Euler();
    	const quaternion = new Quaternion();
    	const scale = new Vector3( 1, 1, 1 );
    	function onRotationChange() {
    		quaternion.setFromEuler( rotation, false );
    	}
    	function onQuaternionChange() {
    		rotation.setFromQuaternion( quaternion, undefined, false );
    	}
    	rotation._onChange( onRotationChange );
    	quaternion._onChange( onQuaternionChange );
    	Object.defineProperties( this, {
    		position: {
    			configurable: true,
    			enumerable: true,
    			value: position
    		},
    		rotation: {
    			configurable: true,
    			enumerable: true,
    			value: rotation
    		},
    		quaternion: {
    			configurable: true,
    			enumerable: true,
    			value: quaternion
    		},
    		scale: {
    			configurable: true,
    			enumerable: true,
    			value: scale
    		},
    		modelViewMatrix: {
    			value: new Matrix4()
    		},
    		normalMatrix: {
    			value: new Matrix3()
    		}
    	} );
    	this.matrix = new Matrix4();
    	this.matrixWorld = new Matrix4();
    	this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
    	this.matrixWorldNeedsUpdate = false;
    	this.layers = new Layers();
    	this.visible = true;
    	this.castShadow = false;
    	this.receiveShadow = false;
    	this.frustumCulled = true;
    	this.renderOrder = 0;
    	this.userData = {};
    }
    Object3D.DefaultUp = new Vector3( 0, 1, 0 );
    Object3D.DefaultMatrixAutoUpdate = true;
    Object3D.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
    	constructor: Object3D,
    	isObject3D: true,
    	onBeforeRender: function () {},
    	onAfterRender: function () {},
    	applyMatrix4: function ( matrix ) {
    		if ( this.matrixAutoUpdate ) this.updateMatrix();
    		this.matrix.premultiply( matrix );
    		this.matrix.decompose( this.position, this.quaternion, this.scale );
    	},
    	applyQuaternion: function ( q ) {
    		this.quaternion.premultiply( q );
    		return this;
    	},
    	setRotationFromAxisAngle: function ( axis, angle ) {
    		this.quaternion.setFromAxisAngle( axis, angle );
    	},
    	setRotationFromEuler: function ( euler ) {
    		this.quaternion.setFromEuler( euler, true );
    	},
    	setRotationFromMatrix: function ( m ) {
    		this.quaternion.setFromRotationMatrix( m );
    	},
    	setRotationFromQuaternion: function ( q ) {
    		this.quaternion.copy( q );
    	},
    	rotateOnAxis: function ( axis, angle ) {
    		_q1.setFromAxisAngle( axis, angle );
    		this.quaternion.multiply( _q1 );
    		return this;
    	},
    	rotateOnWorldAxis: function ( axis, angle ) {
    		_q1.setFromAxisAngle( axis, angle );
    		this.quaternion.premultiply( _q1 );
    		return this;
    	},
    	rotateX: function ( angle ) {
    		return this.rotateOnAxis( _xAxis, angle );
    	},
    	rotateY: function ( angle ) {
    		return this.rotateOnAxis( _yAxis, angle );
    	},
    	rotateZ: function ( angle ) {
    		return this.rotateOnAxis( _zAxis, angle );
    	},
    	translateOnAxis: function ( axis, distance ) {
    		_v1$2.copy( axis ).applyQuaternion( this.quaternion );
    		this.position.add( _v1$2.multiplyScalar( distance ) );
    		return this;
    	},
    	translateX: function ( distance ) {
    		return this.translateOnAxis( _xAxis, distance );
    	},
    	translateY: function ( distance ) {
    		return this.translateOnAxis( _yAxis, distance );
    	},
    	translateZ: function ( distance ) {
    		return this.translateOnAxis( _zAxis, distance );
    	},
    	localToWorld: function ( vector ) {
    		return vector.applyMatrix4( this.matrixWorld );
    	},
    	worldToLocal: function ( vector ) {
    		return vector.applyMatrix4( _m1$1.getInverse( this.matrixWorld ) );
    	},
    	lookAt: function ( x, y, z ) {
    		if ( x.isVector3 ) {
    			_target.copy( x );
    		} else {
    			_target.set( x, y, z );
    		}
    		const parent = this.parent;
    		this.updateWorldMatrix( true, false );
    		_position.setFromMatrixPosition( this.matrixWorld );
    		if ( this.isCamera || this.isLight ) {
    			_m1$1.lookAt( _position, _target, this.up );
    		} else {
    			_m1$1.lookAt( _target, _position, this.up );
    		}
    		this.quaternion.setFromRotationMatrix( _m1$1 );
    		if ( parent ) {
    			_m1$1.extractRotation( parent.matrixWorld );
    			_q1.setFromRotationMatrix( _m1$1 );
    			this.quaternion.premultiply( _q1.inverse() );
    		}
    	},
    	add: function ( object ) {
    		if ( arguments.length > 1 ) {
    			for ( let i = 0; i < arguments.length; i ++ ) {
    				this.add( arguments[ i ] );
    			}
    			return this;
    		}
    		if ( object === this ) {
    			console.error( "THREE.Object3D.add: object can't be added as a child of itself.", object );
    			return this;
    		}
    		if ( ( object && object.isObject3D ) ) {
    			if ( object.parent !== null ) {
    				object.parent.remove( object );
    			}
    			object.parent = this;
    			this.children.push( object );
    			object.dispatchEvent( _addedEvent );
    		} else {
    			console.error( "THREE.Object3D.add: object not an instance of THREE.Object3D.", object );
    		}
    		return this;
    	},
    	remove: function ( object ) {
    		if ( arguments.length > 1 ) {
    			for ( let i = 0; i < arguments.length; i ++ ) {
    				this.remove( arguments[ i ] );
    			}
    			return this;
    		}
    		const index = this.children.indexOf( object );
    		if ( index !== - 1 ) {
    			object.parent = null;
    			this.children.splice( index, 1 );
    			object.dispatchEvent( _removedEvent );
    		}
    		return this;
    	},
    	attach: function ( object ) {
    		this.updateWorldMatrix( true, false );
    		_m1$1.getInverse( this.matrixWorld );
    		if ( object.parent !== null ) {
    			object.parent.updateWorldMatrix( true, false );
    			_m1$1.multiply( object.parent.matrixWorld );
    		}
    		object.applyMatrix4( _m1$1 );
    		object.updateWorldMatrix( false, false );
    		this.add( object );
    		return this;
    	},
    	getObjectById: function ( id ) {
    		return this.getObjectByProperty( 'id', id );
    	},
    	getObjectByName: function ( name ) {
    		return this.getObjectByProperty( 'name', name );
    	},
    	getObjectByProperty: function ( name, value ) {
    		if ( this[ name ] === value ) return this;
    		for ( let i = 0, l = this.children.length; i < l; i ++ ) {
    			const child = this.children[ i ];
    			const object = child.getObjectByProperty( name, value );
    			if ( object !== undefined ) {
    				return object;
    			}
    		}
    		return undefined;
    	},
    	getWorldPosition: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldPosition() target is now required' );
    			target = new Vector3();
    		}
    		this.updateMatrixWorld( true );
    		return target.setFromMatrixPosition( this.matrixWorld );
    	},
    	getWorldQuaternion: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldQuaternion() target is now required' );
    			target = new Quaternion();
    		}
    		this.updateMatrixWorld( true );
    		this.matrixWorld.decompose( _position, target, _scale );
    		return target;
    	},
    	getWorldScale: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldScale() target is now required' );
    			target = new Vector3();
    		}
    		this.updateMatrixWorld( true );
    		this.matrixWorld.decompose( _position, _quaternion$2, target );
    		return target;
    	},
    	getWorldDirection: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Object3D: .getWorldDirection() target is now required' );
    			target = new Vector3();
    		}
    		this.updateMatrixWorld( true );
    		const e = this.matrixWorld.elements;
    		return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();
    	},
    	raycast: function () {},
    	traverse: function ( callback ) {
    		callback( this );
    		const children = this.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			children[ i ].traverse( callback );
    		}
    	},
    	traverseVisible: function ( callback ) {
    		if ( this.visible === false ) return;
    		callback( this );
    		const children = this.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			children[ i ].traverseVisible( callback );
    		}
    	},
    	traverseAncestors: function ( callback ) {
    		const parent = this.parent;
    		if ( parent !== null ) {
    			callback( parent );
    			parent.traverseAncestors( callback );
    		}
    	},
    	updateMatrix: function () {
    		this.matrix.compose( this.position, this.quaternion, this.scale );
    		this.matrixWorldNeedsUpdate = true;
    	},
    	updateMatrixWorld: function ( force ) {
    		if ( this.matrixAutoUpdate ) this.updateMatrix();
    		if ( this.matrixWorldNeedsUpdate || force ) {
    			if ( this.parent === null ) {
    				this.matrixWorld.copy( this.matrix );
    			} else {
    				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
    			}
    			this.matrixWorldNeedsUpdate = false;
    			force = true;
    		}
    		const children = this.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			children[ i ].updateMatrixWorld( force );
    		}
    	},
    	updateWorldMatrix: function ( updateParents, updateChildren ) {
    		const parent = this.parent;
    		if ( updateParents === true && parent !== null ) {
    			parent.updateWorldMatrix( true, false );
    		}
    		if ( this.matrixAutoUpdate ) this.updateMatrix();
    		if ( this.parent === null ) {
    			this.matrixWorld.copy( this.matrix );
    		} else {
    			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
    		}
    		if ( updateChildren === true ) {
    			const children = this.children;
    			for ( let i = 0, l = children.length; i < l; i ++ ) {
    				children[ i ].updateWorldMatrix( false, true );
    			}
    		}
    	},
    	toJSON: function ( meta ) {
    		const isRootObject = ( meta === undefined || typeof meta === 'string' );
    		const output = {};
    		if ( isRootObject ) {
    			meta = {
    				geometries: {},
    				materials: {},
    				textures: {},
    				images: {},
    				shapes: {}
    			};
    			output.metadata = {
    				version: 4.5,
    				type: 'Object',
    				generator: 'Object3D.toJSON'
    			};
    		}
    		const object = {};
    		object.uuid = this.uuid;
    		object.type = this.type;
    		if ( this.name !== '' ) object.name = this.name;
    		if ( this.castShadow === true ) object.castShadow = true;
    		if ( this.receiveShadow === true ) object.receiveShadow = true;
    		if ( this.visible === false ) object.visible = false;
    		if ( this.frustumCulled === false ) object.frustumCulled = false;
    		if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
    		if ( JSON.stringify( this.userData ) !== '{}' ) object.userData = this.userData;
    		object.layers = this.layers.mask;
    		object.matrix = this.matrix.toArray();
    		if ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;
    		if ( this.isInstancedMesh ) {
    			object.type = 'InstancedMesh';
    			object.count = this.count;
    			object.instanceMatrix = this.instanceMatrix.toJSON();
    		}
    		function serialize( library, element ) {
    			if ( library[ element.uuid ] === undefined ) {
    				library[ element.uuid ] = element.toJSON( meta );
    			}
    			return element.uuid;
    		}
    		if ( this.isMesh || this.isLine || this.isPoints ) {
    			object.geometry = serialize( meta.geometries, this.geometry );
    			const parameters = this.geometry.parameters;
    			if ( parameters !== undefined && parameters.shapes !== undefined ) {
    				const shapes = parameters.shapes;
    				if ( Array.isArray( shapes ) ) {
    					for ( let i = 0, l = shapes.length; i < l; i ++ ) {
    						const shape = shapes[ i ];
    						serialize( meta.shapes, shape );
    					}
    				} else {
    					serialize( meta.shapes, shapes );
    				}
    			}
    		}
    		if ( this.material !== undefined ) {
    			if ( Array.isArray( this.material ) ) {
    				const uuids = [];
    				for ( let i = 0, l = this.material.length; i < l; i ++ ) {
    					uuids.push( serialize( meta.materials, this.material[ i ] ) );
    				}
    				object.material = uuids;
    			} else {
    				object.material = serialize( meta.materials, this.material );
    			}
    		}
    		if ( this.children.length > 0 ) {
    			object.children = [];
    			for ( let i = 0; i < this.children.length; i ++ ) {
    				object.children.push( this.children[ i ].toJSON( meta ).object );
    			}
    		}
    		if ( isRootObject ) {
    			const geometries = extractFromCache( meta.geometries );
    			const materials = extractFromCache( meta.materials );
    			const textures = extractFromCache( meta.textures );
    			const images = extractFromCache( meta.images );
    			const shapes = extractFromCache( meta.shapes );
    			if ( geometries.length > 0 ) output.geometries = geometries;
    			if ( materials.length > 0 ) output.materials = materials;
    			if ( textures.length > 0 ) output.textures = textures;
    			if ( images.length > 0 ) output.images = images;
    			if ( shapes.length > 0 ) output.shapes = shapes;
    		}
    		output.object = object;
    		return output;
    		function extractFromCache( cache ) {
    			const values = [];
    			for ( const key in cache ) {
    				const data = cache[ key ];
    				delete data.metadata;
    				values.push( data );
    			}
    			return values;
    		}
    	},
    	clone: function ( recursive ) {
    		return new this.constructor().copy( this, recursive );
    	},
    	copy: function ( source, recursive ) {
    		if ( recursive === undefined ) recursive = true;
    		this.name = source.name;
    		this.up.copy( source.up );
    		this.position.copy( source.position );
    		this.rotation.order = source.rotation.order;
    		this.quaternion.copy( source.quaternion );
    		this.scale.copy( source.scale );
    		this.matrix.copy( source.matrix );
    		this.matrixWorld.copy( source.matrixWorld );
    		this.matrixAutoUpdate = source.matrixAutoUpdate;
    		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
    		this.layers.mask = source.layers.mask;
    		this.visible = source.visible;
    		this.castShadow = source.castShadow;
    		this.receiveShadow = source.receiveShadow;
    		this.frustumCulled = source.frustumCulled;
    		this.renderOrder = source.renderOrder;
    		this.userData = JSON.parse( JSON.stringify( source.userData ) );
    		if ( recursive === true ) {
    			for ( let i = 0; i < source.children.length; i ++ ) {
    				const child = source.children[ i ];
    				this.add( child.clone() );
    			}
    		}
    		return this;
    	}
    } );
    const _vector1 = new Vector3();
    const _vector2 = new Vector3();
    const _normalMatrix = new Matrix3();
    class Plane {
    	constructor( normal, constant ) {
    		Object.defineProperty( this, 'isPlane', { value: true } );
    		this.normal = ( normal !== undefined ) ? normal : new Vector3( 1, 0, 0 );
    		this.constant = ( constant !== undefined ) ? constant : 0;
    	}
    	set( normal, constant ) {
    		this.normal.copy( normal );
    		this.constant = constant;
    		return this;
    	}
    	setComponents( x, y, z, w ) {
    		this.normal.set( x, y, z );
    		this.constant = w;
    		return this;
    	}
    	setFromNormalAndCoplanarPoint( normal, point ) {
    		this.normal.copy( normal );
    		this.constant = - point.dot( this.normal );
    		return this;
    	}
    	setFromCoplanarPoints( a, b, c ) {
    		const normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();
    		this.setFromNormalAndCoplanarPoint( normal, a );
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( plane ) {
    		this.normal.copy( plane.normal );
    		this.constant = plane.constant;
    		return this;
    	}
    	normalize() {
    		const inverseNormalLength = 1.0 / this.normal.length();
    		this.normal.multiplyScalar( inverseNormalLength );
    		this.constant *= inverseNormalLength;
    		return this;
    	}
    	negate() {
    		this.constant *= - 1;
    		this.normal.negate();
    		return this;
    	}
    	distanceToPoint( point ) {
    		return this.normal.dot( point ) + this.constant;
    	}
    	distanceToSphere( sphere ) {
    		return this.distanceToPoint( sphere.center ) - sphere.radius;
    	}
    	projectPoint( point, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Plane: .projectPoint() target is now required' );
    			target = new Vector3();
    		}
    		return target.copy( this.normal ).multiplyScalar( - this.distanceToPoint( point ) ).add( point );
    	}
    	intersectLine( line, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Plane: .intersectLine() target is now required' );
    			target = new Vector3();
    		}
    		const direction = line.delta( _vector1 );
    		const denominator = this.normal.dot( direction );
    		if ( denominator === 0 ) {
    			if ( this.distanceToPoint( line.start ) === 0 ) {
    				return target.copy( line.start );
    			}
    			return undefined;
    		}
    		const t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;
    		if ( t < 0 || t > 1 ) {
    			return undefined;
    		}
    		return target.copy( direction ).multiplyScalar( t ).add( line.start );
    	}
    	intersectsLine( line ) {
    		const startSign = this.distanceToPoint( line.start );
    		const endSign = this.distanceToPoint( line.end );
    		return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );
    	}
    	intersectsBox( box ) {
    		return box.intersectsPlane( this );
    	}
    	intersectsSphere( sphere ) {
    		return sphere.intersectsPlane( this );
    	}
    	coplanarPoint( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Plane: .coplanarPoint() target is now required' );
    			target = new Vector3();
    		}
    		return target.copy( this.normal ).multiplyScalar( - this.constant );
    	}
    	applyMatrix4( matrix, optionalNormalMatrix ) {
    		const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );
    		const referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );
    		const normal = this.normal.applyMatrix3( normalMatrix ).normalize();
    		this.constant = - referencePoint.dot( normal );
    		return this;
    	}
    	translate( offset ) {
    		this.constant -= offset.dot( this.normal );
    		return this;
    	}
    	equals( plane ) {
    		return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );
    	}
    }
    const _v0$1 = new Vector3();
    const _v1$3 = new Vector3();
    const _v2$1 = new Vector3();
    const _v3 = new Vector3();
    const _vab = new Vector3();
    const _vac = new Vector3();
    const _vbc = new Vector3();
    const _vap = new Vector3();
    const _vbp = new Vector3();
    const _vcp = new Vector3();
    class Triangle {
    	constructor( a, b, c ) {
    		this.a = ( a !== undefined ) ? a : new Vector3();
    		this.b = ( b !== undefined ) ? b : new Vector3();
    		this.c = ( c !== undefined ) ? c : new Vector3();
    	}
    	static getNormal( a, b, c, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Triangle: .getNormal() target is now required' );
    			target = new Vector3();
    		}
    		target.subVectors( c, b );
    		_v0$1.subVectors( a, b );
    		target.cross( _v0$1 );
    		const targetLengthSq = target.lengthSq();
    		if ( targetLengthSq > 0 ) {
    			return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );
    		}
    		return target.set( 0, 0, 0 );
    	}
    	static getBarycoord( point, a, b, c, target ) {
    		_v0$1.subVectors( c, a );
    		_v1$3.subVectors( b, a );
    		_v2$1.subVectors( point, a );
    		const dot00 = _v0$1.dot( _v0$1 );
    		const dot01 = _v0$1.dot( _v1$3 );
    		const dot02 = _v0$1.dot( _v2$1 );
    		const dot11 = _v1$3.dot( _v1$3 );
    		const dot12 = _v1$3.dot( _v2$1 );
    		const denom = ( dot00 * dot11 - dot01 * dot01 );
    		if ( target === undefined ) {
    			console.warn( 'THREE.Triangle: .getBarycoord() target is now required' );
    			target = new Vector3();
    		}
    		if ( denom === 0 ) {
    			return target.set( - 2, - 1, - 1 );
    		}
    		const invDenom = 1 / denom;
    		const u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
    		const v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;
    		return target.set( 1 - u - v, v, u );
    	}
    	static containsPoint( point, a, b, c ) {
    		this.getBarycoord( point, a, b, c, _v3 );
    		return ( _v3.x >= 0 ) && ( _v3.y >= 0 ) && ( ( _v3.x + _v3.y ) <= 1 );
    	}
    	static getUV( point, p1, p2, p3, uv1, uv2, uv3, target ) {
    		this.getBarycoord( point, p1, p2, p3, _v3 );
    		target.set( 0, 0 );
    		target.addScaledVector( uv1, _v3.x );
    		target.addScaledVector( uv2, _v3.y );
    		target.addScaledVector( uv3, _v3.z );
    		return target;
    	}
    	static isFrontFacing( a, b, c, direction ) {
    		_v0$1.subVectors( c, b );
    		_v1$3.subVectors( a, b );
    		return ( _v0$1.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;
    	}
    	set( a, b, c ) {
    		this.a.copy( a );
    		this.b.copy( b );
    		this.c.copy( c );
    		return this;
    	}
    	setFromPointsAndIndices( points, i0, i1, i2 ) {
    		this.a.copy( points[ i0 ] );
    		this.b.copy( points[ i1 ] );
    		this.c.copy( points[ i2 ] );
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( triangle ) {
    		this.a.copy( triangle.a );
    		this.b.copy( triangle.b );
    		this.c.copy( triangle.c );
    		return this;
    	}
    	getArea() {
    		_v0$1.subVectors( this.c, this.b );
    		_v1$3.subVectors( this.a, this.b );
    		return _v0$1.cross( _v1$3 ).length() * 0.5;
    	}
    	getMidpoint( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Triangle: .getMidpoint() target is now required' );
    			target = new Vector3();
    		}
    		return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );
    	}
    	getNormal( target ) {
    		return Triangle.getNormal( this.a, this.b, this.c, target );
    	}
    	getPlane( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Triangle: .getPlane() target is now required' );
    			target = new Plane();
    		}
    		return target.setFromCoplanarPoints( this.a, this.b, this.c );
    	}
    	getBarycoord( point, target ) {
    		return Triangle.getBarycoord( point, this.a, this.b, this.c, target );
    	}
    	getUV( point, uv1, uv2, uv3, target ) {
    		return Triangle.getUV( point, this.a, this.b, this.c, uv1, uv2, uv3, target );
    	}
    	containsPoint( point ) {
    		return Triangle.containsPoint( point, this.a, this.b, this.c );
    	}
    	isFrontFacing( direction ) {
    		return Triangle.isFrontFacing( this.a, this.b, this.c, direction );
    	}
    	intersectsBox( box ) {
    		return box.intersectsTriangle( this );
    	}
    	closestPointToPoint( p, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Triangle: .closestPointToPoint() target is now required' );
    			target = new Vector3();
    		}
    		const a = this.a, b = this.b, c = this.c;
    		let v, w;
    		_vab.subVectors( b, a );
    		_vac.subVectors( c, a );
    		_vap.subVectors( p, a );
    		const d1 = _vab.dot( _vap );
    		const d2 = _vac.dot( _vap );
    		if ( d1 <= 0 && d2 <= 0 ) {
    			return target.copy( a );
    		}
    		_vbp.subVectors( p, b );
    		const d3 = _vab.dot( _vbp );
    		const d4 = _vac.dot( _vbp );
    		if ( d3 >= 0 && d4 <= d3 ) {
    			return target.copy( b );
    		}
    		const vc = d1 * d4 - d3 * d2;
    		if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {
    			v = d1 / ( d1 - d3 );
    			return target.copy( a ).addScaledVector( _vab, v );
    		}
    		_vcp.subVectors( p, c );
    		const d5 = _vab.dot( _vcp );
    		const d6 = _vac.dot( _vcp );
    		if ( d6 >= 0 && d5 <= d6 ) {
    			return target.copy( c );
    		}
    		const vb = d5 * d2 - d1 * d6;
    		if ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {
    			w = d2 / ( d2 - d6 );
    			return target.copy( a ).addScaledVector( _vac, w );
    		}
    		const va = d3 * d6 - d5 * d4;
    		if ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {
    			_vbc.subVectors( c, b );
    			w = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );
    			return target.copy( b ).addScaledVector( _vbc, w );
    		}
    		const denom = 1 / ( va + vb + vc );
    		v = vb * denom;
    		w = vc * denom;
    		return target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );
    	}
    	equals( triangle ) {
    		return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );
    	}
    }
    const _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
    	'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
    	'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
    	'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
    	'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
    	'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
    	'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
    	'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
    	'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
    	'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
    	'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
    	'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
    	'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
    	'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
    	'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
    	'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
    	'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
    	'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
    	'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
    	'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
    	'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
    	'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
    	'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
    	'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };
    const _hslA = { h: 0, s: 0, l: 0 };
    const _hslB = { h: 0, s: 0, l: 0 };
    function hue2rgb( p, q, t ) {
    	if ( t < 0 ) t += 1;
    	if ( t > 1 ) t -= 1;
    	if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
    	if ( t < 1 / 2 ) return q;
    	if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
    	return p;
    }
    function SRGBToLinear( c ) {
    	return ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );
    }
    function LinearToSRGB( c ) {
    	return ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;
    }
    class Color {
    	constructor( r, g, b ) {
    		Object.defineProperty( this, 'isColor', { value: true } );
    		if ( g === undefined && b === undefined ) {
    			return this.set( r );
    		}
    		return this.setRGB( r, g, b );
    	}
    	set( value ) {
    		if ( value && value.isColor ) {
    			this.copy( value );
    		} else if ( typeof value === 'number' ) {
    			this.setHex( value );
    		} else if ( typeof value === 'string' ) {
    			this.setStyle( value );
    		}
    		return this;
    	}
    	setScalar( scalar ) {
    		this.r = scalar;
    		this.g = scalar;
    		this.b = scalar;
    		return this;
    	}
    	setHex( hex ) {
    		hex = Math.floor( hex );
    		this.r = ( hex >> 16 & 255 ) / 255;
    		this.g = ( hex >> 8 & 255 ) / 255;
    		this.b = ( hex & 255 ) / 255;
    		return this;
    	}
    	setRGB( r, g, b ) {
    		this.r = r;
    		this.g = g;
    		this.b = b;
    		return this;
    	}
    	setHSL( h, s, l ) {
    		h = MathUtils.euclideanModulo( h, 1 );
    		s = MathUtils.clamp( s, 0, 1 );
    		l = MathUtils.clamp( l, 0, 1 );
    		if ( s === 0 ) {
    			this.r = this.g = this.b = l;
    		} else {
    			const p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
    			const q = ( 2 * l ) - p;
    			this.r = hue2rgb( q, p, h + 1 / 3 );
    			this.g = hue2rgb( q, p, h );
    			this.b = hue2rgb( q, p, h - 1 / 3 );
    		}
    		return this;
    	}
    	setStyle( style ) {
    		function handleAlpha( string ) {
    			if ( string === undefined ) return;
    			if ( parseFloat( string ) < 1 ) {
    				console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );
    			}
    		}
    		let m;
    		if ( m = /^((?:rgb|hsl)a?)\(\s*([^\)]*)\)/.exec( style ) ) {
    			let color;
    			const name = m[ 1 ];
    			const components = m[ 2 ];
    			switch ( name ) {
    				case 'rgb':
    				case 'rgba':
    					if ( color = /^(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
    						this.r = Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255;
    						this.g = Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255;
    						this.b = Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255;
    						handleAlpha( color[ 5 ] );
    						return this;
    					}
    					if ( color = /^(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
    						this.r = Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100;
    						this.g = Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100;
    						this.b = Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100;
    						handleAlpha( color[ 5 ] );
    						return this;
    					}
    					break;
    				case 'hsl':
    				case 'hsla':
    					if ( color = /^([0-9]*\.?[0-9]+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(,\s*([0-9]*\.?[0-9]+)\s*)?$/.exec( components ) ) {
    						const h = parseFloat( color[ 1 ] ) / 360;
    						const s = parseInt( color[ 2 ], 10 ) / 100;
    						const l = parseInt( color[ 3 ], 10 ) / 100;
    						handleAlpha( color[ 5 ] );
    						return this.setHSL( h, s, l );
    					}
    					break;
    			}
    		} else if ( m = /^\#([A-Fa-f0-9]+)$/.exec( style ) ) {
    			const hex = m[ 1 ];
    			const size = hex.length;
    			if ( size === 3 ) {
    				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 0 ), 16 ) / 255;
    				this.g = parseInt( hex.charAt( 1 ) + hex.charAt( 1 ), 16 ) / 255;
    				this.b = parseInt( hex.charAt( 2 ) + hex.charAt( 2 ), 16 ) / 255;
    				return this;
    			} else if ( size === 6 ) {
    				this.r = parseInt( hex.charAt( 0 ) + hex.charAt( 1 ), 16 ) / 255;
    				this.g = parseInt( hex.charAt( 2 ) + hex.charAt( 3 ), 16 ) / 255;
    				this.b = parseInt( hex.charAt( 4 ) + hex.charAt( 5 ), 16 ) / 255;
    				return this;
    			}
    		}
    		if ( style && style.length > 0 ) {
    			return this.setColorName( style );
    		}
    		return this;
    	}
    	setColorName( style ) {
    		const hex = _colorKeywords[ style ];
    		if ( hex !== undefined ) {
    			this.setHex( hex );
    		} else {
    			console.warn( 'THREE.Color: Unknown color ' + style );
    		}
    		return this;
    	}
    	clone() {
    		return new this.constructor( this.r, this.g, this.b );
    	}
    	copy( color ) {
    		this.r = color.r;
    		this.g = color.g;
    		this.b = color.b;
    		return this;
    	}
    	copyGammaToLinear( color, gammaFactor ) {
    		if ( gammaFactor === undefined ) gammaFactor = 2.0;
    		this.r = Math.pow( color.r, gammaFactor );
    		this.g = Math.pow( color.g, gammaFactor );
    		this.b = Math.pow( color.b, gammaFactor );
    		return this;
    	}
    	copyLinearToGamma( color, gammaFactor ) {
    		if ( gammaFactor === undefined ) gammaFactor = 2.0;
    		const safeInverse = ( gammaFactor > 0 ) ? ( 1.0 / gammaFactor ) : 1.0;
    		this.r = Math.pow( color.r, safeInverse );
    		this.g = Math.pow( color.g, safeInverse );
    		this.b = Math.pow( color.b, safeInverse );
    		return this;
    	}
    	convertGammaToLinear( gammaFactor ) {
    		this.copyGammaToLinear( this, gammaFactor );
    		return this;
    	}
    	convertLinearToGamma( gammaFactor ) {
    		this.copyLinearToGamma( this, gammaFactor );
    		return this;
    	}
    	copySRGBToLinear( color ) {
    		this.r = SRGBToLinear( color.r );
    		this.g = SRGBToLinear( color.g );
    		this.b = SRGBToLinear( color.b );
    		return this;
    	}
    	copyLinearToSRGB( color ) {
    		this.r = LinearToSRGB( color.r );
    		this.g = LinearToSRGB( color.g );
    		this.b = LinearToSRGB( color.b );
    		return this;
    	}
    	convertSRGBToLinear() {
    		this.copySRGBToLinear( this );
    		return this;
    	}
    	convertLinearToSRGB() {
    		this.copyLinearToSRGB( this );
    		return this;
    	}
    	getHex() {
    		return ( this.r * 255 ) << 16 ^ ( this.g * 255 ) << 8 ^ ( this.b * 255 ) << 0;
    	}
    	getHexString() {
    		return ( '000000' + this.getHex().toString( 16 ) ).slice( - 6 );
    	}
    	getHSL( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Color: .getHSL() target is now required' );
    			target = { h: 0, s: 0, l: 0 };
    		}
    		const r = this.r, g = this.g, b = this.b;
    		const max = Math.max( r, g, b );
    		const min = Math.min( r, g, b );
    		let hue, saturation;
    		const lightness = ( min + max ) / 2.0;
    		if ( min === max ) {
    			hue = 0;
    			saturation = 0;
    		} else {
    			const delta = max - min;
    			saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );
    			switch ( max ) {
    				case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
    				case g: hue = ( b - r ) / delta + 2; break;
    				case b: hue = ( r - g ) / delta + 4; break;
    			}
    			hue /= 6;
    		}
    		target.h = hue;
    		target.s = saturation;
    		target.l = lightness;
    		return target;
    	}
    	getStyle() {
    		return 'rgb(' + ( ( this.r * 255 ) | 0 ) + ',' + ( ( this.g * 255 ) | 0 ) + ',' + ( ( this.b * 255 ) | 0 ) + ')';
    	}
    	offsetHSL( h, s, l ) {
    		this.getHSL( _hslA );
    		_hslA.h += h; _hslA.s += s; _hslA.l += l;
    		this.setHSL( _hslA.h, _hslA.s, _hslA.l );
    		return this;
    	}
    	add( color ) {
    		this.r += color.r;
    		this.g += color.g;
    		this.b += color.b;
    		return this;
    	}
    	addColors( color1, color2 ) {
    		this.r = color1.r + color2.r;
    		this.g = color1.g + color2.g;
    		this.b = color1.b + color2.b;
    		return this;
    	}
    	addScalar( s ) {
    		this.r += s;
    		this.g += s;
    		this.b += s;
    		return this;
    	}
    	sub( color ) {
    		this.r = Math.max( 0, this.r - color.r );
    		this.g = Math.max( 0, this.g - color.g );
    		this.b = Math.max( 0, this.b - color.b );
    		return this;
    	}
    	multiply( color ) {
    		this.r *= color.r;
    		this.g *= color.g;
    		this.b *= color.b;
    		return this;
    	}
    	multiplyScalar( s ) {
    		this.r *= s;
    		this.g *= s;
    		this.b *= s;
    		return this;
    	}
    	lerp( color, alpha ) {
    		this.r += ( color.r - this.r ) * alpha;
    		this.g += ( color.g - this.g ) * alpha;
    		this.b += ( color.b - this.b ) * alpha;
    		return this;
    	}
    	lerpHSL( color, alpha ) {
    		this.getHSL( _hslA );
    		color.getHSL( _hslB );
    		const h = MathUtils.lerp( _hslA.h, _hslB.h, alpha );
    		const s = MathUtils.lerp( _hslA.s, _hslB.s, alpha );
    		const l = MathUtils.lerp( _hslA.l, _hslB.l, alpha );
    		this.setHSL( h, s, l );
    		return this;
    	}
    	equals( c ) {
    		return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this.r = array[ offset ];
    		this.g = array[ offset + 1 ];
    		this.b = array[ offset + 2 ];
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		array[ offset ] = this.r;
    		array[ offset + 1 ] = this.g;
    		array[ offset + 2 ] = this.b;
    		return array;
    	}
    	fromBufferAttribute( attribute, index ) {
    		this.r = attribute.getX( index );
    		this.g = attribute.getY( index );
    		this.b = attribute.getZ( index );
    		if ( attribute.normalized === true ) {
    			this.r /= 255;
    			this.g /= 255;
    			this.b /= 255;
    		}
    		return this;
    	}
    	toJSON() {
    		return this.getHex();
    	}
    }
    Color.NAMES = _colorKeywords;
    Color.prototype.r = 1;
    Color.prototype.g = 1;
    Color.prototype.b = 1;
    class Face3 {
    	constructor( a, b, c, normal, color, materialIndex ) {
    		this.a = a;
    		this.b = b;
    		this.c = c;
    		this.normal = ( normal && normal.isVector3 ) ? normal : new Vector3();
    		this.vertexNormals = Array.isArray( normal ) ? normal : [];
    		this.color = ( color && color.isColor ) ? color : new Color();
    		this.vertexColors = Array.isArray( color ) ? color : [];
    		this.materialIndex = materialIndex !== undefined ? materialIndex : 0;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( source ) {
    		this.a = source.a;
    		this.b = source.b;
    		this.c = source.c;
    		this.normal.copy( source.normal );
    		this.color.copy( source.color );
    		this.materialIndex = source.materialIndex;
    		for ( let i = 0, il = source.vertexNormals.length; i < il; i ++ ) {
    			this.vertexNormals[ i ] = source.vertexNormals[ i ].clone();
    		}
    		for ( let i = 0, il = source.vertexColors.length; i < il; i ++ ) {
    			this.vertexColors[ i ] = source.vertexColors[ i ].clone();
    		}
    		return this;
    	}
    }
    let materialId = 0;
    function Material() {
    	Object.defineProperty( this, 'id', { value: materialId ++ } );
    	this.uuid = MathUtils.generateUUID();
    	this.name = '';
    	this.type = 'Material';
    	this.fog = true;
    	this.blending = NormalBlending;
    	this.side = FrontSide;
    	this.flatShading = false;
    	this.vertexColors = false;
    	this.opacity = 1;
    	this.transparent = false;
    	this.blendSrc = SrcAlphaFactor;
    	this.blendDst = OneMinusSrcAlphaFactor;
    	this.blendEquation = AddEquation;
    	this.blendSrcAlpha = null;
    	this.blendDstAlpha = null;
    	this.blendEquationAlpha = null;
    	this.depthFunc = LessEqualDepth;
    	this.depthTest = true;
    	this.depthWrite = true;
    	this.stencilWriteMask = 0xff;
    	this.stencilFunc = AlwaysStencilFunc;
    	this.stencilRef = 0;
    	this.stencilFuncMask = 0xff;
    	this.stencilFail = KeepStencilOp;
    	this.stencilZFail = KeepStencilOp;
    	this.stencilZPass = KeepStencilOp;
    	this.stencilWrite = false;
    	this.clippingPlanes = null;
    	this.clipIntersection = false;
    	this.clipShadows = false;
    	this.shadowSide = null;
    	this.colorWrite = true;
    	this.precision = null;
    	this.polygonOffset = false;
    	this.polygonOffsetFactor = 0;
    	this.polygonOffsetUnits = 0;
    	this.dithering = false;
    	this.alphaTest = 0;
    	this.premultipliedAlpha = false;
    	this.visible = true;
    	this.toneMapped = true;
    	this.userData = {};
    	this.version = 0;
    }
    Material.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
    	constructor: Material,
    	isMaterial: true,
    	onBeforeCompile: function (  ) {},
    	customProgramCacheKey: function () {
    		return this.onBeforeCompile.toString();
    	},
    	setValues: function ( values ) {
    		if ( values === undefined ) return;
    		for ( const key in values ) {
    			const newValue = values[ key ];
    			if ( newValue === undefined ) {
    				console.warn( "THREE.Material: '" + key + "' parameter is undefined." );
    				continue;
    			}
    			if ( key === 'shading' ) {
    				console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
    				this.flatShading = ( newValue === FlatShading ) ? true : false;
    				continue;
    			}
    			const currentValue = this[ key ];
    			if ( currentValue === undefined ) {
    				console.warn( "THREE." + this.type + ": '" + key + "' is not a property of this material." );
    				continue;
    			}
    			if ( currentValue && currentValue.isColor ) {
    				currentValue.set( newValue );
    			} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {
    				currentValue.copy( newValue );
    			} else {
    				this[ key ] = newValue;
    			}
    		}
    	},
    	toJSON: function ( meta ) {
    		const isRoot = ( meta === undefined || typeof meta === 'string' );
    		if ( isRoot ) {
    			meta = {
    				textures: {},
    				images: {}
    			};
    		}
    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'Material',
    				generator: 'Material.toJSON'
    			}
    		};
    		data.uuid = this.uuid;
    		data.type = this.type;
    		if ( this.name !== '' ) data.name = this.name;
    		if ( this.color && this.color.isColor ) data.color = this.color.getHex();
    		if ( this.roughness !== undefined ) data.roughness = this.roughness;
    		if ( this.metalness !== undefined ) data.metalness = this.metalness;
    		if ( this.sheen && this.sheen.isColor ) data.sheen = this.sheen.getHex();
    		if ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();
    		if ( this.emissiveIntensity && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;
    		if ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();
    		if ( this.shininess !== undefined ) data.shininess = this.shininess;
    		if ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;
    		if ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;
    		if ( this.clearcoatMap && this.clearcoatMap.isTexture ) {
    			data.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;
    		}
    		if ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {
    			data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;
    		}
    		if ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {
    			data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;
    			data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
    		}
    		if ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;
    		if ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;
    		if ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;
    		if ( this.lightMap && this.lightMap.isTexture ) data.lightMap = this.lightMap.toJSON( meta ).uuid;
    		if ( this.aoMap && this.aoMap.isTexture ) {
    			data.aoMap = this.aoMap.toJSON( meta ).uuid;
    			data.aoMapIntensity = this.aoMapIntensity;
    		}
    		if ( this.bumpMap && this.bumpMap.isTexture ) {
    			data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
    			data.bumpScale = this.bumpScale;
    		}
    		if ( this.normalMap && this.normalMap.isTexture ) {
    			data.normalMap = this.normalMap.toJSON( meta ).uuid;
    			data.normalMapType = this.normalMapType;
    			data.normalScale = this.normalScale.toArray();
    		}
    		if ( this.displacementMap && this.displacementMap.isTexture ) {
    			data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
    			data.displacementScale = this.displacementScale;
    			data.displacementBias = this.displacementBias;
    		}
    		if ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
    		if ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;
    		if ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
    		if ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;
    		if ( this.envMap && this.envMap.isTexture ) {
    			data.envMap = this.envMap.toJSON( meta ).uuid;
    			data.reflectivity = this.reflectivity;
    			data.refractionRatio = this.refractionRatio;
    			if ( this.combine !== undefined ) data.combine = this.combine;
    			if ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;
    		}
    		if ( this.gradientMap && this.gradientMap.isTexture ) {
    			data.gradientMap = this.gradientMap.toJSON( meta ).uuid;
    		}
    		if ( this.size !== undefined ) data.size = this.size;
    		if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;
    		if ( this.blending !== NormalBlending ) data.blending = this.blending;
    		if ( this.flatShading === true ) data.flatShading = this.flatShading;
    		if ( this.side !== FrontSide ) data.side = this.side;
    		if ( this.vertexColors ) data.vertexColors = true;
    		if ( this.opacity < 1 ) data.opacity = this.opacity;
    		if ( this.transparent === true ) data.transparent = this.transparent;
    		data.depthFunc = this.depthFunc;
    		data.depthTest = this.depthTest;
    		data.depthWrite = this.depthWrite;
    		data.stencilWrite = this.stencilWrite;
    		data.stencilWriteMask = this.stencilWriteMask;
    		data.stencilFunc = this.stencilFunc;
    		data.stencilRef = this.stencilRef;
    		data.stencilFuncMask = this.stencilFuncMask;
    		data.stencilFail = this.stencilFail;
    		data.stencilZFail = this.stencilZFail;
    		data.stencilZPass = this.stencilZPass;
    		if ( this.rotation && this.rotation !== 0 ) data.rotation = this.rotation;
    		if ( this.polygonOffset === true ) data.polygonOffset = true;
    		if ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;
    		if ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;
    		if ( this.linewidth && this.linewidth !== 1 ) data.linewidth = this.linewidth;
    		if ( this.dashSize !== undefined ) data.dashSize = this.dashSize;
    		if ( this.gapSize !== undefined ) data.gapSize = this.gapSize;
    		if ( this.scale !== undefined ) data.scale = this.scale;
    		if ( this.dithering === true ) data.dithering = true;
    		if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
    		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;
    		if ( this.wireframe === true ) data.wireframe = this.wireframe;
    		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
    		if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
    		if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;
    		if ( this.morphTargets === true ) data.morphTargets = true;
    		if ( this.morphNormals === true ) data.morphNormals = true;
    		if ( this.skinning === true ) data.skinning = true;
    		if ( this.visible === false ) data.visible = false;
    		if ( this.toneMapped === false ) data.toneMapped = false;
    		if ( JSON.stringify( this.userData ) !== '{}' ) data.userData = this.userData;
    		function extractFromCache( cache ) {
    			const values = [];
    			for ( const key in cache ) {
    				const data = cache[ key ];
    				delete data.metadata;
    				values.push( data );
    			}
    			return values;
    		}
    		if ( isRoot ) {
    			const textures = extractFromCache( meta.textures );
    			const images = extractFromCache( meta.images );
    			if ( textures.length > 0 ) data.textures = textures;
    			if ( images.length > 0 ) data.images = images;
    		}
    		return data;
    	},
    	clone: function () {
    		return new this.constructor().copy( this );
    	},
    	copy: function ( source ) {
    		this.name = source.name;
    		this.fog = source.fog;
    		this.blending = source.blending;
    		this.side = source.side;
    		this.flatShading = source.flatShading;
    		this.vertexColors = source.vertexColors;
    		this.opacity = source.opacity;
    		this.transparent = source.transparent;
    		this.blendSrc = source.blendSrc;
    		this.blendDst = source.blendDst;
    		this.blendEquation = source.blendEquation;
    		this.blendSrcAlpha = source.blendSrcAlpha;
    		this.blendDstAlpha = source.blendDstAlpha;
    		this.blendEquationAlpha = source.blendEquationAlpha;
    		this.depthFunc = source.depthFunc;
    		this.depthTest = source.depthTest;
    		this.depthWrite = source.depthWrite;
    		this.stencilWriteMask = source.stencilWriteMask;
    		this.stencilFunc = source.stencilFunc;
    		this.stencilRef = source.stencilRef;
    		this.stencilFuncMask = source.stencilFuncMask;
    		this.stencilFail = source.stencilFail;
    		this.stencilZFail = source.stencilZFail;
    		this.stencilZPass = source.stencilZPass;
    		this.stencilWrite = source.stencilWrite;
    		const srcPlanes = source.clippingPlanes;
    		let dstPlanes = null;
    		if ( srcPlanes !== null ) {
    			const n = srcPlanes.length;
    			dstPlanes = new Array( n );
    			for ( let i = 0; i !== n; ++ i ) {
    				dstPlanes[ i ] = srcPlanes[ i ].clone();
    			}
    		}
    		this.clippingPlanes = dstPlanes;
    		this.clipIntersection = source.clipIntersection;
    		this.clipShadows = source.clipShadows;
    		this.shadowSide = source.shadowSide;
    		this.colorWrite = source.colorWrite;
    		this.precision = source.precision;
    		this.polygonOffset = source.polygonOffset;
    		this.polygonOffsetFactor = source.polygonOffsetFactor;
    		this.polygonOffsetUnits = source.polygonOffsetUnits;
    		this.dithering = source.dithering;
    		this.alphaTest = source.alphaTest;
    		this.premultipliedAlpha = source.premultipliedAlpha;
    		this.visible = source.visible;
    		this.toneMapped = source.toneMapped;
    		this.userData = JSON.parse( JSON.stringify( source.userData ) );
    		return this;
    	},
    	dispose: function () {
    		this.dispatchEvent( { type: 'dispose' } );
    	}
    } );
    Object.defineProperty( Material.prototype, 'needsUpdate', {
    	set: function ( value ) {
    		if ( value === true ) this.version ++;
    	}
    } );
    function MeshBasicMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'MeshBasicMaterial';
    	this.color = new Color( 0xffffff );
    	this.map = null;
    	this.lightMap = null;
    	this.lightMapIntensity = 1.0;
    	this.aoMap = null;
    	this.aoMapIntensity = 1.0;
    	this.specularMap = null;
    	this.alphaMap = null;
    	this.envMap = null;
    	this.combine = MultiplyOperation;
    	this.reflectivity = 1;
    	this.refractionRatio = 0.98;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.wireframeLinecap = 'round';
    	this.wireframeLinejoin = 'round';
    	this.skinning = false;
    	this.morphTargets = false;
    	this.setValues( parameters );
    }
    MeshBasicMaterial.prototype = Object.create( Material.prototype );
    MeshBasicMaterial.prototype.constructor = MeshBasicMaterial;
    MeshBasicMaterial.prototype.isMeshBasicMaterial = true;
    MeshBasicMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	this.map = source.map;
    	this.lightMap = source.lightMap;
    	this.lightMapIntensity = source.lightMapIntensity;
    	this.aoMap = source.aoMap;
    	this.aoMapIntensity = source.aoMapIntensity;
    	this.specularMap = source.specularMap;
    	this.alphaMap = source.alphaMap;
    	this.envMap = source.envMap;
    	this.combine = source.combine;
    	this.reflectivity = source.reflectivity;
    	this.refractionRatio = source.refractionRatio;
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	this.wireframeLinecap = source.wireframeLinecap;
    	this.wireframeLinejoin = source.wireframeLinejoin;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	return this;
    };
    const _vector$3 = new Vector3();
    const _vector2$1 = new Vector2();
    function BufferAttribute( array, itemSize, normalized ) {
    	if ( Array.isArray( array ) ) {
    		throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );
    	}
    	this.name = '';
    	this.array = array;
    	this.itemSize = itemSize;
    	this.count = array !== undefined ? array.length / itemSize : 0;
    	this.normalized = normalized === true;
    	this.usage = StaticDrawUsage;
    	this.updateRange = { offset: 0, count: - 1 };
    	this.version = 0;
    }
    Object.defineProperty( BufferAttribute.prototype, 'needsUpdate', {
    	set: function ( value ) {
    		if ( value === true ) this.version ++;
    	}
    } );
    Object.assign( BufferAttribute.prototype, {
    	isBufferAttribute: true,
    	onUploadCallback: function () {},
    	setUsage: function ( value ) {
    		this.usage = value;
    		return this;
    	},
    	copy: function ( source ) {
    		this.name = source.name;
    		this.array = new source.array.constructor( source.array );
    		this.itemSize = source.itemSize;
    		this.count = source.count;
    		this.normalized = source.normalized;
    		this.usage = source.usage;
    		return this;
    	},
    	copyAt: function ( index1, attribute, index2 ) {
    		index1 *= this.itemSize;
    		index2 *= attribute.itemSize;
    		for ( let i = 0, l = this.itemSize; i < l; i ++ ) {
    			this.array[ index1 + i ] = attribute.array[ index2 + i ];
    		}
    		return this;
    	},
    	copyArray: function ( array ) {
    		this.array.set( array );
    		return this;
    	},
    	copyColorsArray: function ( colors ) {
    		const array = this.array;
    		let offset = 0;
    		for ( let i = 0, l = colors.length; i < l; i ++ ) {
    			let color = colors[ i ];
    			if ( color === undefined ) {
    				console.warn( 'THREE.BufferAttribute.copyColorsArray(): color is undefined', i );
    				color = new Color();
    			}
    			array[ offset ++ ] = color.r;
    			array[ offset ++ ] = color.g;
    			array[ offset ++ ] = color.b;
    		}
    		return this;
    	},
    	copyVector2sArray: function ( vectors ) {
    		const array = this.array;
    		let offset = 0;
    		for ( let i = 0, l = vectors.length; i < l; i ++ ) {
    			let vector = vectors[ i ];
    			if ( vector === undefined ) {
    				console.warn( 'THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i );
    				vector = new Vector2();
    			}
    			array[ offset ++ ] = vector.x;
    			array[ offset ++ ] = vector.y;
    		}
    		return this;
    	},
    	copyVector3sArray: function ( vectors ) {
    		const array = this.array;
    		let offset = 0;
    		for ( let i = 0, l = vectors.length; i < l; i ++ ) {
    			let vector = vectors[ i ];
    			if ( vector === undefined ) {
    				console.warn( 'THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i );
    				vector = new Vector3();
    			}
    			array[ offset ++ ] = vector.x;
    			array[ offset ++ ] = vector.y;
    			array[ offset ++ ] = vector.z;
    		}
    		return this;
    	},
    	copyVector4sArray: function ( vectors ) {
    		const array = this.array;
    		let offset = 0;
    		for ( let i = 0, l = vectors.length; i < l; i ++ ) {
    			let vector = vectors[ i ];
    			if ( vector === undefined ) {
    				console.warn( 'THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i );
    				vector = new Vector4();
    			}
    			array[ offset ++ ] = vector.x;
    			array[ offset ++ ] = vector.y;
    			array[ offset ++ ] = vector.z;
    			array[ offset ++ ] = vector.w;
    		}
    		return this;
    	},
    	applyMatrix3: function ( m ) {
    		if ( this.itemSize === 2 ) {
    			for ( let i = 0, l = this.count; i < l; i ++ ) {
    				_vector2$1.fromBufferAttribute( this, i );
    				_vector2$1.applyMatrix3( m );
    				this.setXY( i, _vector2$1.x, _vector2$1.y );
    			}
    		} else if ( this.itemSize === 3 ) {
    			for ( let i = 0, l = this.count; i < l; i ++ ) {
    				_vector$3.fromBufferAttribute( this, i );
    				_vector$3.applyMatrix3( m );
    				this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
    			}
    		}
    		return this;
    	},
    	applyMatrix4: function ( m ) {
    		for ( let i = 0, l = this.count; i < l; i ++ ) {
    			_vector$3.x = this.getX( i );
    			_vector$3.y = this.getY( i );
    			_vector$3.z = this.getZ( i );
    			_vector$3.applyMatrix4( m );
    			this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
    		}
    		return this;
    	},
    	applyNormalMatrix: function ( m ) {
    		for ( let i = 0, l = this.count; i < l; i ++ ) {
    			_vector$3.x = this.getX( i );
    			_vector$3.y = this.getY( i );
    			_vector$3.z = this.getZ( i );
    			_vector$3.applyNormalMatrix( m );
    			this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
    		}
    		return this;
    	},
    	transformDirection: function ( m ) {
    		for ( let i = 0, l = this.count; i < l; i ++ ) {
    			_vector$3.x = this.getX( i );
    			_vector$3.y = this.getY( i );
    			_vector$3.z = this.getZ( i );
    			_vector$3.transformDirection( m );
    			this.setXYZ( i, _vector$3.x, _vector$3.y, _vector$3.z );
    		}
    		return this;
    	},
    	set: function ( value, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this.array.set( value, offset );
    		return this;
    	},
    	getX: function ( index ) {
    		return this.array[ index * this.itemSize ];
    	},
    	setX: function ( index, x ) {
    		this.array[ index * this.itemSize ] = x;
    		return this;
    	},
    	getY: function ( index ) {
    		return this.array[ index * this.itemSize + 1 ];
    	},
    	setY: function ( index, y ) {
    		this.array[ index * this.itemSize + 1 ] = y;
    		return this;
    	},
    	getZ: function ( index ) {
    		return this.array[ index * this.itemSize + 2 ];
    	},
    	setZ: function ( index, z ) {
    		this.array[ index * this.itemSize + 2 ] = z;
    		return this;
    	},
    	getW: function ( index ) {
    		return this.array[ index * this.itemSize + 3 ];
    	},
    	setW: function ( index, w ) {
    		this.array[ index * this.itemSize + 3 ] = w;
    		return this;
    	},
    	setXY: function ( index, x, y ) {
    		index *= this.itemSize;
    		this.array[ index + 0 ] = x;
    		this.array[ index + 1 ] = y;
    		return this;
    	},
    	setXYZ: function ( index, x, y, z ) {
    		index *= this.itemSize;
    		this.array[ index + 0 ] = x;
    		this.array[ index + 1 ] = y;
    		this.array[ index + 2 ] = z;
    		return this;
    	},
    	setXYZW: function ( index, x, y, z, w ) {
    		index *= this.itemSize;
    		this.array[ index + 0 ] = x;
    		this.array[ index + 1 ] = y;
    		this.array[ index + 2 ] = z;
    		this.array[ index + 3 ] = w;
    		return this;
    	},
    	onUpload: function ( callback ) {
    		this.onUploadCallback = callback;
    		return this;
    	},
    	clone: function () {
    		return new this.constructor( this.array, this.itemSize ).copy( this );
    	},
    	toJSON: function () {
    		return {
    			itemSize: this.itemSize,
    			type: this.array.constructor.name,
    			array: Array.prototype.slice.call( this.array ),
    			normalized: this.normalized
    		};
    	}
    } );
    function Int8BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Int8Array( array ), itemSize, normalized );
    }
    Int8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Int8BufferAttribute.prototype.constructor = Int8BufferAttribute;
    function Uint8BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Uint8Array( array ), itemSize, normalized );
    }
    Uint8BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Uint8BufferAttribute.prototype.constructor = Uint8BufferAttribute;
    function Uint8ClampedBufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Uint8ClampedArray( array ), itemSize, normalized );
    }
    Uint8ClampedBufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Uint8ClampedBufferAttribute.prototype.constructor = Uint8ClampedBufferAttribute;
    function Int16BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Int16Array( array ), itemSize, normalized );
    }
    Int16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Int16BufferAttribute.prototype.constructor = Int16BufferAttribute;
    function Uint16BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Uint16Array( array ), itemSize, normalized );
    }
    Uint16BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Uint16BufferAttribute.prototype.constructor = Uint16BufferAttribute;
    function Int32BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Int32Array( array ), itemSize, normalized );
    }
    Int32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Int32BufferAttribute.prototype.constructor = Int32BufferAttribute;
    function Uint32BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Uint32Array( array ), itemSize, normalized );
    }
    Uint32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Uint32BufferAttribute.prototype.constructor = Uint32BufferAttribute;
    function Float32BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Float32Array( array ), itemSize, normalized );
    }
    Float32BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Float32BufferAttribute.prototype.constructor = Float32BufferAttribute;
    function Float64BufferAttribute( array, itemSize, normalized ) {
    	BufferAttribute.call( this, new Float64Array( array ), itemSize, normalized );
    }
    Float64BufferAttribute.prototype = Object.create( BufferAttribute.prototype );
    Float64BufferAttribute.prototype.constructor = Float64BufferAttribute;
    class DirectGeometry {
    	constructor() {
    		this.vertices = [];
    		this.normals = [];
    		this.colors = [];
    		this.uvs = [];
    		this.uvs2 = [];
    		this.groups = [];
    		this.morphTargets = {};
    		this.skinWeights = [];
    		this.skinIndices = [];
    		this.boundingBox = null;
    		this.boundingSphere = null;
    		this.verticesNeedUpdate = false;
    		this.normalsNeedUpdate = false;
    		this.colorsNeedUpdate = false;
    		this.uvsNeedUpdate = false;
    		this.groupsNeedUpdate = false;
    	}
    	computeGroups( geometry ) {
    		const groups = [];
    		let group, i;
    		let materialIndex = undefined;
    		const faces = geometry.faces;
    		for ( i = 0; i < faces.length; i ++ ) {
    			const face = faces[ i ];
    			if ( face.materialIndex !== materialIndex ) {
    				materialIndex = face.materialIndex;
    				if ( group !== undefined ) {
    					group.count = ( i * 3 ) - group.start;
    					groups.push( group );
    				}
    				group = {
    					start: i * 3,
    					materialIndex: materialIndex
    				};
    			}
    		}
    		if ( group !== undefined ) {
    			group.count = ( i * 3 ) - group.start;
    			groups.push( group );
    		}
    		this.groups = groups;
    	}
    	fromGeometry( geometry ) {
    		const faces = geometry.faces;
    		const vertices = geometry.vertices;
    		const faceVertexUvs = geometry.faceVertexUvs;
    		const hasFaceVertexUv = faceVertexUvs[ 0 ] && faceVertexUvs[ 0 ].length > 0;
    		const hasFaceVertexUv2 = faceVertexUvs[ 1 ] && faceVertexUvs[ 1 ].length > 0;
    		const morphTargets = geometry.morphTargets;
    		const morphTargetsLength = morphTargets.length;
    		let morphTargetsPosition;
    		if ( morphTargetsLength > 0 ) {
    			morphTargetsPosition = [];
    			for ( let i = 0; i < morphTargetsLength; i ++ ) {
    				morphTargetsPosition[ i ] = {
    					name: morphTargets[ i ].name,
    				 	data: []
    				};
    			}
    			this.morphTargets.position = morphTargetsPosition;
    		}
    		const morphNormals = geometry.morphNormals;
    		const morphNormalsLength = morphNormals.length;
    		let morphTargetsNormal;
    		if ( morphNormalsLength > 0 ) {
    			morphTargetsNormal = [];
    			for ( let i = 0; i < morphNormalsLength; i ++ ) {
    				morphTargetsNormal[ i ] = {
    					name: morphNormals[ i ].name,
    				 	data: []
    				};
    			}
    			this.morphTargets.normal = morphTargetsNormal;
    		}
    		const skinIndices = geometry.skinIndices;
    		const skinWeights = geometry.skinWeights;
    		const hasSkinIndices = skinIndices.length === vertices.length;
    		const hasSkinWeights = skinWeights.length === vertices.length;
    		if ( vertices.length > 0 && faces.length === 0 ) {
    			console.error( 'THREE.DirectGeometry: Faceless geometries are not supported.' );
    		}
    		for ( let i = 0; i < faces.length; i ++ ) {
    			const face = faces[ i ];
    			this.vertices.push( vertices[ face.a ], vertices[ face.b ], vertices[ face.c ] );
    			const vertexNormals = face.vertexNormals;
    			if ( vertexNormals.length === 3 ) {
    				this.normals.push( vertexNormals[ 0 ], vertexNormals[ 1 ], vertexNormals[ 2 ] );
    			} else {
    				const normal = face.normal;
    				this.normals.push( normal, normal, normal );
    			}
    			const vertexColors = face.vertexColors;
    			if ( vertexColors.length === 3 ) {
    				this.colors.push( vertexColors[ 0 ], vertexColors[ 1 ], vertexColors[ 2 ] );
    			} else {
    				const color = face.color;
    				this.colors.push( color, color, color );
    			}
    			if ( hasFaceVertexUv === true ) {
    				const vertexUvs = faceVertexUvs[ 0 ][ i ];
    				if ( vertexUvs !== undefined ) {
    					this.uvs.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
    				} else {
    					console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv ', i );
    					this.uvs.push( new Vector2(), new Vector2(), new Vector2() );
    				}
    			}
    			if ( hasFaceVertexUv2 === true ) {
    				const vertexUvs = faceVertexUvs[ 1 ][ i ];
    				if ( vertexUvs !== undefined ) {
    					this.uvs2.push( vertexUvs[ 0 ], vertexUvs[ 1 ], vertexUvs[ 2 ] );
    				} else {
    					console.warn( 'THREE.DirectGeometry.fromGeometry(): Undefined vertexUv2 ', i );
    					this.uvs2.push( new Vector2(), new Vector2(), new Vector2() );
    				}
    			}
    			for ( let j = 0; j < morphTargetsLength; j ++ ) {
    				const morphTarget = morphTargets[ j ].vertices;
    				morphTargetsPosition[ j ].data.push( morphTarget[ face.a ], morphTarget[ face.b ], morphTarget[ face.c ] );
    			}
    			for ( let j = 0; j < morphNormalsLength; j ++ ) {
    				const morphNormal = morphNormals[ j ].vertexNormals[ i ];
    				morphTargetsNormal[ j ].data.push( morphNormal.a, morphNormal.b, morphNormal.c );
    			}
    			if ( hasSkinIndices ) {
    				this.skinIndices.push( skinIndices[ face.a ], skinIndices[ face.b ], skinIndices[ face.c ] );
    			}
    			if ( hasSkinWeights ) {
    				this.skinWeights.push( skinWeights[ face.a ], skinWeights[ face.b ], skinWeights[ face.c ] );
    			}
    		}
    		this.computeGroups( geometry );
    		this.verticesNeedUpdate = geometry.verticesNeedUpdate;
    		this.normalsNeedUpdate = geometry.normalsNeedUpdate;
    		this.colorsNeedUpdate = geometry.colorsNeedUpdate;
    		this.uvsNeedUpdate = geometry.uvsNeedUpdate;
    		this.groupsNeedUpdate = geometry.groupsNeedUpdate;
    		if ( geometry.boundingSphere !== null ) {
    			this.boundingSphere = geometry.boundingSphere.clone();
    		}
    		if ( geometry.boundingBox !== null ) {
    			this.boundingBox = geometry.boundingBox.clone();
    		}
    		return this;
    	}
    }
    function arrayMax( array ) {
    	if ( array.length === 0 ) return - Infinity;
    	let max = array[ 0 ];
    	for ( let i = 1, l = array.length; i < l; ++ i ) {
    		if ( array[ i ] > max ) max = array[ i ];
    	}
    	return max;
    }
    let _bufferGeometryId = 1;
    const _m1$2 = new Matrix4();
    const _obj = new Object3D();
    const _offset = new Vector3();
    const _box$2 = new Box3();
    const _boxMorphTargets = new Box3();
    const _vector$4 = new Vector3();
    function BufferGeometry() {
    	Object.defineProperty( this, 'id', { value: _bufferGeometryId += 2 } );
    	this.uuid = MathUtils.generateUUID();
    	this.name = '';
    	this.type = 'BufferGeometry';
    	this.index = null;
    	this.attributes = {};
    	this.morphAttributes = {};
    	this.morphTargetsRelative = false;
    	this.groups = [];
    	this.boundingBox = null;
    	this.boundingSphere = null;
    	this.drawRange = { start: 0, count: Infinity };
    	this.userData = {};
    }
    BufferGeometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
    	constructor: BufferGeometry,
    	isBufferGeometry: true,
    	getIndex: function () {
    		return this.index;
    	},
    	setIndex: function ( index ) {
    		if ( Array.isArray( index ) ) {
    			this.index = new ( arrayMax( index ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );
    		} else {
    			this.index = index;
    		}
    	},
    	getAttribute: function ( name ) {
    		return this.attributes[ name ];
    	},
    	setAttribute: function ( name, attribute ) {
    		this.attributes[ name ] = attribute;
    		return this;
    	},
    	deleteAttribute: function ( name ) {
    		delete this.attributes[ name ];
    		return this;
    	},
    	addGroup: function ( start, count, materialIndex ) {
    		this.groups.push( {
    			start: start,
    			count: count,
    			materialIndex: materialIndex !== undefined ? materialIndex : 0
    		} );
    	},
    	clearGroups: function () {
    		this.groups = [];
    	},
    	setDrawRange: function ( start, count ) {
    		this.drawRange.start = start;
    		this.drawRange.count = count;
    	},
    	applyMatrix4: function ( matrix ) {
    		const position = this.attributes.position;
    		if ( position !== undefined ) {
    			position.applyMatrix4( matrix );
    			position.needsUpdate = true;
    		}
    		const normal = this.attributes.normal;
    		if ( normal !== undefined ) {
    			const normalMatrix = new Matrix3().getNormalMatrix( matrix );
    			normal.applyNormalMatrix( normalMatrix );
    			normal.needsUpdate = true;
    		}
    		const tangent = this.attributes.tangent;
    		if ( tangent !== undefined ) {
    			tangent.transformDirection( matrix );
    			tangent.needsUpdate = true;
    		}
    		if ( this.boundingBox !== null ) {
    			this.computeBoundingBox();
    		}
    		if ( this.boundingSphere !== null ) {
    			this.computeBoundingSphere();
    		}
    		return this;
    	},
    	rotateX: function ( angle ) {
    		_m1$2.makeRotationX( angle );
    		this.applyMatrix4( _m1$2 );
    		return this;
    	},
    	rotateY: function ( angle ) {
    		_m1$2.makeRotationY( angle );
    		this.applyMatrix4( _m1$2 );
    		return this;
    	},
    	rotateZ: function ( angle ) {
    		_m1$2.makeRotationZ( angle );
    		this.applyMatrix4( _m1$2 );
    		return this;
    	},
    	translate: function ( x, y, z ) {
    		_m1$2.makeTranslation( x, y, z );
    		this.applyMatrix4( _m1$2 );
    		return this;
    	},
    	scale: function ( x, y, z ) {
    		_m1$2.makeScale( x, y, z );
    		this.applyMatrix4( _m1$2 );
    		return this;
    	},
    	lookAt: function ( vector ) {
    		_obj.lookAt( vector );
    		_obj.updateMatrix();
    		this.applyMatrix4( _obj.matrix );
    		return this;
    	},
    	center: function () {
    		this.computeBoundingBox();
    		this.boundingBox.getCenter( _offset ).negate();
    		this.translate( _offset.x, _offset.y, _offset.z );
    		return this;
    	},
    	setFromObject: function ( object ) {
    		const geometry = object.geometry;
    		if ( object.isPoints || object.isLine ) {
    			const positions = new Float32BufferAttribute( geometry.vertices.length * 3, 3 );
    			const colors = new Float32BufferAttribute( geometry.colors.length * 3, 3 );
    			this.setAttribute( 'position', positions.copyVector3sArray( geometry.vertices ) );
    			this.setAttribute( 'color', colors.copyColorsArray( geometry.colors ) );
    			if ( geometry.lineDistances && geometry.lineDistances.length === geometry.vertices.length ) {
    				const lineDistances = new Float32BufferAttribute( geometry.lineDistances.length, 1 );
    				this.setAttribute( 'lineDistance', lineDistances.copyArray( geometry.lineDistances ) );
    			}
    			if ( geometry.boundingSphere !== null ) {
    				this.boundingSphere = geometry.boundingSphere.clone();
    			}
    			if ( geometry.boundingBox !== null ) {
    				this.boundingBox = geometry.boundingBox.clone();
    			}
    		} else if ( object.isMesh ) {
    			if ( geometry && geometry.isGeometry ) {
    				this.fromGeometry( geometry );
    			}
    		}
    		return this;
    	},
    	setFromPoints: function ( points ) {
    		const position = [];
    		for ( let i = 0, l = points.length; i < l; i ++ ) {
    			const point = points[ i ];
    			position.push( point.x, point.y, point.z || 0 );
    		}
    		this.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );
    		return this;
    	},
    	updateFromObject: function ( object ) {
    		let geometry = object.geometry;
    		if ( object.isMesh ) {
    			let direct = geometry.__directGeometry;
    			if ( geometry.elementsNeedUpdate === true ) {
    				direct = undefined;
    				geometry.elementsNeedUpdate = false;
    			}
    			if ( direct === undefined ) {
    				return this.fromGeometry( geometry );
    			}
    			direct.verticesNeedUpdate = geometry.verticesNeedUpdate;
    			direct.normalsNeedUpdate = geometry.normalsNeedUpdate;
    			direct.colorsNeedUpdate = geometry.colorsNeedUpdate;
    			direct.uvsNeedUpdate = geometry.uvsNeedUpdate;
    			direct.groupsNeedUpdate = geometry.groupsNeedUpdate;
    			geometry.verticesNeedUpdate = false;
    			geometry.normalsNeedUpdate = false;
    			geometry.colorsNeedUpdate = false;
    			geometry.uvsNeedUpdate = false;
    			geometry.groupsNeedUpdate = false;
    			geometry = direct;
    		}
    		if ( geometry.verticesNeedUpdate === true ) {
    			const attribute = this.attributes.position;
    			if ( attribute !== undefined ) {
    				attribute.copyVector3sArray( geometry.vertices );
    				attribute.needsUpdate = true;
    			}
    			geometry.verticesNeedUpdate = false;
    		}
    		if ( geometry.normalsNeedUpdate === true ) {
    			const attribute = this.attributes.normal;
    			if ( attribute !== undefined ) {
    				attribute.copyVector3sArray( geometry.normals );
    				attribute.needsUpdate = true;
    			}
    			geometry.normalsNeedUpdate = false;
    		}
    		if ( geometry.colorsNeedUpdate === true ) {
    			const attribute = this.attributes.color;
    			if ( attribute !== undefined ) {
    				attribute.copyColorsArray( geometry.colors );
    				attribute.needsUpdate = true;
    			}
    			geometry.colorsNeedUpdate = false;
    		}
    		if ( geometry.uvsNeedUpdate ) {
    			const attribute = this.attributes.uv;
    			if ( attribute !== undefined ) {
    				attribute.copyVector2sArray( geometry.uvs );
    				attribute.needsUpdate = true;
    			}
    			geometry.uvsNeedUpdate = false;
    		}
    		if ( geometry.lineDistancesNeedUpdate ) {
    			const attribute = this.attributes.lineDistance;
    			if ( attribute !== undefined ) {
    				attribute.copyArray( geometry.lineDistances );
    				attribute.needsUpdate = true;
    			}
    			geometry.lineDistancesNeedUpdate = false;
    		}
    		if ( geometry.groupsNeedUpdate ) {
    			geometry.computeGroups( object.geometry );
    			this.groups = geometry.groups;
    			geometry.groupsNeedUpdate = false;
    		}
    		return this;
    	},
    	fromGeometry: function ( geometry ) {
    		geometry.__directGeometry = new DirectGeometry().fromGeometry( geometry );
    		return this.fromDirectGeometry( geometry.__directGeometry );
    	},
    	fromDirectGeometry: function ( geometry ) {
    		const positions = new Float32Array( geometry.vertices.length * 3 );
    		this.setAttribute( 'position', new BufferAttribute( positions, 3 ).copyVector3sArray( geometry.vertices ) );
    		if ( geometry.normals.length > 0 ) {
    			const normals = new Float32Array( geometry.normals.length * 3 );
    			this.setAttribute( 'normal', new BufferAttribute( normals, 3 ).copyVector3sArray( geometry.normals ) );
    		}
    		if ( geometry.colors.length > 0 ) {
    			const colors = new Float32Array( geometry.colors.length * 3 );
    			this.setAttribute( 'color', new BufferAttribute( colors, 3 ).copyColorsArray( geometry.colors ) );
    		}
    		if ( geometry.uvs.length > 0 ) {
    			const uvs = new Float32Array( geometry.uvs.length * 2 );
    			this.setAttribute( 'uv', new BufferAttribute( uvs, 2 ).copyVector2sArray( geometry.uvs ) );
    		}
    		if ( geometry.uvs2.length > 0 ) {
    			const uvs2 = new Float32Array( geometry.uvs2.length * 2 );
    			this.setAttribute( 'uv2', new BufferAttribute( uvs2, 2 ).copyVector2sArray( geometry.uvs2 ) );
    		}
    		this.groups = geometry.groups;
    		for ( const name in geometry.morphTargets ) {
    			const array = [];
    			const morphTargets = geometry.morphTargets[ name ];
    			for ( let i = 0, l = morphTargets.length; i < l; i ++ ) {
    				const morphTarget = morphTargets[ i ];
    				const attribute = new Float32BufferAttribute( morphTarget.data.length * 3, 3 );
    				attribute.name = morphTarget.name;
    				array.push( attribute.copyVector3sArray( morphTarget.data ) );
    			}
    			this.morphAttributes[ name ] = array;
    		}
    		if ( geometry.skinIndices.length > 0 ) {
    			const skinIndices = new Float32BufferAttribute( geometry.skinIndices.length * 4, 4 );
    			this.setAttribute( 'skinIndex', skinIndices.copyVector4sArray( geometry.skinIndices ) );
    		}
    		if ( geometry.skinWeights.length > 0 ) {
    			const skinWeights = new Float32BufferAttribute( geometry.skinWeights.length * 4, 4 );
    			this.setAttribute( 'skinWeight', skinWeights.copyVector4sArray( geometry.skinWeights ) );
    		}
    		if ( geometry.boundingSphere !== null ) {
    			this.boundingSphere = geometry.boundingSphere.clone();
    		}
    		if ( geometry.boundingBox !== null ) {
    			this.boundingBox = geometry.boundingBox.clone();
    		}
    		return this;
    	},
    	computeBoundingBox: function () {
    		if ( this.boundingBox === null ) {
    			this.boundingBox = new Box3();
    		}
    		const position = this.attributes.position;
    		const morphAttributesPosition = this.morphAttributes.position;
    		if ( position && position.isGLBufferAttribute ) {
    			console.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this );
    			this.boundingBox.set(
    				new Vector3( - Infinity, - Infinity, - Infinity ),
    				new Vector3( + Infinity, + Infinity, + Infinity )
    			);
    			return;
    		}
    		if ( position !== undefined ) {
    			this.boundingBox.setFromBufferAttribute( position );
    			if ( morphAttributesPosition ) {
    				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
    					const morphAttribute = morphAttributesPosition[ i ];
    					_box$2.setFromBufferAttribute( morphAttribute );
    					if ( this.morphTargetsRelative ) {
    						_vector$4.addVectors( this.boundingBox.min, _box$2.min );
    						this.boundingBox.expandByPoint( _vector$4 );
    						_vector$4.addVectors( this.boundingBox.max, _box$2.max );
    						this.boundingBox.expandByPoint( _vector$4 );
    					} else {
    						this.boundingBox.expandByPoint( _box$2.min );
    						this.boundingBox.expandByPoint( _box$2.max );
    					}
    				}
    			}
    		} else {
    			this.boundingBox.makeEmpty();
    		}
    		if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {
    			console.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );
    		}
    	},
    	computeBoundingSphere: function () {
    		if ( this.boundingSphere === null ) {
    			this.boundingSphere = new Sphere();
    		}
    		const position = this.attributes.position;
    		const morphAttributesPosition = this.morphAttributes.position;
    		if ( position && position.isGLBufferAttribute ) {
    			console.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this );
    			this.boundingSphere.set( new Vector3(), Infinity );
    			return;
    		}
    		if ( position ) {
    			const center = this.boundingSphere.center;
    			_box$2.setFromBufferAttribute( position );
    			if ( morphAttributesPosition ) {
    				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
    					const morphAttribute = morphAttributesPosition[ i ];
    					_boxMorphTargets.setFromBufferAttribute( morphAttribute );
    					if ( this.morphTargetsRelative ) {
    						_vector$4.addVectors( _box$2.min, _boxMorphTargets.min );
    						_box$2.expandByPoint( _vector$4 );
    						_vector$4.addVectors( _box$2.max, _boxMorphTargets.max );
    						_box$2.expandByPoint( _vector$4 );
    					} else {
    						_box$2.expandByPoint( _boxMorphTargets.min );
    						_box$2.expandByPoint( _boxMorphTargets.max );
    					}
    				}
    			}
    			_box$2.getCenter( center );
    			let maxRadiusSq = 0;
    			for ( let i = 0, il = position.count; i < il; i ++ ) {
    				_vector$4.fromBufferAttribute( position, i );
    				maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );
    			}
    			if ( morphAttributesPosition ) {
    				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
    					const morphAttribute = morphAttributesPosition[ i ];
    					const morphTargetsRelative = this.morphTargetsRelative;
    					for ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {
    						_vector$4.fromBufferAttribute( morphAttribute, j );
    						if ( morphTargetsRelative ) {
    							_offset.fromBufferAttribute( position, j );
    							_vector$4.add( _offset );
    						}
    						maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$4 ) );
    					}
    				}
    			}
    			this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
    			if ( isNaN( this.boundingSphere.radius ) ) {
    				console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );
    			}
    		}
    	},
    	computeFaceNormals: function () {
    	},
    	computeVertexNormals: function () {
    		const index = this.index;
    		const positionAttribute = this.getAttribute( 'position' );
    		if ( positionAttribute !== undefined ) {
    			let normalAttribute = this.getAttribute( 'normal' );
    			if ( normalAttribute === undefined ) {
    				normalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );
    				this.setAttribute( 'normal', normalAttribute );
    			} else {
    				for ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {
    					normalAttribute.setXYZ( i, 0, 0, 0 );
    				}
    			}
    			const pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
    			const nA = new Vector3(), nB = new Vector3(), nC = new Vector3();
    			const cb = new Vector3(), ab = new Vector3();
    			if ( index ) {
    				for ( let i = 0, il = index.count; i < il; i += 3 ) {
    					const vA = index.getX( i + 0 );
    					const vB = index.getX( i + 1 );
    					const vC = index.getX( i + 2 );
    					pA.fromBufferAttribute( positionAttribute, vA );
    					pB.fromBufferAttribute( positionAttribute, vB );
    					pC.fromBufferAttribute( positionAttribute, vC );
    					cb.subVectors( pC, pB );
    					ab.subVectors( pA, pB );
    					cb.cross( ab );
    					nA.fromBufferAttribute( normalAttribute, vA );
    					nB.fromBufferAttribute( normalAttribute, vB );
    					nC.fromBufferAttribute( normalAttribute, vC );
    					nA.add( cb );
    					nB.add( cb );
    					nC.add( cb );
    					normalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );
    					normalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );
    					normalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );
    				}
    			} else {
    				for ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {
    					pA.fromBufferAttribute( positionAttribute, i + 0 );
    					pB.fromBufferAttribute( positionAttribute, i + 1 );
    					pC.fromBufferAttribute( positionAttribute, i + 2 );
    					cb.subVectors( pC, pB );
    					ab.subVectors( pA, pB );
    					cb.cross( ab );
    					normalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );
    					normalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );
    					normalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );
    				}
    			}
    			this.normalizeNormals();
    			normalAttribute.needsUpdate = true;
    		}
    	},
    	merge: function ( geometry, offset ) {
    		if ( ! ( geometry && geometry.isBufferGeometry ) ) {
    			console.error( 'THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry );
    			return;
    		}
    		if ( offset === undefined ) {
    			offset = 0;
    			console.warn(
    				'THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. '
    				+ 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.'
    			);
    		}
    		const attributes = this.attributes;
    		for ( const key in attributes ) {
    			if ( geometry.attributes[ key ] === undefined ) continue;
    			const attribute1 = attributes[ key ];
    			const attributeArray1 = attribute1.array;
    			const attribute2 = geometry.attributes[ key ];
    			const attributeArray2 = attribute2.array;
    			const attributeOffset = attribute2.itemSize * offset;
    			const length = Math.min( attributeArray2.length, attributeArray1.length - attributeOffset );
    			for ( let i = 0, j = attributeOffset; i < length; i ++, j ++ ) {
    				attributeArray1[ j ] = attributeArray2[ i ];
    			}
    		}
    		return this;
    	},
    	normalizeNormals: function () {
    		const normals = this.attributes.normal;
    		for ( let i = 0, il = normals.count; i < il; i ++ ) {
    			_vector$4.fromBufferAttribute( normals, i );
    			_vector$4.normalize();
    			normals.setXYZ( i, _vector$4.x, _vector$4.y, _vector$4.z );
    		}
    	},
    	toNonIndexed: function () {
    		function convertBufferAttribute( attribute, indices ) {
    			const array = attribute.array;
    			const itemSize = attribute.itemSize;
    			const normalized = attribute.normalized;
    			const array2 = new array.constructor( indices.length * itemSize );
    			let index = 0, index2 = 0;
    			for ( let i = 0, l = indices.length; i < l; i ++ ) {
    				index = indices[ i ] * itemSize;
    				for ( let j = 0; j < itemSize; j ++ ) {
    					array2[ index2 ++ ] = array[ index ++ ];
    				}
    			}
    			return new BufferAttribute( array2, itemSize, normalized );
    		}
    		if ( this.index === null ) {
    			console.warn( 'THREE.BufferGeometry.toNonIndexed(): Geometry is already non-indexed.' );
    			return this;
    		}
    		const geometry2 = new BufferGeometry();
    		const indices = this.index.array;
    		const attributes = this.attributes;
    		for ( const name in attributes ) {
    			const attribute = attributes[ name ];
    			const newAttribute = convertBufferAttribute( attribute, indices );
    			geometry2.setAttribute( name, newAttribute );
    		}
    		const morphAttributes = this.morphAttributes;
    		for ( const name in morphAttributes ) {
    			const morphArray = [];
    			const morphAttribute = morphAttributes[ name ];
    			for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {
    				const attribute = morphAttribute[ i ];
    				const newAttribute = convertBufferAttribute( attribute, indices );
    				morphArray.push( newAttribute );
    			}
    			geometry2.morphAttributes[ name ] = morphArray;
    		}
    		geometry2.morphTargetsRelative = this.morphTargetsRelative;
    		const groups = this.groups;
    		for ( let i = 0, l = groups.length; i < l; i ++ ) {
    			const group = groups[ i ];
    			geometry2.addGroup( group.start, group.count, group.materialIndex );
    		}
    		return geometry2;
    	},
    	toJSON: function () {
    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'BufferGeometry',
    				generator: 'BufferGeometry.toJSON'
    			}
    		};
    		data.uuid = this.uuid;
    		data.type = this.type;
    		if ( this.name !== '' ) data.name = this.name;
    		if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;
    		if ( this.parameters !== undefined ) {
    			const parameters = this.parameters;
    			for ( const key in parameters ) {
    				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];
    			}
    			return data;
    		}
    		data.data = { attributes: {} };
    		const index = this.index;
    		if ( index !== null ) {
    			data.data.index = {
    				type: index.array.constructor.name,
    				array: Array.prototype.slice.call( index.array )
    			};
    		}
    		const attributes = this.attributes;
    		for ( const key in attributes ) {
    			const attribute = attributes[ key ];
    			const attributeData = attribute.toJSON( data.data );
    			if ( attribute.name !== '' ) attributeData.name = attribute.name;
    			data.data.attributes[ key ] = attributeData;
    		}
    		const morphAttributes = {};
    		let hasMorphAttributes = false;
    		for ( const key in this.morphAttributes ) {
    			const attributeArray = this.morphAttributes[ key ];
    			const array = [];
    			for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {
    				const attribute = attributeArray[ i ];
    				const attributeData = attribute.toJSON( data.data );
    				if ( attribute.name !== '' ) attributeData.name = attribute.name;
    				array.push( attributeData );
    			}
    			if ( array.length > 0 ) {
    				morphAttributes[ key ] = array;
    				hasMorphAttributes = true;
    			}
    		}
    		if ( hasMorphAttributes ) {
    			data.data.morphAttributes = morphAttributes;
    			data.data.morphTargetsRelative = this.morphTargetsRelative;
    		}
    		const groups = this.groups;
    		if ( groups.length > 0 ) {
    			data.data.groups = JSON.parse( JSON.stringify( groups ) );
    		}
    		const boundingSphere = this.boundingSphere;
    		if ( boundingSphere !== null ) {
    			data.data.boundingSphere = {
    				center: boundingSphere.center.toArray(),
    				radius: boundingSphere.radius
    			};
    		}
    		return data;
    	},
    	clone: function () {
    		return new BufferGeometry().copy( this );
    	},
    	copy: function ( source ) {
    		this.index = null;
    		this.attributes = {};
    		this.morphAttributes = {};
    		this.groups = [];
    		this.boundingBox = null;
    		this.boundingSphere = null;
    		const data = {};
    		this.name = source.name;
    		const index = source.index;
    		if ( index !== null ) {
    			this.setIndex( index.clone( data ) );
    		}
    		const attributes = source.attributes;
    		for ( const name in attributes ) {
    			const attribute = attributes[ name ];
    			this.setAttribute( name, attribute.clone( data ) );
    		}
    		const morphAttributes = source.morphAttributes;
    		for ( const name in morphAttributes ) {
    			const array = [];
    			const morphAttribute = morphAttributes[ name ];
    			for ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {
    				array.push( morphAttribute[ i ].clone( data ) );
    			}
    			this.morphAttributes[ name ] = array;
    		}
    		this.morphTargetsRelative = source.morphTargetsRelative;
    		const groups = source.groups;
    		for ( let i = 0, l = groups.length; i < l; i ++ ) {
    			const group = groups[ i ];
    			this.addGroup( group.start, group.count, group.materialIndex );
    		}
    		const boundingBox = source.boundingBox;
    		if ( boundingBox !== null ) {
    			this.boundingBox = boundingBox.clone();
    		}
    		const boundingSphere = source.boundingSphere;
    		if ( boundingSphere !== null ) {
    			this.boundingSphere = boundingSphere.clone();
    		}
    		this.drawRange.start = source.drawRange.start;
    		this.drawRange.count = source.drawRange.count;
    		this.userData = source.userData;
    		return this;
    	},
    	dispose: function () {
    		this.dispatchEvent( { type: 'dispose' } );
    	}
    } );
    const _inverseMatrix = new Matrix4();
    const _ray = new Ray();
    const _sphere = new Sphere();
    const _vA = new Vector3();
    const _vB = new Vector3();
    const _vC = new Vector3();
    const _tempA = new Vector3();
    const _tempB = new Vector3();
    const _tempC = new Vector3();
    const _morphA = new Vector3();
    const _morphB = new Vector3();
    const _morphC = new Vector3();
    const _uvA = new Vector2();
    const _uvB = new Vector2();
    const _uvC = new Vector2();
    const _intersectionPoint = new Vector3();
    const _intersectionPointWorld = new Vector3();
    function Mesh( geometry, material ) {
    	Object3D.call( this );
    	this.type = 'Mesh';
    	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
    	this.material = material !== undefined ? material : new MeshBasicMaterial();
    	this.updateMorphTargets();
    }
    Mesh.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Mesh,
    	isMesh: true,
    	copy: function ( source ) {
    		Object3D.prototype.copy.call( this, source );
    		if ( source.morphTargetInfluences !== undefined ) {
    			this.morphTargetInfluences = source.morphTargetInfluences.slice();
    		}
    		if ( source.morphTargetDictionary !== undefined ) {
    			this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );
    		}
    		this.material = source.material;
    		this.geometry = source.geometry;
    		return this;
    	},
    	updateMorphTargets: function () {
    		const geometry = this.geometry;
    		if ( geometry.isBufferGeometry ) {
    			const morphAttributes = geometry.morphAttributes;
    			const keys = Object.keys( morphAttributes );
    			if ( keys.length > 0 ) {
    				const morphAttribute = morphAttributes[ keys[ 0 ] ];
    				if ( morphAttribute !== undefined ) {
    					this.morphTargetInfluences = [];
    					this.morphTargetDictionary = {};
    					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
    						const name = morphAttribute[ m ].name || String( m );
    						this.morphTargetInfluences.push( 0 );
    						this.morphTargetDictionary[ name ] = m;
    					}
    				}
    			}
    		} else {
    			const morphTargets = geometry.morphTargets;
    			if ( morphTargets !== undefined && morphTargets.length > 0 ) {
    				console.error( 'THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );
    			}
    		}
    	},
    	raycast: function ( raycaster, intersects ) {
    		const geometry = this.geometry;
    		const material = this.material;
    		const matrixWorld = this.matrixWorld;
    		if ( material === undefined ) return;
    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
    		_sphere.copy( geometry.boundingSphere );
    		_sphere.applyMatrix4( matrixWorld );
    		if ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;
    		_inverseMatrix.getInverse( matrixWorld );
    		_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );
    		if ( geometry.boundingBox !== null ) {
    			if ( _ray.intersectsBox( geometry.boundingBox ) === false ) return;
    		}
    		let intersection;
    		if ( geometry.isBufferGeometry ) {
    			const index = geometry.index;
    			const position = geometry.attributes.position;
    			const morphPosition = geometry.morphAttributes.position;
    			const morphTargetsRelative = geometry.morphTargetsRelative;
    			const uv = geometry.attributes.uv;
    			const uv2 = geometry.attributes.uv2;
    			const groups = geometry.groups;
    			const drawRange = geometry.drawRange;
    			if ( index !== null ) {
    				if ( Array.isArray( material ) ) {
    					for ( let i = 0, il = groups.length; i < il; i ++ ) {
    						const group = groups[ i ];
    						const groupMaterial = material[ group.materialIndex ];
    						const start = Math.max( group.start, drawRange.start );
    						const end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );
    						for ( let j = start, jl = end; j < jl; j += 3 ) {
    							const a = index.getX( j );
    							const b = index.getX( j + 1 );
    							const c = index.getX( j + 2 );
    							intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
    							if ( intersection ) {
    								intersection.faceIndex = Math.floor( j / 3 );
    								intersection.face.materialIndex = group.materialIndex;
    								intersects.push( intersection );
    							}
    						}
    					}
    				} else {
    					const start = Math.max( 0, drawRange.start );
    					const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );
    					for ( let i = start, il = end; i < il; i += 3 ) {
    						const a = index.getX( i );
    						const b = index.getX( i + 1 );
    						const c = index.getX( i + 2 );
    						intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
    						if ( intersection ) {
    							intersection.faceIndex = Math.floor( i / 3 );
    							intersects.push( intersection );
    						}
    					}
    				}
    			} else if ( position !== undefined ) {
    				if ( Array.isArray( material ) ) {
    					for ( let i = 0, il = groups.length; i < il; i ++ ) {
    						const group = groups[ i ];
    						const groupMaterial = material[ group.materialIndex ];
    						const start = Math.max( group.start, drawRange.start );
    						const end = Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) );
    						for ( let j = start, jl = end; j < jl; j += 3 ) {
    							const a = j;
    							const b = j + 1;
    							const c = j + 2;
    							intersection = checkBufferGeometryIntersection( this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
    							if ( intersection ) {
    								intersection.faceIndex = Math.floor( j / 3 );
    								intersection.face.materialIndex = group.materialIndex;
    								intersects.push( intersection );
    							}
    						}
    					}
    				} else {
    					const start = Math.max( 0, drawRange.start );
    					const end = Math.min( position.count, ( drawRange.start + drawRange.count ) );
    					for ( let i = start, il = end; i < il; i += 3 ) {
    						const a = i;
    						const b = i + 1;
    						const c = i + 2;
    						intersection = checkBufferGeometryIntersection( this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c );
    						if ( intersection ) {
    							intersection.faceIndex = Math.floor( i / 3 );
    							intersects.push( intersection );
    						}
    					}
    				}
    			}
    		} else if ( geometry.isGeometry ) {
    			const isMultiMaterial = Array.isArray( material );
    			const vertices = geometry.vertices;
    			const faces = geometry.faces;
    			let uvs;
    			const faceVertexUvs = geometry.faceVertexUvs[ 0 ];
    			if ( faceVertexUvs.length > 0 ) uvs = faceVertexUvs;
    			for ( let f = 0, fl = faces.length; f < fl; f ++ ) {
    				const face = faces[ f ];
    				const faceMaterial = isMultiMaterial ? material[ face.materialIndex ] : material;
    				if ( faceMaterial === undefined ) continue;
    				const fvA = vertices[ face.a ];
    				const fvB = vertices[ face.b ];
    				const fvC = vertices[ face.c ];
    				intersection = checkIntersection( this, faceMaterial, raycaster, _ray, fvA, fvB, fvC, _intersectionPoint );
    				if ( intersection ) {
    					if ( uvs && uvs[ f ] ) {
    						const uvs_f = uvs[ f ];
    						_uvA.copy( uvs_f[ 0 ] );
    						_uvB.copy( uvs_f[ 1 ] );
    						_uvC.copy( uvs_f[ 2 ] );
    						intersection.uv = Triangle.getUV( _intersectionPoint, fvA, fvB, fvC, _uvA, _uvB, _uvC, new Vector2() );
    					}
    					intersection.face = face;
    					intersection.faceIndex = f;
    					intersects.push( intersection );
    				}
    			}
    		}
    	}
    } );
    function checkIntersection( object, material, raycaster, ray, pA, pB, pC, point ) {
    	let intersect;
    	if ( material.side === BackSide ) {
    		intersect = ray.intersectTriangle( pC, pB, pA, true, point );
    	} else {
    		intersect = ray.intersectTriangle( pA, pB, pC, material.side !== DoubleSide, point );
    	}
    	if ( intersect === null ) return null;
    	_intersectionPointWorld.copy( point );
    	_intersectionPointWorld.applyMatrix4( object.matrixWorld );
    	const distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );
    	if ( distance < raycaster.near || distance > raycaster.far ) return null;
    	return {
    		distance: distance,
    		point: _intersectionPointWorld.clone(),
    		object: object
    	};
    }
    function checkBufferGeometryIntersection( object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c ) {
    	_vA.fromBufferAttribute( position, a );
    	_vB.fromBufferAttribute( position, b );
    	_vC.fromBufferAttribute( position, c );
    	const morphInfluences = object.morphTargetInfluences;
    	if ( material.morphTargets && morphPosition && morphInfluences ) {
    		_morphA.set( 0, 0, 0 );
    		_morphB.set( 0, 0, 0 );
    		_morphC.set( 0, 0, 0 );
    		for ( let i = 0, il = morphPosition.length; i < il; i ++ ) {
    			const influence = morphInfluences[ i ];
    			const morphAttribute = morphPosition[ i ];
    			if ( influence === 0 ) continue;
    			_tempA.fromBufferAttribute( morphAttribute, a );
    			_tempB.fromBufferAttribute( morphAttribute, b );
    			_tempC.fromBufferAttribute( morphAttribute, c );
    			if ( morphTargetsRelative ) {
    				_morphA.addScaledVector( _tempA, influence );
    				_morphB.addScaledVector( _tempB, influence );
    				_morphC.addScaledVector( _tempC, influence );
    			} else {
    				_morphA.addScaledVector( _tempA.sub( _vA ), influence );
    				_morphB.addScaledVector( _tempB.sub( _vB ), influence );
    				_morphC.addScaledVector( _tempC.sub( _vC ), influence );
    			}
    		}
    		_vA.add( _morphA );
    		_vB.add( _morphB );
    		_vC.add( _morphC );
    	}
    	if ( object.isSkinnedMesh ) {
    		object.boneTransform( a, _vA );
    		object.boneTransform( b, _vB );
    		object.boneTransform( c, _vC );
    	}
    	const intersection = checkIntersection( object, material, raycaster, ray, _vA, _vB, _vC, _intersectionPoint );
    	if ( intersection ) {
    		if ( uv ) {
    			_uvA.fromBufferAttribute( uv, a );
    			_uvB.fromBufferAttribute( uv, b );
    			_uvC.fromBufferAttribute( uv, c );
    			intersection.uv = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );
    		}
    		if ( uv2 ) {
    			_uvA.fromBufferAttribute( uv2, a );
    			_uvB.fromBufferAttribute( uv2, b );
    			_uvC.fromBufferAttribute( uv2, c );
    			intersection.uv2 = Triangle.getUV( _intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() );
    		}
    		const face = new Face3( a, b, c );
    		Triangle.getNormal( _vA, _vB, _vC, face.normal );
    		intersection.face = face;
    	}
    	return intersection;
    }
    let _geometryId = 0;
    const _m1$3 = new Matrix4();
    const _obj$1 = new Object3D();
    const _offset$1 = new Vector3();
    function Geometry() {
    	Object.defineProperty( this, 'id', { value: _geometryId += 2 } );
    	this.uuid = MathUtils.generateUUID();
    	this.name = '';
    	this.type = 'Geometry';
    	this.vertices = [];
    	this.colors = [];
    	this.faces = [];
    	this.faceVertexUvs = [[]];
    	this.morphTargets = [];
    	this.morphNormals = [];
    	this.skinWeights = [];
    	this.skinIndices = [];
    	this.lineDistances = [];
    	this.boundingBox = null;
    	this.boundingSphere = null;
    	this.elementsNeedUpdate = false;
    	this.verticesNeedUpdate = false;
    	this.uvsNeedUpdate = false;
    	this.normalsNeedUpdate = false;
    	this.colorsNeedUpdate = false;
    	this.lineDistancesNeedUpdate = false;
    	this.groupsNeedUpdate = false;
    }
    Geometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
    	constructor: Geometry,
    	isGeometry: true,
    	applyMatrix4: function ( matrix ) {
    		const normalMatrix = new Matrix3().getNormalMatrix( matrix );
    		for ( let i = 0, il = this.vertices.length; i < il; i ++ ) {
    			const vertex = this.vertices[ i ];
    			vertex.applyMatrix4( matrix );
    		}
    		for ( let i = 0, il = this.faces.length; i < il; i ++ ) {
    			const face = this.faces[ i ];
    			face.normal.applyMatrix3( normalMatrix ).normalize();
    			for ( let j = 0, jl = face.vertexNormals.length; j < jl; j ++ ) {
    				face.vertexNormals[ j ].applyMatrix3( normalMatrix ).normalize();
    			}
    		}
    		if ( this.boundingBox !== null ) {
    			this.computeBoundingBox();
    		}
    		if ( this.boundingSphere !== null ) {
    			this.computeBoundingSphere();
    		}
    		this.verticesNeedUpdate = true;
    		this.normalsNeedUpdate = true;
    		return this;
    	},
    	rotateX: function ( angle ) {
    		_m1$3.makeRotationX( angle );
    		this.applyMatrix4( _m1$3 );
    		return this;
    	},
    	rotateY: function ( angle ) {
    		_m1$3.makeRotationY( angle );
    		this.applyMatrix4( _m1$3 );
    		return this;
    	},
    	rotateZ: function ( angle ) {
    		_m1$3.makeRotationZ( angle );
    		this.applyMatrix4( _m1$3 );
    		return this;
    	},
    	translate: function ( x, y, z ) {
    		_m1$3.makeTranslation( x, y, z );
    		this.applyMatrix4( _m1$3 );
    		return this;
    	},
    	scale: function ( x, y, z ) {
    		_m1$3.makeScale( x, y, z );
    		this.applyMatrix4( _m1$3 );
    		return this;
    	},
    	lookAt: function ( vector ) {
    		_obj$1.lookAt( vector );
    		_obj$1.updateMatrix();
    		this.applyMatrix4( _obj$1.matrix );
    		return this;
    	},
    	fromBufferGeometry: function ( geometry ) {
    		const scope = this;
    		const index = geometry.index !== null ? geometry.index : undefined;
    		const attributes = geometry.attributes;
    		if ( attributes.position === undefined ) {
    			console.error( 'THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion.' );
    			return this;
    		}
    		const position = attributes.position;
    		const normal = attributes.normal;
    		const color = attributes.color;
    		const uv = attributes.uv;
    		const uv2 = attributes.uv2;
    		if ( uv2 !== undefined ) this.faceVertexUvs[ 1 ] = [];
    		for ( let i = 0; i < position.count; i ++ ) {
    			scope.vertices.push( new Vector3().fromBufferAttribute( position, i ) );
    			if ( color !== undefined ) {
    				scope.colors.push( new Color().fromBufferAttribute( color, i ) );
    			}
    		}
    		function addFace( a, b, c, materialIndex ) {
    			const vertexColors = ( color === undefined ) ? [] : [
    				scope.colors[ a ].clone(),
    				scope.colors[ b ].clone(),
    				scope.colors[ c ].clone()
    			];
    			const vertexNormals = ( normal === undefined ) ? [] : [
    				new Vector3().fromBufferAttribute( normal, a ),
    				new Vector3().fromBufferAttribute( normal, b ),
    				new Vector3().fromBufferAttribute( normal, c )
    			];
    			const face = new Face3( a, b, c, vertexNormals, vertexColors, materialIndex );
    			scope.faces.push( face );
    			if ( uv !== undefined ) {
    				scope.faceVertexUvs[ 0 ].push( [
    					new Vector2().fromBufferAttribute( uv, a ),
    					new Vector2().fromBufferAttribute( uv, b ),
    					new Vector2().fromBufferAttribute( uv, c )
    				] );
    			}
    			if ( uv2 !== undefined ) {
    				scope.faceVertexUvs[ 1 ].push( [
    					new Vector2().fromBufferAttribute( uv2, a ),
    					new Vector2().fromBufferAttribute( uv2, b ),
    					new Vector2().fromBufferAttribute( uv2, c )
    				] );
    			}
    		}
    		const groups = geometry.groups;
    		if ( groups.length > 0 ) {
    			for ( let i = 0; i < groups.length; i ++ ) {
    				const group = groups[ i ];
    				const start = group.start;
    				const count = group.count;
    				for ( let j = start, jl = start + count; j < jl; j += 3 ) {
    					if ( index !== undefined ) {
    						addFace( index.getX( j ), index.getX( j + 1 ), index.getX( j + 2 ), group.materialIndex );
    					} else {
    						addFace( j, j + 1, j + 2, group.materialIndex );
    					}
    				}
    			}
    		} else {
    			if ( index !== undefined ) {
    				for ( let i = 0; i < index.count; i += 3 ) {
    					addFace( index.getX( i ), index.getX( i + 1 ), index.getX( i + 2 ) );
    				}
    			} else {
    				for ( let i = 0; i < position.count; i += 3 ) {
    					addFace( i, i + 1, i + 2 );
    				}
    			}
    		}
    		this.computeFaceNormals();
    		if ( geometry.boundingBox !== null ) {
    			this.boundingBox = geometry.boundingBox.clone();
    		}
    		if ( geometry.boundingSphere !== null ) {
    			this.boundingSphere = geometry.boundingSphere.clone();
    		}
    		return this;
    	},
    	center: function () {
    		this.computeBoundingBox();
    		this.boundingBox.getCenter( _offset$1 ).negate();
    		this.translate( _offset$1.x, _offset$1.y, _offset$1.z );
    		return this;
    	},
    	normalize: function () {
    		this.computeBoundingSphere();
    		const center = this.boundingSphere.center;
    		const radius = this.boundingSphere.radius;
    		const s = radius === 0 ? 1 : 1.0 / radius;
    		const matrix = new Matrix4();
    		matrix.set(
    			s, 0, 0, - s * center.x,
    			0, s, 0, - s * center.y,
    			0, 0, s, - s * center.z,
    			0, 0, 0, 1
    		);
    		this.applyMatrix4( matrix );
    		return this;
    	},
    	computeFaceNormals: function () {
    		const cb = new Vector3(), ab = new Vector3();
    		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    			const face = this.faces[ f ];
    			const vA = this.vertices[ face.a ];
    			const vB = this.vertices[ face.b ];
    			const vC = this.vertices[ face.c ];
    			cb.subVectors( vC, vB );
    			ab.subVectors( vA, vB );
    			cb.cross( ab );
    			cb.normalize();
    			face.normal.copy( cb );
    		}
    	},
    	computeVertexNormals: function ( areaWeighted ) {
    		if ( areaWeighted === undefined ) areaWeighted = true;
    		const vertices = new Array( this.vertices.length );
    		for ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {
    			vertices[ v ] = new Vector3();
    		}
    		if ( areaWeighted ) {
    			const cb = new Vector3(), ab = new Vector3();
    			for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    				const face = this.faces[ f ];
    				const vA = this.vertices[ face.a ];
    				const vB = this.vertices[ face.b ];
    				const vC = this.vertices[ face.c ];
    				cb.subVectors( vC, vB );
    				ab.subVectors( vA, vB );
    				cb.cross( ab );
    				vertices[ face.a ].add( cb );
    				vertices[ face.b ].add( cb );
    				vertices[ face.c ].add( cb );
    			}
    		} else {
    			this.computeFaceNormals();
    			for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    				const face = this.faces[ f ];
    				vertices[ face.a ].add( face.normal );
    				vertices[ face.b ].add( face.normal );
    				vertices[ face.c ].add( face.normal );
    			}
    		}
    		for ( let v = 0, vl = this.vertices.length; v < vl; v ++ ) {
    			vertices[ v ].normalize();
    		}
    		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    			const face = this.faces[ f ];
    			const vertexNormals = face.vertexNormals;
    			if ( vertexNormals.length === 3 ) {
    				vertexNormals[ 0 ].copy( vertices[ face.a ] );
    				vertexNormals[ 1 ].copy( vertices[ face.b ] );
    				vertexNormals[ 2 ].copy( vertices[ face.c ] );
    			} else {
    				vertexNormals[ 0 ] = vertices[ face.a ].clone();
    				vertexNormals[ 1 ] = vertices[ face.b ].clone();
    				vertexNormals[ 2 ] = vertices[ face.c ].clone();
    			}
    		}
    		if ( this.faces.length > 0 ) {
    			this.normalsNeedUpdate = true;
    		}
    	},
    	computeFlatVertexNormals: function () {
    		this.computeFaceNormals();
    		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    			const face = this.faces[ f ];
    			const vertexNormals = face.vertexNormals;
    			if ( vertexNormals.length === 3 ) {
    				vertexNormals[ 0 ].copy( face.normal );
    				vertexNormals[ 1 ].copy( face.normal );
    				vertexNormals[ 2 ].copy( face.normal );
    			} else {
    				vertexNormals[ 0 ] = face.normal.clone();
    				vertexNormals[ 1 ] = face.normal.clone();
    				vertexNormals[ 2 ] = face.normal.clone();
    			}
    		}
    		if ( this.faces.length > 0 ) {
    			this.normalsNeedUpdate = true;
    		}
    	},
    	computeMorphNormals: function () {
    		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    			const face = this.faces[ f ];
    			if ( ! face.__originalFaceNormal ) {
    				face.__originalFaceNormal = face.normal.clone();
    			} else {
    				face.__originalFaceNormal.copy( face.normal );
    			}
    			if ( ! face.__originalVertexNormals ) face.__originalVertexNormals = [];
    			for ( let i = 0, il = face.vertexNormals.length; i < il; i ++ ) {
    				if ( ! face.__originalVertexNormals[ i ] ) {
    					face.__originalVertexNormals[ i ] = face.vertexNormals[ i ].clone();
    				} else {
    					face.__originalVertexNormals[ i ].copy( face.vertexNormals[ i ] );
    				}
    			}
    		}
    		const tmpGeo = new Geometry();
    		tmpGeo.faces = this.faces;
    		for ( let i = 0, il = this.morphTargets.length; i < il; i ++ ) {
    			if ( ! this.morphNormals[ i ] ) {
    				this.morphNormals[ i ] = {};
    				this.morphNormals[ i ].faceNormals = [];
    				this.morphNormals[ i ].vertexNormals = [];
    				const dstNormalsFace = this.morphNormals[ i ].faceNormals;
    				const dstNormalsVertex = this.morphNormals[ i ].vertexNormals;
    				for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    					const faceNormal = new Vector3();
    					const vertexNormals = { a: new Vector3(), b: new Vector3(), c: new Vector3() };
    					dstNormalsFace.push( faceNormal );
    					dstNormalsVertex.push( vertexNormals );
    				}
    			}
    			const morphNormals = this.morphNormals[ i ];
    			tmpGeo.vertices = this.morphTargets[ i ].vertices;
    			tmpGeo.computeFaceNormals();
    			tmpGeo.computeVertexNormals();
    			for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    				const face = this.faces[ f ];
    				const faceNormal = morphNormals.faceNormals[ f ];
    				const vertexNormals = morphNormals.vertexNormals[ f ];
    				faceNormal.copy( face.normal );
    				vertexNormals.a.copy( face.vertexNormals[ 0 ] );
    				vertexNormals.b.copy( face.vertexNormals[ 1 ] );
    				vertexNormals.c.copy( face.vertexNormals[ 2 ] );
    			}
    		}
    		for ( let f = 0, fl = this.faces.length; f < fl; f ++ ) {
    			const face = this.faces[ f ];
    			face.normal = face.__originalFaceNormal;
    			face.vertexNormals = face.__originalVertexNormals;
    		}
    	},
    	computeBoundingBox: function () {
    		if ( this.boundingBox === null ) {
    			this.boundingBox = new Box3();
    		}
    		this.boundingBox.setFromPoints( this.vertices );
    	},
    	computeBoundingSphere: function () {
    		if ( this.boundingSphere === null ) {
    			this.boundingSphere = new Sphere();
    		}
    		this.boundingSphere.setFromPoints( this.vertices );
    	},
    	merge: function ( geometry, matrix, materialIndexOffset ) {
    		if ( ! ( geometry && geometry.isGeometry ) ) {
    			console.error( 'THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.', geometry );
    			return;
    		}
    		let normalMatrix;
    		const vertexOffset = this.vertices.length,
    			vertices1 = this.vertices,
    			vertices2 = geometry.vertices,
    			faces1 = this.faces,
    			faces2 = geometry.faces,
    			colors1 = this.colors,
    			colors2 = geometry.colors;
    		if ( materialIndexOffset === undefined ) materialIndexOffset = 0;
    		if ( matrix !== undefined ) {
    			normalMatrix = new Matrix3().getNormalMatrix( matrix );
    		}
    		for ( let i = 0, il = vertices2.length; i < il; i ++ ) {
    			const vertex = vertices2[ i ];
    			const vertexCopy = vertex.clone();
    			if ( matrix !== undefined ) vertexCopy.applyMatrix4( matrix );
    			vertices1.push( vertexCopy );
    		}
    		for ( let i = 0, il = colors2.length; i < il; i ++ ) {
    			colors1.push( colors2[ i ].clone() );
    		}
    		for ( let i = 0, il = faces2.length; i < il; i ++ ) {
    			const face = faces2[ i ];
    			let normal, color;
    			const faceVertexNormals = face.vertexNormals,
    				faceVertexColors = face.vertexColors;
    			const faceCopy = new Face3( face.a + vertexOffset, face.b + vertexOffset, face.c + vertexOffset );
    			faceCopy.normal.copy( face.normal );
    			if ( normalMatrix !== undefined ) {
    				faceCopy.normal.applyMatrix3( normalMatrix ).normalize();
    			}
    			for ( let j = 0, jl = faceVertexNormals.length; j < jl; j ++ ) {
    				normal = faceVertexNormals[ j ].clone();
    				if ( normalMatrix !== undefined ) {
    					normal.applyMatrix3( normalMatrix ).normalize();
    				}
    				faceCopy.vertexNormals.push( normal );
    			}
    			faceCopy.color.copy( face.color );
    			for ( let j = 0, jl = faceVertexColors.length; j < jl; j ++ ) {
    				color = faceVertexColors[ j ];
    				faceCopy.vertexColors.push( color.clone() );
    			}
    			faceCopy.materialIndex = face.materialIndex + materialIndexOffset;
    			faces1.push( faceCopy );
    		}
    		for ( let i = 0, il = geometry.faceVertexUvs.length; i < il; i ++ ) {
    			const faceVertexUvs2 = geometry.faceVertexUvs[ i ];
    			if ( this.faceVertexUvs[ i ] === undefined ) this.faceVertexUvs[ i ] = [];
    			for ( let j = 0, jl = faceVertexUvs2.length; j < jl; j ++ ) {
    				const uvs2 = faceVertexUvs2[ j ], uvsCopy = [];
    				for ( let k = 0, kl = uvs2.length; k < kl; k ++ ) {
    					uvsCopy.push( uvs2[ k ].clone() );
    				}
    				this.faceVertexUvs[ i ].push( uvsCopy );
    			}
    		}
    	},
    	mergeMesh: function ( mesh ) {
    		if ( ! ( mesh && mesh.isMesh ) ) {
    			console.error( 'THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.', mesh );
    			return;
    		}
    		if ( mesh.matrixAutoUpdate ) mesh.updateMatrix();
    		this.merge( mesh.geometry, mesh.matrix );
    	},
    	mergeVertices: function () {
    		const verticesMap = {};
    		const unique = [], changes = [];
    		const precisionPoints = 4;
    		const precision = Math.pow( 10, precisionPoints );
    		for ( let i = 0, il = this.vertices.length; i < il; i ++ ) {
    			const v = this.vertices[ i ];
    			const key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );
    			if ( verticesMap[ key ] === undefined ) {
    				verticesMap[ key ] = i;
    				unique.push( this.vertices[ i ] );
    				changes[ i ] = unique.length - 1;
    			} else {
    				changes[ i ] = changes[ verticesMap[ key ] ];
    			}
    		}
    		const faceIndicesToRemove = [];
    		for ( let i = 0, il = this.faces.length; i < il; i ++ ) {
    			const face = this.faces[ i ];
    			face.a = changes[ face.a ];
    			face.b = changes[ face.b ];
    			face.c = changes[ face.c ];
    			const indices = [ face.a, face.b, face.c ];
    			for ( let n = 0; n < 3; n ++ ) {
    				if ( indices[ n ] === indices[ ( n + 1 ) % 3 ] ) {
    					faceIndicesToRemove.push( i );
    					break;
    				}
    			}
    		}
    		for ( let i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {
    			const idx = faceIndicesToRemove[ i ];
    			this.faces.splice( idx, 1 );
    			for ( let j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {
    				this.faceVertexUvs[ j ].splice( idx, 1 );
    			}
    		}
    		const diff = this.vertices.length - unique.length;
    		this.vertices = unique;
    		return diff;
    	},
    	setFromPoints: function ( points ) {
    		this.vertices = [];
    		for ( let i = 0, l = points.length; i < l; i ++ ) {
    			const point = points[ i ];
    			this.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );
    		}
    		return this;
    	},
    	sortFacesByMaterialIndex: function () {
    		const faces = this.faces;
    		const length = faces.length;
    		for ( let i = 0; i < length; i ++ ) {
    			faces[ i ]._id = i;
    		}
    		function materialIndexSort( a, b ) {
    			return a.materialIndex - b.materialIndex;
    		}
    		faces.sort( materialIndexSort );
    		const uvs1 = this.faceVertexUvs[ 0 ];
    		const uvs2 = this.faceVertexUvs[ 1 ];
    		let newUvs1, newUvs2;
    		if ( uvs1 && uvs1.length === length ) newUvs1 = [];
    		if ( uvs2 && uvs2.length === length ) newUvs2 = [];
    		for ( let i = 0; i < length; i ++ ) {
    			const id = faces[ i ]._id;
    			if ( newUvs1 ) newUvs1.push( uvs1[ id ] );
    			if ( newUvs2 ) newUvs2.push( uvs2[ id ] );
    		}
    		if ( newUvs1 ) this.faceVertexUvs[ 0 ] = newUvs1;
    		if ( newUvs2 ) this.faceVertexUvs[ 1 ] = newUvs2;
    	},
    	toJSON: function () {
    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'Geometry',
    				generator: 'Geometry.toJSON'
    			}
    		};
    		data.uuid = this.uuid;
    		data.type = this.type;
    		if ( this.name !== '' ) data.name = this.name;
    		if ( this.parameters !== undefined ) {
    			const parameters = this.parameters;
    			for ( const key in parameters ) {
    				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];
    			}
    			return data;
    		}
    		const vertices = [];
    		for ( let i = 0; i < this.vertices.length; i ++ ) {
    			const vertex = this.vertices[ i ];
    			vertices.push( vertex.x, vertex.y, vertex.z );
    		}
    		const faces = [];
    		const normals = [];
    		const normalsHash = {};
    		const colors = [];
    		const colorsHash = {};
    		const uvs = [];
    		const uvsHash = {};
    		for ( let i = 0; i < this.faces.length; i ++ ) {
    			const face = this.faces[ i ];
    			const hasMaterial = true;
    			const hasFaceUv = false;
    			const hasFaceVertexUv = this.faceVertexUvs[ 0 ][ i ] !== undefined;
    			const hasFaceNormal = face.normal.length() > 0;
    			const hasFaceVertexNormal = face.vertexNormals.length > 0;
    			const hasFaceColor = face.color.r !== 1 || face.color.g !== 1 || face.color.b !== 1;
    			const hasFaceVertexColor = face.vertexColors.length > 0;
    			let faceType = 0;
    			faceType = setBit( faceType, 0, 0 );
    			faceType = setBit( faceType, 1, hasMaterial );
    			faceType = setBit( faceType, 2, hasFaceUv );
    			faceType = setBit( faceType, 3, hasFaceVertexUv );
    			faceType = setBit( faceType, 4, hasFaceNormal );
    			faceType = setBit( faceType, 5, hasFaceVertexNormal );
    			faceType = setBit( faceType, 6, hasFaceColor );
    			faceType = setBit( faceType, 7, hasFaceVertexColor );
    			faces.push( faceType );
    			faces.push( face.a, face.b, face.c );
    			faces.push( face.materialIndex );
    			if ( hasFaceVertexUv ) {
    				const faceVertexUvs = this.faceVertexUvs[ 0 ][ i ];
    				faces.push(
    					getUvIndex( faceVertexUvs[ 0 ] ),
    					getUvIndex( faceVertexUvs[ 1 ] ),
    					getUvIndex( faceVertexUvs[ 2 ] )
    				);
    			}
    			if ( hasFaceNormal ) {
    				faces.push( getNormalIndex( face.normal ) );
    			}
    			if ( hasFaceVertexNormal ) {
    				const vertexNormals = face.vertexNormals;
    				faces.push(
    					getNormalIndex( vertexNormals[ 0 ] ),
    					getNormalIndex( vertexNormals[ 1 ] ),
    					getNormalIndex( vertexNormals[ 2 ] )
    				);
    			}
    			if ( hasFaceColor ) {
    				faces.push( getColorIndex( face.color ) );
    			}
    			if ( hasFaceVertexColor ) {
    				const vertexColors = face.vertexColors;
    				faces.push(
    					getColorIndex( vertexColors[ 0 ] ),
    					getColorIndex( vertexColors[ 1 ] ),
    					getColorIndex( vertexColors[ 2 ] )
    				);
    			}
    		}
    		function setBit( value, position, enabled ) {
    			return enabled ? value | ( 1 << position ) : value & ( ~ ( 1 << position ) );
    		}
    		function getNormalIndex( normal ) {
    			const hash = normal.x.toString() + normal.y.toString() + normal.z.toString();
    			if ( normalsHash[ hash ] !== undefined ) {
    				return normalsHash[ hash ];
    			}
    			normalsHash[ hash ] = normals.length / 3;
    			normals.push( normal.x, normal.y, normal.z );
    			return normalsHash[ hash ];
    		}
    		function getColorIndex( color ) {
    			const hash = color.r.toString() + color.g.toString() + color.b.toString();
    			if ( colorsHash[ hash ] !== undefined ) {
    				return colorsHash[ hash ];
    			}
    			colorsHash[ hash ] = colors.length;
    			colors.push( color.getHex() );
    			return colorsHash[ hash ];
    		}
    		function getUvIndex( uv ) {
    			const hash = uv.x.toString() + uv.y.toString();
    			if ( uvsHash[ hash ] !== undefined ) {
    				return uvsHash[ hash ];
    			}
    			uvsHash[ hash ] = uvs.length / 2;
    			uvs.push( uv.x, uv.y );
    			return uvsHash[ hash ];
    		}
    		data.data = {};
    		data.data.vertices = vertices;
    		data.data.normals = normals;
    		if ( colors.length > 0 ) data.data.colors = colors;
    		if ( uvs.length > 0 ) data.data.uvs = [ uvs ];
    		data.data.faces = faces;
    		return data;
    	},
    	clone: function () {
    		return new Geometry().copy( this );
    	},
    	copy: function ( source ) {
    		this.vertices = [];
    		this.colors = [];
    		this.faces = [];
    		this.faceVertexUvs = [[]];
    		this.morphTargets = [];
    		this.morphNormals = [];
    		this.skinWeights = [];
    		this.skinIndices = [];
    		this.lineDistances = [];
    		this.boundingBox = null;
    		this.boundingSphere = null;
    		this.name = source.name;
    		const vertices = source.vertices;
    		for ( let i = 0, il = vertices.length; i < il; i ++ ) {
    			this.vertices.push( vertices[ i ].clone() );
    		}
    		const colors = source.colors;
    		for ( let i = 0, il = colors.length; i < il; i ++ ) {
    			this.colors.push( colors[ i ].clone() );
    		}
    		const faces = source.faces;
    		for ( let i = 0, il = faces.length; i < il; i ++ ) {
    			this.faces.push( faces[ i ].clone() );
    		}
    		for ( let i = 0, il = source.faceVertexUvs.length; i < il; i ++ ) {
    			const faceVertexUvs = source.faceVertexUvs[ i ];
    			if ( this.faceVertexUvs[ i ] === undefined ) {
    				this.faceVertexUvs[ i ] = [];
    			}
    			for ( let j = 0, jl = faceVertexUvs.length; j < jl; j ++ ) {
    				const uvs = faceVertexUvs[ j ], uvsCopy = [];
    				for ( let k = 0, kl = uvs.length; k < kl; k ++ ) {
    					const uv = uvs[ k ];
    					uvsCopy.push( uv.clone() );
    				}
    				this.faceVertexUvs[ i ].push( uvsCopy );
    			}
    		}
    		const morphTargets = source.morphTargets;
    		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {
    			const morphTarget = {};
    			morphTarget.name = morphTargets[ i ].name;
    			if ( morphTargets[ i ].vertices !== undefined ) {
    				morphTarget.vertices = [];
    				for ( let j = 0, jl = morphTargets[ i ].vertices.length; j < jl; j ++ ) {
    					morphTarget.vertices.push( morphTargets[ i ].vertices[ j ].clone() );
    				}
    			}
    			if ( morphTargets[ i ].normals !== undefined ) {
    				morphTarget.normals = [];
    				for ( let j = 0, jl = morphTargets[ i ].normals.length; j < jl; j ++ ) {
    					morphTarget.normals.push( morphTargets[ i ].normals[ j ].clone() );
    				}
    			}
    			this.morphTargets.push( morphTarget );
    		}
    		const morphNormals = source.morphNormals;
    		for ( let i = 0, il = morphNormals.length; i < il; i ++ ) {
    			const morphNormal = {};
    			if ( morphNormals[ i ].vertexNormals !== undefined ) {
    				morphNormal.vertexNormals = [];
    				for ( let j = 0, jl = morphNormals[ i ].vertexNormals.length; j < jl; j ++ ) {
    					const srcVertexNormal = morphNormals[ i ].vertexNormals[ j ];
    					const destVertexNormal = {};
    					destVertexNormal.a = srcVertexNormal.a.clone();
    					destVertexNormal.b = srcVertexNormal.b.clone();
    					destVertexNormal.c = srcVertexNormal.c.clone();
    					morphNormal.vertexNormals.push( destVertexNormal );
    				}
    			}
    			if ( morphNormals[ i ].faceNormals !== undefined ) {
    				morphNormal.faceNormals = [];
    				for ( let j = 0, jl = morphNormals[ i ].faceNormals.length; j < jl; j ++ ) {
    					morphNormal.faceNormals.push( morphNormals[ i ].faceNormals[ j ].clone() );
    				}
    			}
    			this.morphNormals.push( morphNormal );
    		}
    		const skinWeights = source.skinWeights;
    		for ( let i = 0, il = skinWeights.length; i < il; i ++ ) {
    			this.skinWeights.push( skinWeights[ i ].clone() );
    		}
    		const skinIndices = source.skinIndices;
    		for ( let i = 0, il = skinIndices.length; i < il; i ++ ) {
    			this.skinIndices.push( skinIndices[ i ].clone() );
    		}
    		const lineDistances = source.lineDistances;
    		for ( let i = 0, il = lineDistances.length; i < il; i ++ ) {
    			this.lineDistances.push( lineDistances[ i ] );
    		}
    		const boundingBox = source.boundingBox;
    		if ( boundingBox !== null ) {
    			this.boundingBox = boundingBox.clone();
    		}
    		const boundingSphere = source.boundingSphere;
    		if ( boundingSphere !== null ) {
    			this.boundingSphere = boundingSphere.clone();
    		}
    		this.elementsNeedUpdate = source.elementsNeedUpdate;
    		this.verticesNeedUpdate = source.verticesNeedUpdate;
    		this.uvsNeedUpdate = source.uvsNeedUpdate;
    		this.normalsNeedUpdate = source.normalsNeedUpdate;
    		this.colorsNeedUpdate = source.colorsNeedUpdate;
    		this.lineDistancesNeedUpdate = source.lineDistancesNeedUpdate;
    		this.groupsNeedUpdate = source.groupsNeedUpdate;
    		return this;
    	},
    	dispose: function () {
    		this.dispatchEvent( { type: 'dispose' } );
    	}
    } );
    class BoxGeometry extends Geometry {
    	constructor( width, height, depth, widthSegments, heightSegments, depthSegments ) {
    		super();
    		this.type = 'BoxGeometry';
    		this.parameters = {
    			width: width,
    			height: height,
    			depth: depth,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments,
    			depthSegments: depthSegments
    		};
    		this.fromBufferGeometry( new BoxBufferGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) );
    		this.mergeVertices();
    	}
    }
    class BoxBufferGeometry extends BufferGeometry {
    	constructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {
    		super();
    		this.type = 'BoxBufferGeometry';
    		this.parameters = {
    			width: width,
    			height: height,
    			depth: depth,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments,
    			depthSegments: depthSegments
    		};
    		const scope = this;
    		widthSegments = Math.floor( widthSegments );
    		heightSegments = Math.floor( heightSegments );
    		depthSegments = Math.floor( depthSegments );
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		let numberOfVertices = 0;
    		let groupStart = 0;
    		buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 );
    		buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 );
    		buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 );
    		buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 );
    		buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 );
    		buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 );
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    		function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {
    			const segmentWidth = width / gridX;
    			const segmentHeight = height / gridY;
    			const widthHalf = width / 2;
    			const heightHalf = height / 2;
    			const depthHalf = depth / 2;
    			const gridX1 = gridX + 1;
    			const gridY1 = gridY + 1;
    			let vertexCounter = 0;
    			let groupCount = 0;
    			const vector = new Vector3();
    			for ( let iy = 0; iy < gridY1; iy ++ ) {
    				const y = iy * segmentHeight - heightHalf;
    				for ( let ix = 0; ix < gridX1; ix ++ ) {
    					const x = ix * segmentWidth - widthHalf;
    					vector[ u ] = x * udir;
    					vector[ v ] = y * vdir;
    					vector[ w ] = depthHalf;
    					vertices.push( vector.x, vector.y, vector.z );
    					vector[ u ] = 0;
    					vector[ v ] = 0;
    					vector[ w ] = depth > 0 ? 1 : - 1;
    					normals.push( vector.x, vector.y, vector.z );
    					uvs.push( ix / gridX );
    					uvs.push( 1 - ( iy / gridY ) );
    					vertexCounter += 1;
    				}
    			}
    			for ( let iy = 0; iy < gridY; iy ++ ) {
    				for ( let ix = 0; ix < gridX; ix ++ ) {
    					const a = numberOfVertices + ix + gridX1 * iy;
    					const b = numberOfVertices + ix + gridX1 * ( iy + 1 );
    					const c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
    					const d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;
    					indices.push( a, b, d );
    					indices.push( b, c, d );
    					groupCount += 6;
    				}
    			}
    			scope.addGroup( groupStart, groupCount, materialIndex );
    			groupStart += groupCount;
    			numberOfVertices += vertexCounter;
    		}
    	}
    }
    function cloneUniforms( src ) {
    	const dst = {};
    	for ( const u in src ) {
    		dst[ u ] = {};
    		for ( const p in src[ u ] ) {
    			const property = src[ u ][ p ];
    			if ( property && ( property.isColor ||
    				property.isMatrix3 || property.isMatrix4 ||
    				property.isVector2 || property.isVector3 || property.isVector4 ||
    				property.isTexture ) ) {
    				dst[ u ][ p ] = property.clone();
    			} else if ( Array.isArray( property ) ) {
    				dst[ u ][ p ] = property.slice();
    			} else {
    				dst[ u ][ p ] = property;
    			}
    		}
    	}
    	return dst;
    }
    function mergeUniforms( uniforms ) {
    	const merged = {};
    	for ( let u = 0; u < uniforms.length; u ++ ) {
    		const tmp = cloneUniforms( uniforms[ u ] );
    		for ( const p in tmp ) {
    			merged[ p ] = tmp[ p ];
    		}
    	}
    	return merged;
    }
    const UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };
    var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";
    var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";
    function ShaderMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'ShaderMaterial';
    	this.defines = {};
    	this.uniforms = {};
    	this.vertexShader = default_vertex;
    	this.fragmentShader = default_fragment;
    	this.linewidth = 1;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.fog = false;
    	this.lights = false;
    	this.clipping = false;
    	this.skinning = false;
    	this.morphTargets = false;
    	this.morphNormals = false;
    	this.extensions = {
    		derivatives: false,
    		fragDepth: false,
    		drawBuffers: false,
    		shaderTextureLOD: false
    	};
    	this.defaultAttributeValues = {
    		'color': [ 1, 1, 1 ],
    		'uv': [ 0, 0 ],
    		'uv2': [ 0, 0 ]
    	};
    	this.index0AttributeName = undefined;
    	this.uniformsNeedUpdate = false;
    	this.glslVersion = null;
    	if ( parameters !== undefined ) {
    		if ( parameters.attributes !== undefined ) {
    			console.error( 'THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.' );
    		}
    		this.setValues( parameters );
    	}
    }
    ShaderMaterial.prototype = Object.create( Material.prototype );
    ShaderMaterial.prototype.constructor = ShaderMaterial;
    ShaderMaterial.prototype.isShaderMaterial = true;
    ShaderMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.fragmentShader = source.fragmentShader;
    	this.vertexShader = source.vertexShader;
    	this.uniforms = cloneUniforms( source.uniforms );
    	this.defines = Object.assign( {}, source.defines );
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	this.lights = source.lights;
    	this.clipping = source.clipping;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.morphNormals = source.morphNormals;
    	this.extensions = Object.assign( {}, source.extensions );
    	this.glslVersion = source.glslVersion;
    	return this;
    };
    ShaderMaterial.prototype.toJSON = function ( meta ) {
    	const data = Material.prototype.toJSON.call( this, meta );
    	data.glslVersion = this.glslVersion;
    	data.uniforms = {};
    	for ( const name in this.uniforms ) {
    		const uniform = this.uniforms[ name ];
    		const value = uniform.value;
    		if ( value && value.isTexture ) {
    			data.uniforms[ name ] = {
    				type: 't',
    				value: value.toJSON( meta ).uuid
    			};
    		} else if ( value && value.isColor ) {
    			data.uniforms[ name ] = {
    				type: 'c',
    				value: value.getHex()
    			};
    		} else if ( value && value.isVector2 ) {
    			data.uniforms[ name ] = {
    				type: 'v2',
    				value: value.toArray()
    			};
    		} else if ( value && value.isVector3 ) {
    			data.uniforms[ name ] = {
    				type: 'v3',
    				value: value.toArray()
    			};
    		} else if ( value && value.isVector4 ) {
    			data.uniforms[ name ] = {
    				type: 'v4',
    				value: value.toArray()
    			};
    		} else if ( value && value.isMatrix3 ) {
    			data.uniforms[ name ] = {
    				type: 'm3',
    				value: value.toArray()
    			};
    		} else if ( value && value.isMatrix4 ) {
    			data.uniforms[ name ] = {
    				type: 'm4',
    				value: value.toArray()
    			};
    		} else {
    			data.uniforms[ name ] = {
    				value: value
    			};
    		}
    	}
    	if ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;
    	data.vertexShader = this.vertexShader;
    	data.fragmentShader = this.fragmentShader;
    	const extensions = {};
    	for ( const key in this.extensions ) {
    		if ( this.extensions[ key ] === true ) extensions[ key ] = true;
    	}
    	if ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;
    	return data;
    };
    function Camera() {
    	Object3D.call( this );
    	this.type = 'Camera';
    	this.matrixWorldInverse = new Matrix4();
    	this.projectionMatrix = new Matrix4();
    	this.projectionMatrixInverse = new Matrix4();
    }
    Camera.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Camera,
    	isCamera: true,
    	copy: function ( source, recursive ) {
    		Object3D.prototype.copy.call( this, source, recursive );
    		this.matrixWorldInverse.copy( source.matrixWorldInverse );
    		this.projectionMatrix.copy( source.projectionMatrix );
    		this.projectionMatrixInverse.copy( source.projectionMatrixInverse );
    		return this;
    	},
    	getWorldDirection: function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Camera: .getWorldDirection() target is now required' );
    			target = new Vector3();
    		}
    		this.updateMatrixWorld( true );
    		const e = this.matrixWorld.elements;
    		return target.set( - e[ 8 ], - e[ 9 ], - e[ 10 ] ).normalize();
    	},
    	updateMatrixWorld: function ( force ) {
    		Object3D.prototype.updateMatrixWorld.call( this, force );
    		this.matrixWorldInverse.getInverse( this.matrixWorld );
    	},
    	updateWorldMatrix: function ( updateParents, updateChildren ) {
    		Object3D.prototype.updateWorldMatrix.call( this, updateParents, updateChildren );
    		this.matrixWorldInverse.getInverse( this.matrixWorld );
    	},
    	clone: function () {
    		return new this.constructor().copy( this );
    	}
    } );
    function PerspectiveCamera( fov, aspect, near, far ) {
    	Camera.call( this );
    	this.type = 'PerspectiveCamera';
    	this.fov = fov !== undefined ? fov : 50;
    	this.zoom = 1;
    	this.near = near !== undefined ? near : 0.1;
    	this.far = far !== undefined ? far : 2000;
    	this.focus = 10;
    	this.aspect = aspect !== undefined ? aspect : 1;
    	this.view = null;
    	this.filmGauge = 35;
    	this.filmOffset = 0;
    	this.updateProjectionMatrix();
    }
    PerspectiveCamera.prototype = Object.assign( Object.create( Camera.prototype ), {
    	constructor: PerspectiveCamera,
    	isPerspectiveCamera: true,
    	copy: function ( source, recursive ) {
    		Camera.prototype.copy.call( this, source, recursive );
    		this.fov = source.fov;
    		this.zoom = source.zoom;
    		this.near = source.near;
    		this.far = source.far;
    		this.focus = source.focus;
    		this.aspect = source.aspect;
    		this.view = source.view === null ? null : Object.assign( {}, source.view );
    		this.filmGauge = source.filmGauge;
    		this.filmOffset = source.filmOffset;
    		return this;
    	},
    	setFocalLength: function ( focalLength ) {
    		const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
    		this.fov = MathUtils.RAD2DEG * 2 * Math.atan( vExtentSlope );
    		this.updateProjectionMatrix();
    	},
    	getFocalLength: function () {
    		const vExtentSlope = Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov );
    		return 0.5 * this.getFilmHeight() / vExtentSlope;
    	},
    	getEffectiveFOV: function () {
    		return MathUtils.RAD2DEG * 2 * Math.atan(
    			Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom );
    	},
    	getFilmWidth: function () {
    		return this.filmGauge * Math.min( this.aspect, 1 );
    	},
    	getFilmHeight: function () {
    		return this.filmGauge / Math.max( this.aspect, 1 );
    	},
    	setViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {
    		this.aspect = fullWidth / fullHeight;
    		if ( this.view === null ) {
    			this.view = {
    				enabled: true,
    				fullWidth: 1,
    				fullHeight: 1,
    				offsetX: 0,
    				offsetY: 0,
    				width: 1,
    				height: 1
    			};
    		}
    		this.view.enabled = true;
    		this.view.fullWidth = fullWidth;
    		this.view.fullHeight = fullHeight;
    		this.view.offsetX = x;
    		this.view.offsetY = y;
    		this.view.width = width;
    		this.view.height = height;
    		this.updateProjectionMatrix();
    	},
    	clearViewOffset: function () {
    		if ( this.view !== null ) {
    			this.view.enabled = false;
    		}
    		this.updateProjectionMatrix();
    	},
    	updateProjectionMatrix: function () {
    		const near = this.near;
    		let top = near * Math.tan( MathUtils.DEG2RAD * 0.5 * this.fov ) / this.zoom;
    		let height = 2 * top;
    		let width = this.aspect * height;
    		let left = - 0.5 * width;
    		const view = this.view;
    		if ( this.view !== null && this.view.enabled ) {
    			const fullWidth = view.fullWidth,
    				fullHeight = view.fullHeight;
    			left += view.offsetX * width / fullWidth;
    			top -= view.offsetY * height / fullHeight;
    			width *= view.width / fullWidth;
    			height *= view.height / fullHeight;
    		}
    		const skew = this.filmOffset;
    		if ( skew !== 0 ) left += near * skew / this.getFilmWidth();
    		this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far );
    		this.projectionMatrixInverse.getInverse( this.projectionMatrix );
    	},
    	toJSON: function ( meta ) {
    		const data = Object3D.prototype.toJSON.call( this, meta );
    		data.object.fov = this.fov;
    		data.object.zoom = this.zoom;
    		data.object.near = this.near;
    		data.object.far = this.far;
    		data.object.focus = this.focus;
    		data.object.aspect = this.aspect;
    		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
    		data.object.filmGauge = this.filmGauge;
    		data.object.filmOffset = this.filmOffset;
    		return data;
    	}
    } );
    const fov = 90, aspect = 1;
    function CubeCamera( near, far, renderTarget ) {
    	Object3D.call( this );
    	this.type = 'CubeCamera';
    	if ( renderTarget.isWebGLCubeRenderTarget !== true ) {
    		console.error( 'THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.' );
    		return;
    	}
    	this.renderTarget = renderTarget;
    	const cameraPX = new PerspectiveCamera( fov, aspect, near, far );
    	cameraPX.layers = this.layers;
    	cameraPX.up.set( 0, - 1, 0 );
    	cameraPX.lookAt( new Vector3( 1, 0, 0 ) );
    	this.add( cameraPX );
    	const cameraNX = new PerspectiveCamera( fov, aspect, near, far );
    	cameraNX.layers = this.layers;
    	cameraNX.up.set( 0, - 1, 0 );
    	cameraNX.lookAt( new Vector3( - 1, 0, 0 ) );
    	this.add( cameraNX );
    	const cameraPY = new PerspectiveCamera( fov, aspect, near, far );
    	cameraPY.layers = this.layers;
    	cameraPY.up.set( 0, 0, 1 );
    	cameraPY.lookAt( new Vector3( 0, 1, 0 ) );
    	this.add( cameraPY );
    	const cameraNY = new PerspectiveCamera( fov, aspect, near, far );
    	cameraNY.layers = this.layers;
    	cameraNY.up.set( 0, 0, - 1 );
    	cameraNY.lookAt( new Vector3( 0, - 1, 0 ) );
    	this.add( cameraNY );
    	const cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
    	cameraPZ.layers = this.layers;
    	cameraPZ.up.set( 0, - 1, 0 );
    	cameraPZ.lookAt( new Vector3( 0, 0, 1 ) );
    	this.add( cameraPZ );
    	const cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
    	cameraNZ.layers = this.layers;
    	cameraNZ.up.set( 0, - 1, 0 );
    	cameraNZ.lookAt( new Vector3( 0, 0, - 1 ) );
    	this.add( cameraNZ );
    	this.update = function ( renderer, scene ) {
    		if ( this.parent === null ) this.updateMatrixWorld();
    		const currentXrEnabled = renderer.xr.enabled;
    		const currentRenderTarget = renderer.getRenderTarget();
    		renderer.xr.enabled = false;
    		const generateMipmaps = renderTarget.texture.generateMipmaps;
    		renderTarget.texture.generateMipmaps = false;
    		renderer.setRenderTarget( renderTarget, 0 );
    		renderer.render( scene, cameraPX );
    		renderer.setRenderTarget( renderTarget, 1 );
    		renderer.render( scene, cameraNX );
    		renderer.setRenderTarget( renderTarget, 2 );
    		renderer.render( scene, cameraPY );
    		renderer.setRenderTarget( renderTarget, 3 );
    		renderer.render( scene, cameraNY );
    		renderer.setRenderTarget( renderTarget, 4 );
    		renderer.render( scene, cameraPZ );
    		renderTarget.texture.generateMipmaps = generateMipmaps;
    		renderer.setRenderTarget( renderTarget, 5 );
    		renderer.render( scene, cameraNZ );
    		renderer.setRenderTarget( currentRenderTarget );
    		renderer.xr.enabled = currentXrEnabled;
    	};
    	this.clear = function ( renderer, color, depth, stencil ) {
    		const currentRenderTarget = renderer.getRenderTarget();
    		for ( let i = 0; i < 6; i ++ ) {
    			renderer.setRenderTarget( renderTarget, i );
    			renderer.clear( color, depth, stencil );
    		}
    		renderer.setRenderTarget( currentRenderTarget );
    	};
    }
    CubeCamera.prototype = Object.create( Object3D.prototype );
    CubeCamera.prototype.constructor = CubeCamera;
    function WebGLCubeRenderTarget( size, options, dummy ) {
    	if ( Number.isInteger( options ) ) {
    		console.warn( 'THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )' );
    		options = dummy;
    	}
    	WebGLRenderTarget.call( this, size, size, options );
    	this.texture.isWebGLCubeRenderTargetTexture = true;
    }
    WebGLCubeRenderTarget.prototype = Object.create( WebGLRenderTarget.prototype );
    WebGLCubeRenderTarget.prototype.constructor = WebGLCubeRenderTarget;
    WebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;
    WebGLCubeRenderTarget.prototype.fromEquirectangularTexture = function ( renderer, texture ) {
    	this.texture.type = texture.type;
    	this.texture.format = RGBAFormat;
    	this.texture.encoding = texture.encoding;
    	this.texture.generateMipmaps = texture.generateMipmaps;
    	this.texture.minFilter = texture.minFilter;
    	this.texture.magFilter = texture.magFilter;
    	const shader = {
    		uniforms: {
    			tEquirect: { value: null },
    		},
    		vertexShader: `

			varying vec3 vWorldDirection;

			vec3 transformDirection( in vec3 dir, in mat4 matrix ) {

				return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );

			}

			void main() {

				vWorldDirection = transformDirection( position, modelMatrix );

				#include <begin_vertex>
				#include <project_vertex>

			}
		`,
    		fragmentShader: `

			uniform sampler2D tEquirect;

			varying vec3 vWorldDirection;

			#include <common>

			void main() {

				vec3 direction = normalize( vWorldDirection );

				vec2 sampleUV = equirectUv( direction );

				gl_FragColor = texture2D( tEquirect, sampleUV );

			}
		`
    	};
    	const geometry = new BoxBufferGeometry( 5, 5, 5 );
    	const material = new ShaderMaterial( {
    		name: 'CubemapFromEquirect',
    		uniforms: cloneUniforms( shader.uniforms ),
    		vertexShader: shader.vertexShader,
    		fragmentShader: shader.fragmentShader,
    		side: BackSide,
    		blending: NoBlending
    	} );
    	material.uniforms.tEquirect.value = texture;
    	const mesh = new Mesh( geometry, material );
    	const currentMinFilter = texture.minFilter;
    	if ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;
    	const camera = new CubeCamera( 1, 10, this );
    	camera.update( renderer, mesh );
    	texture.minFilter = currentMinFilter;
    	mesh.geometry.dispose();
    	mesh.material.dispose();
    	return this;
    };
    function DataTexture( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {
    	Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
    	this.image = { data: data || null, width: width || 1, height: height || 1 };
    	this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
    	this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
    	this.generateMipmaps = false;
    	this.flipY = false;
    	this.unpackAlignment = 1;
    	this.needsUpdate = true;
    }
    DataTexture.prototype = Object.create( Texture.prototype );
    DataTexture.prototype.constructor = DataTexture;
    DataTexture.prototype.isDataTexture = true;
    const _sphere$1 = new Sphere();
    const _vector$5 = new Vector3();
    class Frustum {
    	constructor( p0, p1, p2, p3, p4, p5 ) {
    		this.planes = [
    			( p0 !== undefined ) ? p0 : new Plane(),
    			( p1 !== undefined ) ? p1 : new Plane(),
    			( p2 !== undefined ) ? p2 : new Plane(),
    			( p3 !== undefined ) ? p3 : new Plane(),
    			( p4 !== undefined ) ? p4 : new Plane(),
    			( p5 !== undefined ) ? p5 : new Plane()
    		];
    	}
    	set( p0, p1, p2, p3, p4, p5 ) {
    		const planes = this.planes;
    		planes[ 0 ].copy( p0 );
    		planes[ 1 ].copy( p1 );
    		planes[ 2 ].copy( p2 );
    		planes[ 3 ].copy( p3 );
    		planes[ 4 ].copy( p4 );
    		planes[ 5 ].copy( p5 );
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( frustum ) {
    		const planes = this.planes;
    		for ( let i = 0; i < 6; i ++ ) {
    			planes[ i ].copy( frustum.planes[ i ] );
    		}
    		return this;
    	}
    	setFromProjectionMatrix( m ) {
    		const planes = this.planes;
    		const me = m.elements;
    		const me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
    		const me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
    		const me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
    		const me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];
    		planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
    		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
    		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
    		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
    		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
    		planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();
    		return this;
    	}
    	intersectsObject( object ) {
    		const geometry = object.geometry;
    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
    		_sphere$1.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );
    		return this.intersectsSphere( _sphere$1 );
    	}
    	intersectsSprite( sprite ) {
    		_sphere$1.center.set( 0, 0, 0 );
    		_sphere$1.radius = 0.7071067811865476;
    		_sphere$1.applyMatrix4( sprite.matrixWorld );
    		return this.intersectsSphere( _sphere$1 );
    	}
    	intersectsSphere( sphere ) {
    		const planes = this.planes;
    		const center = sphere.center;
    		const negRadius = - sphere.radius;
    		for ( let i = 0; i < 6; i ++ ) {
    			const distance = planes[ i ].distanceToPoint( center );
    			if ( distance < negRadius ) {
    				return false;
    			}
    		}
    		return true;
    	}
    	intersectsBox( box ) {
    		const planes = this.planes;
    		for ( let i = 0; i < 6; i ++ ) {
    			const plane = planes[ i ];
    			_vector$5.x = plane.normal.x > 0 ? box.max.x : box.min.x;
    			_vector$5.y = plane.normal.y > 0 ? box.max.y : box.min.y;
    			_vector$5.z = plane.normal.z > 0 ? box.max.z : box.min.z;
    			if ( plane.distanceToPoint( _vector$5 ) < 0 ) {
    				return false;
    			}
    		}
    		return true;
    	}
    	containsPoint( point ) {
    		const planes = this.planes;
    		for ( let i = 0; i < 6; i ++ ) {
    			if ( planes[ i ].distanceToPoint( point ) < 0 ) {
    				return false;
    			}
    		}
    		return true;
    	}
    }
    function WebGLAnimation() {
    	let context = null;
    	let isAnimating = false;
    	let animationLoop = null;
    	let requestId = null;
    	function onAnimationFrame( time, frame ) {
    		animationLoop( time, frame );
    		requestId = context.requestAnimationFrame( onAnimationFrame );
    	}
    	return {
    		start: function () {
    			if ( isAnimating === true ) return;
    			if ( animationLoop === null ) return;
    			requestId = context.requestAnimationFrame( onAnimationFrame );
    			isAnimating = true;
    		},
    		stop: function () {
    			context.cancelAnimationFrame( requestId );
    			isAnimating = false;
    		},
    		setAnimationLoop: function ( callback ) {
    			animationLoop = callback;
    		},
    		setContext: function ( value ) {
    			context = value;
    		}
    	};
    }
    function WebGLAttributes( gl, capabilities ) {
    	const isWebGL2 = capabilities.isWebGL2;
    	const buffers = new WeakMap();
    	function createBuffer( attribute, bufferType ) {
    		const array = attribute.array;
    		const usage = attribute.usage;
    		const buffer = gl.createBuffer();
    		gl.bindBuffer( bufferType, buffer );
    		gl.bufferData( bufferType, array, usage );
    		attribute.onUploadCallback();
    		let type = 5126;
    		if ( array instanceof Float32Array ) {
    			type = 5126;
    		} else if ( array instanceof Float64Array ) {
    			console.warn( 'THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.' );
    		} else if ( array instanceof Uint16Array ) {
    			type = 5123;
    		} else if ( array instanceof Int16Array ) {
    			type = 5122;
    		} else if ( array instanceof Uint32Array ) {
    			type = 5125;
    		} else if ( array instanceof Int32Array ) {
    			type = 5124;
    		} else if ( array instanceof Int8Array ) {
    			type = 5120;
    		} else if ( array instanceof Uint8Array ) {
    			type = 5121;
    		}
    		return {
    			buffer: buffer,
    			type: type,
    			bytesPerElement: array.BYTES_PER_ELEMENT,
    			version: attribute.version
    		};
    	}
    	function updateBuffer( buffer, attribute, bufferType ) {
    		const array = attribute.array;
    		const updateRange = attribute.updateRange;
    		gl.bindBuffer( bufferType, buffer );
    		if ( updateRange.count === - 1 ) {
    			gl.bufferSubData( bufferType, 0, array );
    		} else {
    			if ( isWebGL2 ) {
    				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
    					array, updateRange.offset, updateRange.count );
    			} else {
    				gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
    					array.subarray( updateRange.offset, updateRange.offset + updateRange.count ) );
    			}
    			updateRange.count = - 1;
    		}
    	}
    	function get( attribute ) {
    		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
    		return buffers.get( attribute );
    	}
    	function remove( attribute ) {
    		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
    		const data = buffers.get( attribute );
    		if ( data ) {
    			gl.deleteBuffer( data.buffer );
    			buffers.delete( attribute );
    		}
    	}
    	function update( attribute, bufferType ) {
    		if ( attribute.isGLBufferAttribute ) {
    			var cached = buffers.get( attribute );
    			if ( ! cached || cached.version < attribute.version ) {
    				buffers.set( attribute, {
    					buffer: attribute.buffer,
    					type: attribute.type,
    					bytesPerElement: attribute.elementSize,
    					version: attribute.version
    				} );
    			}
    			return;
    		}
    		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
    		const data = buffers.get( attribute );
    		if ( data === undefined ) {
    			buffers.set( attribute, createBuffer( attribute, bufferType ) );
    		} else if ( data.version < attribute.version ) {
    			updateBuffer( data.buffer, attribute, bufferType );
    			data.version = attribute.version;
    		}
    	}
    	return {
    		get: get,
    		remove: remove,
    		update: update
    	};
    }
    class PlaneGeometry extends Geometry {
    	constructor( width, height, widthSegments, heightSegments ) {
    		super();
    		this.type = 'PlaneGeometry';
    		this.parameters = {
    			width: width,
    			height: height,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments
    		};
    		this.fromBufferGeometry( new PlaneBufferGeometry( width, height, widthSegments, heightSegments ) );
    		this.mergeVertices();
    	}
    }
    class PlaneBufferGeometry extends BufferGeometry {
    	constructor( width, height, widthSegments, heightSegments ) {
    		super();
    		this.type = 'PlaneBufferGeometry';
    		this.parameters = {
    			width: width,
    			height: height,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments
    		};
    		width = width || 1;
    		height = height || 1;
    		const width_half = width / 2;
    		const height_half = height / 2;
    		const gridX = Math.floor( widthSegments ) || 1;
    		const gridY = Math.floor( heightSegments ) || 1;
    		const gridX1 = gridX + 1;
    		const gridY1 = gridY + 1;
    		const segment_width = width / gridX;
    		const segment_height = height / gridY;
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		for ( let iy = 0; iy < gridY1; iy ++ ) {
    			const y = iy * segment_height - height_half;
    			for ( let ix = 0; ix < gridX1; ix ++ ) {
    				const x = ix * segment_width - width_half;
    				vertices.push( x, - y, 0 );
    				normals.push( 0, 0, 1 );
    				uvs.push( ix / gridX );
    				uvs.push( 1 - ( iy / gridY ) );
    			}
    		}
    		for ( let iy = 0; iy < gridY; iy ++ ) {
    			for ( let ix = 0; ix < gridX; ix ++ ) {
    				const a = ix + gridX1 * iy;
    				const b = ix + gridX1 * ( iy + 1 );
    				const c = ( ix + 1 ) + gridX1 * ( iy + 1 );
    				const d = ( ix + 1 ) + gridX1 * iy;
    				indices.push( a, b, d );
    				indices.push( b, c, d );
    			}
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    	}
    }
    var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";
    var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
    var alphatest_fragment = "#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif";
    var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif";
    var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";
    var begin_vertex = "vec3 transformed = vec3( position );";
    var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";
    var bsdfs = "vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\n}\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\tif( cutoffDistance > 0.0 ) {\n\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t}\n\treturn distanceFalloff;\n#else\n\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t}\n\treturn 1.0;\n#endif\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\n\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\n\treturn Fr * fresnel + F0;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\n\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\treturn specularColor * brdf.x + brdf.y;\n}\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\tvec3 FssEss = F * brdf.x + brdf.y;\n\tfloat Ess = brdf.x + brdf.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie(float roughness, float NoH) {\n\tfloat invAlpha = 1.0 / roughness;\n\tfloat cos2h = NoH * NoH;\n\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\n}\nfloat V_Neubelt(float NoV, float NoL) {\n\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\n}\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\n\tvec3 N = geometry.normal;\n\tvec3 V = geometry.viewDir;\n\tvec3 H = normalize( V + L );\n\tfloat dotNH = saturate( dot( N, H ) );\n\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\n}\n#endif";
    var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 );\n\t\tfDet *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";
    var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";
    var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";
    var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";
    var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";
    var color_fragment = "#ifdef USE_COLOR\n\tdiffuseColor.rgb *= vColor;\n#endif";
    var color_pars_fragment = "#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif";
    var color_pars_vertex = "#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";
    var color_vertex = "#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor.xyz *= color.xyz;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";
    var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}";
    var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_maxMipLevel 8.0\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_maxTileSize 256.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\n\t\tvec2 f = fract( uv );\n\t\tuv += 0.5 - f;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tif ( mipInt < cubeUV_maxMipLevel ) {\n\t\t\tuv.y += 2.0 * cubeUV_maxTileSize;\n\t\t}\n\t\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\n\t\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\n\t\tuv *= texelSize;\n\t\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x += texelSize;\n\t\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.y += texelSize;\n\t\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x -= texelSize;\n\t\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tvec3 tm = mix( tl, tr, f.x );\n\t\tvec3 bm = mix( bl, br, f.x );\n\t\treturn mix( tm, bm, f.y );\n\t}\n\t#define r0 1.0\n\t#define v0 0.339\n\t#define m0 - 2.0\n\t#define r1 0.8\n\t#define v1 0.276\n\t#define m1 - 1.0\n\t#define r4 0.4\n\t#define v4 0.046\n\t#define m4 2.0\n\t#define r5 0.305\n\t#define v5 0.016\n\t#define m5 3.0\n\t#define r6 0.21\n\t#define v6 0.0038\n\t#define m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= r1 ) {\n\t\t\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\n\t\t} else if ( roughness >= r4 ) {\n\t\t\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\n\t\t} else if ( roughness >= r5 ) {\n\t\t\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\n\t\t} else if ( roughness >= r6 ) {\n\t\t\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";
    var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";
    var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";
    var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";
    var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";
    var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";
    var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";
    var encodings_pars_fragment = "\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat D = max( maxRange / maxRGB, 1.0 );\n\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value ) {\n\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\n\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract( Le );\n\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\n\treturn vec4( max( vRGB, 0.0 ), 1.0 );\n}";
    var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifndef ENVMAP_TYPE_CUBE_UV\n\t\tenvColor = envMapTexelToLinear( envColor );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";
    var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";
    var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";
    var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";
    var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";
    var fog_vertex = "#ifdef USE_FOG\n\tfogDepth = - mvPosition.z;\n#endif";
    var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float fogDepth;\n#endif";
    var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";
    var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";
    var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn texture2D( gradientMap, coord ).rgb;\n\t#else\n\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t#endif\n}";
    var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\treflectedLight.indirectDiffuse += PI * lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n#endif";
    var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";
    var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry );\n#ifdef DOUBLE_SIDED\n\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\n\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry );\n#endif\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif";
    var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\n\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif";
    var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( -viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( -viewDir, normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif";
    var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";
    var lights_toon_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)";
    var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";
    var lights_phong_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";
    var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.specularRoughness = max( roughnessFactor, 0.0525 );material.specularRoughness += geometryRoughness;\nmaterial.specularRoughness = min( material.specularRoughness, 1.0 );\n#ifdef REFLECTIVITY\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#endif\n#ifdef CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheen;\n#endif";
    var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat specularRoughness;\n\tvec3 specularColor;\n#ifdef CLEARCOAT\n\tfloat clearcoat;\n\tfloat clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tvec3 sheenColor;\n#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(    0, 1,    0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = ccDotNL * directLight.color;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tccIrradiance *= PI;\n\t\t#endif\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\n\t\t\tmaterial.specularRoughness,\n\t\t\tdirectLight.direction,\n\t\t\tgeometry,\n\t\t\tmaterial.sheenColor\n\t\t);\n\t#else\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\n\t#endif\n\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t\tfloat ccDotNL = ccDotNV;\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\tfloat clearcoatInv = 1.0 - clearcoatDHR;\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";
    var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";
    var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\n\t#ifdef CLEARCOAT\n\t\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\n\t#endif\n#endif";
    var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";
    var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";
    var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";
    var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";
    var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";
    var map_fragment = "#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif";
    var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";
    var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";
    var map_particle_pars_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
    var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";
    var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";
    var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n#endif";
    var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifndef USE_MORPHNORMALS\n\t\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\t\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif";
    var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t#endif\n#endif";
    var normal_fragment_begin = "#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\t\tbitangent = bitangent * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";
    var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( -vViewPosition, normal, mapN );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd() );\n#endif";
    var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tfloat scale = sign( st1.t * st0.s - st0.t * st1.s );\n\t\tvec3 S = normalize( ( q0 * st1.t - q1 * st0.t ) * scale );\n\t\tvec3 T = normalize( ( - q0 * st1.s + q1 * st0.s ) * scale );\n\t\tvec3 N = normalize( surf_norm );\n\t\tmat3 tsn = mat3( S, T, N );\n\t\tmapN.xy *= ( float( gl_FrontFacing ) * 2.0 - 1.0 );\n\t\treturn normalize( tsn * mapN );\n\t}\n#endif";
    var clearcoat_normal_fragment_begin = "#ifdef CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";
    var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN );\n\t#endif\n#endif";
    var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";
    var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ));\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w);\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";
    var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";
    var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";
    var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";
    var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";
    var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";
    var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";
    var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";
    var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";
    var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif";
    var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";
    var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
    var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif";
    var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";
    var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";
    var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";
    var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";
    var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";
    var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(  1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,  1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,  1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";
    var transmissionmap_fragment = "#ifdef USE_TRANSMISSIONMAP\n\ttotalTransmission *= texture2D( transmissionMap, vUv ).r;\n#endif";
    var transmissionmap_pars_fragment = "#ifdef USE_TRANSMISSIONMAP\n\tuniform sampler2D transmissionMap;\n#endif";
    var uv_pars_fragment = "#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif";
    var uv_pars_vertex = "#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif";
    var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";
    var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";
    var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif";
    var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif";
    var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";
    var background_frag = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
    var background_vert = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
    var cube_frag = "#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
    var cube_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";
    var depth_frag = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";
    var depth_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";
    var distanceRGBA_frag = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";
    var distanceRGBA_vert = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";
    var equirect_frag = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tvec4 texColor = texture2D( tEquirect, sampleUV );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
    var equirect_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";
    var linedashed_frag = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
    var linedashed_vert = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
    var meshbasic_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
    var meshbasic_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_ENVMAP\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";
    var meshlambert_frag = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
    var meshlambert_vert = "#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
    var meshmatcap_frag = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t\tmatcapColor = matcapTexelToLinear( matcapColor );\n\t#else\n\t\tvec4 matcapColor = vec4( 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
    var meshmatcap_vert = "#define MATCAP\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#ifndef FLAT_SHADED\n\t\tvNormal = normalize( transformedNormal );\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";
    var meshtoon_frag = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
    var meshtoon_vert = "#define TOON\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
    var meshphong_frag = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
    var meshphong_vert = "#define PHONG\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
    var meshphysical_frag = "#define STANDARD\n#ifdef PHYSICAL\n\t#define REFLECTIVITY\n\t#define CLEARCOAT\n\t#define TRANSMISSION\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef TRANSMISSION\n\tuniform float transmission;\n#endif\n#ifdef REFLECTIVITY\n\tuniform float reflectivity;\n#endif\n#ifdef CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheen;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <transmissionmap_pars_fragment>\n#include <bsdfs>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <lights_physical_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#ifdef TRANSMISSION\n\t\tfloat totalTransmission = transmission;\n\t#endif\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <transmissionmap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#ifdef TRANSMISSION\n\t\tdiffuseColor.a *= saturate( 1. - totalTransmission + linearToRelativeLuminance( reflectedLight.directSpecular + reflectedLight.indirectSpecular ) );\n\t#endif\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
    var meshphysical_vert = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
    var normal_frag = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}";
    var normal_vert = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";
    var points_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
    var points_vert = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";
    var shadow_frag = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
    var shadow_vert = "#include <common>\n#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
    var sprite_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
    var sprite_vert = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
    const ShaderChunk = {
    	alphamap_fragment: alphamap_fragment,
    	alphamap_pars_fragment: alphamap_pars_fragment,
    	alphatest_fragment: alphatest_fragment,
    	aomap_fragment: aomap_fragment,
    	aomap_pars_fragment: aomap_pars_fragment,
    	begin_vertex: begin_vertex,
    	beginnormal_vertex: beginnormal_vertex,
    	bsdfs: bsdfs,
    	bumpmap_pars_fragment: bumpmap_pars_fragment,
    	clipping_planes_fragment: clipping_planes_fragment,
    	clipping_planes_pars_fragment: clipping_planes_pars_fragment,
    	clipping_planes_pars_vertex: clipping_planes_pars_vertex,
    	clipping_planes_vertex: clipping_planes_vertex,
    	color_fragment: color_fragment,
    	color_pars_fragment: color_pars_fragment,
    	color_pars_vertex: color_pars_vertex,
    	color_vertex: color_vertex,
    	common: common,
    	cube_uv_reflection_fragment: cube_uv_reflection_fragment,
    	defaultnormal_vertex: defaultnormal_vertex,
    	displacementmap_pars_vertex: displacementmap_pars_vertex,
    	displacementmap_vertex: displacementmap_vertex,
    	emissivemap_fragment: emissivemap_fragment,
    	emissivemap_pars_fragment: emissivemap_pars_fragment,
    	encodings_fragment: encodings_fragment,
    	encodings_pars_fragment: encodings_pars_fragment,
    	envmap_fragment: envmap_fragment,
    	envmap_common_pars_fragment: envmap_common_pars_fragment,
    	envmap_pars_fragment: envmap_pars_fragment,
    	envmap_pars_vertex: envmap_pars_vertex,
    	envmap_physical_pars_fragment: envmap_physical_pars_fragment,
    	envmap_vertex: envmap_vertex,
    	fog_vertex: fog_vertex,
    	fog_pars_vertex: fog_pars_vertex,
    	fog_fragment: fog_fragment,
    	fog_pars_fragment: fog_pars_fragment,
    	gradientmap_pars_fragment: gradientmap_pars_fragment,
    	lightmap_fragment: lightmap_fragment,
    	lightmap_pars_fragment: lightmap_pars_fragment,
    	lights_lambert_vertex: lights_lambert_vertex,
    	lights_pars_begin: lights_pars_begin,
    	lights_toon_fragment: lights_toon_fragment,
    	lights_toon_pars_fragment: lights_toon_pars_fragment,
    	lights_phong_fragment: lights_phong_fragment,
    	lights_phong_pars_fragment: lights_phong_pars_fragment,
    	lights_physical_fragment: lights_physical_fragment,
    	lights_physical_pars_fragment: lights_physical_pars_fragment,
    	lights_fragment_begin: lights_fragment_begin,
    	lights_fragment_maps: lights_fragment_maps,
    	lights_fragment_end: lights_fragment_end,
    	logdepthbuf_fragment: logdepthbuf_fragment,
    	logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
    	logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
    	logdepthbuf_vertex: logdepthbuf_vertex,
    	map_fragment: map_fragment,
    	map_pars_fragment: map_pars_fragment,
    	map_particle_fragment: map_particle_fragment,
    	map_particle_pars_fragment: map_particle_pars_fragment,
    	metalnessmap_fragment: metalnessmap_fragment,
    	metalnessmap_pars_fragment: metalnessmap_pars_fragment,
    	morphnormal_vertex: morphnormal_vertex,
    	morphtarget_pars_vertex: morphtarget_pars_vertex,
    	morphtarget_vertex: morphtarget_vertex,
    	normal_fragment_begin: normal_fragment_begin,
    	normal_fragment_maps: normal_fragment_maps,
    	normalmap_pars_fragment: normalmap_pars_fragment,
    	clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
    	clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
    	clearcoat_pars_fragment: clearcoat_pars_fragment,
    	packing: packing,
    	premultiplied_alpha_fragment: premultiplied_alpha_fragment,
    	project_vertex: project_vertex,
    	dithering_fragment: dithering_fragment,
    	dithering_pars_fragment: dithering_pars_fragment,
    	roughnessmap_fragment: roughnessmap_fragment,
    	roughnessmap_pars_fragment: roughnessmap_pars_fragment,
    	shadowmap_pars_fragment: shadowmap_pars_fragment,
    	shadowmap_pars_vertex: shadowmap_pars_vertex,
    	shadowmap_vertex: shadowmap_vertex,
    	shadowmask_pars_fragment: shadowmask_pars_fragment,
    	skinbase_vertex: skinbase_vertex,
    	skinning_pars_vertex: skinning_pars_vertex,
    	skinning_vertex: skinning_vertex,
    	skinnormal_vertex: skinnormal_vertex,
    	specularmap_fragment: specularmap_fragment,
    	specularmap_pars_fragment: specularmap_pars_fragment,
    	tonemapping_fragment: tonemapping_fragment,
    	tonemapping_pars_fragment: tonemapping_pars_fragment,
    	transmissionmap_fragment: transmissionmap_fragment,
    	transmissionmap_pars_fragment: transmissionmap_pars_fragment,
    	uv_pars_fragment: uv_pars_fragment,
    	uv_pars_vertex: uv_pars_vertex,
    	uv_vertex: uv_vertex,
    	uv2_pars_fragment: uv2_pars_fragment,
    	uv2_pars_vertex: uv2_pars_vertex,
    	uv2_vertex: uv2_vertex,
    	worldpos_vertex: worldpos_vertex,
    	background_frag: background_frag,
    	background_vert: background_vert,
    	cube_frag: cube_frag,
    	cube_vert: cube_vert,
    	depth_frag: depth_frag,
    	depth_vert: depth_vert,
    	distanceRGBA_frag: distanceRGBA_frag,
    	distanceRGBA_vert: distanceRGBA_vert,
    	equirect_frag: equirect_frag,
    	equirect_vert: equirect_vert,
    	linedashed_frag: linedashed_frag,
    	linedashed_vert: linedashed_vert,
    	meshbasic_frag: meshbasic_frag,
    	meshbasic_vert: meshbasic_vert,
    	meshlambert_frag: meshlambert_frag,
    	meshlambert_vert: meshlambert_vert,
    	meshmatcap_frag: meshmatcap_frag,
    	meshmatcap_vert: meshmatcap_vert,
    	meshtoon_frag: meshtoon_frag,
    	meshtoon_vert: meshtoon_vert,
    	meshphong_frag: meshphong_frag,
    	meshphong_vert: meshphong_vert,
    	meshphysical_frag: meshphysical_frag,
    	meshphysical_vert: meshphysical_vert,
    	normal_frag: normal_frag,
    	normal_vert: normal_vert,
    	points_frag: points_frag,
    	points_vert: points_vert,
    	shadow_frag: shadow_frag,
    	shadow_vert: shadow_vert,
    	sprite_frag: sprite_frag,
    	sprite_vert: sprite_vert
    };
    const UniformsLib = {
    	common: {
    		diffuse: { value: new Color( 0xeeeeee ) },
    		opacity: { value: 1.0 },
    		map: { value: null },
    		uvTransform: { value: new Matrix3() },
    		uv2Transform: { value: new Matrix3() },
    		alphaMap: { value: null },
    	},
    	specularmap: {
    		specularMap: { value: null },
    	},
    	envmap: {
    		envMap: { value: null },
    		flipEnvMap: { value: - 1 },
    		reflectivity: { value: 1.0 },
    		refractionRatio: { value: 0.98 },
    		maxMipLevel: { value: 0 }
    	},
    	aomap: {
    		aoMap: { value: null },
    		aoMapIntensity: { value: 1 }
    	},
    	lightmap: {
    		lightMap: { value: null },
    		lightMapIntensity: { value: 1 }
    	},
    	emissivemap: {
    		emissiveMap: { value: null }
    	},
    	bumpmap: {
    		bumpMap: { value: null },
    		bumpScale: { value: 1 }
    	},
    	normalmap: {
    		normalMap: { value: null },
    		normalScale: { value: new Vector2( 1, 1 ) }
    	},
    	displacementmap: {
    		displacementMap: { value: null },
    		displacementScale: { value: 1 },
    		displacementBias: { value: 0 }
    	},
    	roughnessmap: {
    		roughnessMap: { value: null }
    	},
    	metalnessmap: {
    		metalnessMap: { value: null }
    	},
    	gradientmap: {
    		gradientMap: { value: null }
    	},
    	fog: {
    		fogDensity: { value: 0.00025 },
    		fogNear: { value: 1 },
    		fogFar: { value: 2000 },
    		fogColor: { value: new Color( 0xffffff ) }
    	},
    	lights: {
    		ambientLightColor: { value: [] },
    		lightProbe: { value: [] },
    		directionalLights: { value: [], properties: {
    			direction: {},
    			color: {}
    		} },
    		directionalLightShadows: { value: [], properties: {
    			shadowBias: {},
    			shadowNormalBias: {},
    			shadowRadius: {},
    			shadowMapSize: {}
    		} },
    		directionalShadowMap: { value: [] },
    		directionalShadowMatrix: { value: [] },
    		spotLights: { value: [], properties: {
    			color: {},
    			position: {},
    			direction: {},
    			distance: {},
    			coneCos: {},
    			penumbraCos: {},
    			decay: {}
    		} },
    		spotLightShadows: { value: [], properties: {
    			shadowBias: {},
    			shadowNormalBias: {},
    			shadowRadius: {},
    			shadowMapSize: {}
    		} },
    		spotShadowMap: { value: [] },
    		spotShadowMatrix: { value: [] },
    		pointLights: { value: [], properties: {
    			color: {},
    			position: {},
    			decay: {},
    			distance: {}
    		} },
    		pointLightShadows: { value: [], properties: {
    			shadowBias: {},
    			shadowNormalBias: {},
    			shadowRadius: {},
    			shadowMapSize: {},
    			shadowCameraNear: {},
    			shadowCameraFar: {}
    		} },
    		pointShadowMap: { value: [] },
    		pointShadowMatrix: { value: [] },
    		hemisphereLights: { value: [], properties: {
    			direction: {},
    			skyColor: {},
    			groundColor: {}
    		} },
    		rectAreaLights: { value: [], properties: {
    			color: {},
    			position: {},
    			width: {},
    			height: {}
    		} },
    		ltc_1: { value: null },
    		ltc_2: { value: null }
    	},
    	points: {
    		diffuse: { value: new Color( 0xeeeeee ) },
    		opacity: { value: 1.0 },
    		size: { value: 1.0 },
    		scale: { value: 1.0 },
    		map: { value: null },
    		alphaMap: { value: null },
    		uvTransform: { value: new Matrix3() }
    	},
    	sprite: {
    		diffuse: { value: new Color( 0xeeeeee ) },
    		opacity: { value: 1.0 },
    		center: { value: new Vector2( 0.5, 0.5 ) },
    		rotation: { value: 0.0 },
    		map: { value: null },
    		alphaMap: { value: null },
    		uvTransform: { value: new Matrix3() }
    	}
    };
    const ShaderLib = {
    	basic: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.specularmap,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.fog
    		] ),
    		vertexShader: ShaderChunk.meshbasic_vert,
    		fragmentShader: ShaderChunk.meshbasic_frag
    	},
    	lambert: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.specularmap,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: new Color( 0x000000 ) }
    			}
    		] ),
    		vertexShader: ShaderChunk.meshlambert_vert,
    		fragmentShader: ShaderChunk.meshlambert_frag
    	},
    	phong: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.specularmap,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: new Color( 0x000000 ) },
    				specular: { value: new Color( 0x111111 ) },
    				shininess: { value: 30 }
    			}
    		] ),
    		vertexShader: ShaderChunk.meshphong_vert,
    		fragmentShader: ShaderChunk.meshphong_frag
    	},
    	standard: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.envmap,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.roughnessmap,
    			UniformsLib.metalnessmap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: new Color( 0x000000 ) },
    				roughness: { value: 1.0 },
    				metalness: { value: 0.0 },
    				envMapIntensity: { value: 1 }
    			}
    		] ),
    		vertexShader: ShaderChunk.meshphysical_vert,
    		fragmentShader: ShaderChunk.meshphysical_frag
    	},
    	toon: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.aomap,
    			UniformsLib.lightmap,
    			UniformsLib.emissivemap,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.gradientmap,
    			UniformsLib.fog,
    			UniformsLib.lights,
    			{
    				emissive: { value: new Color( 0x000000 ) }
    			}
    		] ),
    		vertexShader: ShaderChunk.meshtoon_vert,
    		fragmentShader: ShaderChunk.meshtoon_frag
    	},
    	matcap: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			UniformsLib.fog,
    			{
    				matcap: { value: null }
    			}
    		] ),
    		vertexShader: ShaderChunk.meshmatcap_vert,
    		fragmentShader: ShaderChunk.meshmatcap_frag
    	},
    	points: {
    		uniforms: mergeUniforms( [
    			UniformsLib.points,
    			UniformsLib.fog
    		] ),
    		vertexShader: ShaderChunk.points_vert,
    		fragmentShader: ShaderChunk.points_frag
    	},
    	dashed: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.fog,
    			{
    				scale: { value: 1 },
    				dashSize: { value: 1 },
    				totalSize: { value: 2 }
    			}
    		] ),
    		vertexShader: ShaderChunk.linedashed_vert,
    		fragmentShader: ShaderChunk.linedashed_frag
    	},
    	depth: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.displacementmap
    		] ),
    		vertexShader: ShaderChunk.depth_vert,
    		fragmentShader: ShaderChunk.depth_frag
    	},
    	normal: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.bumpmap,
    			UniformsLib.normalmap,
    			UniformsLib.displacementmap,
    			{
    				opacity: { value: 1.0 }
    			}
    		] ),
    		vertexShader: ShaderChunk.normal_vert,
    		fragmentShader: ShaderChunk.normal_frag
    	},
    	sprite: {
    		uniforms: mergeUniforms( [
    			UniformsLib.sprite,
    			UniformsLib.fog
    		] ),
    		vertexShader: ShaderChunk.sprite_vert,
    		fragmentShader: ShaderChunk.sprite_frag
    	},
    	background: {
    		uniforms: {
    			uvTransform: { value: new Matrix3() },
    			t2D: { value: null },
    		},
    		vertexShader: ShaderChunk.background_vert,
    		fragmentShader: ShaderChunk.background_frag
    	},
    	cube: {
    		uniforms: mergeUniforms( [
    			UniformsLib.envmap,
    			{
    				opacity: { value: 1.0 }
    			}
    		] ),
    		vertexShader: ShaderChunk.cube_vert,
    		fragmentShader: ShaderChunk.cube_frag
    	},
    	equirect: {
    		uniforms: {
    			tEquirect: { value: null },
    		},
    		vertexShader: ShaderChunk.equirect_vert,
    		fragmentShader: ShaderChunk.equirect_frag
    	},
    	distanceRGBA: {
    		uniforms: mergeUniforms( [
    			UniformsLib.common,
    			UniformsLib.displacementmap,
    			{
    				referencePosition: { value: new Vector3() },
    				nearDistance: { value: 1 },
    				farDistance: { value: 1000 }
    			}
    		] ),
    		vertexShader: ShaderChunk.distanceRGBA_vert,
    		fragmentShader: ShaderChunk.distanceRGBA_frag
    	},
    	shadow: {
    		uniforms: mergeUniforms( [
    			UniformsLib.lights,
    			UniformsLib.fog,
    			{
    				color: { value: new Color( 0x00000 ) },
    				opacity: { value: 1.0 }
    			},
    		] ),
    		vertexShader: ShaderChunk.shadow_vert,
    		fragmentShader: ShaderChunk.shadow_frag
    	}
    };
    ShaderLib.physical = {
    	uniforms: mergeUniforms( [
    		ShaderLib.standard.uniforms,
    		{
    			clearcoat: { value: 0 },
    			clearcoatMap: { value: null },
    			clearcoatRoughness: { value: 0 },
    			clearcoatRoughnessMap: { value: null },
    			clearcoatNormalScale: { value: new Vector2( 1, 1 ) },
    			clearcoatNormalMap: { value: null },
    			sheen: { value: new Color( 0x000000 ) },
    			transmission: { value: 0 },
    			transmissionMap: { value: null },
    		}
    	] ),
    	vertexShader: ShaderChunk.meshphysical_vert,
    	fragmentShader: ShaderChunk.meshphysical_frag
    };
    function WebGLBackground( renderer, cubemaps, state, objects, premultipliedAlpha ) {
    	const clearColor = new Color( 0x000000 );
    	let clearAlpha = 0;
    	let planeMesh;
    	let boxMesh;
    	let currentBackground = null;
    	let currentBackgroundVersion = 0;
    	let currentTonemapping = null;
    	function render( renderList, scene, camera, forceClear ) {
    		let background = scene.isScene === true ? scene.background : null;
    		if ( background && background.isTexture ) {
    			background = cubemaps.get( background );
    		}
    		const xr = renderer.xr;
    		const session = xr.getSession && xr.getSession();
    		if ( session && session.environmentBlendMode === 'additive' ) {
    			background = null;
    		}
    		if ( background === null ) {
    			setClear( clearColor, clearAlpha );
    		} else if ( background && background.isColor ) {
    			setClear( background, 1 );
    			forceClear = true;
    		}
    		if ( renderer.autoClear || forceClear ) {
    			renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );
    		}
    		if ( background && ( background.isCubeTexture || background.isWebGLCubeRenderTarget || background.isWebGLCubeRenderTargetTexture || background.mapping === CubeUVReflectionMapping ) ) {
    			if ( boxMesh === undefined ) {
    				boxMesh = new Mesh(
    					new BoxBufferGeometry( 1, 1, 1 ),
    					new ShaderMaterial( {
    						name: 'BackgroundCubeMaterial',
    						uniforms: cloneUniforms( ShaderLib.cube.uniforms ),
    						vertexShader: ShaderLib.cube.vertexShader,
    						fragmentShader: ShaderLib.cube.fragmentShader,
    						side: BackSide,
    						depthTest: false,
    						depthWrite: false,
    						fog: false
    					} )
    				);
    				boxMesh.geometry.deleteAttribute( 'normal' );
    				boxMesh.geometry.deleteAttribute( 'uv' );
    				boxMesh.onBeforeRender = function ( renderer, scene, camera ) {
    					this.matrixWorld.copyPosition( camera.matrixWorld );
    				};
    				Object.defineProperty( boxMesh.material, 'envMap', {
    					get: function () {
    						return this.uniforms.envMap.value;
    					}
    				} );
    				objects.update( boxMesh );
    			}
    			if ( background.isWebGLCubeRenderTarget ) {
    				background = background.texture;
    			}
    			boxMesh.material.uniforms.envMap.value = background;
    			boxMesh.material.uniforms.flipEnvMap.value = background.isCubeTexture ? - 1 : 1;
    			if ( currentBackground !== background ||
    				currentBackgroundVersion !== background.version ||
    				currentTonemapping !== renderer.toneMapping ) {
    				boxMesh.material.needsUpdate = true;
    				currentBackground = background;
    				currentBackgroundVersion = background.version;
    				currentTonemapping = renderer.toneMapping;
    			}
    			renderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );
    		} else if ( background && background.isTexture ) {
    			if ( planeMesh === undefined ) {
    				planeMesh = new Mesh(
    					new PlaneBufferGeometry( 2, 2 ),
    					new ShaderMaterial( {
    						name: 'BackgroundMaterial',
    						uniforms: cloneUniforms( ShaderLib.background.uniforms ),
    						vertexShader: ShaderLib.background.vertexShader,
    						fragmentShader: ShaderLib.background.fragmentShader,
    						side: FrontSide,
    						depthTest: false,
    						depthWrite: false,
    						fog: false
    					} )
    				);
    				planeMesh.geometry.deleteAttribute( 'normal' );
    				Object.defineProperty( planeMesh.material, 'map', {
    					get: function () {
    						return this.uniforms.t2D.value;
    					}
    				} );
    				objects.update( planeMesh );
    			}
    			planeMesh.material.uniforms.t2D.value = background;
    			if ( background.matrixAutoUpdate === true ) {
    				background.updateMatrix();
    			}
    			planeMesh.material.uniforms.uvTransform.value.copy( background.matrix );
    			if ( currentBackground !== background ||
    				currentBackgroundVersion !== background.version ||
    				currentTonemapping !== renderer.toneMapping ) {
    				planeMesh.material.needsUpdate = true;
    				currentBackground = background;
    				currentBackgroundVersion = background.version;
    				currentTonemapping = renderer.toneMapping;
    			}
    			renderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );
    		}
    	}
    	function setClear( color, alpha ) {
    		state.buffers.color.setClear( color.r, color.g, color.b, alpha, premultipliedAlpha );
    	}
    	return {
    		getClearColor: function () {
    			return clearColor;
    		},
    		setClearColor: function ( color, alpha ) {
    			clearColor.set( color );
    			clearAlpha = alpha !== undefined ? alpha : 1;
    			setClear( clearColor, clearAlpha );
    		},
    		getClearAlpha: function () {
    			return clearAlpha;
    		},
    		setClearAlpha: function ( alpha ) {
    			clearAlpha = alpha;
    			setClear( clearColor, clearAlpha );
    		},
    		render: render
    	};
    }
    function WebGLBindingStates( gl, extensions, attributes, capabilities ) {
    	const maxVertexAttributes = gl.getParameter( 34921 );
    	const extension = capabilities.isWebGL2 ? null : extensions.get( 'OES_vertex_array_object' );
    	const vaoAvailable = capabilities.isWebGL2 || extension !== null;
    	const bindingStates = {};
    	const defaultState = createBindingState( null );
    	let currentState = defaultState;
    	function setup( object, material, program, geometry, index ) {
    		let updateBuffers = false;
    		if ( vaoAvailable ) {
    			const state = getBindingState( geometry, program, material );
    			if ( currentState !== state ) {
    				currentState = state;
    				bindVertexArrayObject( currentState.object );
    			}
    			updateBuffers = needsUpdate( geometry, index );
    			if ( updateBuffers ) saveCache( geometry, index );
    		} else {
    			const wireframe = ( material.wireframe === true );
    			if ( currentState.geometry !== geometry.id ||
    				currentState.program !== program.id ||
    				currentState.wireframe !== wireframe ) {
    				currentState.geometry = geometry.id;
    				currentState.program = program.id;
    				currentState.wireframe = wireframe;
    				updateBuffers = true;
    			}
    		}
    		if ( object.isInstancedMesh === true ) {
    			updateBuffers = true;
    		}
    		if ( index !== null ) {
    			attributes.update( index, 34963 );
    		}
    		if ( updateBuffers ) {
    			setupVertexAttributes( object, material, program, geometry );
    			if ( index !== null ) {
    				gl.bindBuffer( 34963, attributes.get( index ).buffer );
    			}
    		}
    	}
    	function createVertexArrayObject() {
    		if ( capabilities.isWebGL2 ) return gl.createVertexArray();
    		return extension.createVertexArrayOES();
    	}
    	function bindVertexArrayObject( vao ) {
    		if ( capabilities.isWebGL2 ) return gl.bindVertexArray( vao );
    		return extension.bindVertexArrayOES( vao );
    	}
    	function deleteVertexArrayObject( vao ) {
    		if ( capabilities.isWebGL2 ) return gl.deleteVertexArray( vao );
    		return extension.deleteVertexArrayOES( vao );
    	}
    	function getBindingState( geometry, program, material ) {
    		const wireframe = ( material.wireframe === true );
    		let programMap = bindingStates[ geometry.id ];
    		if ( programMap === undefined ) {
    			programMap = {};
    			bindingStates[ geometry.id ] = programMap;
    		}
    		let stateMap = programMap[ program.id ];
    		if ( stateMap === undefined ) {
    			stateMap = {};
    			programMap[ program.id ] = stateMap;
    		}
    		let state = stateMap[ wireframe ];
    		if ( state === undefined ) {
    			state = createBindingState( createVertexArrayObject() );
    			stateMap[ wireframe ] = state;
    		}
    		return state;
    	}
    	function createBindingState( vao ) {
    		const newAttributes = [];
    		const enabledAttributes = [];
    		const attributeDivisors = [];
    		for ( let i = 0; i < maxVertexAttributes; i ++ ) {
    			newAttributes[ i ] = 0;
    			enabledAttributes[ i ] = 0;
    			attributeDivisors[ i ] = 0;
    		}
    		return {
    			geometry: null,
    			program: null,
    			wireframe: false,
    			newAttributes: newAttributes,
    			enabledAttributes: enabledAttributes,
    			attributeDivisors: attributeDivisors,
    			object: vao,
    			attributes: {},
    			index: null
    		};
    	}
    	function needsUpdate( geometry, index ) {
    		const cachedAttributes = currentState.attributes;
    		const geometryAttributes = geometry.attributes;
    		if ( Object.keys( cachedAttributes ).length !== Object.keys( geometryAttributes ).length ) return true;
    		for ( const key in geometryAttributes ) {
    			const cachedAttribute = cachedAttributes[ key ];
    			const geometryAttribute = geometryAttributes[ key ];
    			if ( cachedAttribute === undefined ) return true;
    			if ( cachedAttribute.attribute !== geometryAttribute ) return true;
    			if ( cachedAttribute.data !== geometryAttribute.data ) return true;
    		}
    		if ( currentState.index !== index ) return true;
    		return false;
    	}
    	function saveCache( geometry, index ) {
    		const cache = {};
    		const attributes = geometry.attributes;
    		for ( const key in attributes ) {
    			const attribute = attributes[ key ];
    			const data = {};
    			data.attribute = attribute;
    			if ( attribute.data ) {
    				data.data = attribute.data;
    			}
    			cache[ key ] = data;
    		}
    		currentState.attributes = cache;
    		currentState.index = index;
    	}
    	function initAttributes() {
    		const newAttributes = currentState.newAttributes;
    		for ( let i = 0, il = newAttributes.length; i < il; i ++ ) {
    			newAttributes[ i ] = 0;
    		}
    	}
    	function enableAttribute( attribute ) {
    		enableAttributeAndDivisor( attribute, 0 );
    	}
    	function enableAttributeAndDivisor( attribute, meshPerAttribute ) {
    		const newAttributes = currentState.newAttributes;
    		const enabledAttributes = currentState.enabledAttributes;
    		const attributeDivisors = currentState.attributeDivisors;
    		newAttributes[ attribute ] = 1;
    		if ( enabledAttributes[ attribute ] === 0 ) {
    			gl.enableVertexAttribArray( attribute );
    			enabledAttributes[ attribute ] = 1;
    		}
    		if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {
    			const extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );
    			extension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );
    			attributeDivisors[ attribute ] = meshPerAttribute;
    		}
    	}
    	function disableUnusedAttributes() {
    		const newAttributes = currentState.newAttributes;
    		const enabledAttributes = currentState.enabledAttributes;
    		for ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {
    			if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {
    				gl.disableVertexAttribArray( i );
    				enabledAttributes[ i ] = 0;
    			}
    		}
    	}
    	function vertexAttribPointer( index, size, type, normalized, stride, offset ) {
    		if ( capabilities.isWebGL2 === true && ( type === 5124 || type === 5125 ) ) {
    			gl.vertexAttribIPointer( index, size, type, stride, offset );
    		} else {
    			gl.vertexAttribPointer( index, size, type, normalized, stride, offset );
    		}
    	}
    	function setupVertexAttributes( object, material, program, geometry ) {
    		if ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {
    			if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;
    		}
    		initAttributes();
    		const geometryAttributes = geometry.attributes;
    		const programAttributes = program.getAttributes();
    		const materialDefaultAttributeValues = material.defaultAttributeValues;
    		for ( const name in programAttributes ) {
    			const programAttribute = programAttributes[ name ];
    			if ( programAttribute >= 0 ) {
    				const geometryAttribute = geometryAttributes[ name ];
    				if ( geometryAttribute !== undefined ) {
    					const normalized = geometryAttribute.normalized;
    					const size = geometryAttribute.itemSize;
    					const attribute = attributes.get( geometryAttribute );
    					if ( attribute === undefined ) continue;
    					const buffer = attribute.buffer;
    					const type = attribute.type;
    					const bytesPerElement = attribute.bytesPerElement;
    					if ( geometryAttribute.isInterleavedBufferAttribute ) {
    						const data = geometryAttribute.data;
    						const stride = data.stride;
    						const offset = geometryAttribute.offset;
    						if ( data && data.isInstancedInterleavedBuffer ) {
    							enableAttributeAndDivisor( programAttribute, data.meshPerAttribute );
    							if ( geometry._maxInstanceCount === undefined ) {
    								geometry._maxInstanceCount = data.meshPerAttribute * data.count;
    							}
    						} else {
    							enableAttribute( programAttribute );
    						}
    						gl.bindBuffer( 34962, buffer );
    						vertexAttribPointer( programAttribute, size, type, normalized, stride * bytesPerElement, offset * bytesPerElement );
    					} else {
    						if ( geometryAttribute.isInstancedBufferAttribute ) {
    							enableAttributeAndDivisor( programAttribute, geometryAttribute.meshPerAttribute );
    							if ( geometry._maxInstanceCount === undefined ) {
    								geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
    							}
    						} else {
    							enableAttribute( programAttribute );
    						}
    						gl.bindBuffer( 34962, buffer );
    						vertexAttribPointer( programAttribute, size, type, normalized, 0, 0 );
    					}
    				} else if ( name === 'instanceMatrix' ) {
    					const attribute = attributes.get( object.instanceMatrix );
    					if ( attribute === undefined ) continue;
    					const buffer = attribute.buffer;
    					const type = attribute.type;
    					enableAttributeAndDivisor( programAttribute + 0, 1 );
    					enableAttributeAndDivisor( programAttribute + 1, 1 );
    					enableAttributeAndDivisor( programAttribute + 2, 1 );
    					enableAttributeAndDivisor( programAttribute + 3, 1 );
    					gl.bindBuffer( 34962, buffer );
    					gl.vertexAttribPointer( programAttribute + 0, 4, type, false, 64, 0 );
    					gl.vertexAttribPointer( programAttribute + 1, 4, type, false, 64, 16 );
    					gl.vertexAttribPointer( programAttribute + 2, 4, type, false, 64, 32 );
    					gl.vertexAttribPointer( programAttribute + 3, 4, type, false, 64, 48 );
    				} else if ( name === 'instanceColor' ) {
    					const attribute = attributes.get( object.instanceColor );
    					if ( attribute === undefined ) continue;
    					const buffer = attribute.buffer;
    					const type = attribute.type;
    					enableAttributeAndDivisor( programAttribute, 1 );
    					gl.bindBuffer( 34962, buffer );
    					gl.vertexAttribPointer( programAttribute, 3, type, false, 12, 0 );
    				} else if ( materialDefaultAttributeValues !== undefined ) {
    					const value = materialDefaultAttributeValues[ name ];
    					if ( value !== undefined ) {
    						switch ( value.length ) {
    							case 2:
    								gl.vertexAttrib2fv( programAttribute, value );
    								break;
    							case 3:
    								gl.vertexAttrib3fv( programAttribute, value );
    								break;
    							case 4:
    								gl.vertexAttrib4fv( programAttribute, value );
    								break;
    							default:
    								gl.vertexAttrib1fv( programAttribute, value );
    						}
    					}
    				}
    			}
    		}
    		disableUnusedAttributes();
    	}
    	function dispose() {
    		reset();
    		for ( const geometryId in bindingStates ) {
    			const programMap = bindingStates[ geometryId ];
    			for ( const programId in programMap ) {
    				const stateMap = programMap[ programId ];
    				for ( const wireframe in stateMap ) {
    					deleteVertexArrayObject( stateMap[ wireframe ].object );
    					delete stateMap[ wireframe ];
    				}
    				delete programMap[ programId ];
    			}
    			delete bindingStates[ geometryId ];
    		}
    	}
    	function releaseStatesOfGeometry( geometry ) {
    		if ( bindingStates[ geometry.id ] === undefined ) return;
    		const programMap = bindingStates[ geometry.id ];
    		for ( const programId in programMap ) {
    			const stateMap = programMap[ programId ];
    			for ( const wireframe in stateMap ) {
    				deleteVertexArrayObject( stateMap[ wireframe ].object );
    				delete stateMap[ wireframe ];
    			}
    			delete programMap[ programId ];
    		}
    		delete bindingStates[ geometry.id ];
    	}
    	function releaseStatesOfProgram( program ) {
    		for ( const geometryId in bindingStates ) {
    			const programMap = bindingStates[ geometryId ];
    			if ( programMap[ program.id ] === undefined ) continue;
    			const stateMap = programMap[ program.id ];
    			for ( const wireframe in stateMap ) {
    				deleteVertexArrayObject( stateMap[ wireframe ].object );
    				delete stateMap[ wireframe ];
    			}
    			delete programMap[ program.id ];
    		}
    	}
    	function reset() {
    		resetDefaultState();
    		if ( currentState === defaultState ) return;
    		currentState = defaultState;
    		bindVertexArrayObject( currentState.object );
    	}
    	function resetDefaultState() {
    		defaultState.geometry = null;
    		defaultState.program = null;
    		defaultState.wireframe = false;
    	}
    	return {
    		setup: setup,
    		reset: reset,
    		resetDefaultState: resetDefaultState,
    		dispose: dispose,
    		releaseStatesOfGeometry: releaseStatesOfGeometry,
    		releaseStatesOfProgram: releaseStatesOfProgram,
    		initAttributes: initAttributes,
    		enableAttribute: enableAttribute,
    		disableUnusedAttributes: disableUnusedAttributes
    	};
    }
    function WebGLBufferRenderer( gl, extensions, info, capabilities ) {
    	const isWebGL2 = capabilities.isWebGL2;
    	let mode;
    	function setMode( value ) {
    		mode = value;
    	}
    	function render( start, count ) {
    		gl.drawArrays( mode, start, count );
    		info.update( count, mode, 1 );
    	}
    	function renderInstances( start, count, primcount ) {
    		if ( primcount === 0 ) return;
    		let extension, methodName;
    		if ( isWebGL2 ) {
    			extension = gl;
    			methodName = 'drawArraysInstanced';
    		} else {
    			extension = extensions.get( 'ANGLE_instanced_arrays' );
    			methodName = 'drawArraysInstancedANGLE';
    			if ( extension === null ) {
    				console.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
    				return;
    			}
    		}
    		extension[ methodName ]( mode, start, count, primcount );
    		info.update( count, mode, primcount );
    	}
    	this.setMode = setMode;
    	this.render = render;
    	this.renderInstances = renderInstances;
    }
    function WebGLCapabilities( gl, extensions, parameters ) {
    	let maxAnisotropy;
    	function getMaxAnisotropy() {
    		if ( maxAnisotropy !== undefined ) return maxAnisotropy;
    		const extension = extensions.get( 'EXT_texture_filter_anisotropic' );
    		if ( extension !== null ) {
    			maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );
    		} else {
    			maxAnisotropy = 0;
    		}
    		return maxAnisotropy;
    	}
    	function getMaxPrecision( precision ) {
    		if ( precision === 'highp' ) {
    			if ( gl.getShaderPrecisionFormat( 35633, 36338 ).precision > 0 &&
    				gl.getShaderPrecisionFormat( 35632, 36338 ).precision > 0 ) {
    				return 'highp';
    			}
    			precision = 'mediump';
    		}
    		if ( precision === 'mediump' ) {
    			if ( gl.getShaderPrecisionFormat( 35633, 36337 ).precision > 0 &&
    				gl.getShaderPrecisionFormat( 35632, 36337 ).precision > 0 ) {
    				return 'mediump';
    			}
    		}
    		return 'lowp';
    	}
    	const isWebGL2 = ( typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext ) ||
    		( typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext );
    	let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
    	const maxPrecision = getMaxPrecision( precision );
    	if ( maxPrecision !== precision ) {
    		console.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );
    		precision = maxPrecision;
    	}
    	const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
    	const maxTextures = gl.getParameter( 34930 );
    	const maxVertexTextures = gl.getParameter( 35660 );
    	const maxTextureSize = gl.getParameter( 3379 );
    	const maxCubemapSize = gl.getParameter( 34076 );
    	const maxAttributes = gl.getParameter( 34921 );
    	const maxVertexUniforms = gl.getParameter( 36347 );
    	const maxVaryings = gl.getParameter( 36348 );
    	const maxFragmentUniforms = gl.getParameter( 36349 );
    	const vertexTextures = maxVertexTextures > 0;
    	const floatFragmentTextures = isWebGL2 || !! extensions.get( 'OES_texture_float' );
    	const floatVertexTextures = vertexTextures && floatFragmentTextures;
    	const maxSamples = isWebGL2 ? gl.getParameter( 36183 ) : 0;
    	return {
    		isWebGL2: isWebGL2,
    		getMaxAnisotropy: getMaxAnisotropy,
    		getMaxPrecision: getMaxPrecision,
    		precision: precision,
    		logarithmicDepthBuffer: logarithmicDepthBuffer,
    		maxTextures: maxTextures,
    		maxVertexTextures: maxVertexTextures,
    		maxTextureSize: maxTextureSize,
    		maxCubemapSize: maxCubemapSize,
    		maxAttributes: maxAttributes,
    		maxVertexUniforms: maxVertexUniforms,
    		maxVaryings: maxVaryings,
    		maxFragmentUniforms: maxFragmentUniforms,
    		vertexTextures: vertexTextures,
    		floatFragmentTextures: floatFragmentTextures,
    		floatVertexTextures: floatVertexTextures,
    		maxSamples: maxSamples
    	};
    }
    function WebGLClipping( properties ) {
    	const scope = this;
    	let globalState = null,
    		numGlobalPlanes = 0,
    		localClippingEnabled = false,
    		renderingShadows = false;
    	const plane = new Plane(),
    		viewNormalMatrix = new Matrix3(),
    		uniform = { value: null, needsUpdate: false };
    	this.uniform = uniform;
    	this.numPlanes = 0;
    	this.numIntersection = 0;
    	this.init = function ( planes, enableLocalClipping, camera ) {
    		const enabled =
    			planes.length !== 0 ||
    			enableLocalClipping ||
    			numGlobalPlanes !== 0 ||
    			localClippingEnabled;
    		localClippingEnabled = enableLocalClipping;
    		globalState = projectPlanes( planes, camera, 0 );
    		numGlobalPlanes = planes.length;
    		return enabled;
    	};
    	this.beginShadows = function () {
    		renderingShadows = true;
    		projectPlanes( null );
    	};
    	this.endShadows = function () {
    		renderingShadows = false;
    		resetGlobalState();
    	};
    	this.setState = function ( material, camera, useCache ) {
    		const planes = material.clippingPlanes,
    			clipIntersection = material.clipIntersection,
    			clipShadows = material.clipShadows;
    		const materialProperties = properties.get( material );
    		if ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {
    			if ( renderingShadows ) {
    				projectPlanes( null );
    			} else {
    				resetGlobalState();
    			}
    		} else {
    			const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
    				lGlobal = nGlobal * 4;
    			let dstArray = materialProperties.clippingState || null;
    			uniform.value = dstArray;
    			dstArray = projectPlanes( planes, camera, lGlobal, useCache );
    			for ( let i = 0; i !== lGlobal; ++ i ) {
    				dstArray[ i ] = globalState[ i ];
    			}
    			materialProperties.clippingState = dstArray;
    			this.numIntersection = clipIntersection ? this.numPlanes : 0;
    			this.numPlanes += nGlobal;
    		}
    	};
    	function resetGlobalState() {
    		if ( uniform.value !== globalState ) {
    			uniform.value = globalState;
    			uniform.needsUpdate = numGlobalPlanes > 0;
    		}
    		scope.numPlanes = numGlobalPlanes;
    		scope.numIntersection = 0;
    	}
    	function projectPlanes( planes, camera, dstOffset, skipTransform ) {
    		const nPlanes = planes !== null ? planes.length : 0;
    		let dstArray = null;
    		if ( nPlanes !== 0 ) {
    			dstArray = uniform.value;
    			if ( skipTransform !== true || dstArray === null ) {
    				const flatSize = dstOffset + nPlanes * 4,
    					viewMatrix = camera.matrixWorldInverse;
    				viewNormalMatrix.getNormalMatrix( viewMatrix );
    				if ( dstArray === null || dstArray.length < flatSize ) {
    					dstArray = new Float32Array( flatSize );
    				}
    				for ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {
    					plane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );
    					plane.normal.toArray( dstArray, i4 );
    					dstArray[ i4 + 3 ] = plane.constant;
    				}
    			}
    			uniform.value = dstArray;
    			uniform.needsUpdate = true;
    		}
    		scope.numPlanes = nPlanes;
    		scope.numIntersection = 0;
    		return dstArray;
    	}
    }
    function WebGLCubeMaps( renderer ) {
    	let cubemaps = new WeakMap();
    	function mapTextureMapping( texture, mapping ) {
    		if ( mapping === EquirectangularReflectionMapping ) {
    			texture.mapping = CubeReflectionMapping;
    		} else if ( mapping === EquirectangularRefractionMapping ) {
    			texture.mapping = CubeRefractionMapping;
    		}
    		return texture;
    	}
    	function get( texture ) {
    		if ( texture && texture.isTexture ) {
    			const mapping = texture.mapping;
    			if ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {
    				if ( cubemaps.has( texture ) ) {
    					const cubemap = cubemaps.get( texture ).texture;
    					return mapTextureMapping( cubemap, texture.mapping );
    				} else {
    					const image = texture.image;
    					if ( image && image.height > 0 ) {
    						const currentRenderList = renderer.getRenderList();
    						const currentRenderTarget = renderer.getRenderTarget();
    						const currentRenderState = renderer.getRenderState();
    						const renderTarget = new WebGLCubeRenderTarget( image.height / 2 );
    						renderTarget.fromEquirectangularTexture( renderer, texture );
    						cubemaps.set( texture, renderTarget );
    						renderer.setRenderTarget( currentRenderTarget );
    						renderer.setRenderList( currentRenderList );
    						renderer.setRenderState( currentRenderState );
    						return mapTextureMapping( renderTarget.texture, texture.mapping );
    					} else {
    						return null;
    					}
    				}
    			}
    		}
    		return texture;
    	}
    	function dispose() {
    		cubemaps = new WeakMap();
    	}
    	return {
    		get: get,
    		dispose: dispose
    	};
    }
    function WebGLExtensions( gl ) {
    	const extensions = {};
    	return {
    		has: function ( name ) {
    			if ( extensions[ name ] !== undefined ) {
    				return extensions[ name ] !== null;
    			}
    			let extension;
    			switch ( name ) {
    				case 'WEBGL_depth_texture':
    					extension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );
    					break;
    				case 'EXT_texture_filter_anisotropic':
    					extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
    					break;
    				case 'WEBGL_compressed_texture_s3tc':
    					extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
    					break;
    				case 'WEBGL_compressed_texture_pvrtc':
    					extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
    					break;
    				default:
    					extension = gl.getExtension( name );
    			}
    			extensions[ name ] = extension;
    			return extension !== null;
    		},
    		get: function ( name ) {
    			if ( ! this.has( name ) ) {
    				console.warn( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );
    			}
    			return extensions[ name ];
    		}
    	};
    }
    function WebGLGeometries( gl, attributes, info, bindingStates ) {
    	const geometries = new WeakMap();
    	const wireframeAttributes = new WeakMap();
    	function onGeometryDispose( event ) {
    		const geometry = event.target;
    		const buffergeometry = geometries.get( geometry );
    		if ( buffergeometry.index !== null ) {
    			attributes.remove( buffergeometry.index );
    		}
    		for ( const name in buffergeometry.attributes ) {
    			attributes.remove( buffergeometry.attributes[ name ] );
    		}
    		geometry.removeEventListener( 'dispose', onGeometryDispose );
    		geometries.delete( geometry );
    		const attribute = wireframeAttributes.get( buffergeometry );
    		if ( attribute ) {
    			attributes.remove( attribute );
    			wireframeAttributes.delete( buffergeometry );
    		}
    		bindingStates.releaseStatesOfGeometry( geometry );
    		if ( geometry.isInstancedBufferGeometry === true ) {
    			delete geometry._maxInstanceCount;
    		}
    		info.memory.geometries --;
    	}
    	function get( object, geometry ) {
    		let buffergeometry = geometries.get( geometry );
    		if ( buffergeometry ) return buffergeometry;
    		geometry.addEventListener( 'dispose', onGeometryDispose );
    		if ( geometry.isBufferGeometry ) {
    			buffergeometry = geometry;
    		} else if ( geometry.isGeometry ) {
    			if ( geometry._bufferGeometry === undefined ) {
    				geometry._bufferGeometry = new BufferGeometry().setFromObject( object );
    			}
    			buffergeometry = geometry._bufferGeometry;
    		}
    		geometries.set( geometry, buffergeometry );
    		info.memory.geometries ++;
    		return buffergeometry;
    	}
    	function update( geometry ) {
    		const geometryAttributes = geometry.attributes;
    		for ( const name in geometryAttributes ) {
    			attributes.update( geometryAttributes[ name ], 34962 );
    		}
    		const morphAttributes = geometry.morphAttributes;
    		for ( const name in morphAttributes ) {
    			const array = morphAttributes[ name ];
    			for ( let i = 0, l = array.length; i < l; i ++ ) {
    				attributes.update( array[ i ], 34962 );
    			}
    		}
    	}
    	function updateWireframeAttribute( geometry ) {
    		const indices = [];
    		const geometryIndex = geometry.index;
    		const geometryPosition = geometry.attributes.position;
    		let version = 0;
    		if ( geometryIndex !== null ) {
    			const array = geometryIndex.array;
    			version = geometryIndex.version;
    			for ( let i = 0, l = array.length; i < l; i += 3 ) {
    				const a = array[ i + 0 ];
    				const b = array[ i + 1 ];
    				const c = array[ i + 2 ];
    				indices.push( a, b, b, c, c, a );
    			}
    		} else {
    			const array = geometryPosition.array;
    			version = geometryPosition.version;
    			for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {
    				const a = i + 0;
    				const b = i + 1;
    				const c = i + 2;
    				indices.push( a, b, b, c, c, a );
    			}
    		}
    		const attribute = new ( arrayMax( indices ) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
    		attribute.version = version;
    		const previousAttribute = wireframeAttributes.get( geometry );
    		if ( previousAttribute ) attributes.remove( previousAttribute );
    		wireframeAttributes.set( geometry, attribute );
    	}
    	function getWireframeAttribute( geometry ) {
    		const currentAttribute = wireframeAttributes.get( geometry );
    		if ( currentAttribute ) {
    			const geometryIndex = geometry.index;
    			if ( geometryIndex !== null ) {
    				if ( currentAttribute.version < geometryIndex.version ) {
    					updateWireframeAttribute( geometry );
    				}
    			}
    		} else {
    			updateWireframeAttribute( geometry );
    		}
    		return wireframeAttributes.get( geometry );
    	}
    	return {
    		get: get,
    		update: update,
    		getWireframeAttribute: getWireframeAttribute
    	};
    }
    function WebGLIndexedBufferRenderer( gl, extensions, info, capabilities ) {
    	const isWebGL2 = capabilities.isWebGL2;
    	let mode;
    	function setMode( value ) {
    		mode = value;
    	}
    	let type, bytesPerElement;
    	function setIndex( value ) {
    		type = value.type;
    		bytesPerElement = value.bytesPerElement;
    	}
    	function render( start, count ) {
    		gl.drawElements( mode, count, type, start * bytesPerElement );
    		info.update( count, mode, 1 );
    	}
    	function renderInstances( start, count, primcount ) {
    		if ( primcount === 0 ) return;
    		let extension, methodName;
    		if ( isWebGL2 ) {
    			extension = gl;
    			methodName = 'drawElementsInstanced';
    		} else {
    			extension = extensions.get( 'ANGLE_instanced_arrays' );
    			methodName = 'drawElementsInstancedANGLE';
    			if ( extension === null ) {
    				console.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
    				return;
    			}
    		}
    		extension[ methodName ]( mode, count, type, start * bytesPerElement, primcount );
    		info.update( count, mode, primcount );
    	}
    	this.setMode = setMode;
    	this.setIndex = setIndex;
    	this.render = render;
    	this.renderInstances = renderInstances;
    }
    function WebGLInfo( gl ) {
    	const memory = {
    		geometries: 0,
    		textures: 0
    	};
    	const render = {
    		frame: 0,
    		calls: 0,
    		triangles: 0,
    		points: 0,
    		lines: 0
    	};
    	function update( count, mode, instanceCount ) {
    		render.calls ++;
    		switch ( mode ) {
    			case 4:
    				render.triangles += instanceCount * ( count / 3 );
    				break;
    			case 1:
    				render.lines += instanceCount * ( count / 2 );
    				break;
    			case 3:
    				render.lines += instanceCount * ( count - 1 );
    				break;
    			case 2:
    				render.lines += instanceCount * count;
    				break;
    			case 0:
    				render.points += instanceCount * count;
    				break;
    			default:
    				console.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );
    				break;
    		}
    	}
    	function reset() {
    		render.frame ++;
    		render.calls = 0;
    		render.triangles = 0;
    		render.points = 0;
    		render.lines = 0;
    	}
    	return {
    		memory: memory,
    		render: render,
    		programs: null,
    		autoReset: true,
    		reset: reset,
    		update: update
    	};
    }
    function numericalSort( a, b ) {
    	return a[ 0 ] - b[ 0 ];
    }
    function absNumericalSort( a, b ) {
    	return Math.abs( b[ 1 ] ) - Math.abs( a[ 1 ] );
    }
    function WebGLMorphtargets( gl ) {
    	const influencesList = {};
    	const morphInfluences = new Float32Array( 8 );
    	const workInfluences = [];
    	for ( let i = 0; i < 8; i ++ ) {
    		workInfluences[ i ] = [ i, 0 ];
    	}
    	function update( object, geometry, material, program ) {
    		const objectInfluences = object.morphTargetInfluences;
    		const length = objectInfluences === undefined ? 0 : objectInfluences.length;
    		let influences = influencesList[ geometry.id ];
    		if ( influences === undefined ) {
    			influences = [];
    			for ( let i = 0; i < length; i ++ ) {
    				influences[ i ] = [ i, 0 ];
    			}
    			influencesList[ geometry.id ] = influences;
    		}
    		for ( let i = 0; i < length; i ++ ) {
    			const influence = influences[ i ];
    			influence[ 0 ] = i;
    			influence[ 1 ] = objectInfluences[ i ];
    		}
    		influences.sort( absNumericalSort );
    		for ( let i = 0; i < 8; i ++ ) {
    			if ( i < length && influences[ i ][ 1 ] ) {
    				workInfluences[ i ][ 0 ] = influences[ i ][ 0 ];
    				workInfluences[ i ][ 1 ] = influences[ i ][ 1 ];
    			} else {
    				workInfluences[ i ][ 0 ] = Number.MAX_SAFE_INTEGER;
    				workInfluences[ i ][ 1 ] = 0;
    			}
    		}
    		workInfluences.sort( numericalSort );
    		const morphTargets = material.morphTargets && geometry.morphAttributes.position;
    		const morphNormals = material.morphNormals && geometry.morphAttributes.normal;
    		let morphInfluencesSum = 0;
    		for ( let i = 0; i < 8; i ++ ) {
    			const influence = workInfluences[ i ];
    			const index = influence[ 0 ];
    			const value = influence[ 1 ];
    			if ( index !== Number.MAX_SAFE_INTEGER && value ) {
    				if ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== morphTargets[ index ] ) {
    					geometry.setAttribute( 'morphTarget' + i, morphTargets[ index ] );
    				}
    				if ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== morphNormals[ index ] ) {
    					geometry.setAttribute( 'morphNormal' + i, morphNormals[ index ] );
    				}
    				morphInfluences[ i ] = value;
    				morphInfluencesSum += value;
    			} else {
    				if ( morphTargets && geometry.getAttribute( 'morphTarget' + i ) !== undefined ) {
    					geometry.deleteAttribute( 'morphTarget' + i );
    				}
    				if ( morphNormals && geometry.getAttribute( 'morphNormal' + i ) !== undefined ) {
    					geometry.deleteAttribute( 'morphNormal' + i );
    				}
    				morphInfluences[ i ] = 0;
    			}
    		}
    		const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
    		program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
    		program.getUniforms().setValue( gl, 'morphTargetInfluences', morphInfluences );
    	}
    	return {
    		update: update
    	};
    }
    function WebGLObjects( gl, geometries, attributes, info ) {
    	let updateMap = new WeakMap();
    	function update( object ) {
    		const frame = info.render.frame;
    		const geometry = object.geometry;
    		const buffergeometry = geometries.get( object, geometry );
    		if ( updateMap.get( buffergeometry ) !== frame ) {
    			if ( geometry.isGeometry ) {
    				buffergeometry.updateFromObject( object );
    			}
    			geometries.update( buffergeometry );
    			updateMap.set( buffergeometry, frame );
    		}
    		if ( object.isInstancedMesh ) {
    			attributes.update( object.instanceMatrix, 34962 );
    			if ( object.instanceColor !== null ) {
    				attributes.update( object.instanceColor, 34962 );
    			}
    		}
    		return buffergeometry;
    	}
    	function dispose() {
    		updateMap = new WeakMap();
    	}
    	return {
    		update: update,
    		dispose: dispose
    	};
    }
    function CubeTexture( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding ) {
    	images = images !== undefined ? images : [];
    	mapping = mapping !== undefined ? mapping : CubeReflectionMapping;
    	format = format !== undefined ? format : RGBFormat;
    	Texture.call( this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
    	this.flipY = false;
    }
    CubeTexture.prototype = Object.create( Texture.prototype );
    CubeTexture.prototype.constructor = CubeTexture;
    CubeTexture.prototype.isCubeTexture = true;
    Object.defineProperty( CubeTexture.prototype, 'images', {
    	get: function () {
    		return this.image;
    	},
    	set: function ( value ) {
    		this.image = value;
    	}
    } );
    function DataTexture2DArray( data, width, height, depth ) {
    	Texture.call( this, null );
    	this.image = { data: data || null, width: width || 1, height: height || 1, depth: depth || 1 };
    	this.magFilter = NearestFilter;
    	this.minFilter = NearestFilter;
    	this.wrapR = ClampToEdgeWrapping;
    	this.generateMipmaps = false;
    	this.flipY = false;
    	this.needsUpdate = true;
    }
    DataTexture2DArray.prototype = Object.create( Texture.prototype );
    DataTexture2DArray.prototype.constructor = DataTexture2DArray;
    DataTexture2DArray.prototype.isDataTexture2DArray = true;
    function DataTexture3D( data, width, height, depth ) {
    	Texture.call( this, null );
    	this.image = { data: data || null, width: width || 1, height: height || 1, depth: depth || 1 };
    	this.magFilter = NearestFilter;
    	this.minFilter = NearestFilter;
    	this.wrapR = ClampToEdgeWrapping;
    	this.generateMipmaps = false;
    	this.flipY = false;
    	this.needsUpdate = true;
    }
    DataTexture3D.prototype = Object.create( Texture.prototype );
    DataTexture3D.prototype.constructor = DataTexture3D;
    DataTexture3D.prototype.isDataTexture3D = true;
    const emptyTexture = new Texture();
    const emptyTexture2dArray = new DataTexture2DArray();
    const emptyTexture3d = new DataTexture3D();
    const emptyCubeTexture = new CubeTexture();
    const arrayCacheF32 = [];
    const arrayCacheI32 = [];
    const mat4array = new Float32Array( 16 );
    const mat3array = new Float32Array( 9 );
    const mat2array = new Float32Array( 4 );
    function flatten$1( array, nBlocks, blockSize ) {
    	const firstElem = array[ 0 ];
    	if ( firstElem <= 0 || firstElem > 0 ) return array;
    	const n = nBlocks * blockSize;
    	let r = arrayCacheF32[ n ];
    	if ( r === undefined ) {
    		r = new Float32Array( n );
    		arrayCacheF32[ n ] = r;
    	}
    	if ( nBlocks !== 0 ) {
    		firstElem.toArray( r, 0 );
    		for ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {
    			offset += blockSize;
    			array[ i ].toArray( r, offset );
    		}
    	}
    	return r;
    }
    function arraysEqual( a, b ) {
    	if ( a.length !== b.length ) return false;
    	for ( let i = 0, l = a.length; i < l; i ++ ) {
    		if ( a[ i ] !== b[ i ] ) return false;
    	}
    	return true;
    }
    function copyArray( a, b ) {
    	for ( let i = 0, l = b.length; i < l; i ++ ) {
    		a[ i ] = b[ i ];
    	}
    }
    function allocTexUnits( textures, n ) {
    	let r = arrayCacheI32[ n ];
    	if ( r === undefined ) {
    		r = new Int32Array( n );
    		arrayCacheI32[ n ] = r;
    	}
    	for ( let i = 0; i !== n; ++ i ) {
    		r[ i ] = textures.allocateTextureUnit();
    	}
    	return r;
    }
    function setValueV1f( gl, v ) {
    	const cache = this.cache;
    	if ( cache[ 0 ] === v ) return;
    	gl.uniform1f( this.addr, v );
    	cache[ 0 ] = v;
    }
    function setValueV2f( gl, v ) {
    	const cache = this.cache;
    	if ( v.x !== undefined ) {
    		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {
    			gl.uniform2f( this.addr, v.x, v.y );
    			cache[ 0 ] = v.x;
    			cache[ 1 ] = v.y;
    		}
    	} else {
    		if ( arraysEqual( cache, v ) ) return;
    		gl.uniform2fv( this.addr, v );
    		copyArray( cache, v );
    	}
    }
    function setValueV3f( gl, v ) {
    	const cache = this.cache;
    	if ( v.x !== undefined ) {
    		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {
    			gl.uniform3f( this.addr, v.x, v.y, v.z );
    			cache[ 0 ] = v.x;
    			cache[ 1 ] = v.y;
    			cache[ 2 ] = v.z;
    		}
    	} else if ( v.r !== undefined ) {
    		if ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {
    			gl.uniform3f( this.addr, v.r, v.g, v.b );
    			cache[ 0 ] = v.r;
    			cache[ 1 ] = v.g;
    			cache[ 2 ] = v.b;
    		}
    	} else {
    		if ( arraysEqual( cache, v ) ) return;
    		gl.uniform3fv( this.addr, v );
    		copyArray( cache, v );
    	}
    }
    function setValueV4f( gl, v ) {
    	const cache = this.cache;
    	if ( v.x !== undefined ) {
    		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {
    			gl.uniform4f( this.addr, v.x, v.y, v.z, v.w );
    			cache[ 0 ] = v.x;
    			cache[ 1 ] = v.y;
    			cache[ 2 ] = v.z;
    			cache[ 3 ] = v.w;
    		}
    	} else {
    		if ( arraysEqual( cache, v ) ) return;
    		gl.uniform4fv( this.addr, v );
    		copyArray( cache, v );
    	}
    }
    function setValueM2( gl, v ) {
    	const cache = this.cache;
    	const elements = v.elements;
    	if ( elements === undefined ) {
    		if ( arraysEqual( cache, v ) ) return;
    		gl.uniformMatrix2fv( this.addr, false, v );
    		copyArray( cache, v );
    	} else {
    		if ( arraysEqual( cache, elements ) ) return;
    		mat2array.set( elements );
    		gl.uniformMatrix2fv( this.addr, false, mat2array );
    		copyArray( cache, elements );
    	}
    }
    function setValueM3( gl, v ) {
    	const cache = this.cache;
    	const elements = v.elements;
    	if ( elements === undefined ) {
    		if ( arraysEqual( cache, v ) ) return;
    		gl.uniformMatrix3fv( this.addr, false, v );
    		copyArray( cache, v );
    	} else {
    		if ( arraysEqual( cache, elements ) ) return;
    		mat3array.set( elements );
    		gl.uniformMatrix3fv( this.addr, false, mat3array );
    		copyArray( cache, elements );
    	}
    }
    function setValueM4( gl, v ) {
    	const cache = this.cache;
    	const elements = v.elements;
    	if ( elements === undefined ) {
    		if ( arraysEqual( cache, v ) ) return;
    		gl.uniformMatrix4fv( this.addr, false, v );
    		copyArray( cache, v );
    	} else {
    		if ( arraysEqual( cache, elements ) ) return;
    		mat4array.set( elements );
    		gl.uniformMatrix4fv( this.addr, false, mat4array );
    		copyArray( cache, elements );
    	}
    }
    function setValueT1( gl, v, textures ) {
    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();
    	if ( cache[ 0 ] !== unit ) {
    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;
    	}
    	textures.safeSetTexture2D( v || emptyTexture, unit );
    }
    function setValueT2DArray1( gl, v, textures ) {
    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();
    	if ( cache[ 0 ] !== unit ) {
    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;
    	}
    	textures.setTexture2DArray( v || emptyTexture2dArray, unit );
    }
    function setValueT3D1( gl, v, textures ) {
    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();
    	if ( cache[ 0 ] !== unit ) {
    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;
    	}
    	textures.setTexture3D( v || emptyTexture3d, unit );
    }
    function setValueT6( gl, v, textures ) {
    	const cache = this.cache;
    	const unit = textures.allocateTextureUnit();
    	if ( cache[ 0 ] !== unit ) {
    		gl.uniform1i( this.addr, unit );
    		cache[ 0 ] = unit;
    	}
    	textures.safeSetTextureCube( v || emptyCubeTexture, unit );
    }
    function setValueV1i( gl, v ) {
    	const cache = this.cache;
    	if ( cache[ 0 ] === v ) return;
    	gl.uniform1i( this.addr, v );
    	cache[ 0 ] = v;
    }
    function setValueV2i( gl, v ) {
    	const cache = this.cache;
    	if ( arraysEqual( cache, v ) ) return;
    	gl.uniform2iv( this.addr, v );
    	copyArray( cache, v );
    }
    function setValueV3i( gl, v ) {
    	const cache = this.cache;
    	if ( arraysEqual( cache, v ) ) return;
    	gl.uniform3iv( this.addr, v );
    	copyArray( cache, v );
    }
    function setValueV4i( gl, v ) {
    	const cache = this.cache;
    	if ( arraysEqual( cache, v ) ) return;
    	gl.uniform4iv( this.addr, v );
    	copyArray( cache, v );
    }
    function setValueV1ui( gl, v ) {
    	const cache = this.cache;
    	if ( cache[ 0 ] === v ) return;
    	gl.uniform1ui( this.addr, v );
    	cache[ 0 ] = v;
    }
    function getSingularSetter( type ) {
    	switch ( type ) {
    		case 0x1406: return setValueV1f;
    		case 0x8b50: return setValueV2f;
    		case 0x8b51: return setValueV3f;
    		case 0x8b52: return setValueV4f;
    		case 0x8b5a: return setValueM2;
    		case 0x8b5b: return setValueM3;
    		case 0x8b5c: return setValueM4;
    		case 0x1404: case 0x8b56: return setValueV1i;
    		case 0x8b53: case 0x8b57: return setValueV2i;
    		case 0x8b54: case 0x8b58: return setValueV3i;
    		case 0x8b55: case 0x8b59: return setValueV4i;
    		case 0x1405: return setValueV1ui;
    		case 0x8b5e:
    		case 0x8d66:
    		case 0x8dca:
    		case 0x8dd2:
    		case 0x8b62:
    			return setValueT1;
    		case 0x8b5f:
    		case 0x8dcb:
    		case 0x8dd3:
    			return setValueT3D1;
    		case 0x8b60:
    		case 0x8dcc:
    		case 0x8dd4:
    		case 0x8dc5:
    			return setValueT6;
    		case 0x8dc1:
    		case 0x8dcf:
    		case 0x8dd7:
    		case 0x8dc4:
    			return setValueT2DArray1;
    	}
    }
    function setValueV1fArray( gl, v ) {
    	gl.uniform1fv( this.addr, v );
    }
    function setValueV1iArray( gl, v ) {
    	gl.uniform1iv( this.addr, v );
    }
    function setValueV2iArray( gl, v ) {
    	gl.uniform2iv( this.addr, v );
    }
    function setValueV3iArray( gl, v ) {
    	gl.uniform3iv( this.addr, v );
    }
    function setValueV4iArray( gl, v ) {
    	gl.uniform4iv( this.addr, v );
    }
    function setValueV2fArray( gl, v ) {
    	const data = flatten$1( v, this.size, 2 );
    	gl.uniform2fv( this.addr, data );
    }
    function setValueV3fArray( gl, v ) {
    	const data = flatten$1( v, this.size, 3 );
    	gl.uniform3fv( this.addr, data );
    }
    function setValueV4fArray( gl, v ) {
    	const data = flatten$1( v, this.size, 4 );
    	gl.uniform4fv( this.addr, data );
    }
    function setValueM2Array( gl, v ) {
    	const data = flatten$1( v, this.size, 4 );
    	gl.uniformMatrix2fv( this.addr, false, data );
    }
    function setValueM3Array( gl, v ) {
    	const data = flatten$1( v, this.size, 9 );
    	gl.uniformMatrix3fv( this.addr, false, data );
    }
    function setValueM4Array( gl, v ) {
    	const data = flatten$1( v, this.size, 16 );
    	gl.uniformMatrix4fv( this.addr, false, data );
    }
    function setValueT1Array( gl, v, textures ) {
    	const n = v.length;
    	const units = allocTexUnits( textures, n );
    	gl.uniform1iv( this.addr, units );
    	for ( let i = 0; i !== n; ++ i ) {
    		textures.safeSetTexture2D( v[ i ] || emptyTexture, units[ i ] );
    	}
    }
    function setValueT6Array( gl, v, textures ) {
    	const n = v.length;
    	const units = allocTexUnits( textures, n );
    	gl.uniform1iv( this.addr, units );
    	for ( let i = 0; i !== n; ++ i ) {
    		textures.safeSetTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );
    	}
    }
    function getPureArraySetter( type ) {
    	switch ( type ) {
    		case 0x1406: return setValueV1fArray;
    		case 0x8b50: return setValueV2fArray;
    		case 0x8b51: return setValueV3fArray;
    		case 0x8b52: return setValueV4fArray;
    		case 0x8b5a: return setValueM2Array;
    		case 0x8b5b: return setValueM3Array;
    		case 0x8b5c: return setValueM4Array;
    		case 0x1404: case 0x8b56: return setValueV1iArray;
    		case 0x8b53: case 0x8b57: return setValueV2iArray;
    		case 0x8b54: case 0x8b58: return setValueV3iArray;
    		case 0x8b55: case 0x8b59: return setValueV4iArray;
    		case 0x8b5e:
    		case 0x8d66:
    		case 0x8dca:
    		case 0x8dd2:
    		case 0x8b62:
    			return setValueT1Array;
    		case 0x8b60:
    		case 0x8dcc:
    		case 0x8dd4:
    		case 0x8dc5:
    			return setValueT6Array;
    	}
    }
    function SingleUniform( id, activeInfo, addr ) {
    	this.id = id;
    	this.addr = addr;
    	this.cache = [];
    	this.setValue = getSingularSetter( activeInfo.type );
    }
    function PureArrayUniform( id, activeInfo, addr ) {
    	this.id = id;
    	this.addr = addr;
    	this.cache = [];
    	this.size = activeInfo.size;
    	this.setValue = getPureArraySetter( activeInfo.type );
    }
    PureArrayUniform.prototype.updateCache = function ( data ) {
    	const cache = this.cache;
    	if ( data instanceof Float32Array && cache.length !== data.length ) {
    		this.cache = new Float32Array( data.length );
    	}
    	copyArray( cache, data );
    };
    function StructuredUniform( id ) {
    	this.id = id;
    	this.seq = [];
    	this.map = {};
    }
    StructuredUniform.prototype.setValue = function ( gl, value, textures ) {
    	const seq = this.seq;
    	for ( let i = 0, n = seq.length; i !== n; ++ i ) {
    		const u = seq[ i ];
    		u.setValue( gl, value[ u.id ], textures );
    	}
    };
    const RePathPart = /([\w\d_]+)(\])?(\[|\.)?/g;
    function addUniform( container, uniformObject ) {
    	container.seq.push( uniformObject );
    	container.map[ uniformObject.id ] = uniformObject;
    }
    function parseUniform( activeInfo, addr, container ) {
    	const path = activeInfo.name,
    		pathLength = path.length;
    	RePathPart.lastIndex = 0;
    	while ( true ) {
    		const match = RePathPart.exec( path ),
    			matchEnd = RePathPart.lastIndex;
    		let id = match[ 1 ];
    		const idIsIndex = match[ 2 ] === ']',
    			subscript = match[ 3 ];
    		if ( idIsIndex ) id = id | 0;
    		if ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {
    			addUniform( container, subscript === undefined ?
    				new SingleUniform( id, activeInfo, addr ) :
    				new PureArrayUniform( id, activeInfo, addr ) );
    			break;
    		} else {
    			const map = container.map;
    			let next = map[ id ];
    			if ( next === undefined ) {
    				next = new StructuredUniform( id );
    				addUniform( container, next );
    			}
    			container = next;
    		}
    	}
    }
    function WebGLUniforms( gl, program ) {
    	this.seq = [];
    	this.map = {};
    	const n = gl.getProgramParameter( program, 35718 );
    	for ( let i = 0; i < n; ++ i ) {
    		const info = gl.getActiveUniform( program, i ),
    			addr = gl.getUniformLocation( program, info.name );
    		parseUniform( info, addr, this );
    	}
    }
    WebGLUniforms.prototype.setValue = function ( gl, name, value, textures ) {
    	const u = this.map[ name ];
    	if ( u !== undefined ) u.setValue( gl, value, textures );
    };
    WebGLUniforms.prototype.setOptional = function ( gl, object, name ) {
    	const v = object[ name ];
    	if ( v !== undefined ) this.setValue( gl, name, v );
    };
    WebGLUniforms.upload = function ( gl, seq, values, textures ) {
    	for ( let i = 0, n = seq.length; i !== n; ++ i ) {
    		const u = seq[ i ],
    			v = values[ u.id ];
    		if ( v.needsUpdate !== false ) {
    			u.setValue( gl, v.value, textures );
    		}
    	}
    };
    WebGLUniforms.seqWithValue = function ( seq, values ) {
    	const r = [];
    	for ( let i = 0, n = seq.length; i !== n; ++ i ) {
    		const u = seq[ i ];
    		if ( u.id in values ) r.push( u );
    	}
    	return r;
    };
    function WebGLShader( gl, type, string ) {
    	const shader = gl.createShader( type );
    	gl.shaderSource( shader, string );
    	gl.compileShader( shader );
    	return shader;
    }
    let programIdCount = 0;
    function addLineNumbers( string ) {
    	const lines = string.split( '\n' );
    	for ( let i = 0; i < lines.length; i ++ ) {
    		lines[ i ] = ( i + 1 ) + ': ' + lines[ i ];
    	}
    	return lines.join( '\n' );
    }
    function getEncodingComponents( encoding ) {
    	switch ( encoding ) {
    		case LinearEncoding:
    			return [ 'Linear', '( value )' ];
    		case sRGBEncoding:
    			return [ 'sRGB', '( value )' ];
    		case RGBEEncoding:
    			return [ 'RGBE', '( value )' ];
    		case RGBM7Encoding:
    			return [ 'RGBM', '( value, 7.0 )' ];
    		case RGBM16Encoding:
    			return [ 'RGBM', '( value, 16.0 )' ];
    		case RGBDEncoding:
    			return [ 'RGBD', '( value, 256.0 )' ];
    		case GammaEncoding:
    			return [ 'Gamma', '( value, float( GAMMA_FACTOR ) )' ];
    		case LogLuvEncoding:
    			return [ 'LogLuv', '( value )' ];
    		default:
    			console.warn( 'THREE.WebGLProgram: Unsupported encoding:', encoding );
    			return [ 'Linear', '( value )' ];
    	}
    }
    function getShaderErrors( gl, shader, type ) {
    	const status = gl.getShaderParameter( shader, 35713 );
    	const log = gl.getShaderInfoLog( shader ).trim();
    	if ( status && log === '' ) return '';
    	const source = gl.getShaderSource( shader );
    	return 'THREE.WebGLShader: gl.getShaderInfoLog() ' + type + '\n' + log + addLineNumbers( source );
    }
    function getTexelDecodingFunction( functionName, encoding ) {
    	const components = getEncodingComponents( encoding );
    	return 'vec4 ' + functionName + '( vec4 value ) { return ' + components[ 0 ] + 'ToLinear' + components[ 1 ] + '; }';
    }
    function getTexelEncodingFunction( functionName, encoding ) {
    	const components = getEncodingComponents( encoding );
    	return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[ 0 ] + components[ 1 ] + '; }';
    }
    function getToneMappingFunction( functionName, toneMapping ) {
    	let toneMappingName;
    	switch ( toneMapping ) {
    		case LinearToneMapping:
    			toneMappingName = 'Linear';
    			break;
    		case ReinhardToneMapping:
    			toneMappingName = 'Reinhard';
    			break;
    		case CineonToneMapping:
    			toneMappingName = 'OptimizedCineon';
    			break;
    		case ACESFilmicToneMapping:
    			toneMappingName = 'ACESFilmic';
    			break;
    		case CustomToneMapping:
    			toneMappingName = 'Custom';
    			break;
    		default:
    			console.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );
    			toneMappingName = 'Linear';
    	}
    	return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
    }
    function generateExtensions( parameters ) {
    	const chunks = [
    		( parameters.extensionDerivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ) ? '#extension GL_OES_standard_derivatives : enable' : '',
    		( parameters.extensionFragDepth || parameters.logarithmicDepthBuffer ) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '',
    		( parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ) ? '#extension GL_EXT_draw_buffers : require' : '',
    		( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''
    	];
    	return chunks.filter( filterEmptyLine ).join( '\n' );
    }
    function generateDefines( defines ) {
    	const chunks = [];
    	for ( const name in defines ) {
    		const value = defines[ name ];
    		if ( value === false ) continue;
    		chunks.push( '#define ' + name + ' ' + value );
    	}
    	return chunks.join( '\n' );
    }
    function fetchAttributeLocations( gl, program ) {
    	const attributes = {};
    	const n = gl.getProgramParameter( program, 35721 );
    	for ( let i = 0; i < n; i ++ ) {
    		const info = gl.getActiveAttrib( program, i );
    		const name = info.name;
    		attributes[ name ] = gl.getAttribLocation( program, name );
    	}
    	return attributes;
    }
    function filterEmptyLine( string ) {
    	return string !== '';
    }
    function replaceLightNums( string, parameters ) {
    	return string
    		.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
    		.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
    		.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
    		.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
    		.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )
    		.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )
    		.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )
    		.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );
    }
    function replaceClippingPlaneNums( string, parameters ) {
    	return string
    		.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
    		.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );
    }
    const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;
    function resolveIncludes( string ) {
    	return string.replace( includePattern, includeReplacer );
    }
    function includeReplacer( match, include ) {
    	const string = ShaderChunk[ include ];
    	if ( string === undefined ) {
    		throw new Error( 'Can not resolve #include <' + include + '>' );
    	}
    	return resolveIncludes( string );
    }
    const deprecatedUnrollLoopPattern = /#pragma unroll_loop[\s]+?for \( int i \= (\d+)\; i < (\d+)\; i \+\+ \) \{([\s\S]+?)(?=\})\}/g;
    const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
    function unrollLoops( string ) {
    	return string
    		.replace( unrollLoopPattern, loopReplacer )
    		.replace( deprecatedUnrollLoopPattern, deprecatedLoopReplacer );
    }
    function deprecatedLoopReplacer( match, start, end, snippet ) {
    	console.warn( 'WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.' );
    	return loopReplacer( match, start, end, snippet );
    }
    function loopReplacer( match, start, end, snippet ) {
    	let string = '';
    	for ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {
    		string += snippet
    			.replace( /\[\s*i\s*\]/g, '[ ' + i + ' ]' )
    			.replace( /UNROLLED_LOOP_INDEX/g, i );
    	}
    	return string;
    }
    function generatePrecision( parameters ) {
    	let precisionstring = "precision " + parameters.precision + " float;\nprecision " + parameters.precision + " int;";
    	if ( parameters.precision === "highp" ) {
    		precisionstring += "\n#define HIGH_PRECISION";
    	} else if ( parameters.precision === "mediump" ) {
    		precisionstring += "\n#define MEDIUM_PRECISION";
    	} else if ( parameters.precision === "lowp" ) {
    		precisionstring += "\n#define LOW_PRECISION";
    	}
    	return precisionstring;
    }
    function generateShadowMapTypeDefine( parameters ) {
    	let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';
    	if ( parameters.shadowMapType === PCFShadowMap ) {
    		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
    	} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {
    		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
    	} else if ( parameters.shadowMapType === VSMShadowMap ) {
    		shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';
    	}
    	return shadowMapTypeDefine;
    }
    function generateEnvMapTypeDefine( parameters ) {
    	let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
    	if ( parameters.envMap ) {
    		switch ( parameters.envMapMode ) {
    			case CubeReflectionMapping:
    			case CubeRefractionMapping:
    				envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
    				break;
    			case CubeUVReflectionMapping:
    			case CubeUVRefractionMapping:
    				envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
    				break;
    		}
    	}
    	return envMapTypeDefine;
    }
    function generateEnvMapModeDefine( parameters ) {
    	let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';
    	if ( parameters.envMap ) {
    		switch ( parameters.envMapMode ) {
    			case CubeRefractionMapping:
    			case CubeUVRefractionMapping:
    				envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
    				break;
    		}
    	}
    	return envMapModeDefine;
    }
    function generateEnvMapBlendingDefine( parameters ) {
    	let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';
    	if ( parameters.envMap ) {
    		switch ( parameters.combine ) {
    			case MultiplyOperation:
    				envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
    				break;
    			case MixOperation:
    				envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
    				break;
    			case AddOperation:
    				envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
    				break;
    		}
    	}
    	return envMapBlendingDefine;
    }
    function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
    	const gl = renderer.getContext();
    	const defines = parameters.defines;
    	let vertexShader = parameters.vertexShader;
    	let fragmentShader = parameters.fragmentShader;
    	const shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );
    	const envMapTypeDefine = generateEnvMapTypeDefine( parameters );
    	const envMapModeDefine = generateEnvMapModeDefine( parameters );
    	const envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );
    	const gammaFactorDefine = ( renderer.gammaFactor > 0 ) ? renderer.gammaFactor : 1.0;
    	const customExtensions = parameters.isWebGL2 ? '' : generateExtensions( parameters );
    	const customDefines = generateDefines( defines );
    	const program = gl.createProgram();
    	let prefixVertex, prefixFragment;
    	let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + "\n" : '';
    	if ( parameters.isRawShaderMaterial ) {
    		prefixVertex = [
    			customDefines
    		].filter( filterEmptyLine ).join( '\n' );
    		if ( prefixVertex.length > 0 ) {
    			prefixVertex += '\n';
    		}
    		prefixFragment = [
    			customExtensions,
    			customDefines
    		].filter( filterEmptyLine ).join( '\n' );
    		if ( prefixFragment.length > 0 ) {
    			prefixFragment += '\n';
    		}
    	} else {
    		prefixVertex = [
    			generatePrecision( parameters ),
    			'#define SHADER_NAME ' + parameters.shaderName,
    			customDefines,
    			parameters.instancing ? '#define USE_INSTANCING' : '',
    			parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',
    			parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '',
    			'#define GAMMA_FACTOR ' + gammaFactorDefine,
    			'#define MAX_BONES ' + parameters.maxBones,
    			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
    			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',
    			parameters.map ? '#define USE_MAP' : '',
    			parameters.envMap ? '#define USE_ENVMAP' : '',
    			parameters.envMap ? '#define ' + envMapModeDefine : '',
    			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
    			parameters.aoMap ? '#define USE_AOMAP' : '',
    			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
    			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
    			parameters.normalMap ? '#define USE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',
    			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
    			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
    			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
    			parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '',
    			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
    			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
    			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
    			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
    			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
    			parameters.vertexTangents ? '#define USE_TANGENT' : '',
    			parameters.vertexColors ? '#define USE_COLOR' : '',
    			parameters.vertexUvs ? '#define USE_UV' : '',
    			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',
    			parameters.flatShading ? '#define FLAT_SHADED' : '',
    			parameters.skinning ? '#define USE_SKINNING' : '',
    			parameters.useVertexTexture ? '#define BONE_TEXTURE' : '',
    			parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
    			parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
    			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
    			parameters.flipSided ? '#define FLIP_SIDED' : '',
    			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
    			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
    			parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',
    			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
    			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
    			'uniform mat4 modelMatrix;',
    			'uniform mat4 modelViewMatrix;',
    			'uniform mat4 projectionMatrix;',
    			'uniform mat4 viewMatrix;',
    			'uniform mat3 normalMatrix;',
    			'uniform vec3 cameraPosition;',
    			'uniform bool isOrthographic;',
    			'#ifdef USE_INSTANCING',
    			'	attribute mat4 instanceMatrix;',
    			'#endif',
    			'#ifdef USE_INSTANCING_COLOR',
    			'	attribute vec3 instanceColor;',
    			'#endif',
    			'attribute vec3 position;',
    			'attribute vec3 normal;',
    			'attribute vec2 uv;',
    			'#ifdef USE_TANGENT',
    			'	attribute vec4 tangent;',
    			'#endif',
    			'#ifdef USE_COLOR',
    			'	attribute vec3 color;',
    			'#endif',
    			'#ifdef USE_MORPHTARGETS',
    			'	attribute vec3 morphTarget0;',
    			'	attribute vec3 morphTarget1;',
    			'	attribute vec3 morphTarget2;',
    			'	attribute vec3 morphTarget3;',
    			'	#ifdef USE_MORPHNORMALS',
    			'		attribute vec3 morphNormal0;',
    			'		attribute vec3 morphNormal1;',
    			'		attribute vec3 morphNormal2;',
    			'		attribute vec3 morphNormal3;',
    			'	#else',
    			'		attribute vec3 morphTarget4;',
    			'		attribute vec3 morphTarget5;',
    			'		attribute vec3 morphTarget6;',
    			'		attribute vec3 morphTarget7;',
    			'	#endif',
    			'#endif',
    			'#ifdef USE_SKINNING',
    			'	attribute vec4 skinIndex;',
    			'	attribute vec4 skinWeight;',
    			'#endif',
    			'\n'
    		].filter( filterEmptyLine ).join( '\n' );
    		prefixFragment = [
    			customExtensions,
    			generatePrecision( parameters ),
    			'#define SHADER_NAME ' + parameters.shaderName,
    			customDefines,
    			parameters.alphaTest ? '#define ALPHATEST ' + parameters.alphaTest + ( parameters.alphaTest % 1 ? '' : '.0' ) : '',
    			'#define GAMMA_FACTOR ' + gammaFactorDefine,
    			( parameters.useFog && parameters.fog ) ? '#define USE_FOG' : '',
    			( parameters.useFog && parameters.fogExp2 ) ? '#define FOG_EXP2' : '',
    			parameters.map ? '#define USE_MAP' : '',
    			parameters.matcap ? '#define USE_MATCAP' : '',
    			parameters.envMap ? '#define USE_ENVMAP' : '',
    			parameters.envMap ? '#define ' + envMapTypeDefine : '',
    			parameters.envMap ? '#define ' + envMapModeDefine : '',
    			parameters.envMap ? '#define ' + envMapBlendingDefine : '',
    			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
    			parameters.aoMap ? '#define USE_AOMAP' : '',
    			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
    			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
    			parameters.normalMap ? '#define USE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.objectSpaceNormalMap ) ? '#define OBJECTSPACE_NORMALMAP' : '',
    			( parameters.normalMap && parameters.tangentSpaceNormalMap ) ? '#define TANGENTSPACE_NORMALMAP' : '',
    			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
    			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
    			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
    			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
    			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
    			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
    			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
    			parameters.sheen ? '#define USE_SHEEN' : '',
    			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
    			parameters.vertexTangents ? '#define USE_TANGENT' : '',
    			parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '',
    			parameters.vertexUvs ? '#define USE_UV' : '',
    			parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '',
    			parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',
    			parameters.flatShading ? '#define FLAT_SHADED' : '',
    			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
    			parameters.flipSided ? '#define FLIP_SIDED' : '',
    			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
    			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
    			parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',
    			parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '',
    			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
    			( parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ) ? '#define USE_LOGDEPTHBUF_EXT' : '',
    			( ( parameters.extensionShaderTextureLOD || parameters.envMap ) && parameters.rendererExtensionShaderTextureLod ) ? '#define TEXTURE_LOD_EXT' : '',
    			'uniform mat4 viewMatrix;',
    			'uniform vec3 cameraPosition;',
    			'uniform bool isOrthographic;',
    			( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
    			( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '',
    			( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',
    			parameters.dithering ? '#define DITHERING' : '',
    			ShaderChunk[ 'encodings_pars_fragment' ],
    			parameters.map ? getTexelDecodingFunction( 'mapTexelToLinear', parameters.mapEncoding ) : '',
    			parameters.matcap ? getTexelDecodingFunction( 'matcapTexelToLinear', parameters.matcapEncoding ) : '',
    			parameters.envMap ? getTexelDecodingFunction( 'envMapTexelToLinear', parameters.envMapEncoding ) : '',
    			parameters.emissiveMap ? getTexelDecodingFunction( 'emissiveMapTexelToLinear', parameters.emissiveMapEncoding ) : '',
    			parameters.lightMap ? getTexelDecodingFunction( 'lightMapTexelToLinear', parameters.lightMapEncoding ) : '',
    			getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputEncoding ),
    			parameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',
    			'\n'
    		].filter( filterEmptyLine ).join( '\n' );
    	}
    	vertexShader = resolveIncludes( vertexShader );
    	vertexShader = replaceLightNums( vertexShader, parameters );
    	vertexShader = replaceClippingPlaneNums( vertexShader, parameters );
    	fragmentShader = resolveIncludes( fragmentShader );
    	fragmentShader = replaceLightNums( fragmentShader, parameters );
    	fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );
    	vertexShader = unrollLoops( vertexShader );
    	fragmentShader = unrollLoops( fragmentShader );
    	if ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {
    		versionString = '#version 300 es\n';
    		prefixVertex = [
    			'#define attribute in',
    			'#define varying out',
    			'#define texture2D texture'
    		].join( '\n' ) + '\n' + prefixVertex;
    		prefixFragment = [
    			'#define varying in',
    			( parameters.glslVersion === GLSL3 ) ? '' : 'out highp vec4 pc_fragColor;',
    			( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',
    			'#define gl_FragDepthEXT gl_FragDepth',
    			'#define texture2D texture',
    			'#define textureCube texture',
    			'#define texture2DProj textureProj',
    			'#define texture2DLodEXT textureLod',
    			'#define texture2DProjLodEXT textureProjLod',
    			'#define textureCubeLodEXT textureLod',
    			'#define texture2DGradEXT textureGrad',
    			'#define texture2DProjGradEXT textureProjGrad',
    			'#define textureCubeGradEXT textureGrad'
    		].join( '\n' ) + '\n' + prefixFragment;
    	}
    	const vertexGlsl = versionString + prefixVertex + vertexShader;
    	const fragmentGlsl = versionString + prefixFragment + fragmentShader;
    	const glVertexShader = WebGLShader( gl, 35633, vertexGlsl );
    	const glFragmentShader = WebGLShader( gl, 35632, fragmentGlsl );
    	gl.attachShader( program, glVertexShader );
    	gl.attachShader( program, glFragmentShader );
    	if ( parameters.index0AttributeName !== undefined ) {
    		gl.bindAttribLocation( program, 0, parameters.index0AttributeName );
    	} else if ( parameters.morphTargets === true ) {
    		gl.bindAttribLocation( program, 0, 'position' );
    	}
    	gl.linkProgram( program );
    	if ( renderer.debug.checkShaderErrors ) {
    		const programLog = gl.getProgramInfoLog( program ).trim();
    		const vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
    		const fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();
    		let runnable = true;
    		let haveDiagnostics = true;
    		if ( gl.getProgramParameter( program, 35714 ) === false ) {
    			runnable = false;
    			const vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );
    			const fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );
    			console.error( 'THREE.WebGLProgram: shader error: ', gl.getError(), '35715', gl.getProgramParameter( program, 35715 ), 'gl.getProgramInfoLog', programLog, vertexErrors, fragmentErrors );
    		} else if ( programLog !== '' ) {
    			console.warn( 'THREE.WebGLProgram: gl.getProgramInfoLog()', programLog );
    		} else if ( vertexLog === '' || fragmentLog === '' ) {
    			haveDiagnostics = false;
    		}
    		if ( haveDiagnostics ) {
    			this.diagnostics = {
    				runnable: runnable,
    				programLog: programLog,
    				vertexShader: {
    					log: vertexLog,
    					prefix: prefixVertex
    				},
    				fragmentShader: {
    					log: fragmentLog,
    					prefix: prefixFragment
    				}
    			};
    		}
    	}
    	gl.deleteShader( glVertexShader );
    	gl.deleteShader( glFragmentShader );
    	let cachedUniforms;
    	this.getUniforms = function () {
    		if ( cachedUniforms === undefined ) {
    			cachedUniforms = new WebGLUniforms( gl, program );
    		}
    		return cachedUniforms;
    	};
    	let cachedAttributes;
    	this.getAttributes = function () {
    		if ( cachedAttributes === undefined ) {
    			cachedAttributes = fetchAttributeLocations( gl, program );
    		}
    		return cachedAttributes;
    	};
    	this.destroy = function () {
    		bindingStates.releaseStatesOfProgram( this );
    		gl.deleteProgram( program );
    		this.program = undefined;
    	};
    	this.name = parameters.shaderName;
    	this.id = programIdCount ++;
    	this.cacheKey = cacheKey;
    	this.usedTimes = 1;
    	this.program = program;
    	this.vertexShader = glVertexShader;
    	this.fragmentShader = glFragmentShader;
    	return this;
    }
    function WebGLPrograms( renderer, cubemaps, extensions, capabilities, bindingStates, clipping ) {
    	const programs = [];
    	const isWebGL2 = capabilities.isWebGL2;
    	const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
    	const floatVertexTextures = capabilities.floatVertexTextures;
    	const maxVertexUniforms = capabilities.maxVertexUniforms;
    	const vertexTextures = capabilities.vertexTextures;
    	let precision = capabilities.precision;
    	const shaderIDs = {
    		MeshDepthMaterial: 'depth',
    		MeshDistanceMaterial: 'distanceRGBA',
    		MeshNormalMaterial: 'normal',
    		MeshBasicMaterial: 'basic',
    		MeshLambertMaterial: 'lambert',
    		MeshPhongMaterial: 'phong',
    		MeshToonMaterial: 'toon',
    		MeshStandardMaterial: 'physical',
    		MeshPhysicalMaterial: 'physical',
    		MeshMatcapMaterial: 'matcap',
    		LineBasicMaterial: 'basic',
    		LineDashedMaterial: 'dashed',
    		PointsMaterial: 'points',
    		ShadowMaterial: 'shadow',
    		SpriteMaterial: 'sprite'
    	};
    	const parameterNames = [
    		"precision", "isWebGL2", "supportsVertexTextures", "outputEncoding", "instancing", "instancingColor",
    		"map", "mapEncoding", "matcap", "matcapEncoding", "envMap", "envMapMode", "envMapEncoding", "envMapCubeUV",
    		"lightMap", "lightMapEncoding", "aoMap", "emissiveMap", "emissiveMapEncoding", "bumpMap", "normalMap", "objectSpaceNormalMap", "tangentSpaceNormalMap", "clearcoatMap", "clearcoatRoughnessMap", "clearcoatNormalMap", "displacementMap", "specularMap",
    		"roughnessMap", "metalnessMap", "gradientMap",
    		"alphaMap", "combine", "vertexColors", "vertexTangents", "vertexUvs", "uvsVertexOnly", "fog", "useFog", "fogExp2",
    		"flatShading", "sizeAttenuation", "logarithmicDepthBuffer", "skinning",
    		"maxBones", "useVertexTexture", "morphTargets", "morphNormals",
    		"maxMorphTargets", "maxMorphNormals", "premultipliedAlpha",
    		"numDirLights", "numPointLights", "numSpotLights", "numHemiLights", "numRectAreaLights",
    		"numDirLightShadows", "numPointLightShadows", "numSpotLightShadows",
    		"shadowMapEnabled", "shadowMapType", "toneMapping", 'physicallyCorrectLights',
    		"alphaTest", "doubleSided", "flipSided", "numClippingPlanes", "numClipIntersection", "depthPacking", "dithering",
    		"sheen", "transmissionMap"
    	];
    	function getMaxBones( object ) {
    		const skeleton = object.skeleton;
    		const bones = skeleton.bones;
    		if ( floatVertexTextures ) {
    			return 1024;
    		} else {
    			const nVertexUniforms = maxVertexUniforms;
    			const nVertexMatrices = Math.floor( ( nVertexUniforms - 20 ) / 4 );
    			const maxBones = Math.min( nVertexMatrices, bones.length );
    			if ( maxBones < bones.length ) {
    				console.warn( 'THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.' );
    				return 0;
    			}
    			return maxBones;
    		}
    	}
    	function getTextureEncodingFromMap( map ) {
    		let encoding;
    		if ( ! map ) {
    			encoding = LinearEncoding;
    		} else if ( map.isTexture ) {
    			encoding = map.encoding;
    		} else if ( map.isWebGLRenderTarget ) {
    			console.warn( "THREE.WebGLPrograms.getTextureEncodingFromMap: don't use render targets as textures. Use their .texture property instead." );
    			encoding = map.texture.encoding;
    		}
    		return encoding;
    	}
    	function getParameters( material, lights, shadows, scene, object ) {
    		const fog = scene.fog;
    		const environment = material.isMeshStandardMaterial ? scene.environment : null;
    		const envMap = cubemaps.get( material.envMap || environment );
    		const shaderID = shaderIDs[ material.type ];
    		const maxBones = object.isSkinnedMesh ? getMaxBones( object ) : 0;
    		if ( material.precision !== null ) {
    			precision = capabilities.getMaxPrecision( material.precision );
    			if ( precision !== material.precision ) {
    				console.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );
    			}
    		}
    		let vertexShader, fragmentShader;
    		if ( shaderID ) {
    			const shader = ShaderLib[ shaderID ];
    			vertexShader = shader.vertexShader;
    			fragmentShader = shader.fragmentShader;
    		} else {
    			vertexShader = material.vertexShader;
    			fragmentShader = material.fragmentShader;
    		}
    		const currentRenderTarget = renderer.getRenderTarget();
    		const parameters = {
    			isWebGL2: isWebGL2,
    			shaderID: shaderID,
    			shaderName: material.type,
    			vertexShader: vertexShader,
    			fragmentShader: fragmentShader,
    			defines: material.defines,
    			isRawShaderMaterial: material.isRawShaderMaterial === true,
    			glslVersion: material.glslVersion,
    			precision: precision,
    			instancing: object.isInstancedMesh === true,
    			instancingColor: object.isInstancedMesh === true && object.instanceColor !== null,
    			supportsVertexTextures: vertexTextures,
    			outputEncoding: ( currentRenderTarget !== null ) ? getTextureEncodingFromMap( currentRenderTarget.texture ) : renderer.outputEncoding,
    			map: !! material.map,
    			mapEncoding: getTextureEncodingFromMap( material.map ),
    			matcap: !! material.matcap,
    			matcapEncoding: getTextureEncodingFromMap( material.matcap ),
    			envMap: !! envMap,
    			envMapMode: envMap && envMap.mapping,
    			envMapEncoding: getTextureEncodingFromMap( envMap ),
    			envMapCubeUV: ( !! envMap ) && ( ( envMap.mapping === CubeUVReflectionMapping ) || ( envMap.mapping === CubeUVRefractionMapping ) ),
    			lightMap: !! material.lightMap,
    			lightMapEncoding: getTextureEncodingFromMap( material.lightMap ),
    			aoMap: !! material.aoMap,
    			emissiveMap: !! material.emissiveMap,
    			emissiveMapEncoding: getTextureEncodingFromMap( material.emissiveMap ),
    			bumpMap: !! material.bumpMap,
    			normalMap: !! material.normalMap,
    			objectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,
    			tangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,
    			clearcoatMap: !! material.clearcoatMap,
    			clearcoatRoughnessMap: !! material.clearcoatRoughnessMap,
    			clearcoatNormalMap: !! material.clearcoatNormalMap,
    			displacementMap: !! material.displacementMap,
    			roughnessMap: !! material.roughnessMap,
    			metalnessMap: !! material.metalnessMap,
    			specularMap: !! material.specularMap,
    			alphaMap: !! material.alphaMap,
    			gradientMap: !! material.gradientMap,
    			sheen: !! material.sheen,
    			transmissionMap: !! material.transmissionMap,
    			combine: material.combine,
    			vertexTangents: ( material.normalMap && material.vertexTangents ),
    			vertexColors: material.vertexColors,
    			vertexUvs: !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatMap || !! material.clearcoatRoughnessMap || !! material.clearcoatNormalMap || !! material.displacementMap || !! material.transmissionMap,
    			uvsVertexOnly: ! ( !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearcoatNormalMap || !! material.transmissionMap ) && !! material.displacementMap,
    			fog: !! fog,
    			useFog: material.fog,
    			fogExp2: ( fog && fog.isFogExp2 ),
    			flatShading: material.flatShading,
    			sizeAttenuation: material.sizeAttenuation,
    			logarithmicDepthBuffer: logarithmicDepthBuffer,
    			skinning: material.skinning && maxBones > 0,
    			maxBones: maxBones,
    			useVertexTexture: floatVertexTextures,
    			morphTargets: material.morphTargets,
    			morphNormals: material.morphNormals,
    			maxMorphTargets: renderer.maxMorphTargets,
    			maxMorphNormals: renderer.maxMorphNormals,
    			numDirLights: lights.directional.length,
    			numPointLights: lights.point.length,
    			numSpotLights: lights.spot.length,
    			numRectAreaLights: lights.rectArea.length,
    			numHemiLights: lights.hemi.length,
    			numDirLightShadows: lights.directionalShadowMap.length,
    			numPointLightShadows: lights.pointShadowMap.length,
    			numSpotLightShadows: lights.spotShadowMap.length,
    			numClippingPlanes: clipping.numPlanes,
    			numClipIntersection: clipping.numIntersection,
    			dithering: material.dithering,
    			shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
    			shadowMapType: renderer.shadowMap.type,
    			toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
    			physicallyCorrectLights: renderer.physicallyCorrectLights,
    			premultipliedAlpha: material.premultipliedAlpha,
    			alphaTest: material.alphaTest,
    			doubleSided: material.side === DoubleSide,
    			flipSided: material.side === BackSide,
    			depthPacking: ( material.depthPacking !== undefined ) ? material.depthPacking : false,
    			index0AttributeName: material.index0AttributeName,
    			extensionDerivatives: material.extensions && material.extensions.derivatives,
    			extensionFragDepth: material.extensions && material.extensions.fragDepth,
    			extensionDrawBuffers: material.extensions && material.extensions.drawBuffers,
    			extensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,
    			rendererExtensionFragDepth: isWebGL2 || extensions.has( 'EXT_frag_depth' ),
    			rendererExtensionDrawBuffers: isWebGL2 || extensions.has( 'WEBGL_draw_buffers' ),
    			rendererExtensionShaderTextureLod: isWebGL2 || extensions.has( 'EXT_shader_texture_lod' ),
    			customProgramCacheKey: material.customProgramCacheKey()
    		};
    		return parameters;
    	}
    	function getProgramCacheKey( parameters ) {
    		const array = [];
    		if ( parameters.shaderID ) {
    			array.push( parameters.shaderID );
    		} else {
    			array.push( parameters.fragmentShader );
    			array.push( parameters.vertexShader );
    		}
    		if ( parameters.defines !== undefined ) {
    			for ( const name in parameters.defines ) {
    				array.push( name );
    				array.push( parameters.defines[ name ] );
    			}
    		}
    		if ( parameters.isRawShaderMaterial === false ) {
    			for ( let i = 0; i < parameterNames.length; i ++ ) {
    				array.push( parameters[ parameterNames[ i ] ] );
    			}
    			array.push( renderer.outputEncoding );
    			array.push( renderer.gammaFactor );
    		}
    		array.push( parameters.customProgramCacheKey );
    		return array.join();
    	}
    	function getUniforms( material ) {
    		const shaderID = shaderIDs[ material.type ];
    		let uniforms;
    		if ( shaderID ) {
    			const shader = ShaderLib[ shaderID ];
    			uniforms = UniformsUtils.clone( shader.uniforms );
    		} else {
    			uniforms = material.uniforms;
    		}
    		return uniforms;
    	}
    	function acquireProgram( parameters, cacheKey ) {
    		let program;
    		for ( let p = 0, pl = programs.length; p < pl; p ++ ) {
    			const preexistingProgram = programs[ p ];
    			if ( preexistingProgram.cacheKey === cacheKey ) {
    				program = preexistingProgram;
    				++ program.usedTimes;
    				break;
    			}
    		}
    		if ( program === undefined ) {
    			program = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );
    			programs.push( program );
    		}
    		return program;
    	}
    	function releaseProgram( program ) {
    		if ( -- program.usedTimes === 0 ) {
    			const i = programs.indexOf( program );
    			programs[ i ] = programs[ programs.length - 1 ];
    			programs.pop();
    			program.destroy();
    		}
    	}
    	return {
    		getParameters: getParameters,
    		getProgramCacheKey: getProgramCacheKey,
    		getUniforms: getUniforms,
    		acquireProgram: acquireProgram,
    		releaseProgram: releaseProgram,
    		programs: programs
    	};
    }
    function WebGLProperties() {
    	let properties = new WeakMap();
    	function get( object ) {
    		let map = properties.get( object );
    		if ( map === undefined ) {
    			map = {};
    			properties.set( object, map );
    		}
    		return map;
    	}
    	function remove( object ) {
    		properties.delete( object );
    	}
    	function update( object, key, value ) {
    		properties.get( object )[ key ] = value;
    	}
    	function dispose() {
    		properties = new WeakMap();
    	}
    	return {
    		get: get,
    		remove: remove,
    		update: update,
    		dispose: dispose
    	};
    }
    function painterSortStable( a, b ) {
    	if ( a.groupOrder !== b.groupOrder ) {
    		return a.groupOrder - b.groupOrder;
    	} else if ( a.renderOrder !== b.renderOrder ) {
    		return a.renderOrder - b.renderOrder;
    	} else if ( a.program !== b.program ) {
    		return a.program.id - b.program.id;
    	} else if ( a.material.id !== b.material.id ) {
    		return a.material.id - b.material.id;
    	} else if ( a.z !== b.z ) {
    		return a.z - b.z;
    	} else {
    		return a.id - b.id;
    	}
    }
    function reversePainterSortStable( a, b ) {
    	if ( a.groupOrder !== b.groupOrder ) {
    		return a.groupOrder - b.groupOrder;
    	} else if ( a.renderOrder !== b.renderOrder ) {
    		return a.renderOrder - b.renderOrder;
    	} else if ( a.z !== b.z ) {
    		return b.z - a.z;
    	} else {
    		return a.id - b.id;
    	}
    }
    function WebGLRenderList( properties ) {
    	const renderItems = [];
    	let renderItemsIndex = 0;
    	const opaque = [];
    	const transparent = [];
    	const defaultProgram = { id: - 1 };
    	function init() {
    		renderItemsIndex = 0;
    		opaque.length = 0;
    		transparent.length = 0;
    	}
    	function getNextRenderItem( object, geometry, material, groupOrder, z, group ) {
    		let renderItem = renderItems[ renderItemsIndex ];
    		const materialProperties = properties.get( material );
    		if ( renderItem === undefined ) {
    			renderItem = {
    				id: object.id,
    				object: object,
    				geometry: geometry,
    				material: material,
    				program: materialProperties.program || defaultProgram,
    				groupOrder: groupOrder,
    				renderOrder: object.renderOrder,
    				z: z,
    				group: group
    			};
    			renderItems[ renderItemsIndex ] = renderItem;
    		} else {
    			renderItem.id = object.id;
    			renderItem.object = object;
    			renderItem.geometry = geometry;
    			renderItem.material = material;
    			renderItem.program = materialProperties.program || defaultProgram;
    			renderItem.groupOrder = groupOrder;
    			renderItem.renderOrder = object.renderOrder;
    			renderItem.z = z;
    			renderItem.group = group;
    		}
    		renderItemsIndex ++;
    		return renderItem;
    	}
    	function push( object, geometry, material, groupOrder, z, group ) {
    		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );
    		( material.transparent === true ? transparent : opaque ).push( renderItem );
    	}
    	function unshift( object, geometry, material, groupOrder, z, group ) {
    		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );
    		( material.transparent === true ? transparent : opaque ).unshift( renderItem );
    	}
    	function sort( customOpaqueSort, customTransparentSort ) {
    		if ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );
    		if ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );
    	}
    	function finish() {
    		for ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {
    			const renderItem = renderItems[ i ];
    			if ( renderItem.id === null ) break;
    			renderItem.id = null;
    			renderItem.object = null;
    			renderItem.geometry = null;
    			renderItem.material = null;
    			renderItem.program = null;
    			renderItem.group = null;
    		}
    	}
    	return {
    		opaque: opaque,
    		transparent: transparent,
    		init: init,
    		push: push,
    		unshift: unshift,
    		finish: finish,
    		sort: sort
    	};
    }
    function WebGLRenderLists( properties ) {
    	let lists = new WeakMap();
    	function get( scene, camera ) {
    		const cameras = lists.get( scene );
    		let list;
    		if ( cameras === undefined ) {
    			list = new WebGLRenderList( properties );
    			lists.set( scene, new WeakMap() );
    			lists.get( scene ).set( camera, list );
    		} else {
    			list = cameras.get( camera );
    			if ( list === undefined ) {
    				list = new WebGLRenderList( properties );
    				cameras.set( camera, list );
    			}
    		}
    		return list;
    	}
    	function dispose() {
    		lists = new WeakMap();
    	}
    	return {
    		get: get,
    		dispose: dispose
    	};
    }
    function UniformsCache() {
    	const lights = {};
    	return {
    		get: function ( light ) {
    			if ( lights[ light.id ] !== undefined ) {
    				return lights[ light.id ];
    			}
    			let uniforms;
    			switch ( light.type ) {
    				case 'DirectionalLight':
    					uniforms = {
    						direction: new Vector3(),
    						color: new Color()
    					};
    					break;
    				case 'SpotLight':
    					uniforms = {
    						position: new Vector3(),
    						direction: new Vector3(),
    						color: new Color(),
    						distance: 0,
    						coneCos: 0,
    						penumbraCos: 0,
    						decay: 0
    					};
    					break;
    				case 'PointLight':
    					uniforms = {
    						position: new Vector3(),
    						color: new Color(),
    						distance: 0,
    						decay: 0
    					};
    					break;
    				case 'HemisphereLight':
    					uniforms = {
    						direction: new Vector3(),
    						skyColor: new Color(),
    						groundColor: new Color()
    					};
    					break;
    				case 'RectAreaLight':
    					uniforms = {
    						color: new Color(),
    						position: new Vector3(),
    						halfWidth: new Vector3(),
    						halfHeight: new Vector3()
    					};
    					break;
    			}
    			lights[ light.id ] = uniforms;
    			return uniforms;
    		}
    	};
    }
    function ShadowUniformsCache() {
    	const lights = {};
    	return {
    		get: function ( light ) {
    			if ( lights[ light.id ] !== undefined ) {
    				return lights[ light.id ];
    			}
    			let uniforms;
    			switch ( light.type ) {
    				case 'DirectionalLight':
    					uniforms = {
    						shadowBias: 0,
    						shadowNormalBias: 0,
    						shadowRadius: 1,
    						shadowMapSize: new Vector2()
    					};
    					break;
    				case 'SpotLight':
    					uniforms = {
    						shadowBias: 0,
    						shadowNormalBias: 0,
    						shadowRadius: 1,
    						shadowMapSize: new Vector2()
    					};
    					break;
    				case 'PointLight':
    					uniforms = {
    						shadowBias: 0,
    						shadowNormalBias: 0,
    						shadowRadius: 1,
    						shadowMapSize: new Vector2(),
    						shadowCameraNear: 1,
    						shadowCameraFar: 1000
    					};
    					break;
    			}
    			lights[ light.id ] = uniforms;
    			return uniforms;
    		}
    	};
    }
    let nextVersion = 0;
    function shadowCastingLightsFirst( lightA, lightB ) {
    	return ( lightB.castShadow ? 1 : 0 ) - ( lightA.castShadow ? 1 : 0 );
    }
    function WebGLLights() {
    	const cache = new UniformsCache();
    	const shadowCache = ShadowUniformsCache();
    	const state = {
    		version: 0,
    		hash: {
    			directionalLength: - 1,
    			pointLength: - 1,
    			spotLength: - 1,
    			rectAreaLength: - 1,
    			hemiLength: - 1,
    			numDirectionalShadows: - 1,
    			numPointShadows: - 1,
    			numSpotShadows: - 1
    		},
    		ambient: [ 0, 0, 0 ],
    		probe: [],
    		directional: [],
    		directionalShadow: [],
    		directionalShadowMap: [],
    		directionalShadowMatrix: [],
    		spot: [],
    		spotShadow: [],
    		spotShadowMap: [],
    		spotShadowMatrix: [],
    		rectArea: [],
    		rectAreaLTC1: null,
    		rectAreaLTC2: null,
    		point: [],
    		pointShadow: [],
    		pointShadowMap: [],
    		pointShadowMatrix: [],
    		hemi: []
    	};
    	for ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );
    	const vector3 = new Vector3();
    	const matrix4 = new Matrix4();
    	const matrix42 = new Matrix4();
    	function setup( lights, shadows, camera ) {
    		let r = 0, g = 0, b = 0;
    		for ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );
    		let directionalLength = 0;
    		let pointLength = 0;
    		let spotLength = 0;
    		let rectAreaLength = 0;
    		let hemiLength = 0;
    		let numDirectionalShadows = 0;
    		let numPointShadows = 0;
    		let numSpotShadows = 0;
    		const viewMatrix = camera.matrixWorldInverse;
    		lights.sort( shadowCastingLightsFirst );
    		for ( let i = 0, l = lights.length; i < l; i ++ ) {
    			const light = lights[ i ];
    			const color = light.color;
    			const intensity = light.intensity;
    			const distance = light.distance;
    			const shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;
    			if ( light.isAmbientLight ) {
    				r += color.r * intensity;
    				g += color.g * intensity;
    				b += color.b * intensity;
    			} else if ( light.isLightProbe ) {
    				for ( let j = 0; j < 9; j ++ ) {
    					state.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );
    				}
    			} else if ( light.isDirectionalLight ) {
    				const uniforms = cache.get( light );
    				uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
    				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
    				vector3.setFromMatrixPosition( light.target.matrixWorld );
    				uniforms.direction.sub( vector3 );
    				uniforms.direction.transformDirection( viewMatrix );
    				if ( light.castShadow ) {
    					const shadow = light.shadow;
    					const shadowUniforms = shadowCache.get( light );
    					shadowUniforms.shadowBias = shadow.bias;
    					shadowUniforms.shadowNormalBias = shadow.normalBias;
    					shadowUniforms.shadowRadius = shadow.radius;
    					shadowUniforms.shadowMapSize = shadow.mapSize;
    					state.directionalShadow[ directionalLength ] = shadowUniforms;
    					state.directionalShadowMap[ directionalLength ] = shadowMap;
    					state.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;
    					numDirectionalShadows ++;
    				}
    				state.directional[ directionalLength ] = uniforms;
    				directionalLength ++;
    			} else if ( light.isSpotLight ) {
    				const uniforms = cache.get( light );
    				uniforms.position.setFromMatrixPosition( light.matrixWorld );
    				uniforms.position.applyMatrix4( viewMatrix );
    				uniforms.color.copy( color ).multiplyScalar( intensity );
    				uniforms.distance = distance;
    				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
    				vector3.setFromMatrixPosition( light.target.matrixWorld );
    				uniforms.direction.sub( vector3 );
    				uniforms.direction.transformDirection( viewMatrix );
    				uniforms.coneCos = Math.cos( light.angle );
    				uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
    				uniforms.decay = light.decay;
    				if ( light.castShadow ) {
    					const shadow = light.shadow;
    					const shadowUniforms = shadowCache.get( light );
    					shadowUniforms.shadowBias = shadow.bias;
    					shadowUniforms.shadowNormalBias = shadow.normalBias;
    					shadowUniforms.shadowRadius = shadow.radius;
    					shadowUniforms.shadowMapSize = shadow.mapSize;
    					state.spotShadow[ spotLength ] = shadowUniforms;
    					state.spotShadowMap[ spotLength ] = shadowMap;
    					state.spotShadowMatrix[ spotLength ] = light.shadow.matrix;
    					numSpotShadows ++;
    				}
    				state.spot[ spotLength ] = uniforms;
    				spotLength ++;
    			} else if ( light.isRectAreaLight ) {
    				const uniforms = cache.get( light );
    				uniforms.color.copy( color ).multiplyScalar( intensity );
    				uniforms.position.setFromMatrixPosition( light.matrixWorld );
    				uniforms.position.applyMatrix4( viewMatrix );
    				matrix42.identity();
    				matrix4.copy( light.matrixWorld );
    				matrix4.premultiply( viewMatrix );
    				matrix42.extractRotation( matrix4 );
    				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
    				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );
    				uniforms.halfWidth.applyMatrix4( matrix42 );
    				uniforms.halfHeight.applyMatrix4( matrix42 );
    				state.rectArea[ rectAreaLength ] = uniforms;
    				rectAreaLength ++;
    			} else if ( light.isPointLight ) {
    				const uniforms = cache.get( light );
    				uniforms.position.setFromMatrixPosition( light.matrixWorld );
    				uniforms.position.applyMatrix4( viewMatrix );
    				uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
    				uniforms.distance = light.distance;
    				uniforms.decay = light.decay;
    				if ( light.castShadow ) {
    					const shadow = light.shadow;
    					const shadowUniforms = shadowCache.get( light );
    					shadowUniforms.shadowBias = shadow.bias;
    					shadowUniforms.shadowNormalBias = shadow.normalBias;
    					shadowUniforms.shadowRadius = shadow.radius;
    					shadowUniforms.shadowMapSize = shadow.mapSize;
    					shadowUniforms.shadowCameraNear = shadow.camera.near;
    					shadowUniforms.shadowCameraFar = shadow.camera.far;
    					state.pointShadow[ pointLength ] = shadowUniforms;
    					state.pointShadowMap[ pointLength ] = shadowMap;
    					state.pointShadowMatrix[ pointLength ] = light.shadow.matrix;
    					numPointShadows ++;
    				}
    				state.point[ pointLength ] = uniforms;
    				pointLength ++;
    			} else if ( light.isHemisphereLight ) {
    				const uniforms = cache.get( light );
    				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
    				uniforms.direction.transformDirection( viewMatrix );
    				uniforms.direction.normalize();
    				uniforms.skyColor.copy( light.color ).multiplyScalar( intensity );
    				uniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity );
    				state.hemi[ hemiLength ] = uniforms;
    				hemiLength ++;
    			}
    		}
    		if ( rectAreaLength > 0 ) {
    			state.rectAreaLTC1 = UniformsLib.LTC_1;
    			state.rectAreaLTC2 = UniformsLib.LTC_2;
    		}
    		state.ambient[ 0 ] = r;
    		state.ambient[ 1 ] = g;
    		state.ambient[ 2 ] = b;
    		const hash = state.hash;
    		if ( hash.directionalLength !== directionalLength ||
    			hash.pointLength !== pointLength ||
    			hash.spotLength !== spotLength ||
    			hash.rectAreaLength !== rectAreaLength ||
    			hash.hemiLength !== hemiLength ||
    			hash.numDirectionalShadows !== numDirectionalShadows ||
    			hash.numPointShadows !== numPointShadows ||
    			hash.numSpotShadows !== numSpotShadows ) {
    			state.directional.length = directionalLength;
    			state.spot.length = spotLength;
    			state.rectArea.length = rectAreaLength;
    			state.point.length = pointLength;
    			state.hemi.length = hemiLength;
    			state.directionalShadow.length = numDirectionalShadows;
    			state.directionalShadowMap.length = numDirectionalShadows;
    			state.pointShadow.length = numPointShadows;
    			state.pointShadowMap.length = numPointShadows;
    			state.spotShadow.length = numSpotShadows;
    			state.spotShadowMap.length = numSpotShadows;
    			state.directionalShadowMatrix.length = numDirectionalShadows;
    			state.pointShadowMatrix.length = numPointShadows;
    			state.spotShadowMatrix.length = numSpotShadows;
    			hash.directionalLength = directionalLength;
    			hash.pointLength = pointLength;
    			hash.spotLength = spotLength;
    			hash.rectAreaLength = rectAreaLength;
    			hash.hemiLength = hemiLength;
    			hash.numDirectionalShadows = numDirectionalShadows;
    			hash.numPointShadows = numPointShadows;
    			hash.numSpotShadows = numSpotShadows;
    			state.version = nextVersion ++;
    		}
    	}
    	return {
    		setup: setup,
    		state: state
    	};
    }
    function WebGLRenderState() {
    	const lights = new WebGLLights();
    	const lightsArray = [];
    	const shadowsArray = [];
    	function init() {
    		lightsArray.length = 0;
    		shadowsArray.length = 0;
    	}
    	function pushLight( light ) {
    		lightsArray.push( light );
    	}
    	function pushShadow( shadowLight ) {
    		shadowsArray.push( shadowLight );
    	}
    	function setupLights( camera ) {
    		lights.setup( lightsArray, shadowsArray, camera );
    	}
    	const state = {
    		lightsArray: lightsArray,
    		shadowsArray: shadowsArray,
    		lights: lights
    	};
    	return {
    		init: init,
    		state: state,
    		setupLights: setupLights,
    		pushLight: pushLight,
    		pushShadow: pushShadow
    	};
    }
    function WebGLRenderStates() {
    	let renderStates = new WeakMap();
    	function get( scene, camera ) {
    		let renderState;
    		if ( renderStates.has( scene ) === false ) {
    			renderState = new WebGLRenderState();
    			renderStates.set( scene, new WeakMap() );
    			renderStates.get( scene ).set( camera, renderState );
    		} else {
    			if ( renderStates.get( scene ).has( camera ) === false ) {
    				renderState = new WebGLRenderState();
    				renderStates.get( scene ).set( camera, renderState );
    			} else {
    				renderState = renderStates.get( scene ).get( camera );
    			}
    		}
    		return renderState;
    	}
    	function dispose() {
    		renderStates = new WeakMap();
    	}
    	return {
    		get: get,
    		dispose: dispose
    	};
    }
    function MeshDepthMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'MeshDepthMaterial';
    	this.depthPacking = BasicDepthPacking;
    	this.skinning = false;
    	this.morphTargets = false;
    	this.map = null;
    	this.alphaMap = null;
    	this.displacementMap = null;
    	this.displacementScale = 1;
    	this.displacementBias = 0;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.fog = false;
    	this.setValues( parameters );
    }
    MeshDepthMaterial.prototype = Object.create( Material.prototype );
    MeshDepthMaterial.prototype.constructor = MeshDepthMaterial;
    MeshDepthMaterial.prototype.isMeshDepthMaterial = true;
    MeshDepthMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.depthPacking = source.depthPacking;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.map = source.map;
    	this.alphaMap = source.alphaMap;
    	this.displacementMap = source.displacementMap;
    	this.displacementScale = source.displacementScale;
    	this.displacementBias = source.displacementBias;
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	return this;
    };
    function MeshDistanceMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'MeshDistanceMaterial';
    	this.referencePosition = new Vector3();
    	this.nearDistance = 1;
    	this.farDistance = 1000;
    	this.skinning = false;
    	this.morphTargets = false;
    	this.map = null;
    	this.alphaMap = null;
    	this.displacementMap = null;
    	this.displacementScale = 1;
    	this.displacementBias = 0;
    	this.fog = false;
    	this.setValues( parameters );
    }
    MeshDistanceMaterial.prototype = Object.create( Material.prototype );
    MeshDistanceMaterial.prototype.constructor = MeshDistanceMaterial;
    MeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;
    MeshDistanceMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.referencePosition.copy( source.referencePosition );
    	this.nearDistance = source.nearDistance;
    	this.farDistance = source.farDistance;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.map = source.map;
    	this.alphaMap = source.alphaMap;
    	this.displacementMap = source.displacementMap;
    	this.displacementScale = source.displacementScale;
    	this.displacementBias = source.displacementBias;
    	return this;
    };
    var vsm_frag = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy ) / resolution ) );\n\tfor ( float i = -1.0; i < 1.0 ; i += SAMPLE_RATE) {\n\t\t#ifdef HORIZONAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( i, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, i ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean * HALF_SAMPLE_RATE;\n\tsquared_mean = squared_mean * HALF_SAMPLE_RATE;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";
    var vsm_vert = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";
    function WebGLShadowMap( _renderer, _objects, maxTextureSize ) {
    	let _frustum = new Frustum();
    	const _shadowMapSize = new Vector2(),
    		_viewportSize = new Vector2(),
    		_viewport = new Vector4(),
    		_depthMaterials = [],
    		_distanceMaterials = [],
    		_materialCache = {};
    	const shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide };
    	const shadowMaterialVertical = new ShaderMaterial( {
    		defines: {
    			SAMPLE_RATE: 2.0 / 8.0,
    			HALF_SAMPLE_RATE: 1.0 / 8.0
    		},
    		uniforms: {
    			shadow_pass: { value: null },
    			resolution: { value: new Vector2() },
    			radius: { value: 4.0 }
    		},
    		vertexShader: vsm_vert,
    		fragmentShader: vsm_frag
    	} );
    	const shadowMaterialHorizonal = shadowMaterialVertical.clone();
    	shadowMaterialHorizonal.defines.HORIZONAL_PASS = 1;
    	const fullScreenTri = new BufferGeometry();
    	fullScreenTri.setAttribute(
    		"position",
    		new BufferAttribute(
    			new Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),
    			3
    		)
    	);
    	const fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );
    	const scope = this;
    	this.enabled = false;
    	this.autoUpdate = true;
    	this.needsUpdate = false;
    	this.type = PCFShadowMap;
    	this.render = function ( lights, scene, camera ) {
    		if ( scope.enabled === false ) return;
    		if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;
    		if ( lights.length === 0 ) return;
    		const currentRenderTarget = _renderer.getRenderTarget();
    		const activeCubeFace = _renderer.getActiveCubeFace();
    		const activeMipmapLevel = _renderer.getActiveMipmapLevel();
    		const _state = _renderer.state;
    		_state.setBlending( NoBlending );
    		_state.buffers.color.setClear( 1, 1, 1, 1 );
    		_state.buffers.depth.setTest( true );
    		_state.setScissorTest( false );
    		for ( let i = 0, il = lights.length; i < il; i ++ ) {
    			const light = lights[ i ];
    			const shadow = light.shadow;
    			if ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;
    			if ( shadow === undefined ) {
    				console.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );
    				continue;
    			}
    			_shadowMapSize.copy( shadow.mapSize );
    			const shadowFrameExtents = shadow.getFrameExtents();
    			_shadowMapSize.multiply( shadowFrameExtents );
    			_viewportSize.copy( shadow.mapSize );
    			if ( _shadowMapSize.x > maxTextureSize || _shadowMapSize.y > maxTextureSize ) {
    				if ( _shadowMapSize.x > maxTextureSize ) {
    					_viewportSize.x = Math.floor( maxTextureSize / shadowFrameExtents.x );
    					_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
    					shadow.mapSize.x = _viewportSize.x;
    				}
    				if ( _shadowMapSize.y > maxTextureSize ) {
    					_viewportSize.y = Math.floor( maxTextureSize / shadowFrameExtents.y );
    					_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
    					shadow.mapSize.y = _viewportSize.y;
    				}
    			}
    			if ( shadow.map === null && ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {
    				const pars = { minFilter: LinearFilter, magFilter: LinearFilter, format: RGBAFormat };
    				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
    				shadow.map.texture.name = light.name + ".shadowMap";
    				shadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
    				shadow.camera.updateProjectionMatrix();
    			}
    			if ( shadow.map === null ) {
    				const pars = { minFilter: NearestFilter, magFilter: NearestFilter, format: RGBAFormat };
    				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
    				shadow.map.texture.name = light.name + ".shadowMap";
    				shadow.camera.updateProjectionMatrix();
    			}
    			_renderer.setRenderTarget( shadow.map );
    			_renderer.clear();
    			const viewportCount = shadow.getViewportCount();
    			for ( let vp = 0; vp < viewportCount; vp ++ ) {
    				const viewport = shadow.getViewport( vp );
    				_viewport.set(
    					_viewportSize.x * viewport.x,
    					_viewportSize.y * viewport.y,
    					_viewportSize.x * viewport.z,
    					_viewportSize.y * viewport.w
    				);
    				_state.viewport( _viewport );
    				shadow.updateMatrices( light, vp );
    				_frustum = shadow.getFrustum();
    				renderObject( scene, camera, shadow.camera, light, this.type );
    			}
    			if ( ! shadow.isPointLightShadow && this.type === VSMShadowMap ) {
    				VSMPass( shadow, camera );
    			}
    			shadow.needsUpdate = false;
    		}
    		scope.needsUpdate = false;
    		_renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );
    	};
    	function VSMPass( shadow, camera ) {
    		const geometry = _objects.update( fullScreenMesh );
    		shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
    		shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
    		shadowMaterialVertical.uniforms.radius.value = shadow.radius;
    		_renderer.setRenderTarget( shadow.mapPass );
    		_renderer.clear();
    		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );
    		shadowMaterialHorizonal.uniforms.shadow_pass.value = shadow.mapPass.texture;
    		shadowMaterialHorizonal.uniforms.resolution.value = shadow.mapSize;
    		shadowMaterialHorizonal.uniforms.radius.value = shadow.radius;
    		_renderer.setRenderTarget( shadow.map );
    		_renderer.clear();
    		_renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizonal, fullScreenMesh, null );
    	}
    	function getDepthMaterialVariant( useMorphing, useSkinning, useInstancing ) {
    		const index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;
    		let material = _depthMaterials[ index ];
    		if ( material === undefined ) {
    			material = new MeshDepthMaterial( {
    				depthPacking: RGBADepthPacking,
    				morphTargets: useMorphing,
    				skinning: useSkinning
    			} );
    			_depthMaterials[ index ] = material;
    		}
    		return material;
    	}
    	function getDistanceMaterialVariant( useMorphing, useSkinning, useInstancing ) {
    		const index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;
    		let material = _distanceMaterials[ index ];
    		if ( material === undefined ) {
    			material = new MeshDistanceMaterial( {
    				morphTargets: useMorphing,
    				skinning: useSkinning
    			} );
    			_distanceMaterials[ index ] = material;
    		}
    		return material;
    	}
    	function getDepthMaterial( object, geometry, material, light, shadowCameraNear, shadowCameraFar, type ) {
    		let result = null;
    		let getMaterialVariant = getDepthMaterialVariant;
    		let customMaterial = object.customDepthMaterial;
    		if ( light.isPointLight === true ) {
    			getMaterialVariant = getDistanceMaterialVariant;
    			customMaterial = object.customDistanceMaterial;
    		}
    		if ( customMaterial === undefined ) {
    			let useMorphing = false;
    			if ( material.morphTargets === true ) {
    				useMorphing = geometry.morphAttributes && geometry.morphAttributes.position && geometry.morphAttributes.position.length > 0;
    			}
    			let useSkinning = false;
    			if ( object.isSkinnedMesh === true ) {
    				if ( material.skinning === true ) {
    					useSkinning = true;
    				} else {
    					console.warn( 'THREE.WebGLShadowMap: THREE.SkinnedMesh with material.skinning set to false:', object );
    				}
    			}
    			const useInstancing = object.isInstancedMesh === true;
    			result = getMaterialVariant( useMorphing, useSkinning, useInstancing );
    		} else {
    			result = customMaterial;
    		}
    		if ( _renderer.localClippingEnabled &&
    				material.clipShadows === true &&
    				material.clippingPlanes.length !== 0 ) {
    			const keyA = result.uuid, keyB = material.uuid;
    			let materialsForVariant = _materialCache[ keyA ];
    			if ( materialsForVariant === undefined ) {
    				materialsForVariant = {};
    				_materialCache[ keyA ] = materialsForVariant;
    			}
    			let cachedMaterial = materialsForVariant[ keyB ];
    			if ( cachedMaterial === undefined ) {
    				cachedMaterial = result.clone();
    				materialsForVariant[ keyB ] = cachedMaterial;
    			}
    			result = cachedMaterial;
    		}
    		result.visible = material.visible;
    		result.wireframe = material.wireframe;
    		if ( type === VSMShadowMap ) {
    			result.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;
    		} else {
    			result.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];
    		}
    		result.clipShadows = material.clipShadows;
    		result.clippingPlanes = material.clippingPlanes;
    		result.clipIntersection = material.clipIntersection;
    		result.wireframeLinewidth = material.wireframeLinewidth;
    		result.linewidth = material.linewidth;
    		if ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {
    			result.referencePosition.setFromMatrixPosition( light.matrixWorld );
    			result.nearDistance = shadowCameraNear;
    			result.farDistance = shadowCameraFar;
    		}
    		return result;
    	}
    	function renderObject( object, camera, shadowCamera, light, type ) {
    		if ( object.visible === false ) return;
    		const visible = object.layers.test( camera.layers );
    		if ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {
    			if ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {
    				object.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );
    				const geometry = _objects.update( object );
    				const material = object.material;
    				if ( Array.isArray( material ) ) {
    					const groups = geometry.groups;
    					for ( let k = 0, kl = groups.length; k < kl; k ++ ) {
    						const group = groups[ k ];
    						const groupMaterial = material[ group.materialIndex ];
    						if ( groupMaterial && groupMaterial.visible ) {
    							const depthMaterial = getDepthMaterial( object, geometry, groupMaterial, light, shadowCamera.near, shadowCamera.far, type );
    							_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );
    						}
    					}
    				} else if ( material.visible ) {
    					const depthMaterial = getDepthMaterial( object, geometry, material, light, shadowCamera.near, shadowCamera.far, type );
    					_renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );
    				}
    			}
    		}
    		const children = object.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			renderObject( children[ i ], camera, shadowCamera, light, type );
    		}
    	}
    }
    function WebGLState( gl, extensions, capabilities ) {
    	const isWebGL2 = capabilities.isWebGL2;
    	function ColorBuffer() {
    		let locked = false;
    		const color = new Vector4();
    		let currentColorMask = null;
    		const currentColorClear = new Vector4( 0, 0, 0, 0 );
    		return {
    			setMask: function ( colorMask ) {
    				if ( currentColorMask !== colorMask && ! locked ) {
    					gl.colorMask( colorMask, colorMask, colorMask, colorMask );
    					currentColorMask = colorMask;
    				}
    			},
    			setLocked: function ( lock ) {
    				locked = lock;
    			},
    			setClear: function ( r, g, b, a, premultipliedAlpha ) {
    				if ( premultipliedAlpha === true ) {
    					r *= a; g *= a; b *= a;
    				}
    				color.set( r, g, b, a );
    				if ( currentColorClear.equals( color ) === false ) {
    					gl.clearColor( r, g, b, a );
    					currentColorClear.copy( color );
    				}
    			},
    			reset: function () {
    				locked = false;
    				currentColorMask = null;
    				currentColorClear.set( - 1, 0, 0, 0 );
    			}
    		};
    	}
    	function DepthBuffer() {
    		let locked = false;
    		let currentDepthMask = null;
    		let currentDepthFunc = null;
    		let currentDepthClear = null;
    		return {
    			setTest: function ( depthTest ) {
    				if ( depthTest ) {
    					enable( 2929 );
    				} else {
    					disable( 2929 );
    				}
    			},
    			setMask: function ( depthMask ) {
    				if ( currentDepthMask !== depthMask && ! locked ) {
    					gl.depthMask( depthMask );
    					currentDepthMask = depthMask;
    				}
    			},
    			setFunc: function ( depthFunc ) {
    				if ( currentDepthFunc !== depthFunc ) {
    					if ( depthFunc ) {
    						switch ( depthFunc ) {
    							case NeverDepth:
    								gl.depthFunc( 512 );
    								break;
    							case AlwaysDepth:
    								gl.depthFunc( 519 );
    								break;
    							case LessDepth:
    								gl.depthFunc( 513 );
    								break;
    							case LessEqualDepth:
    								gl.depthFunc( 515 );
    								break;
    							case EqualDepth:
    								gl.depthFunc( 514 );
    								break;
    							case GreaterEqualDepth:
    								gl.depthFunc( 518 );
    								break;
    							case GreaterDepth:
    								gl.depthFunc( 516 );
    								break;
    							case NotEqualDepth:
    								gl.depthFunc( 517 );
    								break;
    							default:
    								gl.depthFunc( 515 );
    						}
    					} else {
    						gl.depthFunc( 515 );
    					}
    					currentDepthFunc = depthFunc;
    				}
    			},
    			setLocked: function ( lock ) {
    				locked = lock;
    			},
    			setClear: function ( depth ) {
    				if ( currentDepthClear !== depth ) {
    					gl.clearDepth( depth );
    					currentDepthClear = depth;
    				}
    			},
    			reset: function () {
    				locked = false;
    				currentDepthMask = null;
    				currentDepthFunc = null;
    				currentDepthClear = null;
    			}
    		};
    	}
    	function StencilBuffer() {
    		let locked = false;
    		let currentStencilMask = null;
    		let currentStencilFunc = null;
    		let currentStencilRef = null;
    		let currentStencilFuncMask = null;
    		let currentStencilFail = null;
    		let currentStencilZFail = null;
    		let currentStencilZPass = null;
    		let currentStencilClear = null;
    		return {
    			setTest: function ( stencilTest ) {
    				if ( ! locked ) {
    					if ( stencilTest ) {
    						enable( 2960 );
    					} else {
    						disable( 2960 );
    					}
    				}
    			},
    			setMask: function ( stencilMask ) {
    				if ( currentStencilMask !== stencilMask && ! locked ) {
    					gl.stencilMask( stencilMask );
    					currentStencilMask = stencilMask;
    				}
    			},
    			setFunc: function ( stencilFunc, stencilRef, stencilMask ) {
    				if ( currentStencilFunc !== stencilFunc ||
    				     currentStencilRef !== stencilRef ||
    				     currentStencilFuncMask !== stencilMask ) {
    					gl.stencilFunc( stencilFunc, stencilRef, stencilMask );
    					currentStencilFunc = stencilFunc;
    					currentStencilRef = stencilRef;
    					currentStencilFuncMask = stencilMask;
    				}
    			},
    			setOp: function ( stencilFail, stencilZFail, stencilZPass ) {
    				if ( currentStencilFail !== stencilFail ||
    				     currentStencilZFail !== stencilZFail ||
    				     currentStencilZPass !== stencilZPass ) {
    					gl.stencilOp( stencilFail, stencilZFail, stencilZPass );
    					currentStencilFail = stencilFail;
    					currentStencilZFail = stencilZFail;
    					currentStencilZPass = stencilZPass;
    				}
    			},
    			setLocked: function ( lock ) {
    				locked = lock;
    			},
    			setClear: function ( stencil ) {
    				if ( currentStencilClear !== stencil ) {
    					gl.clearStencil( stencil );
    					currentStencilClear = stencil;
    				}
    			},
    			reset: function () {
    				locked = false;
    				currentStencilMask = null;
    				currentStencilFunc = null;
    				currentStencilRef = null;
    				currentStencilFuncMask = null;
    				currentStencilFail = null;
    				currentStencilZFail = null;
    				currentStencilZPass = null;
    				currentStencilClear = null;
    			}
    		};
    	}
    	const colorBuffer = new ColorBuffer();
    	const depthBuffer = new DepthBuffer();
    	const stencilBuffer = new StencilBuffer();
    	let enabledCapabilities = {};
    	let currentProgram = null;
    	let currentBlendingEnabled = null;
    	let currentBlending = null;
    	let currentBlendEquation = null;
    	let currentBlendSrc = null;
    	let currentBlendDst = null;
    	let currentBlendEquationAlpha = null;
    	let currentBlendSrcAlpha = null;
    	let currentBlendDstAlpha = null;
    	let currentPremultipledAlpha = false;
    	let currentFlipSided = null;
    	let currentCullFace = null;
    	let currentLineWidth = null;
    	let currentPolygonOffsetFactor = null;
    	let currentPolygonOffsetUnits = null;
    	const maxTextures = gl.getParameter( 35661 );
    	let lineWidthAvailable = false;
    	let version = 0;
    	const glVersion = gl.getParameter( 7938 );
    	if ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {
    		version = parseFloat( /^WebGL\ ([0-9])/.exec( glVersion )[ 1 ] );
    		lineWidthAvailable = ( version >= 1.0 );
    	} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {
    		version = parseFloat( /^OpenGL\ ES\ ([0-9])/.exec( glVersion )[ 1 ] );
    		lineWidthAvailable = ( version >= 2.0 );
    	}
    	let currentTextureSlot = null;
    	let currentBoundTextures = {};
    	const currentScissor = new Vector4();
    	const currentViewport = new Vector4();
    	function createTexture( type, target, count ) {
    		const data = new Uint8Array( 4 );
    		const texture = gl.createTexture();
    		gl.bindTexture( type, texture );
    		gl.texParameteri( type, 10241, 9728 );
    		gl.texParameteri( type, 10240, 9728 );
    		for ( let i = 0; i < count; i ++ ) {
    			gl.texImage2D( target + i, 0, 6408, 1, 1, 0, 6408, 5121, data );
    		}
    		return texture;
    	}
    	const emptyTextures = {};
    	emptyTextures[ 3553 ] = createTexture( 3553, 3553, 1 );
    	emptyTextures[ 34067 ] = createTexture( 34067, 34069, 6 );
    	colorBuffer.setClear( 0, 0, 0, 1 );
    	depthBuffer.setClear( 1 );
    	stencilBuffer.setClear( 0 );
    	enable( 2929 );
    	depthBuffer.setFunc( LessEqualDepth );
    	setFlipSided( false );
    	setCullFace( CullFaceBack );
    	enable( 2884 );
    	setBlending( NoBlending );
    	function enable( id ) {
    		if ( enabledCapabilities[ id ] !== true ) {
    			gl.enable( id );
    			enabledCapabilities[ id ] = true;
    		}
    	}
    	function disable( id ) {
    		if ( enabledCapabilities[ id ] !== false ) {
    			gl.disable( id );
    			enabledCapabilities[ id ] = false;
    		}
    	}
    	function useProgram( program ) {
    		if ( currentProgram !== program ) {
    			gl.useProgram( program );
    			currentProgram = program;
    			return true;
    		}
    		return false;
    	}
    	const equationToGL = {
    		[ AddEquation ]: 32774,
    		[ SubtractEquation ]: 32778,
    		[ ReverseSubtractEquation ]: 32779
    	};
    	if ( isWebGL2 ) {
    		equationToGL[ MinEquation ] = 32775;
    		equationToGL[ MaxEquation ] = 32776;
    	} else {
    		const extension = extensions.get( 'EXT_blend_minmax' );
    		if ( extension !== null ) {
    			equationToGL[ MinEquation ] = extension.MIN_EXT;
    			equationToGL[ MaxEquation ] = extension.MAX_EXT;
    		}
    	}
    	const factorToGL = {
    		[ ZeroFactor ]: 0,
    		[ OneFactor ]: 1,
    		[ SrcColorFactor ]: 768,
    		[ SrcAlphaFactor ]: 770,
    		[ SrcAlphaSaturateFactor ]: 776,
    		[ DstColorFactor ]: 774,
    		[ DstAlphaFactor ]: 772,
    		[ OneMinusSrcColorFactor ]: 769,
    		[ OneMinusSrcAlphaFactor ]: 771,
    		[ OneMinusDstColorFactor ]: 775,
    		[ OneMinusDstAlphaFactor ]: 773
    	};
    	function setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha ) {
    		if ( blending === NoBlending ) {
    			if ( currentBlendingEnabled ) {
    				disable( 3042 );
    				currentBlendingEnabled = false;
    			}
    			return;
    		}
    		if ( ! currentBlendingEnabled ) {
    			enable( 3042 );
    			currentBlendingEnabled = true;
    		}
    		if ( blending !== CustomBlending ) {
    			if ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {
    				if ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {
    					gl.blendEquation( 32774 );
    					currentBlendEquation = AddEquation;
    					currentBlendEquationAlpha = AddEquation;
    				}
    				if ( premultipliedAlpha ) {
    					switch ( blending ) {
    						case NormalBlending:
    							gl.blendFuncSeparate( 1, 771, 1, 771 );
    							break;
    						case AdditiveBlending:
    							gl.blendFunc( 1, 1 );
    							break;
    						case SubtractiveBlending:
    							gl.blendFuncSeparate( 0, 0, 769, 771 );
    							break;
    						case MultiplyBlending:
    							gl.blendFuncSeparate( 0, 768, 0, 770 );
    							break;
    						default:
    							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
    							break;
    					}
    				} else {
    					switch ( blending ) {
    						case NormalBlending:
    							gl.blendFuncSeparate( 770, 771, 1, 771 );
    							break;
    						case AdditiveBlending:
    							gl.blendFunc( 770, 1 );
    							break;
    						case SubtractiveBlending:
    							gl.blendFunc( 0, 769 );
    							break;
    						case MultiplyBlending:
    							gl.blendFunc( 0, 768 );
    							break;
    						default:
    							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
    							break;
    					}
    				}
    				currentBlendSrc = null;
    				currentBlendDst = null;
    				currentBlendSrcAlpha = null;
    				currentBlendDstAlpha = null;
    				currentBlending = blending;
    				currentPremultipledAlpha = premultipliedAlpha;
    			}
    			return;
    		}
    		blendEquationAlpha = blendEquationAlpha || blendEquation;
    		blendSrcAlpha = blendSrcAlpha || blendSrc;
    		blendDstAlpha = blendDstAlpha || blendDst;
    		if ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {
    			gl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );
    			currentBlendEquation = blendEquation;
    			currentBlendEquationAlpha = blendEquationAlpha;
    		}
    		if ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {
    			gl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );
    			currentBlendSrc = blendSrc;
    			currentBlendDst = blendDst;
    			currentBlendSrcAlpha = blendSrcAlpha;
    			currentBlendDstAlpha = blendDstAlpha;
    		}
    		currentBlending = blending;
    		currentPremultipledAlpha = null;
    	}
    	function setMaterial( material, frontFaceCW ) {
    		material.side === DoubleSide
    			? disable( 2884 )
    			: enable( 2884 );
    		let flipSided = ( material.side === BackSide );
    		if ( frontFaceCW ) flipSided = ! flipSided;
    		setFlipSided( flipSided );
    		( material.blending === NormalBlending && material.transparent === false )
    			? setBlending( NoBlending )
    			: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha );
    		depthBuffer.setFunc( material.depthFunc );
    		depthBuffer.setTest( material.depthTest );
    		depthBuffer.setMask( material.depthWrite );
    		colorBuffer.setMask( material.colorWrite );
    		const stencilWrite = material.stencilWrite;
    		stencilBuffer.setTest( stencilWrite );
    		if ( stencilWrite ) {
    			stencilBuffer.setMask( material.stencilWriteMask );
    			stencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );
    			stencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );
    		}
    		setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );
    	}
    	function setFlipSided( flipSided ) {
    		if ( currentFlipSided !== flipSided ) {
    			if ( flipSided ) {
    				gl.frontFace( 2304 );
    			} else {
    				gl.frontFace( 2305 );
    			}
    			currentFlipSided = flipSided;
    		}
    	}
    	function setCullFace( cullFace ) {
    		if ( cullFace !== CullFaceNone ) {
    			enable( 2884 );
    			if ( cullFace !== currentCullFace ) {
    				if ( cullFace === CullFaceBack ) {
    					gl.cullFace( 1029 );
    				} else if ( cullFace === CullFaceFront ) {
    					gl.cullFace( 1028 );
    				} else {
    					gl.cullFace( 1032 );
    				}
    			}
    		} else {
    			disable( 2884 );
    		}
    		currentCullFace = cullFace;
    	}
    	function setLineWidth( width ) {
    		if ( width !== currentLineWidth ) {
    			if ( lineWidthAvailable ) gl.lineWidth( width );
    			currentLineWidth = width;
    		}
    	}
    	function setPolygonOffset( polygonOffset, factor, units ) {
    		if ( polygonOffset ) {
    			enable( 32823 );
    			if ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {
    				gl.polygonOffset( factor, units );
    				currentPolygonOffsetFactor = factor;
    				currentPolygonOffsetUnits = units;
    			}
    		} else {
    			disable( 32823 );
    		}
    	}
    	function setScissorTest( scissorTest ) {
    		if ( scissorTest ) {
    			enable( 3089 );
    		} else {
    			disable( 3089 );
    		}
    	}
    	function activeTexture( webglSlot ) {
    		if ( webglSlot === undefined ) webglSlot = 33984 + maxTextures - 1;
    		if ( currentTextureSlot !== webglSlot ) {
    			gl.activeTexture( webglSlot );
    			currentTextureSlot = webglSlot;
    		}
    	}
    	function bindTexture( webglType, webglTexture ) {
    		if ( currentTextureSlot === null ) {
    			activeTexture();
    		}
    		let boundTexture = currentBoundTextures[ currentTextureSlot ];
    		if ( boundTexture === undefined ) {
    			boundTexture = { type: undefined, texture: undefined };
    			currentBoundTextures[ currentTextureSlot ] = boundTexture;
    		}
    		if ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {
    			gl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );
    			boundTexture.type = webglType;
    			boundTexture.texture = webglTexture;
    		}
    	}
    	function unbindTexture() {
    		const boundTexture = currentBoundTextures[ currentTextureSlot ];
    		if ( boundTexture !== undefined && boundTexture.type !== undefined ) {
    			gl.bindTexture( boundTexture.type, null );
    			boundTexture.type = undefined;
    			boundTexture.texture = undefined;
    		}
    	}
    	function compressedTexImage2D() {
    		try {
    			gl.compressedTexImage2D.apply( gl, arguments );
    		} catch ( error ) {
    			console.error( 'THREE.WebGLState:', error );
    		}
    	}
    	function texImage2D() {
    		try {
    			gl.texImage2D.apply( gl, arguments );
    		} catch ( error ) {
    			console.error( 'THREE.WebGLState:', error );
    		}
    	}
    	function texImage3D() {
    		try {
    			gl.texImage3D.apply( gl, arguments );
    		} catch ( error ) {
    			console.error( 'THREE.WebGLState:', error );
    		}
    	}
    	function scissor( scissor ) {
    		if ( currentScissor.equals( scissor ) === false ) {
    			gl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );
    			currentScissor.copy( scissor );
    		}
    	}
    	function viewport( viewport ) {
    		if ( currentViewport.equals( viewport ) === false ) {
    			gl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );
    			currentViewport.copy( viewport );
    		}
    	}
    	function reset() {
    		enabledCapabilities = {};
    		currentTextureSlot = null;
    		currentBoundTextures = {};
    		currentProgram = null;
    		currentBlending = null;
    		currentFlipSided = null;
    		currentCullFace = null;
    		colorBuffer.reset();
    		depthBuffer.reset();
    		stencilBuffer.reset();
    	}
    	return {
    		buffers: {
    			color: colorBuffer,
    			depth: depthBuffer,
    			stencil: stencilBuffer
    		},
    		enable: enable,
    		disable: disable,
    		useProgram: useProgram,
    		setBlending: setBlending,
    		setMaterial: setMaterial,
    		setFlipSided: setFlipSided,
    		setCullFace: setCullFace,
    		setLineWidth: setLineWidth,
    		setPolygonOffset: setPolygonOffset,
    		setScissorTest: setScissorTest,
    		activeTexture: activeTexture,
    		bindTexture: bindTexture,
    		unbindTexture: unbindTexture,
    		compressedTexImage2D: compressedTexImage2D,
    		texImage2D: texImage2D,
    		texImage3D: texImage3D,
    		scissor: scissor,
    		viewport: viewport,
    		reset: reset
    	};
    }
    function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {
    	const isWebGL2 = capabilities.isWebGL2;
    	const maxTextures = capabilities.maxTextures;
    	const maxCubemapSize = capabilities.maxCubemapSize;
    	const maxTextureSize = capabilities.maxTextureSize;
    	const maxSamples = capabilities.maxSamples;
    	const _videoTextures = new WeakMap();
    	let _canvas;
    	let useOffscreenCanvas = false;
    	try {
    		useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'
    			&& ( new OffscreenCanvas( 1, 1 ).getContext( "2d" ) ) !== null;
    	} catch ( err ) {
    	}
    	function createCanvas( width, height ) {
    		return useOffscreenCanvas ?
    			new OffscreenCanvas( width, height ) :
    			document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
    	}
    	function resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) {
    		let scale = 1;
    		if ( image.width > maxSize || image.height > maxSize ) {
    			scale = maxSize / Math.max( image.width, image.height );
    		}
    		if ( scale < 1 || needsPowerOfTwo === true ) {
    			if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
    				( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
    				( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {
    				const floor = needsPowerOfTwo ? MathUtils.floorPowerOfTwo : Math.floor;
    				const width = floor( scale * image.width );
    				const height = floor( scale * image.height );
    				if ( _canvas === undefined ) _canvas = createCanvas( width, height );
    				const canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;
    				canvas.width = width;
    				canvas.height = height;
    				const context = canvas.getContext( '2d' );
    				context.drawImage( image, 0, 0, width, height );
    				console.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' );
    				return canvas;
    			} else {
    				if ( 'data' in image ) {
    					console.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );
    				}
    				return image;
    			}
    		}
    		return image;
    	}
    	function isPowerOfTwo( image ) {
    		return MathUtils.isPowerOfTwo( image.width ) && MathUtils.isPowerOfTwo( image.height );
    	}
    	function textureNeedsPowerOfTwo( texture ) {
    		if ( isWebGL2 ) return false;
    		return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||
    			( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );
    	}
    	function textureNeedsGenerateMipmaps( texture, supportsMips ) {
    		return texture.generateMipmaps && supportsMips &&
    			texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
    	}
    	function generateMipmap( target, texture, width, height ) {
    		_gl.generateMipmap( target );
    		const textureProperties = properties.get( texture );
    		textureProperties.__maxMipLevel = Math.log( Math.max( width, height ) ) * Math.LOG2E;
    	}
    	function getInternalFormat( internalFormatName, glFormat, glType ) {
    		if ( isWebGL2 === false ) return glFormat;
    		if ( internalFormatName !== null ) {
    			if ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];
    			console.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'' );
    		}
    		let internalFormat = glFormat;
    		if ( glFormat === 6403 ) {
    			if ( glType === 5126 ) internalFormat = 33326;
    			if ( glType === 5131 ) internalFormat = 33325;
    			if ( glType === 5121 ) internalFormat = 33321;
    		}
    		if ( glFormat === 6407 ) {
    			if ( glType === 5126 ) internalFormat = 34837;
    			if ( glType === 5131 ) internalFormat = 34843;
    			if ( glType === 5121 ) internalFormat = 32849;
    		}
    		if ( glFormat === 6408 ) {
    			if ( glType === 5126 ) internalFormat = 34836;
    			if ( glType === 5131 ) internalFormat = 34842;
    			if ( glType === 5121 ) internalFormat = 32856;
    		}
    		if ( internalFormat === 33325 || internalFormat === 33326 ||
    			internalFormat === 34842 || internalFormat === 34836 ) {
    			extensions.get( 'EXT_color_buffer_float' );
    		}
    		return internalFormat;
    	}
    	function filterFallback( f ) {
    		if ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) {
    			return 9728;
    		}
    		return 9729;
    	}
    	function onTextureDispose( event ) {
    		const texture = event.target;
    		texture.removeEventListener( 'dispose', onTextureDispose );
    		deallocateTexture( texture );
    		if ( texture.isVideoTexture ) {
    			_videoTextures.delete( texture );
    		}
    		info.memory.textures --;
    	}
    	function onRenderTargetDispose( event ) {
    		const renderTarget = event.target;
    		renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );
    		deallocateRenderTarget( renderTarget );
    		info.memory.textures --;
    	}
    	function deallocateTexture( texture ) {
    		const textureProperties = properties.get( texture );
    		if ( textureProperties.__webglInit === undefined ) return;
    		_gl.deleteTexture( textureProperties.__webglTexture );
    		properties.remove( texture );
    	}
    	function deallocateRenderTarget( renderTarget ) {
    		const renderTargetProperties = properties.get( renderTarget );
    		const textureProperties = properties.get( renderTarget.texture );
    		if ( ! renderTarget ) return;
    		if ( textureProperties.__webglTexture !== undefined ) {
    			_gl.deleteTexture( textureProperties.__webglTexture );
    		}
    		if ( renderTarget.depthTexture ) {
    			renderTarget.depthTexture.dispose();
    		}
    		if ( renderTarget.isWebGLCubeRenderTarget ) {
    			for ( let i = 0; i < 6; i ++ ) {
    				_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
    				if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );
    			}
    		} else {
    			_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
    			if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
    			if ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );
    			if ( renderTargetProperties.__webglColorRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer );
    			if ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );
    		}
    		properties.remove( renderTarget.texture );
    		properties.remove( renderTarget );
    	}
    	let textureUnits = 0;
    	function resetTextureUnits() {
    		textureUnits = 0;
    	}
    	function allocateTextureUnit() {
    		const textureUnit = textureUnits;
    		if ( textureUnit >= maxTextures ) {
    			console.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures );
    		}
    		textureUnits += 1;
    		return textureUnit;
    	}
    	function setTexture2D( texture, slot ) {
    		const textureProperties = properties.get( texture );
    		if ( texture.isVideoTexture ) updateVideoTexture( texture );
    		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
    			const image = texture.image;
    			if ( image === undefined ) {
    				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined' );
    			} else if ( image.complete === false ) {
    				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );
    			} else {
    				uploadTexture( textureProperties, texture, slot );
    				return;
    			}
    		}
    		state.activeTexture( 33984 + slot );
    		state.bindTexture( 3553, textureProperties.__webglTexture );
    	}
    	function setTexture2DArray( texture, slot ) {
    		const textureProperties = properties.get( texture );
    		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
    			uploadTexture( textureProperties, texture, slot );
    			return;
    		}
    		state.activeTexture( 33984 + slot );
    		state.bindTexture( 35866, textureProperties.__webglTexture );
    	}
    	function setTexture3D( texture, slot ) {
    		const textureProperties = properties.get( texture );
    		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
    			uploadTexture( textureProperties, texture, slot );
    			return;
    		}
    		state.activeTexture( 33984 + slot );
    		state.bindTexture( 32879, textureProperties.__webglTexture );
    	}
    	function setTextureCube( texture, slot ) {
    		if ( texture.image.length !== 6 ) return;
    		const textureProperties = properties.get( texture );
    		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
    			initTexture( textureProperties, texture );
    			state.activeTexture( 33984 + slot );
    			state.bindTexture( 34067, textureProperties.__webglTexture );
    			_gl.pixelStorei( 37440, texture.flipY );
    			const isCompressed = ( texture && ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture ) );
    			const isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );
    			const cubeImage = [];
    			for ( let i = 0; i < 6; i ++ ) {
    				if ( ! isCompressed && ! isDataTexture ) {
    					cubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize );
    				} else {
    					cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];
    				}
    			}
    			const image = cubeImage[ 0 ],
    				supportsMips = isPowerOfTwo( image ) || isWebGL2,
    				glFormat = utils.convert( texture.format ),
    				glType = utils.convert( texture.type ),
    				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );
    			setTextureParameters( 34067, texture, supportsMips );
    			let mipmaps;
    			if ( isCompressed ) {
    				for ( let i = 0; i < 6; i ++ ) {
    					mipmaps = cubeImage[ i ].mipmaps;
    					for ( let j = 0; j < mipmaps.length; j ++ ) {
    						const mipmap = mipmaps[ j ];
    						if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
    							if ( glFormat !== null ) {
    								state.compressedTexImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
    							} else {
    								console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );
    							}
    						} else {
    							state.texImage2D( 34069 + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
    						}
    					}
    				}
    				textureProperties.__maxMipLevel = mipmaps.length - 1;
    			} else {
    				mipmaps = texture.mipmaps;
    				for ( let i = 0; i < 6; i ++ ) {
    					if ( isDataTexture ) {
    						state.texImage2D( 34069 + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );
    						for ( let j = 0; j < mipmaps.length; j ++ ) {
    							const mipmap = mipmaps[ j ];
    							const mipmapImage = mipmap.image[ i ].image;
    							state.texImage2D( 34069 + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );
    						}
    					} else {
    						state.texImage2D( 34069 + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );
    						for ( let j = 0; j < mipmaps.length; j ++ ) {
    							const mipmap = mipmaps[ j ];
    							state.texImage2D( 34069 + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );
    						}
    					}
    				}
    				textureProperties.__maxMipLevel = mipmaps.length;
    			}
    			if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {
    				generateMipmap( 34067, texture, image.width, image.height );
    			}
    			textureProperties.__version = texture.version;
    			if ( texture.onUpdate ) texture.onUpdate( texture );
    		} else {
    			state.activeTexture( 33984 + slot );
    			state.bindTexture( 34067, textureProperties.__webglTexture );
    		}
    	}
    	function setTextureCubeDynamic( texture, slot ) {
    		state.activeTexture( 33984 + slot );
    		state.bindTexture( 34067, properties.get( texture ).__webglTexture );
    	}
    	const wrappingToGL = {
    		[ RepeatWrapping ]: 10497,
    		[ ClampToEdgeWrapping ]: 33071,
    		[ MirroredRepeatWrapping ]: 33648
    	};
    	const filterToGL = {
    		[ NearestFilter ]: 9728,
    		[ NearestMipmapNearestFilter ]: 9984,
    		[ NearestMipmapLinearFilter ]: 9986,
    		[ LinearFilter ]: 9729,
    		[ LinearMipmapNearestFilter ]: 9985,
    		[ LinearMipmapLinearFilter ]: 9987
    	};
    	function setTextureParameters( textureType, texture, supportsMips ) {
    		if ( supportsMips ) {
    			_gl.texParameteri( textureType, 10242, wrappingToGL[ texture.wrapS ] );
    			_gl.texParameteri( textureType, 10243, wrappingToGL[ texture.wrapT ] );
    			if ( textureType === 32879 || textureType === 35866 ) {
    				_gl.texParameteri( textureType, 32882, wrappingToGL[ texture.wrapR ] );
    			}
    			_gl.texParameteri( textureType, 10240, filterToGL[ texture.magFilter ] );
    			_gl.texParameteri( textureType, 10241, filterToGL[ texture.minFilter ] );
    		} else {
    			_gl.texParameteri( textureType, 10242, 33071 );
    			_gl.texParameteri( textureType, 10243, 33071 );
    			if ( textureType === 32879 || textureType === 35866 ) {
    				_gl.texParameteri( textureType, 32882, 33071 );
    			}
    			if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {
    				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );
    			}
    			_gl.texParameteri( textureType, 10240, filterFallback( texture.magFilter ) );
    			_gl.texParameteri( textureType, 10241, filterFallback( texture.minFilter ) );
    			if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {
    				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );
    			}
    		}
    		const extension = extensions.get( 'EXT_texture_filter_anisotropic' );
    		if ( extension ) {
    			if ( texture.type === FloatType && extensions.get( 'OES_texture_float_linear' ) === null ) return;
    			if ( texture.type === HalfFloatType && ( isWebGL2 || extensions.get( 'OES_texture_half_float_linear' ) ) === null ) return;
    			if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {
    				_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
    				properties.get( texture ).__currentAnisotropy = texture.anisotropy;
    			}
    		}
    	}
    	function initTexture( textureProperties, texture ) {
    		if ( textureProperties.__webglInit === undefined ) {
    			textureProperties.__webglInit = true;
    			texture.addEventListener( 'dispose', onTextureDispose );
    			textureProperties.__webglTexture = _gl.createTexture();
    			info.memory.textures ++;
    		}
    	}
    	function uploadTexture( textureProperties, texture, slot ) {
    		let textureType = 3553;
    		if ( texture.isDataTexture2DArray ) textureType = 35866;
    		if ( texture.isDataTexture3D ) textureType = 32879;
    		initTexture( textureProperties, texture );
    		state.activeTexture( 33984 + slot );
    		state.bindTexture( textureType, textureProperties.__webglTexture );
    		_gl.pixelStorei( 37440, texture.flipY );
    		_gl.pixelStorei( 37441, texture.premultiplyAlpha );
    		_gl.pixelStorei( 3317, texture.unpackAlignment );
    		const needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo( texture.image ) === false;
    		const image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize );
    		const supportsMips = isPowerOfTwo( image ) || isWebGL2,
    			glFormat = utils.convert( texture.format );
    		let glType = utils.convert( texture.type ),
    			glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType );
    		setTextureParameters( textureType, texture, supportsMips );
    		let mipmap;
    		const mipmaps = texture.mipmaps;
    		if ( texture.isDepthTexture ) {
    			glInternalFormat = 6402;
    			if ( isWebGL2 ) {
    				if ( texture.type === FloatType ) {
    					glInternalFormat = 36012;
    				} else if ( texture.type === UnsignedIntType ) {
    					glInternalFormat = 33190;
    				} else if ( texture.type === UnsignedInt248Type ) {
    					glInternalFormat = 35056;
    				} else {
    					glInternalFormat = 33189;
    				}
    			} else {
    				if ( texture.type === FloatType ) {
    					console.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' );
    				}
    			}
    			if ( texture.format === DepthFormat && glInternalFormat === 6402 ) {
    				if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {
    					console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );
    					texture.type = UnsignedShortType;
    					glType = utils.convert( texture.type );
    				}
    			}
    			if ( texture.format === DepthStencilFormat && glInternalFormat === 6402 ) {
    				glInternalFormat = 34041;
    				if ( texture.type !== UnsignedInt248Type ) {
    					console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
    					texture.type = UnsignedInt248Type;
    					glType = utils.convert( texture.type );
    				}
    			}
    			state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );
    		} else if ( texture.isDataTexture ) {
    			if ( mipmaps.length > 0 && supportsMips ) {
    				for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
    					mipmap = mipmaps[ i ];
    					state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
    				}
    				texture.generateMipmaps = false;
    				textureProperties.__maxMipLevel = mipmaps.length - 1;
    			} else {
    				state.texImage2D( 3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );
    				textureProperties.__maxMipLevel = 0;
    			}
    		} else if ( texture.isCompressedTexture ) {
    			for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
    				mipmap = mipmaps[ i ];
    				if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
    					if ( glFormat !== null ) {
    						state.compressedTexImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
    					} else {
    						console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );
    					}
    				} else {
    					state.texImage2D( 3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
    				}
    			}
    			textureProperties.__maxMipLevel = mipmaps.length - 1;
    		} else if ( texture.isDataTexture2DArray ) {
    			state.texImage3D( 35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
    			textureProperties.__maxMipLevel = 0;
    		} else if ( texture.isDataTexture3D ) {
    			state.texImage3D( 32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
    			textureProperties.__maxMipLevel = 0;
    		} else {
    			if ( mipmaps.length > 0 && supportsMips ) {
    				for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
    					mipmap = mipmaps[ i ];
    					state.texImage2D( 3553, i, glInternalFormat, glFormat, glType, mipmap );
    				}
    				texture.generateMipmaps = false;
    				textureProperties.__maxMipLevel = mipmaps.length - 1;
    			} else {
    				state.texImage2D( 3553, 0, glInternalFormat, glFormat, glType, image );
    				textureProperties.__maxMipLevel = 0;
    			}
    		}
    		if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {
    			generateMipmap( textureType, texture, image.width, image.height );
    		}
    		textureProperties.__version = texture.version;
    		if ( texture.onUpdate ) texture.onUpdate( texture );
    	}
    	function setupFrameBufferTexture( framebuffer, renderTarget, attachment, textureTarget ) {
    		const glFormat = utils.convert( renderTarget.texture.format );
    		const glType = utils.convert( renderTarget.texture.type );
    		const glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );
    		state.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );
    		_gl.bindFramebuffer( 36160, framebuffer );
    		_gl.framebufferTexture2D( 36160, attachment, textureTarget, properties.get( renderTarget.texture ).__webglTexture, 0 );
    		_gl.bindFramebuffer( 36160, null );
    	}
    	function setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {
    		_gl.bindRenderbuffer( 36161, renderbuffer );
    		if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {
    			let glInternalFormat = 33189;
    			if ( isMultisample ) {
    				const depthTexture = renderTarget.depthTexture;
    				if ( depthTexture && depthTexture.isDepthTexture ) {
    					if ( depthTexture.type === FloatType ) {
    						glInternalFormat = 36012;
    					} else if ( depthTexture.type === UnsignedIntType ) {
    						glInternalFormat = 33190;
    					}
    				}
    				const samples = getRenderTargetSamples( renderTarget );
    				_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );
    			} else {
    				_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );
    			}
    			_gl.framebufferRenderbuffer( 36160, 36096, 36161, renderbuffer );
    		} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {
    			if ( isMultisample ) {
    				const samples = getRenderTargetSamples( renderTarget );
    				_gl.renderbufferStorageMultisample( 36161, samples, 35056, renderTarget.width, renderTarget.height );
    			} else {
    				_gl.renderbufferStorage( 36161, 34041, renderTarget.width, renderTarget.height );
    			}
    			_gl.framebufferRenderbuffer( 36160, 33306, 36161, renderbuffer );
    		} else {
    			const glFormat = utils.convert( renderTarget.texture.format );
    			const glType = utils.convert( renderTarget.texture.type );
    			const glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );
    			if ( isMultisample ) {
    				const samples = getRenderTargetSamples( renderTarget );
    				_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );
    			} else {
    				_gl.renderbufferStorage( 36161, glInternalFormat, renderTarget.width, renderTarget.height );
    			}
    		}
    		_gl.bindRenderbuffer( 36161, null );
    	}
    	function setupDepthTexture( framebuffer, renderTarget ) {
    		const isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );
    		if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );
    		_gl.bindFramebuffer( 36160, framebuffer );
    		if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {
    			throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );
    		}
    		if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
    				renderTarget.depthTexture.image.width !== renderTarget.width ||
    				renderTarget.depthTexture.image.height !== renderTarget.height ) {
    			renderTarget.depthTexture.image.width = renderTarget.width;
    			renderTarget.depthTexture.image.height = renderTarget.height;
    			renderTarget.depthTexture.needsUpdate = true;
    		}
    		setTexture2D( renderTarget.depthTexture, 0 );
    		const webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
    		if ( renderTarget.depthTexture.format === DepthFormat ) {
    			_gl.framebufferTexture2D( 36160, 36096, 3553, webglDepthTexture, 0 );
    		} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
    			_gl.framebufferTexture2D( 36160, 33306, 3553, webglDepthTexture, 0 );
    		} else {
    			throw new Error( 'Unknown depthTexture format' );
    		}
    	}
    	function setupDepthRenderbuffer( renderTarget ) {
    		const renderTargetProperties = properties.get( renderTarget );
    		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
    		if ( renderTarget.depthTexture ) {
    			if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );
    			setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );
    		} else {
    			if ( isCube ) {
    				renderTargetProperties.__webglDepthbuffer = [];
    				for ( let i = 0; i < 6; i ++ ) {
    					_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer[ i ] );
    					renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
    					setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );
    				}
    			} else {
    				_gl.bindFramebuffer( 36160, renderTargetProperties.__webglFramebuffer );
    				renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
    				setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );
    			}
    		}
    		_gl.bindFramebuffer( 36160, null );
    	}
    	function setupRenderTarget( renderTarget ) {
    		const renderTargetProperties = properties.get( renderTarget );
    		const textureProperties = properties.get( renderTarget.texture );
    		renderTarget.addEventListener( 'dispose', onRenderTargetDispose );
    		textureProperties.__webglTexture = _gl.createTexture();
    		info.memory.textures ++;
    		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
    		const isMultisample = ( renderTarget.isWebGLMultisampleRenderTarget === true );
    		const supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;
    		if ( isWebGL2 && renderTarget.texture.format === RGBFormat && ( renderTarget.texture.type === FloatType || renderTarget.texture.type === HalfFloatType ) ) {
    			renderTarget.texture.format = RGBAFormat;
    			console.warn( 'THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.' );
    		}
    		if ( isCube ) {
    			renderTargetProperties.__webglFramebuffer = [];
    			for ( let i = 0; i < 6; i ++ ) {
    				renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();
    			}
    		} else {
    			renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
    			if ( isMultisample ) {
    				if ( isWebGL2 ) {
    					renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
    					renderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();
    					_gl.bindRenderbuffer( 36161, renderTargetProperties.__webglColorRenderbuffer );
    					const glFormat = utils.convert( renderTarget.texture.format );
    					const glType = utils.convert( renderTarget.texture.type );
    					const glInternalFormat = getInternalFormat( renderTarget.texture.internalFormat, glFormat, glType );
    					const samples = getRenderTargetSamples( renderTarget );
    					_gl.renderbufferStorageMultisample( 36161, samples, glInternalFormat, renderTarget.width, renderTarget.height );
    					_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
    					_gl.framebufferRenderbuffer( 36160, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer );
    					_gl.bindRenderbuffer( 36161, null );
    					if ( renderTarget.depthBuffer ) {
    						renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
    						setupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );
    					}
    					_gl.bindFramebuffer( 36160, null );
    				} else {
    					console.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );
    				}
    			}
    		}
    		if ( isCube ) {
    			state.bindTexture( 34067, textureProperties.__webglTexture );
    			setTextureParameters( 34067, renderTarget.texture, supportsMips );
    			for ( let i = 0; i < 6; i ++ ) {
    				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, 36064, 34069 + i );
    			}
    			if ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {
    				generateMipmap( 34067, renderTarget.texture, renderTarget.width, renderTarget.height );
    			}
    			state.bindTexture( 34067, null );
    		} else {
    			state.bindTexture( 3553, textureProperties.__webglTexture );
    			setTextureParameters( 3553, renderTarget.texture, supportsMips );
    			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, 36064, 3553 );
    			if ( textureNeedsGenerateMipmaps( renderTarget.texture, supportsMips ) ) {
    				generateMipmap( 3553, renderTarget.texture, renderTarget.width, renderTarget.height );
    			}
    			state.bindTexture( 3553, null );
    		}
    		if ( renderTarget.depthBuffer ) {
    			setupDepthRenderbuffer( renderTarget );
    		}
    	}
    	function updateRenderTargetMipmap( renderTarget ) {
    		const texture = renderTarget.texture;
    		const supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2;
    		if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) {
    			const target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;
    			const webglTexture = properties.get( texture ).__webglTexture;
    			state.bindTexture( target, webglTexture );
    			generateMipmap( target, texture, renderTarget.width, renderTarget.height );
    			state.bindTexture( target, null );
    		}
    	}
    	function updateMultisampleRenderTarget( renderTarget ) {
    		if ( renderTarget.isWebGLMultisampleRenderTarget ) {
    			if ( isWebGL2 ) {
    				const renderTargetProperties = properties.get( renderTarget );
    				_gl.bindFramebuffer( 36008, renderTargetProperties.__webglMultisampledFramebuffer );
    				_gl.bindFramebuffer( 36009, renderTargetProperties.__webglFramebuffer );
    				const width = renderTarget.width;
    				const height = renderTarget.height;
    				let mask = 16384;
    				if ( renderTarget.depthBuffer ) mask |= 256;
    				if ( renderTarget.stencilBuffer ) mask |= 1024;
    				_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, 9728 );
    				_gl.bindFramebuffer( 36160, renderTargetProperties.__webglMultisampledFramebuffer );
    			} else {
    				console.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' );
    			}
    		}
    	}
    	function getRenderTargetSamples( renderTarget ) {
    		return ( isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ) ?
    			Math.min( maxSamples, renderTarget.samples ) : 0;
    	}
    	function updateVideoTexture( texture ) {
    		const frame = info.render.frame;
    		if ( _videoTextures.get( texture ) !== frame ) {
    			_videoTextures.set( texture, frame );
    			texture.update();
    		}
    	}
    	let warnedTexture2D = false;
    	let warnedTextureCube = false;
    	function safeSetTexture2D( texture, slot ) {
    		if ( texture && texture.isWebGLRenderTarget ) {
    			if ( warnedTexture2D === false ) {
    				console.warn( "THREE.WebGLTextures.safeSetTexture2D: don't use render targets as textures. Use their .texture property instead." );
    				warnedTexture2D = true;
    			}
    			texture = texture.texture;
    		}
    		setTexture2D( texture, slot );
    	}
    	function safeSetTextureCube( texture, slot ) {
    		if ( texture && texture.isWebGLCubeRenderTarget ) {
    			if ( warnedTextureCube === false ) {
    				console.warn( "THREE.WebGLTextures.safeSetTextureCube: don't use cube render targets as textures. Use their .texture property instead." );
    				warnedTextureCube = true;
    			}
    			texture = texture.texture;
    		}
    		if ( ( texture && texture.isCubeTexture ) ||
    			( Array.isArray( texture.image ) && texture.image.length === 6 ) ) {
    			setTextureCube( texture, slot );
    		} else {
    			setTextureCubeDynamic( texture, slot );
    		}
    	}
    	this.allocateTextureUnit = allocateTextureUnit;
    	this.resetTextureUnits = resetTextureUnits;
    	this.setTexture2D = setTexture2D;
    	this.setTexture2DArray = setTexture2DArray;
    	this.setTexture3D = setTexture3D;
    	this.setTextureCube = setTextureCube;
    	this.setTextureCubeDynamic = setTextureCubeDynamic;
    	this.setupRenderTarget = setupRenderTarget;
    	this.updateRenderTargetMipmap = updateRenderTargetMipmap;
    	this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
    	this.safeSetTexture2D = safeSetTexture2D;
    	this.safeSetTextureCube = safeSetTextureCube;
    }
    function WebGLUtils( gl, extensions, capabilities ) {
    	const isWebGL2 = capabilities.isWebGL2;
    	function convert( p ) {
    		let extension;
    		if ( p === UnsignedByteType ) return 5121;
    		if ( p === UnsignedShort4444Type ) return 32819;
    		if ( p === UnsignedShort5551Type ) return 32820;
    		if ( p === UnsignedShort565Type ) return 33635;
    		if ( p === ByteType ) return 5120;
    		if ( p === ShortType ) return 5122;
    		if ( p === UnsignedShortType ) return 5123;
    		if ( p === IntType ) return 5124;
    		if ( p === UnsignedIntType ) return 5125;
    		if ( p === FloatType ) return 5126;
    		if ( p === HalfFloatType ) {
    			if ( isWebGL2 ) return 5131;
    			extension = extensions.get( 'OES_texture_half_float' );
    			if ( extension !== null ) {
    				return extension.HALF_FLOAT_OES;
    			} else {
    				return null;
    			}
    		}
    		if ( p === AlphaFormat ) return 6406;
    		if ( p === RGBFormat ) return 6407;
    		if ( p === RGBAFormat ) return 6408;
    		if ( p === LuminanceFormat ) return 6409;
    		if ( p === LuminanceAlphaFormat ) return 6410;
    		if ( p === DepthFormat ) return 6402;
    		if ( p === DepthStencilFormat ) return 34041;
    		if ( p === RedFormat ) return 6403;
    		if ( p === RedIntegerFormat ) return 36244;
    		if ( p === RGFormat ) return 33319;
    		if ( p === RGIntegerFormat ) return 33320;
    		if ( p === RGBIntegerFormat ) return 36248;
    		if ( p === RGBAIntegerFormat ) return 36249;
    		if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format ||
    			p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {
    			extension = extensions.get( 'WEBGL_compressed_texture_s3tc' );
    			if ( extension !== null ) {
    				if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
    				if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
    				if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
    				if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
    			} else {
    				return null;
    			}
    		}
    		if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format ||
    			p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {
    			extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );
    			if ( extension !== null ) {
    				if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
    				if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
    				if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
    				if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
    			} else {
    				return null;
    			}
    		}
    		if ( p === RGB_ETC1_Format ) {
    			extension = extensions.get( 'WEBGL_compressed_texture_etc1' );
    			if ( extension !== null ) {
    				return extension.COMPRESSED_RGB_ETC1_WEBGL;
    			} else {
    				return null;
    			}
    		}
    		if ( p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {
    			extension = extensions.get( 'WEBGL_compressed_texture_etc' );
    			if ( extension !== null ) {
    				if ( p === RGB_ETC2_Format ) return extension.COMPRESSED_RGB8_ETC2;
    				if ( p === RGBA_ETC2_EAC_Format ) return extension.COMPRESSED_RGBA8_ETC2_EAC;
    			}
    		}
    		if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
    			p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
    			p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
    			p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
    			p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ||
    			p === SRGB8_ALPHA8_ASTC_4x4_Format || p === SRGB8_ALPHA8_ASTC_5x4_Format || p === SRGB8_ALPHA8_ASTC_5x5_Format ||
    			p === SRGB8_ALPHA8_ASTC_6x5_Format || p === SRGB8_ALPHA8_ASTC_6x6_Format || p === SRGB8_ALPHA8_ASTC_8x5_Format ||
    			p === SRGB8_ALPHA8_ASTC_8x6_Format || p === SRGB8_ALPHA8_ASTC_8x8_Format || p === SRGB8_ALPHA8_ASTC_10x5_Format ||
    			p === SRGB8_ALPHA8_ASTC_10x6_Format || p === SRGB8_ALPHA8_ASTC_10x8_Format || p === SRGB8_ALPHA8_ASTC_10x10_Format ||
    			p === SRGB8_ALPHA8_ASTC_12x10_Format || p === SRGB8_ALPHA8_ASTC_12x12_Format ) {
    			extension = extensions.get( 'WEBGL_compressed_texture_astc' );
    			if ( extension !== null ) {
    				return p;
    			} else {
    				return null;
    			}
    		}
    		if ( p === RGBA_BPTC_Format ) {
    			extension = extensions.get( 'EXT_texture_compression_bptc' );
    			if ( extension !== null ) {
    				return p;
    			} else {
    				return null;
    			}
    		}
    		if ( p === UnsignedInt248Type ) {
    			if ( isWebGL2 ) return 34042;
    			extension = extensions.get( 'WEBGL_depth_texture' );
    			if ( extension !== null ) {
    				return extension.UNSIGNED_INT_24_8_WEBGL;
    			} else {
    				return null;
    			}
    		}
    	}
    	return { convert: convert };
    }
    function ArrayCamera( array ) {
    	PerspectiveCamera.call( this );
    	this.cameras = array || [];
    }
    ArrayCamera.prototype = Object.assign( Object.create( PerspectiveCamera.prototype ), {
    	constructor: ArrayCamera,
    	isArrayCamera: true
    } );
    function Group() {
    	Object3D.call( this );
    	this.type = 'Group';
    }
    Group.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Group,
    	isGroup: true
    } );
    function WebXRController() {
    	this._targetRay = null;
    	this._grip = null;
    	this._hand = null;
    }
    Object.assign( WebXRController.prototype, {
    	constructor: WebXRController,
    	getHandSpace: function () {
    		if ( this._hand === null ) {
    			this._hand = new Group();
    			this._hand.matrixAutoUpdate = false;
    			this._hand.visible = false;
    			this._hand.joints = [];
    			this._hand.inputState = { pinching: false };
    			if ( window.XRHand ) {
    				for ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {
    					const joint = new Group();
    					joint.matrixAutoUpdate = false;
    					joint.visible = false;
    					this._hand.joints.push( joint );
    					this._hand.add( joint );
    				}
    			}
    		}
    		return this._hand;
    	},
    	getTargetRaySpace: function () {
    		if ( this._targetRay === null ) {
    			this._targetRay = new Group();
    			this._targetRay.matrixAutoUpdate = false;
    			this._targetRay.visible = false;
    		}
    		return this._targetRay;
    	},
    	getGripSpace: function () {
    		if ( this._grip === null ) {
    			this._grip = new Group();
    			this._grip.matrixAutoUpdate = false;
    			this._grip.visible = false;
    		}
    		return this._grip;
    	},
    	dispatchEvent: function ( event ) {
    		if ( this._targetRay !== null ) {
    			this._targetRay.dispatchEvent( event );
    		}
    		if ( this._grip !== null ) {
    			this._grip.dispatchEvent( event );
    		}
    		if ( this._hand !== null ) {
    			this._hand.dispatchEvent( event );
    		}
    		return this;
    	},
    	disconnect: function ( inputSource ) {
    		this.dispatchEvent( { type: 'disconnected', data: inputSource } );
    		if ( this._targetRay !== null ) {
    			this._targetRay.visible = false;
    		}
    		if ( this._grip !== null ) {
    			this._grip.visible = false;
    		}
    		if ( this._hand !== null ) {
    			this._hand.visible = false;
    		}
    		return this;
    	},
    	update: function ( inputSource, frame, referenceSpace ) {
    		let inputPose = null;
    		let gripPose = null;
    		let handPose = null;
    		const targetRay = this._targetRay;
    		const grip = this._grip;
    		const hand = this._hand;
    		if ( inputSource ) {
    			if ( hand && inputSource.hand ) {
    				handPose = true;
    				for ( let i = 0; i <= window.XRHand.LITTLE_PHALANX_TIP; i ++ ) {
    					if ( inputSource.hand[ i ] ) {
    						const jointPose = frame.getJointPose( inputSource.hand[ i ], referenceSpace );
    						const joint = hand.joints[ i ];
    						if ( jointPose !== null ) {
    							joint.matrix.fromArray( jointPose.transform.matrix );
    							joint.matrix.decompose( joint.position, joint.rotation, joint.scale );
    							joint.jointRadius = jointPose.radius;
    						}
    						joint.visible = jointPose !== null;
    						const indexTip = hand.joints[ window.XRHand.INDEX_PHALANX_TIP ];
    						const thumbTip = hand.joints[ window.XRHand.THUMB_PHALANX_TIP ];
    						const distance = indexTip.position.distanceTo( thumbTip.position );
    						const distanceToPinch = 0.02;
    						const threshold = 0.005;
    						if ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {
    							hand.inputState.pinching = false;
    							this.dispatchEvent( {
    								type: "pinchend",
    								handedness: inputSource.handedness,
    								target: this
    							} );
    						} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {
    							hand.inputState.pinching = true;
    							this.dispatchEvent( {
    								type: "pinchstart",
    								handedness: inputSource.handedness,
    								target: this
    							} );
    						}
    					}
    				}
    			} else {
    				if ( targetRay !== null ) {
    					inputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );
    					if ( inputPose !== null ) {
    						targetRay.matrix.fromArray( inputPose.transform.matrix );
    						targetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );
    					}
    				}
    				if ( grip !== null && inputSource.gripSpace ) {
    					gripPose = frame.getPose( inputSource.gripSpace, referenceSpace );
    					if ( gripPose !== null ) {
    						grip.matrix.fromArray( gripPose.transform.matrix );
    						grip.matrix.decompose( grip.position, grip.rotation, grip.scale );
    					}
    				}
    			}
    		}
    		if ( targetRay !== null ) {
    			targetRay.visible = ( inputPose !== null );
    		}
    		if ( grip !== null ) {
    			grip.visible = ( gripPose !== null );
    		}
    		if ( hand !== null ) {
    			hand.visible = ( handPose !== null );
    		}
    		return this;
    	}
    } );
    function WebXRManager( renderer, gl ) {
    	const scope = this;
    	let session = null;
    	let framebufferScaleFactor = 1.0;
    	let referenceSpace = null;
    	let referenceSpaceType = 'local-floor';
    	let pose = null;
    	const controllers = [];
    	const inputSourcesMap = new Map();
    	const cameraL = new PerspectiveCamera();
    	cameraL.layers.enable( 1 );
    	cameraL.viewport = new Vector4();
    	const cameraR = new PerspectiveCamera();
    	cameraR.layers.enable( 2 );
    	cameraR.viewport = new Vector4();
    	const cameras = [ cameraL, cameraR ];
    	const cameraVR = new ArrayCamera();
    	cameraVR.layers.enable( 1 );
    	cameraVR.layers.enable( 2 );
    	let _currentDepthNear = null;
    	let _currentDepthFar = null;
    	this.enabled = false;
    	this.isPresenting = false;
    	this.getController = function ( index ) {
    		let controller = controllers[ index ];
    		if ( controller === undefined ) {
    			controller = new WebXRController();
    			controllers[ index ] = controller;
    		}
    		return controller.getTargetRaySpace();
    	};
    	this.getControllerGrip = function ( index ) {
    		let controller = controllers[ index ];
    		if ( controller === undefined ) {
    			controller = new WebXRController();
    			controllers[ index ] = controller;
    		}
    		return controller.getGripSpace();
    	};
    	this.getHand = function ( index ) {
    		let controller = controllers[ index ];
    		if ( controller === undefined ) {
    			controller = new WebXRController();
    			controllers[ index ] = controller;
    		}
    		return controller.getHandSpace();
    	};
    	function onSessionEvent( event ) {
    		const controller = inputSourcesMap.get( event.inputSource );
    		if ( controller ) {
    			controller.dispatchEvent( { type: event.type } );
    		}
    	}
    	function onSessionEnd() {
    		inputSourcesMap.forEach( function ( controller, inputSource ) {
    			controller.disconnect( inputSource );
    		} );
    		inputSourcesMap.clear();
    		renderer.setFramebuffer( null );
    		renderer.setRenderTarget( renderer.getRenderTarget() );
    		animation.stop();
    		scope.isPresenting = false;
    		scope.dispatchEvent( { type: 'sessionend' } );
    	}
    	function onRequestReferenceSpace( value ) {
    		referenceSpace = value;
    		animation.setContext( session );
    		animation.start();
    		scope.isPresenting = true;
    		scope.dispatchEvent( { type: 'sessionstart' } );
    	}
    	this.setFramebufferScaleFactor = function ( value ) {
    		framebufferScaleFactor = value;
    		if ( scope.isPresenting === true ) {
    			console.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );
    		}
    	};
    	this.setReferenceSpaceType = function ( value ) {
    		referenceSpaceType = value;
    		if ( scope.isPresenting === true ) {
    			console.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );
    		}
    	};
    	this.getReferenceSpace = function () {
    		return referenceSpace;
    	};
    	this.getSession = function () {
    		return session;
    	};
    	this.setSession = function ( value ) {
    		session = value;
    		if ( session !== null ) {
    			session.addEventListener( 'select', onSessionEvent );
    			session.addEventListener( 'selectstart', onSessionEvent );
    			session.addEventListener( 'selectend', onSessionEvent );
    			session.addEventListener( 'squeeze', onSessionEvent );
    			session.addEventListener( 'squeezestart', onSessionEvent );
    			session.addEventListener( 'squeezeend', onSessionEvent );
    			session.addEventListener( 'end', onSessionEnd );
    			const attributes = gl.getContextAttributes();
    			if ( attributes.xrCompatible !== true ) {
    				gl.makeXRCompatible();
    			}
    			const layerInit = {
    				antialias: attributes.antialias,
    				alpha: attributes.alpha,
    				depth: attributes.depth,
    				stencil: attributes.stencil,
    				framebufferScaleFactor: framebufferScaleFactor
    			};
    			const baseLayer = new XRWebGLLayer( session, gl, layerInit );
    			session.updateRenderState( { baseLayer: baseLayer } );
    			session.requestReferenceSpace( referenceSpaceType ).then( onRequestReferenceSpace );
    			session.addEventListener( 'inputsourceschange', updateInputSources );
    		}
    	};
    	function updateInputSources( event ) {
    		const inputSources = session.inputSources;
    		for ( let i = 0; i < controllers.length; i ++ ) {
    			inputSourcesMap.set( inputSources[ i ], controllers[ i ] );
    		}
    		for ( let i = 0; i < event.removed.length; i ++ ) {
    			const inputSource = event.removed[ i ];
    			const controller = inputSourcesMap.get( inputSource );
    			if ( controller ) {
    				controller.dispatchEvent( { type: 'disconnected', data: inputSource } );
    				inputSourcesMap.delete( inputSource );
    			}
    		}
    		for ( let i = 0; i < event.added.length; i ++ ) {
    			const inputSource = event.added[ i ];
    			const controller = inputSourcesMap.get( inputSource );
    			if ( controller ) {
    				controller.dispatchEvent( { type: 'connected', data: inputSource } );
    			}
    		}
    	}
    	const cameraLPos = new Vector3();
    	const cameraRPos = new Vector3();
    	function setProjectionFromUnion( camera, cameraL, cameraR ) {
    		cameraLPos.setFromMatrixPosition( cameraL.matrixWorld );
    		cameraRPos.setFromMatrixPosition( cameraR.matrixWorld );
    		const ipd = cameraLPos.distanceTo( cameraRPos );
    		const projL = cameraL.projectionMatrix.elements;
    		const projR = cameraR.projectionMatrix.elements;
    		const near = projL[ 14 ] / ( projL[ 10 ] - 1 );
    		const far = projL[ 14 ] / ( projL[ 10 ] + 1 );
    		const topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];
    		const bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];
    		const leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];
    		const rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];
    		const left = near * leftFov;
    		const right = near * rightFov;
    		const zOffset = ipd / ( - leftFov + rightFov );
    		const xOffset = zOffset * - leftFov;
    		cameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );
    		camera.translateX( xOffset );
    		camera.translateZ( zOffset );
    		camera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );
    		camera.matrixWorldInverse.getInverse( camera.matrixWorld );
    		const near2 = near + zOffset;
    		const far2 = far + zOffset;
    		const left2 = left - xOffset;
    		const right2 = right + ( ipd - xOffset );
    		const top2 = topFov * far / far2 * near2;
    		const bottom2 = bottomFov * far / far2 * near2;
    		camera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );
    	}
    	function updateCamera( camera, parent ) {
    		if ( parent === null ) {
    			camera.matrixWorld.copy( camera.matrix );
    		} else {
    			camera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );
    		}
    		camera.matrixWorldInverse.getInverse( camera.matrixWorld );
    	}
    	this.getCamera = function ( camera ) {
    		cameraVR.near = cameraR.near = cameraL.near = camera.near;
    		cameraVR.far = cameraR.far = cameraL.far = camera.far;
    		if ( _currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far ) {
    			session.updateRenderState( {
    				depthNear: cameraVR.near,
    				depthFar: cameraVR.far
    			} );
    			_currentDepthNear = cameraVR.near;
    			_currentDepthFar = cameraVR.far;
    		}
    		const parent = camera.parent;
    		const cameras = cameraVR.cameras;
    		updateCamera( cameraVR, parent );
    		for ( let i = 0; i < cameras.length; i ++ ) {
    			updateCamera( cameras[ i ], parent );
    		}
    		camera.matrixWorld.copy( cameraVR.matrixWorld );
    		const children = camera.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			children[ i ].updateMatrixWorld( true );
    		}
    		if ( cameras.length === 2 ) {
    			setProjectionFromUnion( cameraVR, cameraL, cameraR );
    		} else {
    			cameraVR.projectionMatrix.copy( cameraL.projectionMatrix );
    		}
    		return cameraVR;
    	};
    	let onAnimationFrameCallback = null;
    	function onAnimationFrame( time, frame ) {
    		pose = frame.getViewerPose( referenceSpace );
    		if ( pose !== null ) {
    			const views = pose.views;
    			const baseLayer = session.renderState.baseLayer;
    			renderer.setFramebuffer( baseLayer.framebuffer );
    			let cameraVRNeedsUpdate = false;
    			if ( views.length !== cameraVR.cameras.length ) {
    				cameraVR.cameras.length = 0;
    				cameraVRNeedsUpdate = true;
    			}
    			for ( let i = 0; i < views.length; i ++ ) {
    				const view = views[ i ];
    				const viewport = baseLayer.getViewport( view );
    				const camera = cameras[ i ];
    				camera.matrix.fromArray( view.transform.matrix );
    				camera.projectionMatrix.fromArray( view.projectionMatrix );
    				camera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );
    				if ( i === 0 ) {
    					cameraVR.matrix.copy( camera.matrix );
    				}
    				if ( cameraVRNeedsUpdate === true ) {
    					cameraVR.cameras.push( camera );
    				}
    			}
    		}
    		const inputSources = session.inputSources;
    		for ( let i = 0; i < controllers.length; i ++ ) {
    			const controller = controllers[ i ];
    			const inputSource = inputSources[ i ];
    			controller.update( inputSource, frame, referenceSpace );
    		}
    		if ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );
    	}
    	const animation = new WebGLAnimation();
    	animation.setAnimationLoop( onAnimationFrame );
    	this.setAnimationLoop = function ( callback ) {
    		onAnimationFrameCallback = callback;
    	};
    	this.dispose = function () {};
    }
    Object.assign( WebXRManager.prototype, EventDispatcher.prototype );
    function WebGLMaterials( properties ) {
    	function refreshFogUniforms( uniforms, fog ) {
    		uniforms.fogColor.value.copy( fog.color );
    		if ( fog.isFog ) {
    			uniforms.fogNear.value = fog.near;
    			uniforms.fogFar.value = fog.far;
    		} else if ( fog.isFogExp2 ) {
    			uniforms.fogDensity.value = fog.density;
    		}
    	}
    	function refreshMaterialUniforms( uniforms, material, pixelRatio, height ) {
    		if ( material.isMeshBasicMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    		} else if ( material.isMeshLambertMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsLambert( uniforms, material );
    		} else if ( material.isMeshToonMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsToon( uniforms, material );
    		} else if ( material.isMeshPhongMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsPhong( uniforms, material );
    		} else if ( material.isMeshStandardMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			if ( material.isMeshPhysicalMaterial ) {
    				refreshUniformsPhysical( uniforms, material );
    			} else {
    				refreshUniformsStandard( uniforms, material );
    			}
    		} else if ( material.isMeshMatcapMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsMatcap( uniforms, material );
    		} else if ( material.isMeshDepthMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsDepth( uniforms, material );
    		} else if ( material.isMeshDistanceMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsDistance( uniforms, material );
    		} else if ( material.isMeshNormalMaterial ) {
    			refreshUniformsCommon( uniforms, material );
    			refreshUniformsNormal( uniforms, material );
    		} else if ( material.isLineBasicMaterial ) {
    			refreshUniformsLine( uniforms, material );
    			if ( material.isLineDashedMaterial ) {
    				refreshUniformsDash( uniforms, material );
    			}
    		} else if ( material.isPointsMaterial ) {
    			refreshUniformsPoints( uniforms, material, pixelRatio, height );
    		} else if ( material.isSpriteMaterial ) {
    			refreshUniformsSprites( uniforms, material );
    		} else if ( material.isShadowMaterial ) {
    			uniforms.color.value.copy( material.color );
    			uniforms.opacity.value = material.opacity;
    		} else if ( material.isShaderMaterial ) {
    			material.uniformsNeedUpdate = false;
    		}
    	}
    	function refreshUniformsCommon( uniforms, material ) {
    		uniforms.opacity.value = material.opacity;
    		if ( material.color ) {
    			uniforms.diffuse.value.copy( material.color );
    		}
    		if ( material.emissive ) {
    			uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );
    		}
    		if ( material.map ) {
    			uniforms.map.value = material.map;
    		}
    		if ( material.alphaMap ) {
    			uniforms.alphaMap.value = material.alphaMap;
    		}
    		if ( material.specularMap ) {
    			uniforms.specularMap.value = material.specularMap;
    		}
    		const envMap = properties.get( material ).envMap;
    		if ( envMap ) {
    			uniforms.envMap.value = envMap;
    			uniforms.flipEnvMap.value = envMap.isCubeTexture ? - 1 : 1;
    			uniforms.reflectivity.value = material.reflectivity;
    			uniforms.refractionRatio.value = material.refractionRatio;
    			const maxMipLevel = properties.get( envMap ).__maxMipLevel;
    			if ( maxMipLevel !== undefined ) {
    				uniforms.maxMipLevel.value = maxMipLevel;
    			}
    		}
    		if ( material.lightMap ) {
    			uniforms.lightMap.value = material.lightMap;
    			uniforms.lightMapIntensity.value = material.lightMapIntensity;
    		}
    		if ( material.aoMap ) {
    			uniforms.aoMap.value = material.aoMap;
    			uniforms.aoMapIntensity.value = material.aoMapIntensity;
    		}
    		let uvScaleMap;
    		if ( material.map ) {
    			uvScaleMap = material.map;
    		} else if ( material.specularMap ) {
    			uvScaleMap = material.specularMap;
    		} else if ( material.displacementMap ) {
    			uvScaleMap = material.displacementMap;
    		} else if ( material.normalMap ) {
    			uvScaleMap = material.normalMap;
    		} else if ( material.bumpMap ) {
    			uvScaleMap = material.bumpMap;
    		} else if ( material.roughnessMap ) {
    			uvScaleMap = material.roughnessMap;
    		} else if ( material.metalnessMap ) {
    			uvScaleMap = material.metalnessMap;
    		} else if ( material.alphaMap ) {
    			uvScaleMap = material.alphaMap;
    		} else if ( material.emissiveMap ) {
    			uvScaleMap = material.emissiveMap;
    		} else if ( material.clearcoatMap ) {
    			uvScaleMap = material.clearcoatMap;
    		} else if ( material.clearcoatNormalMap ) {
    			uvScaleMap = material.clearcoatNormalMap;
    		} else if ( material.clearcoatRoughnessMap ) {
    			uvScaleMap = material.clearcoatRoughnessMap;
    		}
    		if ( uvScaleMap !== undefined ) {
    			if ( uvScaleMap.isWebGLRenderTarget ) {
    				uvScaleMap = uvScaleMap.texture;
    			}
    			if ( uvScaleMap.matrixAutoUpdate === true ) {
    				uvScaleMap.updateMatrix();
    			}
    			uniforms.uvTransform.value.copy( uvScaleMap.matrix );
    		}
    		let uv2ScaleMap;
    		if ( material.aoMap ) {
    			uv2ScaleMap = material.aoMap;
    		} else if ( material.lightMap ) {
    			uv2ScaleMap = material.lightMap;
    		}
    		if ( uv2ScaleMap !== undefined ) {
    			if ( uv2ScaleMap.isWebGLRenderTarget ) {
    				uv2ScaleMap = uv2ScaleMap.texture;
    			}
    			if ( uv2ScaleMap.matrixAutoUpdate === true ) {
    				uv2ScaleMap.updateMatrix();
    			}
    			uniforms.uv2Transform.value.copy( uv2ScaleMap.matrix );
    		}
    	}
    	function refreshUniformsLine( uniforms, material ) {
    		uniforms.diffuse.value.copy( material.color );
    		uniforms.opacity.value = material.opacity;
    	}
    	function refreshUniformsDash( uniforms, material ) {
    		uniforms.dashSize.value = material.dashSize;
    		uniforms.totalSize.value = material.dashSize + material.gapSize;
    		uniforms.scale.value = material.scale;
    	}
    	function refreshUniformsPoints( uniforms, material, pixelRatio, height ) {
    		uniforms.diffuse.value.copy( material.color );
    		uniforms.opacity.value = material.opacity;
    		uniforms.size.value = material.size * pixelRatio;
    		uniforms.scale.value = height * 0.5;
    		if ( material.map ) {
    			uniforms.map.value = material.map;
    		}
    		if ( material.alphaMap ) {
    			uniforms.alphaMap.value = material.alphaMap;
    		}
    		let uvScaleMap;
    		if ( material.map ) {
    			uvScaleMap = material.map;
    		} else if ( material.alphaMap ) {
    			uvScaleMap = material.alphaMap;
    		}
    		if ( uvScaleMap !== undefined ) {
    			if ( uvScaleMap.matrixAutoUpdate === true ) {
    				uvScaleMap.updateMatrix();
    			}
    			uniforms.uvTransform.value.copy( uvScaleMap.matrix );
    		}
    	}
    	function refreshUniformsSprites( uniforms, material ) {
    		uniforms.diffuse.value.copy( material.color );
    		uniforms.opacity.value = material.opacity;
    		uniforms.rotation.value = material.rotation;
    		if ( material.map ) {
    			uniforms.map.value = material.map;
    		}
    		if ( material.alphaMap ) {
    			uniforms.alphaMap.value = material.alphaMap;
    		}
    		let uvScaleMap;
    		if ( material.map ) {
    			uvScaleMap = material.map;
    		} else if ( material.alphaMap ) {
    			uvScaleMap = material.alphaMap;
    		}
    		if ( uvScaleMap !== undefined ) {
    			if ( uvScaleMap.matrixAutoUpdate === true ) {
    				uvScaleMap.updateMatrix();
    			}
    			uniforms.uvTransform.value.copy( uvScaleMap.matrix );
    		}
    	}
    	function refreshUniformsLambert( uniforms, material ) {
    		if ( material.emissiveMap ) {
    			uniforms.emissiveMap.value = material.emissiveMap;
    		}
    	}
    	function refreshUniformsPhong( uniforms, material ) {
    		uniforms.specular.value.copy( material.specular );
    		uniforms.shininess.value = Math.max( material.shininess, 1e-4 );
    		if ( material.emissiveMap ) {
    			uniforms.emissiveMap.value = material.emissiveMap;
    		}
    		if ( material.bumpMap ) {
    			uniforms.bumpMap.value = material.bumpMap;
    			uniforms.bumpScale.value = material.bumpScale;
    			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
    		}
    		if ( material.normalMap ) {
    			uniforms.normalMap.value = material.normalMap;
    			uniforms.normalScale.value.copy( material.normalScale );
    			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
    		}
    		if ( material.displacementMap ) {
    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;
    		}
    	}
    	function refreshUniformsToon( uniforms, material ) {
    		if ( material.gradientMap ) {
    			uniforms.gradientMap.value = material.gradientMap;
    		}
    		if ( material.emissiveMap ) {
    			uniforms.emissiveMap.value = material.emissiveMap;
    		}
    		if ( material.bumpMap ) {
    			uniforms.bumpMap.value = material.bumpMap;
    			uniforms.bumpScale.value = material.bumpScale;
    			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
    		}
    		if ( material.normalMap ) {
    			uniforms.normalMap.value = material.normalMap;
    			uniforms.normalScale.value.copy( material.normalScale );
    			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
    		}
    		if ( material.displacementMap ) {
    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;
    		}
    	}
    	function refreshUniformsStandard( uniforms, material ) {
    		uniforms.roughness.value = material.roughness;
    		uniforms.metalness.value = material.metalness;
    		if ( material.roughnessMap ) {
    			uniforms.roughnessMap.value = material.roughnessMap;
    		}
    		if ( material.metalnessMap ) {
    			uniforms.metalnessMap.value = material.metalnessMap;
    		}
    		if ( material.emissiveMap ) {
    			uniforms.emissiveMap.value = material.emissiveMap;
    		}
    		if ( material.bumpMap ) {
    			uniforms.bumpMap.value = material.bumpMap;
    			uniforms.bumpScale.value = material.bumpScale;
    			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
    		}
    		if ( material.normalMap ) {
    			uniforms.normalMap.value = material.normalMap;
    			uniforms.normalScale.value.copy( material.normalScale );
    			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
    		}
    		if ( material.displacementMap ) {
    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;
    		}
    		const envMap = properties.get( material ).envMap;
    		if ( envMap ) {
    			uniforms.envMapIntensity.value = material.envMapIntensity;
    		}
    	}
    	function refreshUniformsPhysical( uniforms, material ) {
    		refreshUniformsStandard( uniforms, material );
    		uniforms.reflectivity.value = material.reflectivity;
    		uniforms.clearcoat.value = material.clearcoat;
    		uniforms.clearcoatRoughness.value = material.clearcoatRoughness;
    		if ( material.sheen ) uniforms.sheen.value.copy( material.sheen );
    		if ( material.clearcoatMap ) {
    			uniforms.clearcoatMap.value = material.clearcoatMap;
    		}
    		if ( material.clearcoatRoughnessMap ) {
    			uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;
    		}
    		if ( material.clearcoatNormalMap ) {
    			uniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );
    			uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;
    			if ( material.side === BackSide ) {
    				uniforms.clearcoatNormalScale.value.negate();
    			}
    		}
    		uniforms.transmission.value = material.transmission;
    		if ( material.transmissionMap ) {
    			uniforms.transmissionMap.value = material.transmissionMap;
    		}
    	}
    	function refreshUniformsMatcap( uniforms, material ) {
    		if ( material.matcap ) {
    			uniforms.matcap.value = material.matcap;
    		}
    		if ( material.bumpMap ) {
    			uniforms.bumpMap.value = material.bumpMap;
    			uniforms.bumpScale.value = material.bumpScale;
    			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
    		}
    		if ( material.normalMap ) {
    			uniforms.normalMap.value = material.normalMap;
    			uniforms.normalScale.value.copy( material.normalScale );
    			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
    		}
    		if ( material.displacementMap ) {
    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;
    		}
    	}
    	function refreshUniformsDepth( uniforms, material ) {
    		if ( material.displacementMap ) {
    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;
    		}
    	}
    	function refreshUniformsDistance( uniforms, material ) {
    		if ( material.displacementMap ) {
    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;
    		}
    		uniforms.referencePosition.value.copy( material.referencePosition );
    		uniforms.nearDistance.value = material.nearDistance;
    		uniforms.farDistance.value = material.farDistance;
    	}
    	function refreshUniformsNormal( uniforms, material ) {
    		if ( material.bumpMap ) {
    			uniforms.bumpMap.value = material.bumpMap;
    			uniforms.bumpScale.value = material.bumpScale;
    			if ( material.side === BackSide ) uniforms.bumpScale.value *= - 1;
    		}
    		if ( material.normalMap ) {
    			uniforms.normalMap.value = material.normalMap;
    			uniforms.normalScale.value.copy( material.normalScale );
    			if ( material.side === BackSide ) uniforms.normalScale.value.negate();
    		}
    		if ( material.displacementMap ) {
    			uniforms.displacementMap.value = material.displacementMap;
    			uniforms.displacementScale.value = material.displacementScale;
    			uniforms.displacementBias.value = material.displacementBias;
    		}
    	}
    	return {
    		refreshFogUniforms: refreshFogUniforms,
    		refreshMaterialUniforms: refreshMaterialUniforms
    	};
    }
    function WebGLRenderer( parameters ) {
    	parameters = parameters || {};
    	const _canvas = parameters.canvas !== undefined ? parameters.canvas : document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' ),
    		_context = parameters.context !== undefined ? parameters.context : null,
    		_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
    		_depth = parameters.depth !== undefined ? parameters.depth : true,
    		_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
    		_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
    		_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
    		_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
    		_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
    		_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;
    	let currentRenderList = null;
    	let currentRenderState = null;
    	this.domElement = _canvas;
    	this.debug = {
    		checkShaderErrors: true
    	};
    	this.autoClear = true;
    	this.autoClearColor = true;
    	this.autoClearDepth = true;
    	this.autoClearStencil = true;
    	this.sortObjects = true;
    	this.clippingPlanes = [];
    	this.localClippingEnabled = false;
    	this.gammaFactor = 2.0;
    	this.outputEncoding = LinearEncoding;
    	this.physicallyCorrectLights = false;
    	this.toneMapping = NoToneMapping;
    	this.toneMappingExposure = 1.0;
    	this.maxMorphTargets = 8;
    	this.maxMorphNormals = 4;
    	const _this = this;
    	let _isContextLost = false;
    	let _framebuffer = null;
    	let _currentActiveCubeFace = 0;
    	let _currentActiveMipmapLevel = 0;
    	let _currentRenderTarget = null;
    	let _currentFramebuffer = null;
    	let _currentMaterialId = - 1;
    	let _currentCamera = null;
    	let _currentArrayCamera = null;
    	const _currentViewport = new Vector4();
    	const _currentScissor = new Vector4();
    	let _currentScissorTest = null;
    	let _width = _canvas.width;
    	let _height = _canvas.height;
    	let _pixelRatio = 1;
    	let _opaqueSort = null;
    	let _transparentSort = null;
    	const _viewport = new Vector4( 0, 0, _width, _height );
    	const _scissor = new Vector4( 0, 0, _width, _height );
    	let _scissorTest = false;
    	const _frustum = new Frustum();
    	let _clippingEnabled = false;
    	let _localClippingEnabled = false;
    	const _projScreenMatrix = new Matrix4();
    	const _vector3 = new Vector3();
    	const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };
    	function getTargetPixelRatio() {
    		return _currentRenderTarget === null ? _pixelRatio : 1;
    	}
    	let _gl = _context;
    	function getContext( contextNames, contextAttributes ) {
    		for ( let i = 0; i < contextNames.length; i ++ ) {
    			const contextName = contextNames[ i ];
    			const context = _canvas.getContext( contextName, contextAttributes );
    			if ( context !== null ) return context;
    		}
    		return null;
    	}
    	try {
    		const contextAttributes = {
    			alpha: _alpha,
    			depth: _depth,
    			stencil: _stencil,
    			antialias: _antialias,
    			premultipliedAlpha: _premultipliedAlpha,
    			preserveDrawingBuffer: _preserveDrawingBuffer,
    			powerPreference: _powerPreference,
    			failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat
    		};
    		_canvas.addEventListener( 'webglcontextlost', onContextLost, false );
    		_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );
    		if ( _gl === null ) {
    			const contextNames = [ 'webgl2', 'webgl', 'experimental-webgl' ];
    			if ( _this.isWebGL1Renderer === true ) {
    				contextNames.shift();
    			}
    			_gl = getContext( contextNames, contextAttributes );
    			if ( _gl === null ) {
    				if ( getContext( contextNames ) ) {
    					throw new Error( 'Error creating WebGL context with your selected attributes.' );
    				} else {
    					throw new Error( 'Error creating WebGL context.' );
    				}
    			}
    		}
    		if ( _gl.getShaderPrecisionFormat === undefined ) {
    			_gl.getShaderPrecisionFormat = function () {
    				return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };
    			};
    		}
    	} catch ( error ) {
    		console.error( 'THREE.WebGLRenderer: ' + error.message );
    		throw error;
    	}
    	let extensions, capabilities, state, info;
    	let properties, textures, cubemaps, attributes, geometries, objects;
    	let programCache, materials, renderLists, renderStates, clipping;
    	let background, morphtargets, bufferRenderer, indexedBufferRenderer;
    	let utils, bindingStates;
    	function initGLContext() {
    		extensions = new WebGLExtensions( _gl );
    		capabilities = new WebGLCapabilities( _gl, extensions, parameters );
    		if ( capabilities.isWebGL2 === false ) {
    			extensions.get( 'WEBGL_depth_texture' );
    			extensions.get( 'OES_texture_float' );
    			extensions.get( 'OES_texture_half_float' );
    			extensions.get( 'OES_texture_half_float_linear' );
    			extensions.get( 'OES_standard_derivatives' );
    			extensions.get( 'OES_element_index_uint' );
    			extensions.get( 'OES_vertex_array_object' );
    			extensions.get( 'ANGLE_instanced_arrays' );
    		}
    		extensions.get( 'OES_texture_float_linear' );
    		utils = new WebGLUtils( _gl, extensions, capabilities );
    		state = new WebGLState( _gl, extensions, capabilities );
    		state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );
    		state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );
    		info = new WebGLInfo();
    		properties = new WebGLProperties();
    		textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
    		cubemaps = new WebGLCubeMaps( _this );
    		attributes = new WebGLAttributes( _gl, capabilities );
    		bindingStates = new WebGLBindingStates( _gl, extensions, attributes, capabilities );
    		geometries = new WebGLGeometries( _gl, attributes, info, bindingStates );
    		objects = new WebGLObjects( _gl, geometries, attributes, info );
    		morphtargets = new WebGLMorphtargets( _gl );
    		clipping = new WebGLClipping( properties );
    		programCache = new WebGLPrograms( _this, cubemaps, extensions, capabilities, bindingStates, clipping );
    		materials = new WebGLMaterials( properties );
    		renderLists = new WebGLRenderLists( properties );
    		renderStates = new WebGLRenderStates();
    		background = new WebGLBackground( _this, cubemaps, state, objects, _premultipliedAlpha );
    		bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );
    		indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );
    		info.programs = programCache.programs;
    		_this.capabilities = capabilities;
    		_this.extensions = extensions;
    		_this.properties = properties;
    		_this.renderLists = renderLists;
    		_this.state = state;
    		_this.info = info;
    	}
    	initGLContext();
    	const xr = new WebXRManager( _this, _gl );
    	this.xr = xr;
    	const shadowMap = new WebGLShadowMap( _this, objects, capabilities.maxTextureSize );
    	this.shadowMap = shadowMap;
    	this.getContext = function () {
    		return _gl;
    	};
    	this.getContextAttributes = function () {
    		return _gl.getContextAttributes();
    	};
    	this.forceContextLoss = function () {
    		const extension = extensions.get( 'WEBGL_lose_context' );
    		if ( extension ) extension.loseContext();
    	};
    	this.forceContextRestore = function () {
    		const extension = extensions.get( 'WEBGL_lose_context' );
    		if ( extension ) extension.restoreContext();
    	};
    	this.getPixelRatio = function () {
    		return _pixelRatio;
    	};
    	this.setPixelRatio = function ( value ) {
    		if ( value === undefined ) return;
    		_pixelRatio = value;
    		this.setSize( _width, _height, false );
    	};
    	this.getSize = function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'WebGLRenderer: .getsize() now requires a Vector2 as an argument' );
    			target = new Vector2();
    		}
    		return target.set( _width, _height );
    	};
    	this.setSize = function ( width, height, updateStyle ) {
    		if ( xr.isPresenting ) {
    			console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
    			return;
    		}
    		_width = width;
    		_height = height;
    		_canvas.width = Math.floor( width * _pixelRatio );
    		_canvas.height = Math.floor( height * _pixelRatio );
    		if ( updateStyle !== false ) {
    			_canvas.style.width = width + 'px';
    			_canvas.style.height = height + 'px';
    		}
    		this.setViewport( 0, 0, width, height );
    	};
    	this.getDrawingBufferSize = function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'WebGLRenderer: .getdrawingBufferSize() now requires a Vector2 as an argument' );
    			target = new Vector2();
    		}
    		return target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();
    	};
    	this.setDrawingBufferSize = function ( width, height, pixelRatio ) {
    		_width = width;
    		_height = height;
    		_pixelRatio = pixelRatio;
    		_canvas.width = Math.floor( width * pixelRatio );
    		_canvas.height = Math.floor( height * pixelRatio );
    		this.setViewport( 0, 0, width, height );
    	};
    	this.getCurrentViewport = function ( target ) {
    		if ( target === undefined ) {
    			console.warn( 'WebGLRenderer: .getCurrentViewport() now requires a Vector4 as an argument' );
    			target = new Vector4();
    		}
    		return target.copy( _currentViewport );
    	};
    	this.getViewport = function ( target ) {
    		return target.copy( _viewport );
    	};
    	this.setViewport = function ( x, y, width, height ) {
    		if ( x.isVector4 ) {
    			_viewport.set( x.x, x.y, x.z, x.w );
    		} else {
    			_viewport.set( x, y, width, height );
    		}
    		state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );
    	};
    	this.getScissor = function ( target ) {
    		return target.copy( _scissor );
    	};
    	this.setScissor = function ( x, y, width, height ) {
    		if ( x.isVector4 ) {
    			_scissor.set( x.x, x.y, x.z, x.w );
    		} else {
    			_scissor.set( x, y, width, height );
    		}
    		state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );
    	};
    	this.getScissorTest = function () {
    		return _scissorTest;
    	};
    	this.setScissorTest = function ( boolean ) {
    		state.setScissorTest( _scissorTest = boolean );
    	};
    	this.setOpaqueSort = function ( method ) {
    		_opaqueSort = method;
    	};
    	this.setTransparentSort = function ( method ) {
    		_transparentSort = method;
    	};
    	this.getClearColor = function () {
    		return background.getClearColor();
    	};
    	this.setClearColor = function () {
    		background.setClearColor.apply( background, arguments );
    	};
    	this.getClearAlpha = function () {
    		return background.getClearAlpha();
    	};
    	this.setClearAlpha = function () {
    		background.setClearAlpha.apply( background, arguments );
    	};
    	this.clear = function ( color, depth, stencil ) {
    		let bits = 0;
    		if ( color === undefined || color ) bits |= 16384;
    		if ( depth === undefined || depth ) bits |= 256;
    		if ( stencil === undefined || stencil ) bits |= 1024;
    		_gl.clear( bits );
    	};
    	this.clearColor = function () {
    		this.clear( true, false, false );
    	};
    	this.clearDepth = function () {
    		this.clear( false, true, false );
    	};
    	this.clearStencil = function () {
    		this.clear( false, false, true );
    	};
    	this.dispose = function () {
    		_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
    		_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );
    		renderLists.dispose();
    		renderStates.dispose();
    		properties.dispose();
    		cubemaps.dispose();
    		objects.dispose();
    		bindingStates.dispose();
    		xr.dispose();
    		animation.stop();
    	};
    	function onContextLost( event ) {
    		event.preventDefault();
    		console.log( 'THREE.WebGLRenderer: Context Lost.' );
    		_isContextLost = true;
    	}
    	function onContextRestore(  ) {
    		console.log( 'THREE.WebGLRenderer: Context Restored.' );
    		_isContextLost = false;
    		initGLContext();
    	}
    	function onMaterialDispose( event ) {
    		const material = event.target;
    		material.removeEventListener( 'dispose', onMaterialDispose );
    		deallocateMaterial( material );
    	}
    	function deallocateMaterial( material ) {
    		releaseMaterialProgramReference( material );
    		properties.remove( material );
    	}
    	function releaseMaterialProgramReference( material ) {
    		const programInfo = properties.get( material ).program;
    		if ( programInfo !== undefined ) {
    			programCache.releaseProgram( programInfo );
    		}
    	}
    	function renderObjectImmediate( object, program ) {
    		object.render( function ( object ) {
    			_this.renderBufferImmediate( object, program );
    		} );
    	}
    	this.renderBufferImmediate = function ( object, program ) {
    		bindingStates.initAttributes();
    		const buffers = properties.get( object );
    		if ( object.hasPositions && ! buffers.position ) buffers.position = _gl.createBuffer();
    		if ( object.hasNormals && ! buffers.normal ) buffers.normal = _gl.createBuffer();
    		if ( object.hasUvs && ! buffers.uv ) buffers.uv = _gl.createBuffer();
    		if ( object.hasColors && ! buffers.color ) buffers.color = _gl.createBuffer();
    		const programAttributes = program.getAttributes();
    		if ( object.hasPositions ) {
    			_gl.bindBuffer( 34962, buffers.position );
    			_gl.bufferData( 34962, object.positionArray, 35048 );
    			bindingStates.enableAttribute( programAttributes.position );
    			_gl.vertexAttribPointer( programAttributes.position, 3, 5126, false, 0, 0 );
    		}
    		if ( object.hasNormals ) {
    			_gl.bindBuffer( 34962, buffers.normal );
    			_gl.bufferData( 34962, object.normalArray, 35048 );
    			bindingStates.enableAttribute( programAttributes.normal );
    			_gl.vertexAttribPointer( programAttributes.normal, 3, 5126, false, 0, 0 );
    		}
    		if ( object.hasUvs ) {
    			_gl.bindBuffer( 34962, buffers.uv );
    			_gl.bufferData( 34962, object.uvArray, 35048 );
    			bindingStates.enableAttribute( programAttributes.uv );
    			_gl.vertexAttribPointer( programAttributes.uv, 2, 5126, false, 0, 0 );
    		}
    		if ( object.hasColors ) {
    			_gl.bindBuffer( 34962, buffers.color );
    			_gl.bufferData( 34962, object.colorArray, 35048 );
    			bindingStates.enableAttribute( programAttributes.color );
    			_gl.vertexAttribPointer( programAttributes.color, 3, 5126, false, 0, 0 );
    		}
    		bindingStates.disableUnusedAttributes();
    		_gl.drawArrays( 4, 0, object.count );
    		object.count = 0;
    	};
    	this.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {
    		if ( scene === null ) scene = _emptyScene;
    		const frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );
    		const program = setProgram( camera, scene, material, object );
    		state.setMaterial( material, frontFaceCW );
    		let index = geometry.index;
    		const position = geometry.attributes.position;
    		if ( index === null ) {
    			if ( position === undefined || position.count === 0 ) return;
    		} else if ( index.count === 0 ) {
    			return;
    		}
    		let rangeFactor = 1;
    		if ( material.wireframe === true ) {
    			index = geometries.getWireframeAttribute( geometry );
    			rangeFactor = 2;
    		}
    		if ( material.morphTargets || material.morphNormals ) {
    			morphtargets.update( object, geometry, material, program );
    		}
    		bindingStates.setup( object, material, program, geometry, index );
    		let attribute;
    		let renderer = bufferRenderer;
    		if ( index !== null ) {
    			attribute = attributes.get( index );
    			renderer = indexedBufferRenderer;
    			renderer.setIndex( attribute );
    		}
    		const dataCount = ( index !== null ) ? index.count : position.count;
    		const rangeStart = geometry.drawRange.start * rangeFactor;
    		const rangeCount = geometry.drawRange.count * rangeFactor;
    		const groupStart = group !== null ? group.start * rangeFactor : 0;
    		const groupCount = group !== null ? group.count * rangeFactor : Infinity;
    		const drawStart = Math.max( rangeStart, groupStart );
    		const drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;
    		const drawCount = Math.max( 0, drawEnd - drawStart + 1 );
    		if ( drawCount === 0 ) return;
    		if ( object.isMesh ) {
    			if ( material.wireframe === true ) {
    				state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
    				renderer.setMode( 1 );
    			} else {
    				renderer.setMode( 4 );
    			}
    		} else if ( object.isLine ) {
    			let lineWidth = material.linewidth;
    			if ( lineWidth === undefined ) lineWidth = 1;
    			state.setLineWidth( lineWidth * getTargetPixelRatio() );
    			if ( object.isLineSegments ) {
    				renderer.setMode( 1 );
    			} else if ( object.isLineLoop ) {
    				renderer.setMode( 2 );
    			} else {
    				renderer.setMode( 3 );
    			}
    		} else if ( object.isPoints ) {
    			renderer.setMode( 0 );
    		} else if ( object.isSprite ) {
    			renderer.setMode( 4 );
    		}
    		if ( object.isInstancedMesh ) {
    			renderer.renderInstances( drawStart, drawCount, object.count );
    		} else if ( geometry.isInstancedBufferGeometry ) {
    			const instanceCount = Math.min( geometry.instanceCount, geometry._maxInstanceCount );
    			renderer.renderInstances( drawStart, drawCount, instanceCount );
    		} else {
    			renderer.render( drawStart, drawCount );
    		}
    	};
    	this.compile = function ( scene, camera ) {
    		currentRenderState = renderStates.get( scene, camera );
    		currentRenderState.init();
    		scene.traverse( function ( object ) {
    			if ( object.isLight ) {
    				currentRenderState.pushLight( object );
    				if ( object.castShadow ) {
    					currentRenderState.pushShadow( object );
    				}
    			}
    		} );
    		currentRenderState.setupLights( camera );
    		const compiled = new WeakMap();
    		scene.traverse( function ( object ) {
    			const material = object.material;
    			if ( material ) {
    				if ( Array.isArray( material ) ) {
    					for ( let i = 0; i < material.length; i ++ ) {
    						const material2 = material[ i ];
    						if ( compiled.has( material2 ) === false ) {
    							initMaterial( material2, scene, object );
    							compiled.set( material2 );
    						}
    					}
    				} else if ( compiled.has( material ) === false ) {
    					initMaterial( material, scene, object );
    					compiled.set( material );
    				}
    			}
    		} );
    	};
    	let onAnimationFrameCallback = null;
    	function onAnimationFrame( time ) {
    		if ( xr.isPresenting ) return;
    		if ( onAnimationFrameCallback ) onAnimationFrameCallback( time );
    	}
    	const animation = new WebGLAnimation();
    	animation.setAnimationLoop( onAnimationFrame );
    	if ( typeof window !== 'undefined' ) animation.setContext( window );
    	this.setAnimationLoop = function ( callback ) {
    		onAnimationFrameCallback = callback;
    		xr.setAnimationLoop( callback );
    		( callback === null ) ? animation.stop() : animation.start();
    	};
    	this.render = function ( scene, camera ) {
    		let renderTarget, forceClear;
    		if ( arguments[ 2 ] !== undefined ) {
    			console.warn( 'THREE.WebGLRenderer.render(): the renderTarget argument has been removed. Use .setRenderTarget() instead.' );
    			renderTarget = arguments[ 2 ];
    		}
    		if ( arguments[ 3 ] !== undefined ) {
    			console.warn( 'THREE.WebGLRenderer.render(): the forceClear argument has been removed. Use .clear() instead.' );
    			forceClear = arguments[ 3 ];
    		}
    		if ( camera !== undefined && camera.isCamera !== true ) {
    			console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );
    			return;
    		}
    		if ( _isContextLost === true ) return;
    		bindingStates.resetDefaultState();
    		_currentMaterialId = - 1;
    		_currentCamera = null;
    		if ( scene.autoUpdate === true ) scene.updateMatrixWorld();
    		if ( camera.parent === null ) camera.updateMatrixWorld();
    		if ( xr.enabled === true && xr.isPresenting === true ) {
    			camera = xr.getCamera( camera );
    		}
    		if ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, renderTarget || _currentRenderTarget );
    		currentRenderState = renderStates.get( scene, camera );
    		currentRenderState.init();
    		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
    		_frustum.setFromProjectionMatrix( _projScreenMatrix );
    		_localClippingEnabled = this.localClippingEnabled;
    		_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled, camera );
    		currentRenderList = renderLists.get( scene, camera );
    		currentRenderList.init();
    		projectObject( scene, camera, 0, _this.sortObjects );
    		currentRenderList.finish();
    		if ( _this.sortObjects === true ) {
    			currentRenderList.sort( _opaqueSort, _transparentSort );
    		}
    		if ( _clippingEnabled === true ) clipping.beginShadows();
    		const shadowsArray = currentRenderState.state.shadowsArray;
    		shadowMap.render( shadowsArray, scene, camera );
    		currentRenderState.setupLights( camera );
    		if ( _clippingEnabled === true ) clipping.endShadows();
    		if ( this.info.autoReset === true ) this.info.reset();
    		if ( renderTarget !== undefined ) {
    			this.setRenderTarget( renderTarget );
    		}
    		background.render( currentRenderList, scene, camera, forceClear );
    		const opaqueObjects = currentRenderList.opaque;
    		const transparentObjects = currentRenderList.transparent;
    		if ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );
    		if ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );
    		if ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );
    		if ( _currentRenderTarget !== null ) {
    			textures.updateRenderTargetMipmap( _currentRenderTarget );
    			textures.updateMultisampleRenderTarget( _currentRenderTarget );
    		}
    		state.buffers.depth.setTest( true );
    		state.buffers.depth.setMask( true );
    		state.buffers.color.setMask( true );
    		state.setPolygonOffset( false );
    		currentRenderList = null;
    		currentRenderState = null;
    	};
    	function projectObject( object, camera, groupOrder, sortObjects ) {
    		if ( object.visible === false ) return;
    		const visible = object.layers.test( camera.layers );
    		if ( visible ) {
    			if ( object.isGroup ) {
    				groupOrder = object.renderOrder;
    			} else if ( object.isLOD ) {
    				if ( object.autoUpdate === true ) object.update( camera );
    			} else if ( object.isLight ) {
    				currentRenderState.pushLight( object );
    				if ( object.castShadow ) {
    					currentRenderState.pushShadow( object );
    				}
    			} else if ( object.isSprite ) {
    				if ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {
    					if ( sortObjects ) {
    						_vector3.setFromMatrixPosition( object.matrixWorld )
    							.applyMatrix4( _projScreenMatrix );
    					}
    					const geometry = objects.update( object );
    					const material = object.material;
    					if ( material.visible ) {
    						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );
    					}
    				}
    			} else if ( object.isImmediateRenderObject ) {
    				if ( sortObjects ) {
    					_vector3.setFromMatrixPosition( object.matrixWorld )
    						.applyMatrix4( _projScreenMatrix );
    				}
    				currentRenderList.push( object, null, object.material, groupOrder, _vector3.z, null );
    			} else if ( object.isMesh || object.isLine || object.isPoints ) {
    				if ( object.isSkinnedMesh ) {
    					if ( object.skeleton.frame !== info.render.frame ) {
    						object.skeleton.update();
    						object.skeleton.frame = info.render.frame;
    					}
    				}
    				if ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {
    					if ( sortObjects ) {
    						_vector3.setFromMatrixPosition( object.matrixWorld )
    							.applyMatrix4( _projScreenMatrix );
    					}
    					const geometry = objects.update( object );
    					const material = object.material;
    					if ( Array.isArray( material ) ) {
    						const groups = geometry.groups;
    						for ( let i = 0, l = groups.length; i < l; i ++ ) {
    							const group = groups[ i ];
    							const groupMaterial = material[ group.materialIndex ];
    							if ( groupMaterial && groupMaterial.visible ) {
    								currentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector3.z, group );
    							}
    						}
    					} else if ( material.visible ) {
    						currentRenderList.push( object, geometry, material, groupOrder, _vector3.z, null );
    					}
    				}
    			}
    		}
    		const children = object.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			projectObject( children[ i ], camera, groupOrder, sortObjects );
    		}
    	}
    	function renderObjects( renderList, scene, camera ) {
    		const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
    		for ( let i = 0, l = renderList.length; i < l; i ++ ) {
    			const renderItem = renderList[ i ];
    			const object = renderItem.object;
    			const geometry = renderItem.geometry;
    			const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
    			const group = renderItem.group;
    			if ( camera.isArrayCamera ) {
    				_currentArrayCamera = camera;
    				const cameras = camera.cameras;
    				for ( let j = 0, jl = cameras.length; j < jl; j ++ ) {
    					const camera2 = cameras[ j ];
    					if ( object.layers.test( camera2.layers ) ) {
    						state.viewport( _currentViewport.copy( camera2.viewport ) );
    						currentRenderState.setupLights( camera2 );
    						renderObject( object, scene, camera2, geometry, material, group );
    					}
    				}
    			} else {
    				_currentArrayCamera = null;
    				renderObject( object, scene, camera, geometry, material, group );
    			}
    		}
    	}
    	function renderObject( object, scene, camera, geometry, material, group ) {
    		object.onBeforeRender( _this, scene, camera, geometry, material, group );
    		currentRenderState = renderStates.get( scene, _currentArrayCamera || camera );
    		object.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );
    		object.normalMatrix.getNormalMatrix( object.modelViewMatrix );
    		if ( object.isImmediateRenderObject ) {
    			const program = setProgram( camera, scene, material, object );
    			state.setMaterial( material );
    			bindingStates.reset();
    			renderObjectImmediate( object, program );
    		} else {
    			_this.renderBufferDirect( camera, scene, geometry, material, object, group );
    		}
    		object.onAfterRender( _this, scene, camera, geometry, material, group );
    		currentRenderState = renderStates.get( scene, _currentArrayCamera || camera );
    	}
    	function initMaterial( material, scene, object ) {
    		if ( scene.isScene !== true ) scene = _emptyScene;
    		const materialProperties = properties.get( material );
    		const lights = currentRenderState.state.lights;
    		const shadowsArray = currentRenderState.state.shadowsArray;
    		const lightsStateVersion = lights.state.version;
    		const parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );
    		const programCacheKey = programCache.getProgramCacheKey( parameters );
    		let program = materialProperties.program;
    		let programChange = true;
    		if ( program === undefined ) {
    			material.addEventListener( 'dispose', onMaterialDispose );
    		} else if ( program.cacheKey !== programCacheKey ) {
    			releaseMaterialProgramReference( material );
    		} else if ( materialProperties.lightsStateVersion !== lightsStateVersion ) {
    			programChange = false;
    		} else if ( parameters.shaderID !== undefined ) {
    			const environment = material.isMeshStandardMaterial ? scene.environment : null;
    			materialProperties.envMap = cubemaps.get( material.envMap || environment );
    			return;
    		} else {
    			programChange = false;
    		}
    		if ( programChange ) {
    			parameters.uniforms = programCache.getUniforms( material );
    			material.onBeforeCompile( parameters, _this );
    			program = programCache.acquireProgram( parameters, programCacheKey );
    			materialProperties.program = program;
    			materialProperties.uniforms = parameters.uniforms;
    			materialProperties.outputEncoding = parameters.outputEncoding;
    		}
    		const uniforms = materialProperties.uniforms;
    		if ( ! material.isShaderMaterial &&
    			! material.isRawShaderMaterial ||
    			material.clipping === true ) {
    			materialProperties.numClippingPlanes = clipping.numPlanes;
    			materialProperties.numIntersection = clipping.numIntersection;
    			uniforms.clippingPlanes = clipping.uniform;
    		}
    		materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
    		materialProperties.fog = scene.fog;
    		materialProperties.envMap = cubemaps.get( material.envMap || materialProperties.environment );
    		materialProperties.needsLights = materialNeedsLights( material );
    		materialProperties.lightsStateVersion = lightsStateVersion;
    		if ( materialProperties.needsLights ) {
    			uniforms.ambientLightColor.value = lights.state.ambient;
    			uniforms.lightProbe.value = lights.state.probe;
    			uniforms.directionalLights.value = lights.state.directional;
    			uniforms.directionalLightShadows.value = lights.state.directionalShadow;
    			uniforms.spotLights.value = lights.state.spot;
    			uniforms.spotLightShadows.value = lights.state.spotShadow;
    			uniforms.rectAreaLights.value = lights.state.rectArea;
    			uniforms.ltc_1.value = lights.state.rectAreaLTC1;
    			uniforms.ltc_2.value = lights.state.rectAreaLTC2;
    			uniforms.pointLights.value = lights.state.point;
    			uniforms.pointLightShadows.value = lights.state.pointShadow;
    			uniforms.hemisphereLights.value = lights.state.hemi;
    			uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
    			uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
    			uniforms.spotShadowMap.value = lights.state.spotShadowMap;
    			uniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;
    			uniforms.pointShadowMap.value = lights.state.pointShadowMap;
    			uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
    		}
    		const progUniforms = materialProperties.program.getUniforms();
    		const uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, uniforms );
    		materialProperties.uniformsList = uniformsList;
    	}
    	function setProgram( camera, scene, material, object ) {
    		if ( scene.isScene !== true ) scene = _emptyScene;
    		textures.resetTextureUnits();
    		const fog = scene.fog;
    		const environment = material.isMeshStandardMaterial ? scene.environment : null;
    		const encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : _currentRenderTarget.texture.encoding;
    		const envMap = cubemaps.get( material.envMap || environment );
    		const materialProperties = properties.get( material );
    		const lights = currentRenderState.state.lights;
    		if ( _clippingEnabled === true ) {
    			if ( _localClippingEnabled === true || camera !== _currentCamera ) {
    				const useCache =
    					camera === _currentCamera &&
    					material.id === _currentMaterialId;
    				clipping.setState( material, camera, useCache );
    			}
    		}
    		if ( material.version === materialProperties.__version ) {
    			if ( material.fog && materialProperties.fog !== fog ) {
    				initMaterial( material, scene, object );
    			} else if ( materialProperties.environment !== environment ) {
    				initMaterial( material, scene, object );
    			} else if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {
    				initMaterial( material, scene, object );
    			} else if ( materialProperties.numClippingPlanes !== undefined &&
    				( materialProperties.numClippingPlanes !== clipping.numPlanes ||
    				materialProperties.numIntersection !== clipping.numIntersection ) ) {
    				initMaterial( material, scene, object );
    			} else if ( materialProperties.outputEncoding !== encoding ) {
    				initMaterial( material, scene, object );
    			} else if ( materialProperties.envMap !== envMap ) {
    				initMaterial( material, scene, object );
    			}
    		} else {
    			initMaterial( material, scene, object );
    			materialProperties.__version = material.version;
    		}
    		let refreshProgram = false;
    		let refreshMaterial = false;
    		let refreshLights = false;
    		const program = materialProperties.program,
    			p_uniforms = program.getUniforms(),
    			m_uniforms = materialProperties.uniforms;
    		if ( state.useProgram( program.program ) ) {
    			refreshProgram = true;
    			refreshMaterial = true;
    			refreshLights = true;
    		}
    		if ( material.id !== _currentMaterialId ) {
    			_currentMaterialId = material.id;
    			refreshMaterial = true;
    		}
    		if ( refreshProgram || _currentCamera !== camera ) {
    			p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );
    			if ( capabilities.logarithmicDepthBuffer ) {
    				p_uniforms.setValue( _gl, 'logDepthBufFC',
    					2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );
    			}
    			if ( _currentCamera !== camera ) {
    				_currentCamera = camera;
    				refreshMaterial = true;
    				refreshLights = true;
    			}
    			if ( material.isShaderMaterial ||
    				material.isMeshPhongMaterial ||
    				material.isMeshToonMaterial ||
    				material.isMeshStandardMaterial ||
    				material.envMap ) {
    				const uCamPos = p_uniforms.map.cameraPosition;
    				if ( uCamPos !== undefined ) {
    					uCamPos.setValue( _gl,
    						_vector3.setFromMatrixPosition( camera.matrixWorld ) );
    				}
    			}
    			if ( material.isMeshPhongMaterial ||
    				material.isMeshToonMaterial ||
    				material.isMeshLambertMaterial ||
    				material.isMeshBasicMaterial ||
    				material.isMeshStandardMaterial ||
    				material.isShaderMaterial ) {
    				p_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );
    			}
    			if ( material.isMeshPhongMaterial ||
    				material.isMeshToonMaterial ||
    				material.isMeshLambertMaterial ||
    				material.isMeshBasicMaterial ||
    				material.isMeshStandardMaterial ||
    				material.isShaderMaterial ||
    				material.isShadowMaterial ||
    				material.skinning ) {
    				p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );
    			}
    		}
    		if ( material.skinning ) {
    			p_uniforms.setOptional( _gl, object, 'bindMatrix' );
    			p_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );
    			const skeleton = object.skeleton;
    			if ( skeleton ) {
    				const bones = skeleton.bones;
    				if ( capabilities.floatVertexTextures ) {
    					if ( skeleton.boneTexture === undefined ) {
    						let size = Math.sqrt( bones.length * 4 );
    						size = MathUtils.ceilPowerOfTwo( size );
    						size = Math.max( size, 4 );
    						const boneMatrices = new Float32Array( size * size * 4 );
    						boneMatrices.set( skeleton.boneMatrices );
    						const boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );
    						skeleton.boneMatrices = boneMatrices;
    						skeleton.boneTexture = boneTexture;
    						skeleton.boneTextureSize = size;
    					}
    					p_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );
    					p_uniforms.setValue( _gl, 'boneTextureSize', skeleton.boneTextureSize );
    				} else {
    					p_uniforms.setOptional( _gl, skeleton, 'boneMatrices' );
    				}
    			}
    		}
    		if ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {
    			materialProperties.receiveShadow = object.receiveShadow;
    			p_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );
    		}
    		if ( refreshMaterial ) {
    			p_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );
    			if ( materialProperties.needsLights ) {
    				markUniformsLightsNeedsUpdate( m_uniforms, refreshLights );
    			}
    			if ( fog && material.fog ) {
    				materials.refreshFogUniforms( m_uniforms, fog );
    			}
    			materials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height );
    			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );
    		}
    		if ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {
    			WebGLUniforms.upload( _gl, materialProperties.uniformsList, m_uniforms, textures );
    			material.uniformsNeedUpdate = false;
    		}
    		if ( material.isSpriteMaterial ) {
    			p_uniforms.setValue( _gl, 'center', object.center );
    		}
    		p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
    		p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
    		p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );
    		return program;
    	}
    	function markUniformsLightsNeedsUpdate( uniforms, value ) {
    		uniforms.ambientLightColor.needsUpdate = value;
    		uniforms.lightProbe.needsUpdate = value;
    		uniforms.directionalLights.needsUpdate = value;
    		uniforms.directionalLightShadows.needsUpdate = value;
    		uniforms.pointLights.needsUpdate = value;
    		uniforms.pointLightShadows.needsUpdate = value;
    		uniforms.spotLights.needsUpdate = value;
    		uniforms.spotLightShadows.needsUpdate = value;
    		uniforms.rectAreaLights.needsUpdate = value;
    		uniforms.hemisphereLights.needsUpdate = value;
    	}
    	function materialNeedsLights( material ) {
    		return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||
    			material.isMeshStandardMaterial || material.isShadowMaterial ||
    			( material.isShaderMaterial && material.lights === true );
    	}
    	this.setFramebuffer = function ( value ) {
    		if ( _framebuffer !== value && _currentRenderTarget === null ) _gl.bindFramebuffer( 36160, value );
    		_framebuffer = value;
    	};
    	this.getActiveCubeFace = function () {
    		return _currentActiveCubeFace;
    	};
    	this.getActiveMipmapLevel = function () {
    		return _currentActiveMipmapLevel;
    	};
    	this.getRenderList = function () {
    		return currentRenderList;
    	};
    	this.setRenderList = function ( renderList ) {
    		currentRenderList = renderList;
    	};
    	this.getRenderState = function () {
    		return currentRenderState;
    	};
    	this.setRenderState = function ( renderState ) {
    		currentRenderState = renderState;
    	};
    	this.getRenderTarget = function () {
    		return _currentRenderTarget;
    	};
    	this.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {
    		_currentRenderTarget = renderTarget;
    		_currentActiveCubeFace = activeCubeFace;
    		_currentActiveMipmapLevel = activeMipmapLevel;
    		if ( renderTarget && properties.get( renderTarget ).__webglFramebuffer === undefined ) {
    			textures.setupRenderTarget( renderTarget );
    		}
    		let framebuffer = _framebuffer;
    		let isCube = false;
    		if ( renderTarget ) {
    			const __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;
    			if ( renderTarget.isWebGLCubeRenderTarget ) {
    				framebuffer = __webglFramebuffer[ activeCubeFace ];
    				isCube = true;
    			} else if ( renderTarget.isWebGLMultisampleRenderTarget ) {
    				framebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;
    			} else {
    				framebuffer = __webglFramebuffer;
    			}
    			_currentViewport.copy( renderTarget.viewport );
    			_currentScissor.copy( renderTarget.scissor );
    			_currentScissorTest = renderTarget.scissorTest;
    		} else {
    			_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();
    			_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();
    			_currentScissorTest = _scissorTest;
    		}
    		if ( _currentFramebuffer !== framebuffer ) {
    			_gl.bindFramebuffer( 36160, framebuffer );
    			_currentFramebuffer = framebuffer;
    		}
    		state.viewport( _currentViewport );
    		state.scissor( _currentScissor );
    		state.setScissorTest( _currentScissorTest );
    		if ( isCube ) {
    			const textureProperties = properties.get( renderTarget.texture );
    			_gl.framebufferTexture2D( 36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );
    		}
    	};
    	this.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {
    		if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {
    			console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
    			return;
    		}
    		let framebuffer = properties.get( renderTarget ).__webglFramebuffer;
    		if ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {
    			framebuffer = framebuffer[ activeCubeFaceIndex ];
    		}
    		if ( framebuffer ) {
    			let restore = false;
    			if ( framebuffer !== _currentFramebuffer ) {
    				_gl.bindFramebuffer( 36160, framebuffer );
    				restore = true;
    			}
    			try {
    				const texture = renderTarget.texture;
    				const textureFormat = texture.format;
    				const textureType = texture.type;
    				if ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== _gl.getParameter( 35739 ) ) {
    					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
    					return;
    				}
    				if ( textureType !== UnsignedByteType && utils.convert( textureType ) !== _gl.getParameter( 35738 ) &&
    					! ( textureType === FloatType && ( capabilities.isWebGL2 || extensions.get( 'OES_texture_float' ) || extensions.get( 'WEBGL_color_buffer_float' ) ) ) &&
    					! ( textureType === HalfFloatType && ( capabilities.isWebGL2 ? extensions.get( 'EXT_color_buffer_float' ) : extensions.get( 'EXT_color_buffer_half_float' ) ) ) ) {
    					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
    					return;
    				}
    				if ( _gl.checkFramebufferStatus( 36160 ) === 36053 ) {
    					if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {
    						_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );
    					}
    				} else {
    					console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.' );
    				}
    			} finally {
    				if ( restore ) {
    					_gl.bindFramebuffer( 36160, _currentFramebuffer );
    				}
    			}
    		}
    	};
    	this.copyFramebufferToTexture = function ( position, texture, level ) {
    		if ( level === undefined ) level = 0;
    		const levelScale = Math.pow( 2, - level );
    		const width = Math.floor( texture.image.width * levelScale );
    		const height = Math.floor( texture.image.height * levelScale );
    		const glFormat = utils.convert( texture.format );
    		textures.setTexture2D( texture, 0 );
    		_gl.copyTexImage2D( 3553, level, glFormat, position.x, position.y, width, height, 0 );
    		state.unbindTexture();
    	};
    	this.copyTextureToTexture = function ( position, srcTexture, dstTexture, level ) {
    		if ( level === undefined ) level = 0;
    		const width = srcTexture.image.width;
    		const height = srcTexture.image.height;
    		const glFormat = utils.convert( dstTexture.format );
    		const glType = utils.convert( dstTexture.type );
    		textures.setTexture2D( dstTexture, 0 );
    		_gl.pixelStorei( 37440, dstTexture.flipY );
    		_gl.pixelStorei( 37441, dstTexture.premultiplyAlpha );
    		_gl.pixelStorei( 3317, dstTexture.unpackAlignment );
    		if ( srcTexture.isDataTexture ) {
    			_gl.texSubImage2D( 3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data );
    		} else {
    			if ( srcTexture.isCompressedTexture ) {
    				_gl.compressedTexSubImage2D( 3553, level, position.x, position.y, srcTexture.mipmaps[ 0 ].width, srcTexture.mipmaps[ 0 ].height, glFormat, srcTexture.mipmaps[ 0 ].data );
    			} else {
    				_gl.texSubImage2D( 3553, level, position.x, position.y, glFormat, glType, srcTexture.image );
    			}
    		}
    		if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( 3553 );
    		state.unbindTexture();
    	};
    	this.initTexture = function ( texture ) {
    		textures.setTexture2D( texture, 0 );
    		state.unbindTexture();
    	};
    	if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
    		__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
    	}
    }
    function WebGL1Renderer( parameters ) {
    	WebGLRenderer.call( this, parameters );
    }
    WebGL1Renderer.prototype = Object.assign( Object.create( WebGLRenderer.prototype ), {
    	constructor: WebGL1Renderer,
    	isWebGL1Renderer: true
    } );
    class FogExp2 {
    	constructor( color, density ) {
    		Object.defineProperty( this, 'isFogExp2', { value: true } );
    		this.name = '';
    		this.color = new Color( color );
    		this.density = ( density !== undefined ) ? density : 0.00025;
    	}
    	clone() {
    		return new FogExp2( this.color, this.density );
    	}
    	toJSON(  ) {
    		return {
    			type: 'FogExp2',
    			color: this.color.getHex(),
    			density: this.density
    		};
    	}
    }
    class Fog {
    	constructor( color, near, far ) {
    		Object.defineProperty( this, 'isFog', { value: true } );
    		this.name = '';
    		this.color = new Color( color );
    		this.near = ( near !== undefined ) ? near : 1;
    		this.far = ( far !== undefined ) ? far : 1000;
    	}
    	clone() {
    		return new Fog( this.color, this.near, this.far );
    	}
    	toJSON(  ) {
    		return {
    			type: 'Fog',
    			color: this.color.getHex(),
    			near: this.near,
    			far: this.far
    		};
    	}
    }
    class Scene extends Object3D {
    	constructor() {
    		super();
    		Object.defineProperty( this, 'isScene', { value: true } );
    		this.type = 'Scene';
    		this.background = null;
    		this.environment = null;
    		this.fog = null;
    		this.overrideMaterial = null;
    		this.autoUpdate = true;
    		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
    			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
    		}
    	}
    	copy( source, recursive ) {
    		super.copy( source, recursive );
    		if ( source.background !== null ) this.background = source.background.clone();
    		if ( source.environment !== null ) this.environment = source.environment.clone();
    		if ( source.fog !== null ) this.fog = source.fog.clone();
    		if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();
    		this.autoUpdate = source.autoUpdate;
    		this.matrixAutoUpdate = source.matrixAutoUpdate;
    		return this;
    	}
    	toJSON( meta ) {
    		const data = super.toJSON( meta );
    		if ( this.background !== null ) data.object.background = this.background.toJSON( meta );
    		if ( this.environment !== null ) data.object.environment = this.environment.toJSON( meta );
    		if ( this.fog !== null ) data.object.fog = this.fog.toJSON();
    		return data;
    	}
    }
    function InterleavedBuffer( array, stride ) {
    	this.array = array;
    	this.stride = stride;
    	this.count = array !== undefined ? array.length / stride : 0;
    	this.usage = StaticDrawUsage;
    	this.updateRange = { offset: 0, count: - 1 };
    	this.version = 0;
    	this.uuid = MathUtils.generateUUID();
    }
    Object.defineProperty( InterleavedBuffer.prototype, 'needsUpdate', {
    	set: function ( value ) {
    		if ( value === true ) this.version ++;
    	}
    } );
    Object.assign( InterleavedBuffer.prototype, {
    	isInterleavedBuffer: true,
    	onUploadCallback: function () {},
    	setUsage: function ( value ) {
    		this.usage = value;
    		return this;
    	},
    	copy: function ( source ) {
    		this.array = new source.array.constructor( source.array );
    		this.count = source.count;
    		this.stride = source.stride;
    		this.usage = source.usage;
    		return this;
    	},
    	copyAt: function ( index1, attribute, index2 ) {
    		index1 *= this.stride;
    		index2 *= attribute.stride;
    		for ( let i = 0, l = this.stride; i < l; i ++ ) {
    			this.array[ index1 + i ] = attribute.array[ index2 + i ];
    		}
    		return this;
    	},
    	set: function ( value, offset ) {
    		if ( offset === undefined ) offset = 0;
    		this.array.set( value, offset );
    		return this;
    	},
    	clone: function ( data ) {
    		if ( data.arrayBuffers === undefined ) {
    			data.arrayBuffers = {};
    		}
    		if ( this.array.buffer._uuid === undefined ) {
    			this.array.buffer._uuid = MathUtils.generateUUID();
    		}
    		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {
    			data.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;
    		}
    		const array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );
    		const ib = new InterleavedBuffer( array, this.stride );
    		ib.setUsage( this.usage );
    		return ib;
    	},
    	onUpload: function ( callback ) {
    		this.onUploadCallback = callback;
    		return this;
    	},
    	toJSON: function ( data ) {
    		if ( data.arrayBuffers === undefined ) {
    			data.arrayBuffers = {};
    		}
    		if ( this.array.buffer._uuid === undefined ) {
    			this.array.buffer._uuid = MathUtils.generateUUID();
    		}
    		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {
    			data.arrayBuffers[ this.array.buffer._uuid ] = Array.prototype.slice.call( new Uint32Array( this.array.buffer ) );
    		}
    		return {
    			uuid: this.uuid,
    			buffer: this.array.buffer._uuid,
    			type: this.array.constructor.name,
    			stride: this.stride
    		};
    	}
    } );
    const _vector$6 = new Vector3();
    function InterleavedBufferAttribute( interleavedBuffer, itemSize, offset, normalized ) {
    	this.name = '';
    	this.data = interleavedBuffer;
    	this.itemSize = itemSize;
    	this.offset = offset;
    	this.normalized = normalized === true;
    }
    Object.defineProperties( InterleavedBufferAttribute.prototype, {
    	count: {
    		get: function () {
    			return this.data.count;
    		}
    	},
    	array: {
    		get: function () {
    			return this.data.array;
    		}
    	},
    	needsUpdate: {
    		set: function ( value ) {
    			this.data.needsUpdate = value;
    		}
    	}
    } );
    Object.assign( InterleavedBufferAttribute.prototype, {
    	isInterleavedBufferAttribute: true,
    	applyMatrix4: function ( m ) {
    		for ( let i = 0, l = this.data.count; i < l; i ++ ) {
    			_vector$6.x = this.getX( i );
    			_vector$6.y = this.getY( i );
    			_vector$6.z = this.getZ( i );
    			_vector$6.applyMatrix4( m );
    			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );
    		}
    		return this;
    	},
    	setX: function ( index, x ) {
    		this.data.array[ index * this.data.stride + this.offset ] = x;
    		return this;
    	},
    	setY: function ( index, y ) {
    		this.data.array[ index * this.data.stride + this.offset + 1 ] = y;
    		return this;
    	},
    	setZ: function ( index, z ) {
    		this.data.array[ index * this.data.stride + this.offset + 2 ] = z;
    		return this;
    	},
    	setW: function ( index, w ) {
    		this.data.array[ index * this.data.stride + this.offset + 3 ] = w;
    		return this;
    	},
    	getX: function ( index ) {
    		return this.data.array[ index * this.data.stride + this.offset ];
    	},
    	getY: function ( index ) {
    		return this.data.array[ index * this.data.stride + this.offset + 1 ];
    	},
    	getZ: function ( index ) {
    		return this.data.array[ index * this.data.stride + this.offset + 2 ];
    	},
    	getW: function ( index ) {
    		return this.data.array[ index * this.data.stride + this.offset + 3 ];
    	},
    	setXY: function ( index, x, y ) {
    		index = index * this.data.stride + this.offset;
    		this.data.array[ index + 0 ] = x;
    		this.data.array[ index + 1 ] = y;
    		return this;
    	},
    	setXYZ: function ( index, x, y, z ) {
    		index = index * this.data.stride + this.offset;
    		this.data.array[ index + 0 ] = x;
    		this.data.array[ index + 1 ] = y;
    		this.data.array[ index + 2 ] = z;
    		return this;
    	},
    	setXYZW: function ( index, x, y, z, w ) {
    		index = index * this.data.stride + this.offset;
    		this.data.array[ index + 0 ] = x;
    		this.data.array[ index + 1 ] = y;
    		this.data.array[ index + 2 ] = z;
    		this.data.array[ index + 3 ] = w;
    		return this;
    	},
    	clone: function ( data ) {
    		if ( data === undefined ) {
    			console.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.' );
    			const array = [];
    			for ( let i = 0; i < this.count; i ++ ) {
    				const index = i * this.data.stride + this.offset;
    				for ( let j = 0; j < this.itemSize; j ++ ) {
    					array.push( this.data.array[ index + j ] );
    				}
    			}
    			return new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );
    		} else {
    			if ( data.interleavedBuffers === undefined ) {
    				data.interleavedBuffers = {};
    			}
    			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
    				data.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );
    			}
    			return new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );
    		}
    	},
    	toJSON: function ( data ) {
    		if ( data === undefined ) {
    			console.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.' );
    			const array = [];
    			for ( let i = 0; i < this.count; i ++ ) {
    				const index = i * this.data.stride + this.offset;
    				for ( let j = 0; j < this.itemSize; j ++ ) {
    					array.push( this.data.array[ index + j ] );
    				}
    			}
    			return {
    				itemSize: this.itemSize,
    				type: this.array.constructor.name,
    				array: array,
    				normalized: this.normalized
    			};
    		} else {
    			if ( data.interleavedBuffers === undefined ) {
    				data.interleavedBuffers = {};
    			}
    			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
    				data.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );
    			}
    			return {
    				isInterleavedBufferAttribute: true,
    				itemSize: this.itemSize,
    				data: this.data.uuid,
    				offset: this.offset,
    				normalized: this.normalized
    			};
    		}
    	}
    } );
    function SpriteMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'SpriteMaterial';
    	this.color = new Color( 0xffffff );
    	this.map = null;
    	this.alphaMap = null;
    	this.rotation = 0;
    	this.sizeAttenuation = true;
    	this.transparent = true;
    	this.setValues( parameters );
    }
    SpriteMaterial.prototype = Object.create( Material.prototype );
    SpriteMaterial.prototype.constructor = SpriteMaterial;
    SpriteMaterial.prototype.isSpriteMaterial = true;
    SpriteMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	this.map = source.map;
    	this.alphaMap = source.alphaMap;
    	this.rotation = source.rotation;
    	this.sizeAttenuation = source.sizeAttenuation;
    	return this;
    };
    let _geometry;
    const _intersectPoint = new Vector3();
    const _worldScale = new Vector3();
    const _mvPosition = new Vector3();
    const _alignedPosition = new Vector2();
    const _rotatedPosition = new Vector2();
    const _viewWorldMatrix = new Matrix4();
    const _vA$1 = new Vector3();
    const _vB$1 = new Vector3();
    const _vC$1 = new Vector3();
    const _uvA$1 = new Vector2();
    const _uvB$1 = new Vector2();
    const _uvC$1 = new Vector2();
    function Sprite( material ) {
    	Object3D.call( this );
    	this.type = 'Sprite';
    	if ( _geometry === undefined ) {
    		_geometry = new BufferGeometry();
    		const float32Array = new Float32Array( [
    			- 0.5, - 0.5, 0, 0, 0,
    			0.5, - 0.5, 0, 1, 0,
    			0.5, 0.5, 0, 1, 1,
    			- 0.5, 0.5, 0, 0, 1
    		] );
    		const interleavedBuffer = new InterleavedBuffer( float32Array, 5 );
    		_geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
    		_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
    		_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );
    	}
    	this.geometry = _geometry;
    	this.material = ( material !== undefined ) ? material : new SpriteMaterial();
    	this.center = new Vector2( 0.5, 0.5 );
    }
    Sprite.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Sprite,
    	isSprite: true,
    	raycast: function ( raycaster, intersects ) {
    		if ( raycaster.camera === null ) {
    			console.error( 'THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.' );
    		}
    		_worldScale.setFromMatrixScale( this.matrixWorld );
    		_viewWorldMatrix.copy( raycaster.camera.matrixWorld );
    		this.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );
    		_mvPosition.setFromMatrixPosition( this.modelViewMatrix );
    		if ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {
    			_worldScale.multiplyScalar( - _mvPosition.z );
    		}
    		const rotation = this.material.rotation;
    		let sin, cos;
    		if ( rotation !== 0 ) {
    			cos = Math.cos( rotation );
    			sin = Math.sin( rotation );
    		}
    		const center = this.center;
    		transformVertex( _vA$1.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
    		transformVertex( _vB$1.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
    		transformVertex( _vC$1.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
    		_uvA$1.set( 0, 0 );
    		_uvB$1.set( 1, 0 );
    		_uvC$1.set( 1, 1 );
    		let intersect = raycaster.ray.intersectTriangle( _vA$1, _vB$1, _vC$1, false, _intersectPoint );
    		if ( intersect === null ) {
    			transformVertex( _vB$1.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
    			_uvB$1.set( 0, 1 );
    			intersect = raycaster.ray.intersectTriangle( _vA$1, _vC$1, _vB$1, false, _intersectPoint );
    			if ( intersect === null ) {
    				return;
    			}
    		}
    		const distance = raycaster.ray.origin.distanceTo( _intersectPoint );
    		if ( distance < raycaster.near || distance > raycaster.far ) return;
    		intersects.push( {
    			distance: distance,
    			point: _intersectPoint.clone(),
    			uv: Triangle.getUV( _intersectPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() ),
    			face: null,
    			object: this
    		} );
    	},
    	copy: function ( source ) {
    		Object3D.prototype.copy.call( this, source );
    		if ( source.center !== undefined ) this.center.copy( source.center );
    		this.material = source.material;
    		return this;
    	}
    } );
    function transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {
    	_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );
    	if ( sin !== undefined ) {
    		_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );
    		_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );
    	} else {
    		_rotatedPosition.copy( _alignedPosition );
    	}
    	vertexPosition.copy( mvPosition );
    	vertexPosition.x += _rotatedPosition.x;
    	vertexPosition.y += _rotatedPosition.y;
    	vertexPosition.applyMatrix4( _viewWorldMatrix );
    }
    const _v1$4 = new Vector3();
    const _v2$2 = new Vector3();
    function LOD() {
    	Object3D.call( this );
    	this._currentLevel = 0;
    	this.type = 'LOD';
    	Object.defineProperties( this, {
    		levels: {
    			enumerable: true,
    			value: []
    		}
    	} );
    	this.autoUpdate = true;
    }
    LOD.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: LOD,
    	isLOD: true,
    	copy: function ( source ) {
    		Object3D.prototype.copy.call( this, source, false );
    		const levels = source.levels;
    		for ( let i = 0, l = levels.length; i < l; i ++ ) {
    			const level = levels[ i ];
    			this.addLevel( level.object.clone(), level.distance );
    		}
    		this.autoUpdate = source.autoUpdate;
    		return this;
    	},
    	addLevel: function ( object, distance ) {
    		if ( distance === undefined ) distance = 0;
    		distance = Math.abs( distance );
    		const levels = this.levels;
    		let l;
    		for ( l = 0; l < levels.length; l ++ ) {
    			if ( distance < levels[ l ].distance ) {
    				break;
    			}
    		}
    		levels.splice( l, 0, { distance: distance, object: object } );
    		this.add( object );
    		return this;
    	},
    	getCurrentLevel: function () {
    		return this._currentLevel;
    	},
    	getObjectForDistance: function ( distance ) {
    		const levels = this.levels;
    		if ( levels.length > 0 ) {
    			let i, l;
    			for ( i = 1, l = levels.length; i < l; i ++ ) {
    				if ( distance < levels[ i ].distance ) {
    					break;
    				}
    			}
    			return levels[ i - 1 ].object;
    		}
    		return null;
    	},
    	raycast: function ( raycaster, intersects ) {
    		const levels = this.levels;
    		if ( levels.length > 0 ) {
    			_v1$4.setFromMatrixPosition( this.matrixWorld );
    			const distance = raycaster.ray.origin.distanceTo( _v1$4 );
    			this.getObjectForDistance( distance ).raycast( raycaster, intersects );
    		}
    	},
    	update: function ( camera ) {
    		const levels = this.levels;
    		if ( levels.length > 1 ) {
    			_v1$4.setFromMatrixPosition( camera.matrixWorld );
    			_v2$2.setFromMatrixPosition( this.matrixWorld );
    			const distance = _v1$4.distanceTo( _v2$2 ) / camera.zoom;
    			levels[ 0 ].object.visible = true;
    			let i, l;
    			for ( i = 1, l = levels.length; i < l; i ++ ) {
    				if ( distance >= levels[ i ].distance ) {
    					levels[ i - 1 ].object.visible = false;
    					levels[ i ].object.visible = true;
    				} else {
    					break;
    				}
    			}
    			this._currentLevel = i - 1;
    			for ( ; i < l; i ++ ) {
    				levels[ i ].object.visible = false;
    			}
    		}
    	},
    	toJSON: function ( meta ) {
    		const data = Object3D.prototype.toJSON.call( this, meta );
    		if ( this.autoUpdate === false ) data.object.autoUpdate = false;
    		data.object.levels = [];
    		const levels = this.levels;
    		for ( let i = 0, l = levels.length; i < l; i ++ ) {
    			const level = levels[ i ];
    			data.object.levels.push( {
    				object: level.object.uuid,
    				distance: level.distance
    			} );
    		}
    		return data;
    	}
    } );
    function SkinnedMesh( geometry, material ) {
    	if ( geometry && geometry.isGeometry ) {
    		console.error( 'THREE.SkinnedMesh no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.' );
    	}
    	Mesh.call( this, geometry, material );
    	this.type = 'SkinnedMesh';
    	this.bindMode = 'attached';
    	this.bindMatrix = new Matrix4();
    	this.bindMatrixInverse = new Matrix4();
    }
    SkinnedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {
    	constructor: SkinnedMesh,
    	isSkinnedMesh: true,
    	copy: function ( source ) {
    		Mesh.prototype.copy.call( this, source );
    		this.bindMode = source.bindMode;
    		this.bindMatrix.copy( source.bindMatrix );
    		this.bindMatrixInverse.copy( source.bindMatrixInverse );
    		this.skeleton = source.skeleton;
    		return this;
    	},
    	bind: function ( skeleton, bindMatrix ) {
    		this.skeleton = skeleton;
    		if ( bindMatrix === undefined ) {
    			this.updateMatrixWorld( true );
    			this.skeleton.calculateInverses();
    			bindMatrix = this.matrixWorld;
    		}
    		this.bindMatrix.copy( bindMatrix );
    		this.bindMatrixInverse.getInverse( bindMatrix );
    	},
    	pose: function () {
    		this.skeleton.pose();
    	},
    	normalizeSkinWeights: function () {
    		const vector = new Vector4();
    		const skinWeight = this.geometry.attributes.skinWeight;
    		for ( let i = 0, l = skinWeight.count; i < l; i ++ ) {
    			vector.x = skinWeight.getX( i );
    			vector.y = skinWeight.getY( i );
    			vector.z = skinWeight.getZ( i );
    			vector.w = skinWeight.getW( i );
    			const scale = 1.0 / vector.manhattanLength();
    			if ( scale !== Infinity ) {
    				vector.multiplyScalar( scale );
    			} else {
    				vector.set( 1, 0, 0, 0 );
    			}
    			skinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );
    		}
    	},
    	updateMatrixWorld: function ( force ) {
    		Mesh.prototype.updateMatrixWorld.call( this, force );
    		if ( this.bindMode === 'attached' ) {
    			this.bindMatrixInverse.getInverse( this.matrixWorld );
    		} else if ( this.bindMode === 'detached' ) {
    			this.bindMatrixInverse.getInverse( this.bindMatrix );
    		} else {
    			console.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );
    		}
    	},
    	boneTransform: ( function () {
    		const basePosition = new Vector3();
    		const skinIndex = new Vector4();
    		const skinWeight = new Vector4();
    		const vector = new Vector3();
    		const matrix = new Matrix4();
    		return function ( index, target ) {
    			const skeleton = this.skeleton;
    			const geometry = this.geometry;
    			skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );
    			skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );
    			basePosition.fromBufferAttribute( geometry.attributes.position, index ).applyMatrix4( this.bindMatrix );
    			target.set( 0, 0, 0 );
    			for ( let i = 0; i < 4; i ++ ) {
    				const weight = skinWeight.getComponent( i );
    				if ( weight !== 0 ) {
    					const boneIndex = skinIndex.getComponent( i );
    					matrix.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );
    					target.addScaledVector( vector.copy( basePosition ).applyMatrix4( matrix ), weight );
    				}
    			}
    			return target.applyMatrix4( this.bindMatrixInverse );
    		};
    	}() )
    } );
    const _offsetMatrix = new Matrix4();
    const _identityMatrix = new Matrix4();
    function Skeleton( bones, boneInverses ) {
    	bones = bones || [];
    	this.bones = bones.slice( 0 );
    	this.boneMatrices = new Float32Array( this.bones.length * 16 );
    	this.frame = - 1;
    	if ( boneInverses === undefined ) {
    		this.calculateInverses();
    	} else {
    		if ( this.bones.length === boneInverses.length ) {
    			this.boneInverses = boneInverses.slice( 0 );
    		} else {
    			console.warn( 'THREE.Skeleton boneInverses is the wrong length.' );
    			this.boneInverses = [];
    			for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
    				this.boneInverses.push( new Matrix4() );
    			}
    		}
    	}
    }
    Object.assign( Skeleton.prototype, {
    	calculateInverses: function () {
    		this.boneInverses = [];
    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
    			const inverse = new Matrix4();
    			if ( this.bones[ i ] ) {
    				inverse.getInverse( this.bones[ i ].matrixWorld );
    			}
    			this.boneInverses.push( inverse );
    		}
    	},
    	pose: function () {
    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
    			const bone = this.bones[ i ];
    			if ( bone ) {
    				bone.matrixWorld.getInverse( this.boneInverses[ i ] );
    			}
    		}
    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
    			const bone = this.bones[ i ];
    			if ( bone ) {
    				if ( bone.parent && bone.parent.isBone ) {
    					bone.matrix.getInverse( bone.parent.matrixWorld );
    					bone.matrix.multiply( bone.matrixWorld );
    				} else {
    					bone.matrix.copy( bone.matrixWorld );
    				}
    				bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );
    			}
    		}
    	},
    	update: function () {
    		const bones = this.bones;
    		const boneInverses = this.boneInverses;
    		const boneMatrices = this.boneMatrices;
    		const boneTexture = this.boneTexture;
    		for ( let i = 0, il = bones.length; i < il; i ++ ) {
    			const matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;
    			_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
    			_offsetMatrix.toArray( boneMatrices, i * 16 );
    		}
    		if ( boneTexture !== undefined ) {
    			boneTexture.needsUpdate = true;
    		}
    	},
    	clone: function () {
    		return new Skeleton( this.bones, this.boneInverses );
    	},
    	getBoneByName: function ( name ) {
    		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
    			const bone = this.bones[ i ];
    			if ( bone.name === name ) {
    				return bone;
    			}
    		}
    		return undefined;
    	},
    	dispose: function ( ) {
    		if ( this.boneTexture ) {
    			this.boneTexture.dispose();
    			this.boneTexture = undefined;
    		}
    	}
    } );
    function Bone() {
    	Object3D.call( this );
    	this.type = 'Bone';
    }
    Bone.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Bone,
    	isBone: true
    } );
    const _instanceLocalMatrix = new Matrix4();
    const _instanceWorldMatrix = new Matrix4();
    const _instanceIntersects = [];
    const _mesh = new Mesh();
    function InstancedMesh( geometry, material, count ) {
    	Mesh.call( this, geometry, material );
    	this.instanceMatrix = new BufferAttribute( new Float32Array( count * 16 ), 16 );
    	this.instanceColor = null;
    	this.count = count;
    	this.frustumCulled = false;
    }
    InstancedMesh.prototype = Object.assign( Object.create( Mesh.prototype ), {
    	constructor: InstancedMesh,
    	isInstancedMesh: true,
    	copy: function ( source ) {
    		Mesh.prototype.copy.call( this, source );
    		this.instanceMatrix.copy( source.instanceMatrix );
    		this.count = source.count;
    		return this;
    	},
    	setColorAt: function ( index, color ) {
    		if ( this.instanceColor === null ) {
    			this.instanceColor = new BufferAttribute( new Float32Array( this.count * 3 ), 3 );
    		}
    		color.toArray( this.instanceColor.array, index * 3 );
    	},
    	getMatrixAt: function ( index, matrix ) {
    		matrix.fromArray( this.instanceMatrix.array, index * 16 );
    	},
    	raycast: function ( raycaster, intersects ) {
    		const matrixWorld = this.matrixWorld;
    		const raycastTimes = this.count;
    		_mesh.geometry = this.geometry;
    		_mesh.material = this.material;
    		if ( _mesh.material === undefined ) return;
    		for ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {
    			this.getMatrixAt( instanceId, _instanceLocalMatrix );
    			_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );
    			_mesh.matrixWorld = _instanceWorldMatrix;
    			_mesh.raycast( raycaster, _instanceIntersects );
    			for ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {
    				const intersect = _instanceIntersects[ i ];
    				intersect.instanceId = instanceId;
    				intersect.object = this;
    				intersects.push( intersect );
    			}
    			_instanceIntersects.length = 0;
    		}
    	},
    	setMatrixAt: function ( index, matrix ) {
    		matrix.toArray( this.instanceMatrix.array, index * 16 );
    	},
    	updateMorphTargets: function () {
    	}
    } );
    function LineBasicMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'LineBasicMaterial';
    	this.color = new Color( 0xffffff );
    	this.linewidth = 1;
    	this.linecap = 'round';
    	this.linejoin = 'round';
    	this.morphTargets = false;
    	this.setValues( parameters );
    }
    LineBasicMaterial.prototype = Object.create( Material.prototype );
    LineBasicMaterial.prototype.constructor = LineBasicMaterial;
    LineBasicMaterial.prototype.isLineBasicMaterial = true;
    LineBasicMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	this.linewidth = source.linewidth;
    	this.linecap = source.linecap;
    	this.linejoin = source.linejoin;
    	this.morphTargets = source.morphTargets;
    	return this;
    };
    const _start = new Vector3();
    const _end = new Vector3();
    const _inverseMatrix$1 = new Matrix4();
    const _ray$1 = new Ray();
    const _sphere$2 = new Sphere();
    function Line( geometry, material, mode ) {
    	if ( mode === 1 ) {
    		console.error( 'THREE.Line: parameter THREE.LinePieces no longer supported. Use THREE.LineSegments instead.' );
    	}
    	Object3D.call( this );
    	this.type = 'Line';
    	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
    	this.material = material !== undefined ? material : new LineBasicMaterial();
    	this.updateMorphTargets();
    }
    Line.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Line,
    	isLine: true,
    	copy: function ( source ) {
    		Object3D.prototype.copy.call( this, source );
    		this.material = source.material;
    		this.geometry = source.geometry;
    		return this;
    	},
    	computeLineDistances: function () {
    		const geometry = this.geometry;
    		if ( geometry.isBufferGeometry ) {
    			if ( geometry.index === null ) {
    				const positionAttribute = geometry.attributes.position;
    				const lineDistances = [ 0 ];
    				for ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {
    					_start.fromBufferAttribute( positionAttribute, i - 1 );
    					_end.fromBufferAttribute( positionAttribute, i );
    					lineDistances[ i ] = lineDistances[ i - 1 ];
    					lineDistances[ i ] += _start.distanceTo( _end );
    				}
    				geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );
    			} else {
    				console.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
    			}
    		} else if ( geometry.isGeometry ) {
    			const vertices = geometry.vertices;
    			const lineDistances = geometry.lineDistances;
    			lineDistances[ 0 ] = 0;
    			for ( let i = 1, l = vertices.length; i < l; i ++ ) {
    				lineDistances[ i ] = lineDistances[ i - 1 ];
    				lineDistances[ i ] += vertices[ i - 1 ].distanceTo( vertices[ i ] );
    			}
    		}
    		return this;
    	},
    	raycast: function ( raycaster, intersects ) {
    		const geometry = this.geometry;
    		const matrixWorld = this.matrixWorld;
    		const threshold = raycaster.params.Line.threshold;
    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
    		_sphere$2.copy( geometry.boundingSphere );
    		_sphere$2.applyMatrix4( matrixWorld );
    		_sphere$2.radius += threshold;
    		if ( raycaster.ray.intersectsSphere( _sphere$2 ) === false ) return;
    		_inverseMatrix$1.getInverse( matrixWorld );
    		_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );
    		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
    		const localThresholdSq = localThreshold * localThreshold;
    		const vStart = new Vector3();
    		const vEnd = new Vector3();
    		const interSegment = new Vector3();
    		const interRay = new Vector3();
    		const step = ( this && this.isLineSegments ) ? 2 : 1;
    		if ( geometry.isBufferGeometry ) {
    			const index = geometry.index;
    			const attributes = geometry.attributes;
    			const positions = attributes.position.array;
    			if ( index !== null ) {
    				const indices = index.array;
    				for ( let i = 0, l = indices.length - 1; i < l; i += step ) {
    					const a = indices[ i ];
    					const b = indices[ i + 1 ];
    					vStart.fromArray( positions, a * 3 );
    					vEnd.fromArray( positions, b * 3 );
    					const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );
    					if ( distSq > localThresholdSq ) continue;
    					interRay.applyMatrix4( this.matrixWorld );
    					const distance = raycaster.ray.origin.distanceTo( interRay );
    					if ( distance < raycaster.near || distance > raycaster.far ) continue;
    					intersects.push( {
    						distance: distance,
    						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
    						index: i,
    						face: null,
    						faceIndex: null,
    						object: this
    					} );
    				}
    			} else {
    				for ( let i = 0, l = positions.length / 3 - 1; i < l; i += step ) {
    					vStart.fromArray( positions, 3 * i );
    					vEnd.fromArray( positions, 3 * i + 3 );
    					const distSq = _ray$1.distanceSqToSegment( vStart, vEnd, interRay, interSegment );
    					if ( distSq > localThresholdSq ) continue;
    					interRay.applyMatrix4( this.matrixWorld );
    					const distance = raycaster.ray.origin.distanceTo( interRay );
    					if ( distance < raycaster.near || distance > raycaster.far ) continue;
    					intersects.push( {
    						distance: distance,
    						point: interSegment.clone().applyMatrix4( this.matrixWorld ),
    						index: i,
    						face: null,
    						faceIndex: null,
    						object: this
    					} );
    				}
    			}
    		} else if ( geometry.isGeometry ) {
    			const vertices = geometry.vertices;
    			const nbVertices = vertices.length;
    			for ( let i = 0; i < nbVertices - 1; i += step ) {
    				const distSq = _ray$1.distanceSqToSegment( vertices[ i ], vertices[ i + 1 ], interRay, interSegment );
    				if ( distSq > localThresholdSq ) continue;
    				interRay.applyMatrix4( this.matrixWorld );
    				const distance = raycaster.ray.origin.distanceTo( interRay );
    				if ( distance < raycaster.near || distance > raycaster.far ) continue;
    				intersects.push( {
    					distance: distance,
    					point: interSegment.clone().applyMatrix4( this.matrixWorld ),
    					index: i,
    					face: null,
    					faceIndex: null,
    					object: this
    				} );
    			}
    		}
    	},
    	updateMorphTargets: function () {
    		const geometry = this.geometry;
    		if ( geometry.isBufferGeometry ) {
    			const morphAttributes = geometry.morphAttributes;
    			const keys = Object.keys( morphAttributes );
    			if ( keys.length > 0 ) {
    				const morphAttribute = morphAttributes[ keys[ 0 ] ];
    				if ( morphAttribute !== undefined ) {
    					this.morphTargetInfluences = [];
    					this.morphTargetDictionary = {};
    					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
    						const name = morphAttribute[ m ].name || String( m );
    						this.morphTargetInfluences.push( 0 );
    						this.morphTargetDictionary[ name ] = m;
    					}
    				}
    			}
    		} else {
    			const morphTargets = geometry.morphTargets;
    			if ( morphTargets !== undefined && morphTargets.length > 0 ) {
    				console.error( 'THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );
    			}
    		}
    	}
    } );
    const _start$1 = new Vector3();
    const _end$1 = new Vector3();
    function LineSegments( geometry, material ) {
    	Line.call( this, geometry, material );
    	this.type = 'LineSegments';
    }
    LineSegments.prototype = Object.assign( Object.create( Line.prototype ), {
    	constructor: LineSegments,
    	isLineSegments: true,
    	computeLineDistances: function () {
    		const geometry = this.geometry;
    		if ( geometry.isBufferGeometry ) {
    			if ( geometry.index === null ) {
    				const positionAttribute = geometry.attributes.position;
    				const lineDistances = [];
    				for ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {
    					_start$1.fromBufferAttribute( positionAttribute, i );
    					_end$1.fromBufferAttribute( positionAttribute, i + 1 );
    					lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
    					lineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );
    				}
    				geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );
    			} else {
    				console.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
    			}
    		} else if ( geometry.isGeometry ) {
    			const vertices = geometry.vertices;
    			const lineDistances = geometry.lineDistances;
    			for ( let i = 0, l = vertices.length; i < l; i += 2 ) {
    				_start$1.copy( vertices[ i ] );
    				_end$1.copy( vertices[ i + 1 ] );
    				lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
    				lineDistances[ i + 1 ] = lineDistances[ i ] + _start$1.distanceTo( _end$1 );
    			}
    		}
    		return this;
    	}
    } );
    function LineLoop( geometry, material ) {
    	Line.call( this, geometry, material );
    	this.type = 'LineLoop';
    }
    LineLoop.prototype = Object.assign( Object.create( Line.prototype ), {
    	constructor: LineLoop,
    	isLineLoop: true,
    } );
    function PointsMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'PointsMaterial';
    	this.color = new Color( 0xffffff );
    	this.map = null;
    	this.alphaMap = null;
    	this.size = 1;
    	this.sizeAttenuation = true;
    	this.morphTargets = false;
    	this.setValues( parameters );
    }
    PointsMaterial.prototype = Object.create( Material.prototype );
    PointsMaterial.prototype.constructor = PointsMaterial;
    PointsMaterial.prototype.isPointsMaterial = true;
    PointsMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	this.map = source.map;
    	this.alphaMap = source.alphaMap;
    	this.size = source.size;
    	this.sizeAttenuation = source.sizeAttenuation;
    	this.morphTargets = source.morphTargets;
    	return this;
    };
    const _inverseMatrix$2 = new Matrix4();
    const _ray$2 = new Ray();
    const _sphere$3 = new Sphere();
    const _position$1 = new Vector3();
    function Points( geometry, material ) {
    	Object3D.call( this );
    	this.type = 'Points';
    	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
    	this.material = material !== undefined ? material : new PointsMaterial();
    	this.updateMorphTargets();
    }
    Points.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Points,
    	isPoints: true,
    	copy: function ( source ) {
    		Object3D.prototype.copy.call( this, source );
    		this.material = source.material;
    		this.geometry = source.geometry;
    		return this;
    	},
    	raycast: function ( raycaster, intersects ) {
    		const geometry = this.geometry;
    		const matrixWorld = this.matrixWorld;
    		const threshold = raycaster.params.Points.threshold;
    		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
    		_sphere$3.copy( geometry.boundingSphere );
    		_sphere$3.applyMatrix4( matrixWorld );
    		_sphere$3.radius += threshold;
    		if ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;
    		_inverseMatrix$2.getInverse( matrixWorld );
    		_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );
    		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
    		const localThresholdSq = localThreshold * localThreshold;
    		if ( geometry.isBufferGeometry ) {
    			const index = geometry.index;
    			const attributes = geometry.attributes;
    			const positions = attributes.position.array;
    			if ( index !== null ) {
    				const indices = index.array;
    				for ( let i = 0, il = indices.length; i < il; i ++ ) {
    					const a = indices[ i ];
    					_position$1.fromArray( positions, a * 3 );
    					testPoint( _position$1, a, localThresholdSq, matrixWorld, raycaster, intersects, this );
    				}
    			} else {
    				for ( let i = 0, l = positions.length / 3; i < l; i ++ ) {
    					_position$1.fromArray( positions, i * 3 );
    					testPoint( _position$1, i, localThresholdSq, matrixWorld, raycaster, intersects, this );
    				}
    			}
    		} else {
    			const vertices = geometry.vertices;
    			for ( let i = 0, l = vertices.length; i < l; i ++ ) {
    				testPoint( vertices[ i ], i, localThresholdSq, matrixWorld, raycaster, intersects, this );
    			}
    		}
    	},
    	updateMorphTargets: function () {
    		const geometry = this.geometry;
    		if ( geometry.isBufferGeometry ) {
    			const morphAttributes = geometry.morphAttributes;
    			const keys = Object.keys( morphAttributes );
    			if ( keys.length > 0 ) {
    				const morphAttribute = morphAttributes[ keys[ 0 ] ];
    				if ( morphAttribute !== undefined ) {
    					this.morphTargetInfluences = [];
    					this.morphTargetDictionary = {};
    					for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
    						const name = morphAttribute[ m ].name || String( m );
    						this.morphTargetInfluences.push( 0 );
    						this.morphTargetDictionary[ name ] = m;
    					}
    				}
    			}
    		} else {
    			const morphTargets = geometry.morphTargets;
    			if ( morphTargets !== undefined && morphTargets.length > 0 ) {
    				console.error( 'THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.' );
    			}
    		}
    	}
    } );
    function testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {
    	const rayPointDistanceSq = _ray$2.distanceSqToPoint( point );
    	if ( rayPointDistanceSq < localThresholdSq ) {
    		const intersectPoint = new Vector3();
    		_ray$2.closestPointToPoint( point, intersectPoint );
    		intersectPoint.applyMatrix4( matrixWorld );
    		const distance = raycaster.ray.origin.distanceTo( intersectPoint );
    		if ( distance < raycaster.near || distance > raycaster.far ) return;
    		intersects.push( {
    			distance: distance,
    			distanceToRay: Math.sqrt( rayPointDistanceSq ),
    			point: intersectPoint,
    			index: index,
    			face: null,
    			object: object
    		} );
    	}
    }
    function VideoTexture( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
    	Texture.call( this, video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
    	this.format = format !== undefined ? format : RGBFormat;
    	this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
    	this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
    	this.generateMipmaps = false;
    	const scope = this;
    	function updateVideo() {
    		scope.needsUpdate = true;
    		video.requestVideoFrameCallback( updateVideo );
    	}
    	if ( 'requestVideoFrameCallback' in video ) {
    		video.requestVideoFrameCallback( updateVideo );
    	}
    }
    VideoTexture.prototype = Object.assign( Object.create( Texture.prototype ), {
    	constructor: VideoTexture,
    	isVideoTexture: true,
    	update: function () {
    		const video = this.image;
    		const hasVideoFrameCallback = 'requestVideoFrameCallback' in video;
    		if ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {
    			this.needsUpdate = true;
    		}
    	}
    } );
    function CompressedTexture( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding ) {
    	Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding );
    	this.image = { width: width, height: height };
    	this.mipmaps = mipmaps;
    	this.flipY = false;
    	this.generateMipmaps = false;
    }
    CompressedTexture.prototype = Object.create( Texture.prototype );
    CompressedTexture.prototype.constructor = CompressedTexture;
    CompressedTexture.prototype.isCompressedTexture = true;
    function CanvasTexture( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
    	Texture.call( this, canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
    	this.needsUpdate = true;
    }
    CanvasTexture.prototype = Object.create( Texture.prototype );
    CanvasTexture.prototype.constructor = CanvasTexture;
    CanvasTexture.prototype.isCanvasTexture = true;
    function DepthTexture( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format ) {
    	format = format !== undefined ? format : DepthFormat;
    	if ( format !== DepthFormat && format !== DepthStencilFormat ) {
    		throw new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );
    	}
    	if ( type === undefined && format === DepthFormat ) type = UnsignedShortType;
    	if ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;
    	Texture.call( this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
    	this.image = { width: width, height: height };
    	this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
    	this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
    	this.flipY = false;
    	this.generateMipmaps	= false;
    }
    DepthTexture.prototype = Object.create( Texture.prototype );
    DepthTexture.prototype.constructor = DepthTexture;
    DepthTexture.prototype.isDepthTexture = true;
    class WireframeGeometry extends BufferGeometry {
    	constructor( geometry ) {
    		super();
    		this.type = 'WireframeGeometry';
    		const vertices = [];
    		const edge = [ 0, 0 ], edges = {};
    		const keys = [ 'a', 'b', 'c' ];
    		if ( geometry && geometry.isGeometry ) {
    			const faces = geometry.faces;
    			for ( let i = 0, l = faces.length; i < l; i ++ ) {
    				const face = faces[ i ];
    				for ( let j = 0; j < 3; j ++ ) {
    					const edge1 = face[ keys[ j ] ];
    					const edge2 = face[ keys[ ( j + 1 ) % 3 ] ];
    					edge[ 0 ] = Math.min( edge1, edge2 );
    					edge[ 1 ] = Math.max( edge1, edge2 );
    					const key = edge[ 0 ] + ',' + edge[ 1 ];
    					if ( edges[ key ] === undefined ) {
    						edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };
    					}
    				}
    			}
    			for ( const key in edges ) {
    				const e = edges[ key ];
    				let vertex = geometry.vertices[ e.index1 ];
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				vertex = geometry.vertices[ e.index2 ];
    				vertices.push( vertex.x, vertex.y, vertex.z );
    			}
    		} else if ( geometry && geometry.isBufferGeometry ) {
    			const vertex = new Vector3();
    			if ( geometry.index !== null ) {
    				const position = geometry.attributes.position;
    				const indices = geometry.index;
    				let groups = geometry.groups;
    				if ( groups.length === 0 ) {
    					groups = [ { start: 0, count: indices.count, materialIndex: 0 } ];
    				}
    				for ( let o = 0, ol = groups.length; o < ol; ++ o ) {
    					const group = groups[ o ];
    					const start = group.start;
    					const count = group.count;
    					for ( let i = start, l = ( start + count ); i < l; i += 3 ) {
    						for ( let j = 0; j < 3; j ++ ) {
    							const edge1 = indices.getX( i + j );
    							const edge2 = indices.getX( i + ( j + 1 ) % 3 );
    							edge[ 0 ] = Math.min( edge1, edge2 );
    							edge[ 1 ] = Math.max( edge1, edge2 );
    							const key = edge[ 0 ] + ',' + edge[ 1 ];
    							if ( edges[ key ] === undefined ) {
    								edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ] };
    							}
    						}
    					}
    				}
    				for ( const key in edges ) {
    					const e = edges[ key ];
    					vertex.fromBufferAttribute( position, e.index1 );
    					vertices.push( vertex.x, vertex.y, vertex.z );
    					vertex.fromBufferAttribute( position, e.index2 );
    					vertices.push( vertex.x, vertex.y, vertex.z );
    				}
    			} else {
    				const position = geometry.attributes.position;
    				for ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {
    					for ( let j = 0; j < 3; j ++ ) {
    						const index1 = 3 * i + j;
    						vertex.fromBufferAttribute( position, index1 );
    						vertices.push( vertex.x, vertex.y, vertex.z );
    						const index2 = 3 * i + ( ( j + 1 ) % 3 );
    						vertex.fromBufferAttribute( position, index2 );
    						vertices.push( vertex.x, vertex.y, vertex.z );
    					}
    				}
    			}
    		}
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    	}
    }
    function ParametricGeometry( func, slices, stacks ) {
    	Geometry.call( this );
    	this.type = 'ParametricGeometry';
    	this.parameters = {
    		func: func,
    		slices: slices,
    		stacks: stacks
    	};
    	this.fromBufferGeometry( new ParametricBufferGeometry( func, slices, stacks ) );
    	this.mergeVertices();
    }
    ParametricGeometry.prototype = Object.create( Geometry.prototype );
    ParametricGeometry.prototype.constructor = ParametricGeometry;
    function ParametricBufferGeometry( func, slices, stacks ) {
    	BufferGeometry.call( this );
    	this.type = 'ParametricBufferGeometry';
    	this.parameters = {
    		func: func,
    		slices: slices,
    		stacks: stacks
    	};
    	const indices = [];
    	const vertices = [];
    	const normals = [];
    	const uvs = [];
    	const EPS = 0.00001;
    	const normal = new Vector3();
    	const p0 = new Vector3(), p1 = new Vector3();
    	const pu = new Vector3(), pv = new Vector3();
    	if ( func.length < 3 ) {
    		console.error( 'THREE.ParametricGeometry: Function must now modify a Vector3 as third parameter.' );
    	}
    	const sliceCount = slices + 1;
    	for ( let i = 0; i <= stacks; i ++ ) {
    		const v = i / stacks;
    		for ( let j = 0; j <= slices; j ++ ) {
    			const u = j / slices;
    			func( u, v, p0 );
    			vertices.push( p0.x, p0.y, p0.z );
    			if ( u - EPS >= 0 ) {
    				func( u - EPS, v, p1 );
    				pu.subVectors( p0, p1 );
    			} else {
    				func( u + EPS, v, p1 );
    				pu.subVectors( p1, p0 );
    			}
    			if ( v - EPS >= 0 ) {
    				func( u, v - EPS, p1 );
    				pv.subVectors( p0, p1 );
    			} else {
    				func( u, v + EPS, p1 );
    				pv.subVectors( p1, p0 );
    			}
    			normal.crossVectors( pu, pv ).normalize();
    			normals.push( normal.x, normal.y, normal.z );
    			uvs.push( u, v );
    		}
    	}
    	for ( let i = 0; i < stacks; i ++ ) {
    		for ( let j = 0; j < slices; j ++ ) {
    			const a = i * sliceCount + j;
    			const b = i * sliceCount + j + 1;
    			const c = ( i + 1 ) * sliceCount + j + 1;
    			const d = ( i + 1 ) * sliceCount + j;
    			indices.push( a, b, d );
    			indices.push( b, c, d );
    		}
    	}
    	this.setIndex( indices );
    	this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    	this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    	this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    }
    ParametricBufferGeometry.prototype = Object.create( BufferGeometry.prototype );
    ParametricBufferGeometry.prototype.constructor = ParametricBufferGeometry;
    class PolyhedronGeometry extends Geometry {
    	constructor( vertices, indices, radius, detail ) {
    		super();
    		this.type = 'PolyhedronGeometry';
    		this.parameters = {
    			vertices: vertices,
    			indices: indices,
    			radius: radius,
    			detail: detail
    		};
    		this.fromBufferGeometry( new PolyhedronBufferGeometry( vertices, indices, radius, detail ) );
    		this.mergeVertices();
    	}
    }
    class PolyhedronBufferGeometry extends BufferGeometry {
    	constructor( vertices, indices, radius, detail ) {
    		super();
    		this.type = 'PolyhedronBufferGeometry';
    		this.parameters = {
    			vertices: vertices,
    			indices: indices,
    			radius: radius,
    			detail: detail
    		};
    		radius = radius || 1;
    		detail = detail || 0;
    		const vertexBuffer = [];
    		const uvBuffer = [];
    		subdivide( detail );
    		applyRadius( radius );
    		generateUVs();
    		this.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );
    		if ( detail === 0 ) {
    			this.computeVertexNormals();
    		} else {
    			this.normalizeNormals();
    		}
    		function subdivide( detail ) {
    			const a = new Vector3();
    			const b = new Vector3();
    			const c = new Vector3();
    			for ( let i = 0; i < indices.length; i += 3 ) {
    				getVertexByIndex( indices[ i + 0 ], a );
    				getVertexByIndex( indices[ i + 1 ], b );
    				getVertexByIndex( indices[ i + 2 ], c );
    				subdivideFace( a, b, c, detail );
    			}
    		}
    		function subdivideFace( a, b, c, detail ) {
    			const cols = Math.pow( 2, detail );
    			const v = [];
    			for ( let i = 0; i <= cols; i ++ ) {
    				v[ i ] = [];
    				const aj = a.clone().lerp( c, i / cols );
    				const bj = b.clone().lerp( c, i / cols );
    				const rows = cols - i;
    				for ( let j = 0; j <= rows; j ++ ) {
    					if ( j === 0 && i === cols ) {
    						v[ i ][ j ] = aj;
    					} else {
    						v[ i ][ j ] = aj.clone().lerp( bj, j / rows );
    					}
    				}
    			}
    			for ( let i = 0; i < cols; i ++ ) {
    				for ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {
    					const k = Math.floor( j / 2 );
    					if ( j % 2 === 0 ) {
    						pushVertex( v[ i ][ k + 1 ] );
    						pushVertex( v[ i + 1 ][ k ] );
    						pushVertex( v[ i ][ k ] );
    					} else {
    						pushVertex( v[ i ][ k + 1 ] );
    						pushVertex( v[ i + 1 ][ k + 1 ] );
    						pushVertex( v[ i + 1 ][ k ] );
    					}
    				}
    			}
    		}
    		function applyRadius( radius ) {
    			const vertex = new Vector3();
    			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {
    				vertex.x = vertexBuffer[ i + 0 ];
    				vertex.y = vertexBuffer[ i + 1 ];
    				vertex.z = vertexBuffer[ i + 2 ];
    				vertex.normalize().multiplyScalar( radius );
    				vertexBuffer[ i + 0 ] = vertex.x;
    				vertexBuffer[ i + 1 ] = vertex.y;
    				vertexBuffer[ i + 2 ] = vertex.z;
    			}
    		}
    		function generateUVs() {
    			const vertex = new Vector3();
    			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {
    				vertex.x = vertexBuffer[ i + 0 ];
    				vertex.y = vertexBuffer[ i + 1 ];
    				vertex.z = vertexBuffer[ i + 2 ];
    				const u = azimuth( vertex ) / 2 / Math.PI + 0.5;
    				const v = inclination( vertex ) / Math.PI + 0.5;
    				uvBuffer.push( u, 1 - v );
    			}
    			correctUVs();
    			correctSeam();
    		}
    		function correctSeam() {
    			for ( let i = 0; i < uvBuffer.length; i += 6 ) {
    				const x0 = uvBuffer[ i + 0 ];
    				const x1 = uvBuffer[ i + 2 ];
    				const x2 = uvBuffer[ i + 4 ];
    				const max = Math.max( x0, x1, x2 );
    				const min = Math.min( x0, x1, x2 );
    				if ( max > 0.9 && min < 0.1 ) {
    					if ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;
    					if ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;
    					if ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;
    				}
    			}
    		}
    		function pushVertex( vertex ) {
    			vertexBuffer.push( vertex.x, vertex.y, vertex.z );
    		}
    		function getVertexByIndex( index, vertex ) {
    			const stride = index * 3;
    			vertex.x = vertices[ stride + 0 ];
    			vertex.y = vertices[ stride + 1 ];
    			vertex.z = vertices[ stride + 2 ];
    		}
    		function correctUVs() {
    			const a = new Vector3();
    			const b = new Vector3();
    			const c = new Vector3();
    			const centroid = new Vector3();
    			const uvA = new Vector2();
    			const uvB = new Vector2();
    			const uvC = new Vector2();
    			for ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {
    				a.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );
    				b.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );
    				c.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );
    				uvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );
    				uvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );
    				uvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );
    				centroid.copy( a ).add( b ).add( c ).divideScalar( 3 );
    				const azi = azimuth( centroid );
    				correctUV( uvA, j + 0, a, azi );
    				correctUV( uvB, j + 2, b, azi );
    				correctUV( uvC, j + 4, c, azi );
    			}
    		}
    		function correctUV( uv, stride, vector, azimuth ) {
    			if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {
    				uvBuffer[ stride ] = uv.x - 1;
    			}
    			if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {
    				uvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;
    			}
    		}
    		function azimuth( vector ) {
    			return Math.atan2( vector.z, - vector.x );
    		}
    		function inclination( vector ) {
    			return Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );
    		}
    	}
    }
    class TetrahedronGeometry extends Geometry {
    	constructor( radius, detail ) {
    		super();
    		this.type = 'TetrahedronGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    		this.fromBufferGeometry( new TetrahedronBufferGeometry( radius, detail ) );
    		this.mergeVertices();
    	}
    }
    class TetrahedronBufferGeometry extends PolyhedronBufferGeometry {
    	constructor( radius, detail ) {
    		const vertices = [
    			1, 1, 1, 	- 1, - 1, 1, 	- 1, 1, - 1, 	1, - 1, - 1
    		];
    		const indices = [
    			2, 1, 0, 	0, 3, 2,	1, 3, 0,	2, 3, 1
    		];
    		super( vertices, indices, radius, detail );
    		this.type = 'TetrahedronBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    	}
    }
    class OctahedronGeometry extends Geometry {
    	constructor( radius, detail ) {
    		super();
    		this.type = 'OctahedronGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    		this.fromBufferGeometry( new OctahedronBufferGeometry( radius, detail ) );
    		this.mergeVertices();
    	}
    }
    class OctahedronBufferGeometry extends PolyhedronBufferGeometry {
    	constructor( radius, detail ) {
    		const vertices = [
    			1, 0, 0, 	- 1, 0, 0,	0, 1, 0,
    			0, - 1, 0, 	0, 0, 1,	0, 0, - 1
    		];
    		const indices = [
    			0, 2, 4,	0, 4, 3,	0, 3, 5,
    			0, 5, 2,	1, 2, 5,	1, 5, 3,
    			1, 3, 4,	1, 4, 2
    		];
    		super( vertices, indices, radius, detail );
    		this.type = 'OctahedronBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    	}
    }
    class IcosahedronGeometry extends Geometry {
    	constructor( radius, detail ) {
    		super();
    		this.type = 'IcosahedronGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    		this.fromBufferGeometry( new IcosahedronBufferGeometry( radius, detail ) );
    		this.mergeVertices();
    	}
    }
    class IcosahedronBufferGeometry extends PolyhedronBufferGeometry {
    	constructor( radius, detail ) {
    		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
    		const vertices = [
    			- 1, t, 0, 	1, t, 0, 	- 1, - t, 0, 	1, - t, 0,
    			0, - 1, t, 	0, 1, t,	0, - 1, - t, 	0, 1, - t,
    			t, 0, - 1, 	t, 0, 1, 	- t, 0, - 1, 	- t, 0, 1
    		];
    		const indices = [
    			0, 11, 5, 	0, 5, 1, 	0, 1, 7, 	0, 7, 10, 	0, 10, 11,
    			1, 5, 9, 	5, 11, 4,	11, 10, 2,	10, 7, 6,	7, 1, 8,
    			3, 9, 4, 	3, 4, 2,	3, 2, 6,	3, 6, 8,	3, 8, 9,
    			4, 9, 5, 	2, 4, 11,	6, 2, 10,	8, 6, 7,	9, 8, 1
    		];
    		super( vertices, indices, radius, detail );
    		this.type = 'IcosahedronBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    	}
    }
    class DodecahedronGeometry extends Geometry {
    	constructor( radius, detail ) {
    		super();
    		this.type = 'DodecahedronGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    		this.fromBufferGeometry( new DodecahedronBufferGeometry( radius, detail ) );
    		this.mergeVertices();
    	}
    }
    class DodecahedronBufferGeometry extends PolyhedronBufferGeometry {
    	constructor( radius, detail ) {
    		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
    		const r = 1 / t;
    		const vertices = [
    			- 1, - 1, - 1,	- 1, - 1, 1,
    			- 1, 1, - 1, - 1, 1, 1,
    			1, - 1, - 1, 1, - 1, 1,
    			1, 1, - 1, 1, 1, 1,
    			0, - r, - t, 0, - r, t,
    			0, r, - t, 0, r, t,
    			- r, - t, 0, - r, t, 0,
    			r, - t, 0, r, t, 0,
    			- t, 0, - r, t, 0, - r,
    			- t, 0, r, t, 0, r
    		];
    		const indices = [
    			3, 11, 7, 	3, 7, 15, 	3, 15, 13,
    			7, 19, 17, 	7, 17, 6, 	7, 6, 15,
    			17, 4, 8, 	17, 8, 10, 	17, 10, 6,
    			8, 0, 16, 	8, 16, 2, 	8, 2, 10,
    			0, 12, 1, 	0, 1, 18, 	0, 18, 16,
    			6, 10, 2, 	6, 2, 13, 	6, 13, 15,
    			2, 16, 18, 	2, 18, 3, 	2, 3, 13,
    			18, 1, 9, 	18, 9, 11, 	18, 11, 3,
    			4, 14, 12, 	4, 12, 0, 	4, 0, 8,
    			11, 9, 5, 	11, 5, 19, 	11, 19, 7,
    			19, 5, 14, 	19, 14, 4, 	19, 4, 17,
    			1, 12, 14, 	1, 14, 5, 	1, 5, 9
    		];
    		super( vertices, indices, radius, detail );
    		this.type = 'DodecahedronBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			detail: detail
    		};
    	}
    }
    class TubeGeometry extends Geometry {
    	constructor( path, tubularSegments, radius, radialSegments, closed, taper ) {
    		super();
    		this.type = 'TubeGeometry';
    		this.parameters = {
    			path: path,
    			tubularSegments: tubularSegments,
    			radius: radius,
    			radialSegments: radialSegments,
    			closed: closed
    		};
    		if ( taper !== undefined ) console.warn( 'THREE.TubeGeometry: taper has been removed.' );
    		const bufferGeometry = new TubeBufferGeometry( path, tubularSegments, radius, radialSegments, closed );
    		this.tangents = bufferGeometry.tangents;
    		this.normals = bufferGeometry.normals;
    		this.binormals = bufferGeometry.binormals;
    		this.fromBufferGeometry( bufferGeometry );
    		this.mergeVertices();
    	}
    }
    class TubeBufferGeometry extends BufferGeometry {
    	constructor( path, tubularSegments, radius, radialSegments, closed ) {
    		super();
    		this.type = 'TubeBufferGeometry';
    		this.parameters = {
    			path: path,
    			tubularSegments: tubularSegments,
    			radius: radius,
    			radialSegments: radialSegments,
    			closed: closed
    		};
    		tubularSegments = tubularSegments || 64;
    		radius = radius || 1;
    		radialSegments = radialSegments || 8;
    		closed = closed || false;
    		const frames = path.computeFrenetFrames( tubularSegments, closed );
    		this.tangents = frames.tangents;
    		this.normals = frames.normals;
    		this.binormals = frames.binormals;
    		const vertex = new Vector3();
    		const normal = new Vector3();
    		const uv = new Vector2();
    		let P = new Vector3();
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		const indices = [];
    		generateBufferData();
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    		function generateBufferData() {
    			for ( let i = 0; i < tubularSegments; i ++ ) {
    				generateSegment( i );
    			}
    			generateSegment( ( closed === false ) ? tubularSegments : 0 );
    			generateUVs();
    			generateIndices();
    		}
    		function generateSegment( i ) {
    			P = path.getPointAt( i / tubularSegments, P );
    			const N = frames.normals[ i ];
    			const B = frames.binormals[ i ];
    			for ( let j = 0; j <= radialSegments; j ++ ) {
    				const v = j / radialSegments * Math.PI * 2;
    				const sin = Math.sin( v );
    				const cos = - Math.cos( v );
    				normal.x = ( cos * N.x + sin * B.x );
    				normal.y = ( cos * N.y + sin * B.y );
    				normal.z = ( cos * N.z + sin * B.z );
    				normal.normalize();
    				normals.push( normal.x, normal.y, normal.z );
    				vertex.x = P.x + radius * normal.x;
    				vertex.y = P.y + radius * normal.y;
    				vertex.z = P.z + radius * normal.z;
    				vertices.push( vertex.x, vertex.y, vertex.z );
    			}
    		}
    		function generateIndices() {
    			for ( let j = 1; j <= tubularSegments; j ++ ) {
    				for ( let i = 1; i <= radialSegments; i ++ ) {
    					const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
    					const b = ( radialSegments + 1 ) * j + ( i - 1 );
    					const c = ( radialSegments + 1 ) * j + i;
    					const d = ( radialSegments + 1 ) * ( j - 1 ) + i;
    					indices.push( a, b, d );
    					indices.push( b, c, d );
    				}
    			}
    		}
    		function generateUVs() {
    			for ( let i = 0; i <= tubularSegments; i ++ ) {
    				for ( let j = 0; j <= radialSegments; j ++ ) {
    					uv.x = i / tubularSegments;
    					uv.y = j / radialSegments;
    					uvs.push( uv.x, uv.y );
    				}
    			}
    		}
    	}
    	toJSON() {
    		const data = BufferGeometry.prototype.toJSON.call( this );
    		data.path = this.parameters.path.toJSON();
    		return data;
    	}
    }
    class TorusKnotGeometry extends Geometry {
    	constructor( radius, tube, tubularSegments, radialSegments, p, q, heightScale ) {
    		super();
    		this.type = 'TorusKnotGeometry';
    		this.parameters = {
    			radius: radius,
    			tube: tube,
    			tubularSegments: tubularSegments,
    			radialSegments: radialSegments,
    			p: p,
    			q: q
    		};
    		if ( heightScale !== undefined ) console.warn( 'THREE.TorusKnotGeometry: heightScale has been deprecated. Use .scale( x, y, z ) instead.' );
    		this.fromBufferGeometry( new TorusKnotBufferGeometry( radius, tube, tubularSegments, radialSegments, p, q ) );
    		this.mergeVertices();
    	}
    }
    class TorusKnotBufferGeometry extends BufferGeometry {
    	constructor( radius, tube, tubularSegments, radialSegments, p, q ) {
    		super();
    		this.type = 'TorusKnotBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			tube: tube,
    			tubularSegments: tubularSegments,
    			radialSegments: radialSegments,
    			p: p,
    			q: q
    		};
    		radius = radius || 1;
    		tube = tube || 0.4;
    		tubularSegments = Math.floor( tubularSegments ) || 64;
    		radialSegments = Math.floor( radialSegments ) || 8;
    		p = p || 2;
    		q = q || 3;
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		const vertex = new Vector3();
    		const normal = new Vector3();
    		const P1 = new Vector3();
    		const P2 = new Vector3();
    		const B = new Vector3();
    		const T = new Vector3();
    		const N = new Vector3();
    		for ( let i = 0; i <= tubularSegments; ++ i ) {
    			const u = i / tubularSegments * p * Math.PI * 2;
    			calculatePositionOnCurve( u, p, q, radius, P1 );
    			calculatePositionOnCurve( u + 0.01, p, q, radius, P2 );
    			T.subVectors( P2, P1 );
    			N.addVectors( P2, P1 );
    			B.crossVectors( T, N );
    			N.crossVectors( B, T );
    			B.normalize();
    			N.normalize();
    			for ( let j = 0; j <= radialSegments; ++ j ) {
    				const v = j / radialSegments * Math.PI * 2;
    				const cx = - tube * Math.cos( v );
    				const cy = tube * Math.sin( v );
    				vertex.x = P1.x + ( cx * N.x + cy * B.x );
    				vertex.y = P1.y + ( cx * N.y + cy * B.y );
    				vertex.z = P1.z + ( cx * N.z + cy * B.z );
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				normal.subVectors( vertex, P1 ).normalize();
    				normals.push( normal.x, normal.y, normal.z );
    				uvs.push( i / tubularSegments );
    				uvs.push( j / radialSegments );
    			}
    		}
    		for ( let j = 1; j <= tubularSegments; j ++ ) {
    			for ( let i = 1; i <= radialSegments; i ++ ) {
    				const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
    				const b = ( radialSegments + 1 ) * j + ( i - 1 );
    				const c = ( radialSegments + 1 ) * j + i;
    				const d = ( radialSegments + 1 ) * ( j - 1 ) + i;
    				indices.push( a, b, d );
    				indices.push( b, c, d );
    			}
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    		function calculatePositionOnCurve( u, p, q, radius, position ) {
    			const cu = Math.cos( u );
    			const su = Math.sin( u );
    			const quOverP = q / p * u;
    			const cs = Math.cos( quOverP );
    			position.x = radius * ( 2 + cs ) * 0.5 * cu;
    			position.y = radius * ( 2 + cs ) * su * 0.5;
    			position.z = radius * Math.sin( quOverP ) * 0.5;
    		}
    	}
    }
    class TorusGeometry extends Geometry {
    	constructor( radius, tube, radialSegments, tubularSegments, arc ) {
    		super();
    		this.type = 'TorusGeometry';
    		this.parameters = {
    			radius: radius,
    			tube: tube,
    			radialSegments: radialSegments,
    			tubularSegments: tubularSegments,
    			arc: arc
    		};
    		this.fromBufferGeometry( new TorusBufferGeometry( radius, tube, radialSegments, tubularSegments, arc ) );
    		this.mergeVertices();
    	}
    }
    class TorusBufferGeometry extends BufferGeometry {
    	constructor( radius, tube, radialSegments, tubularSegments, arc ) {
    		super();
    		this.type = 'TorusBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			tube: tube,
    			radialSegments: radialSegments,
    			tubularSegments: tubularSegments,
    			arc: arc
    		};
    		radius = radius || 1;
    		tube = tube || 0.4;
    		radialSegments = Math.floor( radialSegments ) || 8;
    		tubularSegments = Math.floor( tubularSegments ) || 6;
    		arc = arc || Math.PI * 2;
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		const center = new Vector3();
    		const vertex = new Vector3();
    		const normal = new Vector3();
    		for ( let j = 0; j <= radialSegments; j ++ ) {
    			for ( let i = 0; i <= tubularSegments; i ++ ) {
    				const u = i / tubularSegments * arc;
    				const v = j / radialSegments * Math.PI * 2;
    				vertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );
    				vertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );
    				vertex.z = tube * Math.sin( v );
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				center.x = radius * Math.cos( u );
    				center.y = radius * Math.sin( u );
    				normal.subVectors( vertex, center ).normalize();
    				normals.push( normal.x, normal.y, normal.z );
    				uvs.push( i / tubularSegments );
    				uvs.push( j / radialSegments );
    			}
    		}
    		for ( let j = 1; j <= radialSegments; j ++ ) {
    			for ( let i = 1; i <= tubularSegments; i ++ ) {
    				const a = ( tubularSegments + 1 ) * j + i - 1;
    				const b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;
    				const c = ( tubularSegments + 1 ) * ( j - 1 ) + i;
    				const d = ( tubularSegments + 1 ) * j + i;
    				indices.push( a, b, d );
    				indices.push( b, c, d );
    			}
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    	}
    }
    const Earcut = {
    	triangulate: function ( data, holeIndices, dim ) {
    		dim = dim || 2;
    		const hasHoles = holeIndices && holeIndices.length;
    		const outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;
    		let outerNode = linkedList( data, 0, outerLen, dim, true );
    		const triangles = [];
    		if ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;
    		let minX, minY, maxX, maxY, x, y, invSize;
    		if ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );
    		if ( data.length > 80 * dim ) {
    			minX = maxX = data[ 0 ];
    			minY = maxY = data[ 1 ];
    			for ( let i = dim; i < outerLen; i += dim ) {
    				x = data[ i ];
    				y = data[ i + 1 ];
    				if ( x < minX ) minX = x;
    				if ( y < minY ) minY = y;
    				if ( x > maxX ) maxX = x;
    				if ( y > maxY ) maxY = y;
    			}
    			invSize = Math.max( maxX - minX, maxY - minY );
    			invSize = invSize !== 0 ? 1 / invSize : 0;
    		}
    		earcutLinked( outerNode, triangles, dim, minX, minY, invSize );
    		return triangles;
    	}
    };
    function linkedList( data, start, end, dim, clockwise ) {
    	let i, last;
    	if ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {
    		for ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
    	} else {
    		for ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
    	}
    	if ( last && equals( last, last.next ) ) {
    		removeNode( last );
    		last = last.next;
    	}
    	return last;
    }
    function filterPoints( start, end ) {
    	if ( ! start ) return start;
    	if ( ! end ) end = start;
    	let p = start,
    		again;
    	do {
    		again = false;
    		if ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {
    			removeNode( p );
    			p = end = p.prev;
    			if ( p === p.next ) break;
    			again = true;
    		} else {
    			p = p.next;
    		}
    	} while ( again || p !== end );
    	return end;
    }
    function earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {
    	if ( ! ear ) return;
    	if ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );
    	let stop = ear,
    		prev, next;
    	while ( ear.prev !== ear.next ) {
    		prev = ear.prev;
    		next = ear.next;
    		if ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {
    			triangles.push( prev.i / dim );
    			triangles.push( ear.i / dim );
    			triangles.push( next.i / dim );
    			removeNode( ear );
    			ear = next.next;
    			stop = next.next;
    			continue;
    		}
    		ear = next;
    		if ( ear === stop ) {
    			if ( ! pass ) {
    				earcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );
    			} else if ( pass === 1 ) {
    				ear = cureLocalIntersections( filterPoints( ear ), triangles, dim );
    				earcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );
    			} else if ( pass === 2 ) {
    				splitEarcut( ear, triangles, dim, minX, minY, invSize );
    			}
    			break;
    		}
    	}
    }
    function isEar( ear ) {
    	const a = ear.prev,
    		b = ear,
    		c = ear.next;
    	if ( area( a, b, c ) >= 0 ) return false;
    	let p = ear.next.next;
    	while ( p !== ear.prev ) {
    		if ( pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
    			area( p.prev, p, p.next ) >= 0 ) return false;
    		p = p.next;
    	}
    	return true;
    }
    function isEarHashed( ear, minX, minY, invSize ) {
    	const a = ear.prev,
    		b = ear,
    		c = ear.next;
    	if ( area( a, b, c ) >= 0 ) return false;
    	const minTX = a.x < b.x ? ( a.x < c.x ? a.x : c.x ) : ( b.x < c.x ? b.x : c.x ),
    		minTY = a.y < b.y ? ( a.y < c.y ? a.y : c.y ) : ( b.y < c.y ? b.y : c.y ),
    		maxTX = a.x > b.x ? ( a.x > c.x ? a.x : c.x ) : ( b.x > c.x ? b.x : c.x ),
    		maxTY = a.y > b.y ? ( a.y > c.y ? a.y : c.y ) : ( b.y > c.y ? b.y : c.y );
    	const minZ = zOrder( minTX, minTY, minX, minY, invSize ),
    		maxZ = zOrder( maxTX, maxTY, minX, minY, invSize );
    	let p = ear.prevZ,
    		n = ear.nextZ;
    	while ( p && p.z >= minZ && n && n.z <= maxZ ) {
    		if ( p !== ear.prev && p !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
    			area( p.prev, p, p.next ) >= 0 ) return false;
    		p = p.prevZ;
    		if ( n !== ear.prev && n !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
    			area( n.prev, n, n.next ) >= 0 ) return false;
    		n = n.nextZ;
    	}
    	while ( p && p.z >= minZ ) {
    		if ( p !== ear.prev && p !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y ) &&
    			area( p.prev, p, p.next ) >= 0 ) return false;
    		p = p.prevZ;
    	}
    	while ( n && n.z <= maxZ ) {
    		if ( n !== ear.prev && n !== ear.next &&
    			pointInTriangle( a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y ) &&
    			area( n.prev, n, n.next ) >= 0 ) return false;
    		n = n.nextZ;
    	}
    	return true;
    }
    function cureLocalIntersections( start, triangles, dim ) {
    	let p = start;
    	do {
    		const a = p.prev,
    			b = p.next.next;
    		if ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {
    			triangles.push( a.i / dim );
    			triangles.push( p.i / dim );
    			triangles.push( b.i / dim );
    			removeNode( p );
    			removeNode( p.next );
    			p = start = b;
    		}
    		p = p.next;
    	} while ( p !== start );
    	return filterPoints( p );
    }
    function splitEarcut( start, triangles, dim, minX, minY, invSize ) {
    	let a = start;
    	do {
    		let b = a.next.next;
    		while ( b !== a.prev ) {
    			if ( a.i !== b.i && isValidDiagonal( a, b ) ) {
    				let c = splitPolygon( a, b );
    				a = filterPoints( a, a.next );
    				c = filterPoints( c, c.next );
    				earcutLinked( a, triangles, dim, minX, minY, invSize );
    				earcutLinked( c, triangles, dim, minX, minY, invSize );
    				return;
    			}
    			b = b.next;
    		}
    		a = a.next;
    	} while ( a !== start );
    }
    function eliminateHoles( data, holeIndices, outerNode, dim ) {
    	const queue = [];
    	let i, len, start, end, list;
    	for ( i = 0, len = holeIndices.length; i < len; i ++ ) {
    		start = holeIndices[ i ] * dim;
    		end = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;
    		list = linkedList( data, start, end, dim, false );
    		if ( list === list.next ) list.steiner = true;
    		queue.push( getLeftmost( list ) );
    	}
    	queue.sort( compareX );
    	for ( i = 0; i < queue.length; i ++ ) {
    		eliminateHole( queue[ i ], outerNode );
    		outerNode = filterPoints( outerNode, outerNode.next );
    	}
    	return outerNode;
    }
    function compareX( a, b ) {
    	return a.x - b.x;
    }
    function eliminateHole( hole, outerNode ) {
    	outerNode = findHoleBridge( hole, outerNode );
    	if ( outerNode ) {
    		const b = splitPolygon( outerNode, hole );
    		filterPoints( outerNode, outerNode.next );
    		filterPoints( b, b.next );
    	}
    }
    function findHoleBridge( hole, outerNode ) {
    	let p = outerNode;
    	const hx = hole.x;
    	const hy = hole.y;
    	let qx = - Infinity, m;
    	do {
    		if ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {
    			const x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );
    			if ( x <= hx && x > qx ) {
    				qx = x;
    				if ( x === hx ) {
    					if ( hy === p.y ) return p;
    					if ( hy === p.next.y ) return p.next;
    				}
    				m = p.x < p.next.x ? p : p.next;
    			}
    		}
    		p = p.next;
    	} while ( p !== outerNode );
    	if ( ! m ) return null;
    	if ( hx === qx ) return m;
    	const stop = m,
    		mx = m.x,
    		my = m.y;
    	let tanMin = Infinity, tan;
    	p = m;
    	do {
    		if ( hx >= p.x && p.x >= mx && hx !== p.x &&
    				pointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {
    			tan = Math.abs( hy - p.y ) / ( hx - p.x );
    			if ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {
    				m = p;
    				tanMin = tan;
    			}
    		}
    		p = p.next;
    	} while ( p !== stop );
    	return m;
    }
    function sectorContainsSector( m, p ) {
    	return area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;
    }
    function indexCurve( start, minX, minY, invSize ) {
    	let p = start;
    	do {
    		if ( p.z === null ) p.z = zOrder( p.x, p.y, minX, minY, invSize );
    		p.prevZ = p.prev;
    		p.nextZ = p.next;
    		p = p.next;
    	} while ( p !== start );
    	p.prevZ.nextZ = null;
    	p.prevZ = null;
    	sortLinked( p );
    }
    function sortLinked( list ) {
    	let i, p, q, e, tail, numMerges, pSize, qSize,
    		inSize = 1;
    	do {
    		p = list;
    		list = null;
    		tail = null;
    		numMerges = 0;
    		while ( p ) {
    			numMerges ++;
    			q = p;
    			pSize = 0;
    			for ( i = 0; i < inSize; i ++ ) {
    				pSize ++;
    				q = q.nextZ;
    				if ( ! q ) break;
    			}
    			qSize = inSize;
    			while ( pSize > 0 || ( qSize > 0 && q ) ) {
    				if ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {
    					e = p;
    					p = p.nextZ;
    					pSize --;
    				} else {
    					e = q;
    					q = q.nextZ;
    					qSize --;
    				}
    				if ( tail ) tail.nextZ = e;
    				else list = e;
    				e.prevZ = tail;
    				tail = e;
    			}
    			p = q;
    		}
    		tail.nextZ = null;
    		inSize *= 2;
    	} while ( numMerges > 1 );
    	return list;
    }
    function zOrder( x, y, minX, minY, invSize ) {
    	x = 32767 * ( x - minX ) * invSize;
    	y = 32767 * ( y - minY ) * invSize;
    	x = ( x | ( x << 8 ) ) & 0x00FF00FF;
    	x = ( x | ( x << 4 ) ) & 0x0F0F0F0F;
    	x = ( x | ( x << 2 ) ) & 0x33333333;
    	x = ( x | ( x << 1 ) ) & 0x55555555;
    	y = ( y | ( y << 8 ) ) & 0x00FF00FF;
    	y = ( y | ( y << 4 ) ) & 0x0F0F0F0F;
    	y = ( y | ( y << 2 ) ) & 0x33333333;
    	y = ( y | ( y << 1 ) ) & 0x55555555;
    	return x | ( y << 1 );
    }
    function getLeftmost( start ) {
    	let p = start,
    		leftmost = start;
    	do {
    		if ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;
    		p = p.next;
    	} while ( p !== start );
    	return leftmost;
    }
    function pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {
    	return ( cx - px ) * ( ay - py ) - ( ax - px ) * ( cy - py ) >= 0 &&
    			( ax - px ) * ( by - py ) - ( bx - px ) * ( ay - py ) >= 0 &&
    			( bx - px ) * ( cy - py ) - ( cx - px ) * ( by - py ) >= 0;
    }
    function isValidDiagonal( a, b ) {
    	return a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) &&
    		( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) &&
    		( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) ||
    		equals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 );
    }
    function area( p, q, r ) {
    	return ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );
    }
    function equals( p1, p2 ) {
    	return p1.x === p2.x && p1.y === p2.y;
    }
    function intersects( p1, q1, p2, q2 ) {
    	const o1 = sign( area( p1, q1, p2 ) );
    	const o2 = sign( area( p1, q1, q2 ) );
    	const o3 = sign( area( p2, q2, p1 ) );
    	const o4 = sign( area( p2, q2, q1 ) );
    	if ( o1 !== o2 && o3 !== o4 ) return true;
    	if ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true;
    	if ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true;
    	if ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true;
    	if ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true;
    	return false;
    }
    function onSegment( p, q, r ) {
    	return q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );
    }
    function sign( num ) {
    	return num > 0 ? 1 : num < 0 ? - 1 : 0;
    }
    function intersectsPolygon( a, b ) {
    	let p = a;
    	do {
    		if ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
    				intersects( p, p.next, a, b ) ) return true;
    		p = p.next;
    	} while ( p !== a );
    	return false;
    }
    function locallyInside( a, b ) {
    	return area( a.prev, a, a.next ) < 0 ?
    		area( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :
    		area( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;
    }
    function middleInside( a, b ) {
    	let p = a,
    		inside = false;
    	const px = ( a.x + b.x ) / 2,
    		py = ( a.y + b.y ) / 2;
    	do {
    		if ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&
    				( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )
    			inside = ! inside;
    		p = p.next;
    	} while ( p !== a );
    	return inside;
    }
    function splitPolygon( a, b ) {
    	const a2 = new Node( a.i, a.x, a.y ),
    		b2 = new Node( b.i, b.x, b.y ),
    		an = a.next,
    		bp = b.prev;
    	a.next = b;
    	b.prev = a;
    	a2.next = an;
    	an.prev = a2;
    	b2.next = a2;
    	a2.prev = b2;
    	bp.next = b2;
    	b2.prev = bp;
    	return b2;
    }
    function insertNode( i, x, y, last ) {
    	const p = new Node( i, x, y );
    	if ( ! last ) {
    		p.prev = p;
    		p.next = p;
    	} else {
    		p.next = last.next;
    		p.prev = last;
    		last.next.prev = p;
    		last.next = p;
    	}
    	return p;
    }
    function removeNode( p ) {
    	p.next.prev = p.prev;
    	p.prev.next = p.next;
    	if ( p.prevZ ) p.prevZ.nextZ = p.nextZ;
    	if ( p.nextZ ) p.nextZ.prevZ = p.prevZ;
    }
    function Node( i, x, y ) {
    	this.i = i;
    	this.x = x;
    	this.y = y;
    	this.prev = null;
    	this.next = null;
    	this.z = null;
    	this.prevZ = null;
    	this.nextZ = null;
    	this.steiner = false;
    }
    function signedArea( data, start, end, dim ) {
    	let sum = 0;
    	for ( let i = start, j = end - dim; i < end; i += dim ) {
    		sum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );
    		j = i;
    	}
    	return sum;
    }
    const ShapeUtils = {
    	area: function ( contour ) {
    		const n = contour.length;
    		let a = 0.0;
    		for ( let p = n - 1, q = 0; q < n; p = q ++ ) {
    			a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;
    		}
    		return a * 0.5;
    	},
    	isClockWise: function ( pts ) {
    		return ShapeUtils.area( pts ) < 0;
    	},
    	triangulateShape: function ( contour, holes ) {
    		const vertices = [];
    		const holeIndices = [];
    		const faces = [];
    		removeDupEndPts( contour );
    		addContour( vertices, contour );
    		let holeIndex = contour.length;
    		holes.forEach( removeDupEndPts );
    		for ( let i = 0; i < holes.length; i ++ ) {
    			holeIndices.push( holeIndex );
    			holeIndex += holes[ i ].length;
    			addContour( vertices, holes[ i ] );
    		}
    		const triangles = Earcut.triangulate( vertices, holeIndices );
    		for ( let i = 0; i < triangles.length; i += 3 ) {
    			faces.push( triangles.slice( i, i + 3 ) );
    		}
    		return faces;
    	}
    };
    function removeDupEndPts( points ) {
    	const l = points.length;
    	if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {
    		points.pop();
    	}
    }
    function addContour( vertices, contour ) {
    	for ( let i = 0; i < contour.length; i ++ ) {
    		vertices.push( contour[ i ].x );
    		vertices.push( contour[ i ].y );
    	}
    }
    class ExtrudeGeometry extends Geometry {
    	constructor( shapes, options ) {
    		super();
    		this.type = 'ExtrudeGeometry';
    		this.parameters = {
    			shapes: shapes,
    			options: options
    		};
    		this.fromBufferGeometry( new ExtrudeBufferGeometry( shapes, options ) );
    		this.mergeVertices();
    	}
    	toJSON() {
    		const data = super.toJSON();
    		const shapes = this.parameters.shapes;
    		const options = this.parameters.options;
    		return toJSON( shapes, options, data );
    	}
    }
    class ExtrudeBufferGeometry extends BufferGeometry {
    	constructor( shapes, options ) {
    		super();
    		this.type = 'ExtrudeBufferGeometry';
    		this.parameters = {
    			shapes: shapes,
    			options: options
    		};
    		shapes = Array.isArray( shapes ) ? shapes : [ shapes ];
    		const scope = this;
    		const verticesArray = [];
    		const uvArray = [];
    		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
    			const shape = shapes[ i ];
    			addShape( shape );
    		}
    		this.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );
    		this.computeVertexNormals();
    		function addShape( shape ) {
    			const placeholder = [];
    			const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
    			const steps = options.steps !== undefined ? options.steps : 1;
    			let depth = options.depth !== undefined ? options.depth : 100;
    			let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
    			let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6;
    			let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2;
    			let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
    			let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;
    			const extrudePath = options.extrudePath;
    			const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;
    			if ( options.amount !== undefined ) {
    				console.warn( 'THREE.ExtrudeBufferGeometry: amount has been renamed to depth.' );
    				depth = options.amount;
    			}
    			let extrudePts, extrudeByPath = false;
    			let splineTube, binormal, normal, position2;
    			if ( extrudePath ) {
    				extrudePts = extrudePath.getSpacedPoints( steps );
    				extrudeByPath = true;
    				bevelEnabled = false;
    				splineTube = extrudePath.computeFrenetFrames( steps, false );
    				binormal = new Vector3();
    				normal = new Vector3();
    				position2 = new Vector3();
    			}
    			if ( ! bevelEnabled ) {
    				bevelSegments = 0;
    				bevelThickness = 0;
    				bevelSize = 0;
    				bevelOffset = 0;
    			}
    			const shapePoints = shape.extractPoints( curveSegments );
    			let vertices = shapePoints.shape;
    			const holes = shapePoints.holes;
    			const reverse = ! ShapeUtils.isClockWise( vertices );
    			if ( reverse ) {
    				vertices = vertices.reverse();
    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
    					const ahole = holes[ h ];
    					if ( ShapeUtils.isClockWise( ahole ) ) {
    						holes[ h ] = ahole.reverse();
    					}
    				}
    			}
    			const faces = ShapeUtils.triangulateShape( vertices, holes );
    			const contour = vertices;
    			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
    				const ahole = holes[ h ];
    				vertices = vertices.concat( ahole );
    			}
    			function scalePt2( pt, vec, size ) {
    				if ( ! vec ) console.error( "THREE.ExtrudeGeometry: vec does not exist" );
    				return vec.clone().multiplyScalar( size ).add( pt );
    			}
    			const vlen = vertices.length, flen = faces.length;
    			function getBevelVec( inPt, inPrev, inNext ) {
    				let v_trans_x, v_trans_y, shrink_by;
    				const v_prev_x = inPt.x - inPrev.x,
    					v_prev_y = inPt.y - inPrev.y;
    				const v_next_x = inNext.x - inPt.x,
    					v_next_y = inNext.y - inPt.y;
    				const v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );
    				const collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );
    				if ( Math.abs( collinear0 ) > Number.EPSILON ) {
    					const v_prev_len = Math.sqrt( v_prev_lensq );
    					const v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );
    					const ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );
    					const ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );
    					const ptNextShift_x = ( inNext.x - v_next_y / v_next_len );
    					const ptNextShift_y = ( inNext.y + v_next_x / v_next_len );
    					const sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -
    							( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /
    						( v_prev_x * v_next_y - v_prev_y * v_next_x );
    					v_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );
    					v_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );
    					const v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );
    					if ( v_trans_lensq <= 2 ) {
    						return new Vector2( v_trans_x, v_trans_y );
    					} else {
    						shrink_by = Math.sqrt( v_trans_lensq / 2 );
    					}
    				} else {
    					let direction_eq = false;
    					if ( v_prev_x > Number.EPSILON ) {
    						if ( v_next_x > Number.EPSILON ) {
    							direction_eq = true;
    						}
    					} else {
    						if ( v_prev_x < - Number.EPSILON ) {
    							if ( v_next_x < - Number.EPSILON ) {
    								direction_eq = true;
    							}
    						} else {
    							if ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {
    								direction_eq = true;
    							}
    						}
    					}
    					if ( direction_eq ) {
    						v_trans_x = - v_prev_y;
    						v_trans_y = v_prev_x;
    						shrink_by = Math.sqrt( v_prev_lensq );
    					} else {
    						v_trans_x = v_prev_x;
    						v_trans_y = v_prev_y;
    						shrink_by = Math.sqrt( v_prev_lensq / 2 );
    					}
    				}
    				return new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );
    			}
    			const contourMovements = [];
    			for ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
    				if ( j === il ) j = 0;
    				if ( k === il ) k = 0;
    				contourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );
    			}
    			const holesMovements = [];
    			let oneHoleMovements, verticesMovements = contourMovements.concat();
    			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
    				const ahole = holes[ h ];
    				oneHoleMovements = [];
    				for ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
    					if ( j === il ) j = 0;
    					if ( k === il ) k = 0;
    					oneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );
    				}
    				holesMovements.push( oneHoleMovements );
    				verticesMovements = verticesMovements.concat( oneHoleMovements );
    			}
    			for ( let b = 0; b < bevelSegments; b ++ ) {
    				const t = b / bevelSegments;
    				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
    				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;
    				for ( let i = 0, il = contour.length; i < il; i ++ ) {
    					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
    					v( vert.x, vert.y, - z );
    				}
    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
    					const ahole = holes[ h ];
    					oneHoleMovements = holesMovements[ h ];
    					for ( let i = 0, il = ahole.length; i < il; i ++ ) {
    						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
    						v( vert.x, vert.y, - z );
    					}
    				}
    			}
    			const bs = bevelSize + bevelOffset;
    			for ( let i = 0; i < vlen; i ++ ) {
    				const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
    				if ( ! extrudeByPath ) {
    					v( vert.x, vert.y, 0 );
    				} else {
    					normal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );
    					binormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );
    					position2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );
    					v( position2.x, position2.y, position2.z );
    				}
    			}
    			for ( let s = 1; s <= steps; s ++ ) {
    				for ( let i = 0; i < vlen; i ++ ) {
    					const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
    					if ( ! extrudeByPath ) {
    						v( vert.x, vert.y, depth / steps * s );
    					} else {
    						normal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );
    						binormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );
    						position2.copy( extrudePts[ s ] ).add( normal ).add( binormal );
    						v( position2.x, position2.y, position2.z );
    					}
    				}
    			}
    			for ( let b = bevelSegments - 1; b >= 0; b -- ) {
    				const t = b / bevelSegments;
    				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
    				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;
    				for ( let i = 0, il = contour.length; i < il; i ++ ) {
    					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
    					v( vert.x, vert.y, depth + z );
    				}
    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
    					const ahole = holes[ h ];
    					oneHoleMovements = holesMovements[ h ];
    					for ( let i = 0, il = ahole.length; i < il; i ++ ) {
    						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
    						if ( ! extrudeByPath ) {
    							v( vert.x, vert.y, depth + z );
    						} else {
    							v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );
    						}
    					}
    				}
    			}
    			buildLidFaces();
    			buildSideFaces();
    			function buildLidFaces() {
    				const start = verticesArray.length / 3;
    				if ( bevelEnabled ) {
    					let layer = 0;
    					let offset = vlen * layer;
    					for ( let i = 0; i < flen; i ++ ) {
    						const face = faces[ i ];
    						f3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );
    					}
    					layer = steps + bevelSegments * 2;
    					offset = vlen * layer;
    					for ( let i = 0; i < flen; i ++ ) {
    						const face = faces[ i ];
    						f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );
    					}
    				} else {
    					for ( let i = 0; i < flen; i ++ ) {
    						const face = faces[ i ];
    						f3( face[ 2 ], face[ 1 ], face[ 0 ] );
    					}
    					for ( let i = 0; i < flen; i ++ ) {
    						const face = faces[ i ];
    						f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );
    					}
    				}
    				scope.addGroup( start, verticesArray.length / 3 - start, 0 );
    			}
    			function buildSideFaces() {
    				const start = verticesArray.length / 3;
    				let layeroffset = 0;
    				sidewalls( contour, layeroffset );
    				layeroffset += contour.length;
    				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
    					const ahole = holes[ h ];
    					sidewalls( ahole, layeroffset );
    					layeroffset += ahole.length;
    				}
    				scope.addGroup( start, verticesArray.length / 3 - start, 1 );
    			}
    			function sidewalls( contour, layeroffset ) {
    				let i = contour.length;
    				while ( -- i >= 0 ) {
    					const j = i;
    					let k = i - 1;
    					if ( k < 0 ) k = contour.length - 1;
    					for ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {
    						const slen1 = vlen * s;
    						const slen2 = vlen * ( s + 1 );
    						const a = layeroffset + j + slen1,
    							b = layeroffset + k + slen1,
    							c = layeroffset + k + slen2,
    							d = layeroffset + j + slen2;
    						f4( a, b, c, d );
    					}
    				}
    			}
    			function v( x, y, z ) {
    				placeholder.push( x );
    				placeholder.push( y );
    				placeholder.push( z );
    			}
    			function f3( a, b, c ) {
    				addVertex( a );
    				addVertex( b );
    				addVertex( c );
    				const nextIndex = verticesArray.length / 3;
    				const uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
    				addUV( uvs[ 0 ] );
    				addUV( uvs[ 1 ] );
    				addUV( uvs[ 2 ] );
    			}
    			function f4( a, b, c, d ) {
    				addVertex( a );
    				addVertex( b );
    				addVertex( d );
    				addVertex( b );
    				addVertex( c );
    				addVertex( d );
    				const nextIndex = verticesArray.length / 3;
    				const uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
    				addUV( uvs[ 0 ] );
    				addUV( uvs[ 1 ] );
    				addUV( uvs[ 3 ] );
    				addUV( uvs[ 1 ] );
    				addUV( uvs[ 2 ] );
    				addUV( uvs[ 3 ] );
    			}
    			function addVertex( index ) {
    				verticesArray.push( placeholder[ index * 3 + 0 ] );
    				verticesArray.push( placeholder[ index * 3 + 1 ] );
    				verticesArray.push( placeholder[ index * 3 + 2 ] );
    			}
    			function addUV( vector2 ) {
    				uvArray.push( vector2.x );
    				uvArray.push( vector2.y );
    			}
    		}
    	}
    	toJSON() {
    		const data = BufferGeometry.prototype.toJSON.call( this );
    		const shapes = this.parameters.shapes;
    		const options = this.parameters.options;
    		return toJSON( shapes, options, data );
    	}
    }
    const WorldUVGenerator = {
    	generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {
    		const a_x = vertices[ indexA * 3 ];
    		const a_y = vertices[ indexA * 3 + 1 ];
    		const b_x = vertices[ indexB * 3 ];
    		const b_y = vertices[ indexB * 3 + 1 ];
    		const c_x = vertices[ indexC * 3 ];
    		const c_y = vertices[ indexC * 3 + 1 ];
    		return [
    			new Vector2( a_x, a_y ),
    			new Vector2( b_x, b_y ),
    			new Vector2( c_x, c_y )
    		];
    	},
    	generateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {
    		const a_x = vertices[ indexA * 3 ];
    		const a_y = vertices[ indexA * 3 + 1 ];
    		const a_z = vertices[ indexA * 3 + 2 ];
    		const b_x = vertices[ indexB * 3 ];
    		const b_y = vertices[ indexB * 3 + 1 ];
    		const b_z = vertices[ indexB * 3 + 2 ];
    		const c_x = vertices[ indexC * 3 ];
    		const c_y = vertices[ indexC * 3 + 1 ];
    		const c_z = vertices[ indexC * 3 + 2 ];
    		const d_x = vertices[ indexD * 3 ];
    		const d_y = vertices[ indexD * 3 + 1 ];
    		const d_z = vertices[ indexD * 3 + 2 ];
    		if ( Math.abs( a_y - b_y ) < 0.01 ) {
    			return [
    				new Vector2( a_x, 1 - a_z ),
    				new Vector2( b_x, 1 - b_z ),
    				new Vector2( c_x, 1 - c_z ),
    				new Vector2( d_x, 1 - d_z )
    			];
    		} else {
    			return [
    				new Vector2( a_y, 1 - a_z ),
    				new Vector2( b_y, 1 - b_z ),
    				new Vector2( c_y, 1 - c_z ),
    				new Vector2( d_y, 1 - d_z )
    			];
    		}
    	}
    };
    function toJSON( shapes, options, data ) {
    	data.shapes = [];
    	if ( Array.isArray( shapes ) ) {
    		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
    			const shape = shapes[ i ];
    			data.shapes.push( shape.uuid );
    		}
    	} else {
    		data.shapes.push( shapes.uuid );
    	}
    	if ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();
    	return data;
    }
    class TextGeometry extends Geometry {
    	constructor( text, parameters ) {
    		super();
    		this.type = 'TextGeometry';
    		this.parameters = {
    			text: text,
    			parameters: parameters
    		};
    		this.fromBufferGeometry( new TextBufferGeometry( text, parameters ) );
    		this.mergeVertices();
    	}
    }
    class TextBufferGeometry extends ExtrudeBufferGeometry {
    	constructor( text, parameters ) {
    		parameters = parameters || {};
    		const font = parameters.font;
    		if ( ! ( font && font.isFont ) ) {
    			console.error( 'THREE.TextGeometry: font parameter is not an instance of THREE.Font.' );
    			return new Geometry();
    		}
    		const shapes = font.generateShapes( text, parameters.size );
    		parameters.depth = parameters.height !== undefined ? parameters.height : 50;
    		if ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;
    		if ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;
    		if ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;
    		super( shapes, parameters );
    		this.type = 'TextBufferGeometry';
    	}
    }
    class SphereGeometry extends Geometry {
    	constructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {
    		super();
    		this.type = 'SphereGeometry';
    		this.parameters = {
    			radius: radius,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments,
    			phiStart: phiStart,
    			phiLength: phiLength,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		this.fromBufferGeometry( new SphereBufferGeometry( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) );
    		this.mergeVertices();
    	}
    }
    class SphereBufferGeometry extends BufferGeometry {
    	constructor( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {
    		super();
    		this.type = 'SphereBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			widthSegments: widthSegments,
    			heightSegments: heightSegments,
    			phiStart: phiStart,
    			phiLength: phiLength,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		radius = radius || 1;
    		widthSegments = Math.max( 3, Math.floor( widthSegments ) || 8 );
    		heightSegments = Math.max( 2, Math.floor( heightSegments ) || 6 );
    		phiStart = phiStart !== undefined ? phiStart : 0;
    		phiLength = phiLength !== undefined ? phiLength : Math.PI * 2;
    		thetaStart = thetaStart !== undefined ? thetaStart : 0;
    		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI;
    		const thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );
    		let index = 0;
    		const grid = [];
    		const vertex = new Vector3();
    		const normal = new Vector3();
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		for ( let iy = 0; iy <= heightSegments; iy ++ ) {
    			const verticesRow = [];
    			const v = iy / heightSegments;
    			let uOffset = 0;
    			if ( iy == 0 && thetaStart == 0 ) {
    				uOffset = 0.5 / widthSegments;
    			} else if ( iy == heightSegments && thetaEnd == Math.PI ) {
    				uOffset = - 0.5 / widthSegments;
    			}
    			for ( let ix = 0; ix <= widthSegments; ix ++ ) {
    				const u = ix / widthSegments;
    				vertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
    				vertex.y = radius * Math.cos( thetaStart + v * thetaLength );
    				vertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				normal.copy( vertex ).normalize();
    				normals.push( normal.x, normal.y, normal.z );
    				uvs.push( u + uOffset, 1 - v );
    				verticesRow.push( index ++ );
    			}
    			grid.push( verticesRow );
    		}
    		for ( let iy = 0; iy < heightSegments; iy ++ ) {
    			for ( let ix = 0; ix < widthSegments; ix ++ ) {
    				const a = grid[ iy ][ ix + 1 ];
    				const b = grid[ iy ][ ix ];
    				const c = grid[ iy + 1 ][ ix ];
    				const d = grid[ iy + 1 ][ ix + 1 ];
    				if ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );
    				if ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );
    			}
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    	}
    }
    class RingGeometry extends Geometry {
    	constructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {
    		super();
    		this.type = 'RingGeometry';
    		this.parameters = {
    			innerRadius: innerRadius,
    			outerRadius: outerRadius,
    			thetaSegments: thetaSegments,
    			phiSegments: phiSegments,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		this.fromBufferGeometry( new RingBufferGeometry( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) );
    		this.mergeVertices();
    	}
    }
    class RingBufferGeometry extends BufferGeometry {
    	constructor( innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength ) {
    		super();
    		this.type = 'RingBufferGeometry';
    		this.parameters = {
    			innerRadius: innerRadius,
    			outerRadius: outerRadius,
    			thetaSegments: thetaSegments,
    			phiSegments: phiSegments,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		innerRadius = innerRadius || 0.5;
    		outerRadius = outerRadius || 1;
    		thetaStart = thetaStart !== undefined ? thetaStart : 0;
    		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
    		thetaSegments = thetaSegments !== undefined ? Math.max( 3, thetaSegments ) : 8;
    		phiSegments = phiSegments !== undefined ? Math.max( 1, phiSegments ) : 1;
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		let radius = innerRadius;
    		const radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );
    		const vertex = new Vector3();
    		const uv = new Vector2();
    		for ( let j = 0; j <= phiSegments; j ++ ) {
    			for ( let i = 0; i <= thetaSegments; i ++ ) {
    				const segment = thetaStart + i / thetaSegments * thetaLength;
    				vertex.x = radius * Math.cos( segment );
    				vertex.y = radius * Math.sin( segment );
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				normals.push( 0, 0, 1 );
    				uv.x = ( vertex.x / outerRadius + 1 ) / 2;
    				uv.y = ( vertex.y / outerRadius + 1 ) / 2;
    				uvs.push( uv.x, uv.y );
    			}
    			radius += radiusStep;
    		}
    		for ( let j = 0; j < phiSegments; j ++ ) {
    			const thetaSegmentLevel = j * ( thetaSegments + 1 );
    			for ( let i = 0; i < thetaSegments; i ++ ) {
    				const segment = i + thetaSegmentLevel;
    				const a = segment;
    				const b = segment + thetaSegments + 1;
    				const c = segment + thetaSegments + 2;
    				const d = segment + 1;
    				indices.push( a, b, d );
    				indices.push( b, c, d );
    			}
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    	}
    }
    class LatheGeometry extends Geometry {
    	constructor( points, segments, phiStart, phiLength ) {
    		super();
    		this.type = 'LatheGeometry';
    		this.parameters = {
    			points: points,
    			segments: segments,
    			phiStart: phiStart,
    			phiLength: phiLength
    		};
    		this.fromBufferGeometry( new LatheBufferGeometry( points, segments, phiStart, phiLength ) );
    		this.mergeVertices();
    	}
    }
    class LatheBufferGeometry extends BufferGeometry {
    	constructor( points, segments, phiStart, phiLength ) {
    		super();
    		this.type = 'LatheBufferGeometry';
    		this.parameters = {
    			points: points,
    			segments: segments,
    			phiStart: phiStart,
    			phiLength: phiLength
    		};
    		segments = Math.floor( segments ) || 12;
    		phiStart = phiStart || 0;
    		phiLength = phiLength || Math.PI * 2;
    		phiLength = MathUtils.clamp( phiLength, 0, Math.PI * 2 );
    		const indices = [];
    		const vertices = [];
    		const uvs = [];
    		const inverseSegments = 1.0 / segments;
    		const vertex = new Vector3();
    		const uv = new Vector2();
    		for ( let i = 0; i <= segments; i ++ ) {
    			const phi = phiStart + i * inverseSegments * phiLength;
    			const sin = Math.sin( phi );
    			const cos = Math.cos( phi );
    			for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {
    				vertex.x = points[ j ].x * sin;
    				vertex.y = points[ j ].y;
    				vertex.z = points[ j ].x * cos;
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				uv.x = i / segments;
    				uv.y = j / ( points.length - 1 );
    				uvs.push( uv.x, uv.y );
    			}
    		}
    		for ( let i = 0; i < segments; i ++ ) {
    			for ( let j = 0; j < ( points.length - 1 ); j ++ ) {
    				const base = j + i * points.length;
    				const a = base;
    				const b = base + points.length;
    				const c = base + points.length + 1;
    				const d = base + 1;
    				indices.push( a, b, d );
    				indices.push( b, c, d );
    			}
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    		this.computeVertexNormals();
    		if ( phiLength === Math.PI * 2 ) {
    			const normals = this.attributes.normal.array;
    			const n1 = new Vector3();
    			const n2 = new Vector3();
    			const n = new Vector3();
    			const base = segments * points.length * 3;
    			for ( let i = 0, j = 0; i < points.length; i ++, j += 3 ) {
    				n1.x = normals[ j + 0 ];
    				n1.y = normals[ j + 1 ];
    				n1.z = normals[ j + 2 ];
    				n2.x = normals[ base + j + 0 ];
    				n2.y = normals[ base + j + 1 ];
    				n2.z = normals[ base + j + 2 ];
    				n.addVectors( n1, n2 ).normalize();
    				normals[ j + 0 ] = normals[ base + j + 0 ] = n.x;
    				normals[ j + 1 ] = normals[ base + j + 1 ] = n.y;
    				normals[ j + 2 ] = normals[ base + j + 2 ] = n.z;
    			}
    		}
    	}
    }
    class ShapeGeometry extends Geometry {
    	constructor( shapes, curveSegments ) {
    		super();
    		this.type = 'ShapeGeometry';
    		if ( typeof curveSegments === 'object' ) {
    			console.warn( 'THREE.ShapeGeometry: Options parameter has been removed.' );
    			curveSegments = curveSegments.curveSegments;
    		}
    		this.parameters = {
    			shapes: shapes,
    			curveSegments: curveSegments
    		};
    		this.fromBufferGeometry( new ShapeBufferGeometry( shapes, curveSegments ) );
    		this.mergeVertices();
    	}
    	toJSON() {
    		const data = Geometry.prototype.toJSON.call( this );
    		const shapes = this.parameters.shapes;
    		return toJSON$1( shapes, data );
    	}
    }
    class ShapeBufferGeometry extends BufferGeometry {
    	constructor( shapes, curveSegments ) {
    		super();
    		this.type = 'ShapeBufferGeometry';
    		this.parameters = {
    			shapes: shapes,
    			curveSegments: curveSegments
    		};
    		curveSegments = curveSegments || 12;
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		let groupStart = 0;
    		let groupCount = 0;
    		if ( Array.isArray( shapes ) === false ) {
    			addShape( shapes );
    		} else {
    			for ( let i = 0; i < shapes.length; i ++ ) {
    				addShape( shapes[ i ] );
    				this.addGroup( groupStart, groupCount, i );
    				groupStart += groupCount;
    				groupCount = 0;
    			}
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    		function addShape( shape ) {
    			const indexOffset = vertices.length / 3;
    			const points = shape.extractPoints( curveSegments );
    			let shapeVertices = points.shape;
    			const shapeHoles = points.holes;
    			if ( ShapeUtils.isClockWise( shapeVertices ) === false ) {
    				shapeVertices = shapeVertices.reverse();
    			}
    			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {
    				const shapeHole = shapeHoles[ i ];
    				if ( ShapeUtils.isClockWise( shapeHole ) === true ) {
    					shapeHoles[ i ] = shapeHole.reverse();
    				}
    			}
    			const faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );
    			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {
    				const shapeHole = shapeHoles[ i ];
    				shapeVertices = shapeVertices.concat( shapeHole );
    			}
    			for ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {
    				const vertex = shapeVertices[ i ];
    				vertices.push( vertex.x, vertex.y, 0 );
    				normals.push( 0, 0, 1 );
    				uvs.push( vertex.x, vertex.y );
    			}
    			for ( let i = 0, l = faces.length; i < l; i ++ ) {
    				const face = faces[ i ];
    				const a = face[ 0 ] + indexOffset;
    				const b = face[ 1 ] + indexOffset;
    				const c = face[ 2 ] + indexOffset;
    				indices.push( a, b, c );
    				groupCount += 3;
    			}
    		}
    	}
    	toJSON() {
    		const data = BufferGeometry.prototype.toJSON.call( this );
    		const shapes = this.parameters.shapes;
    		return toJSON$1( shapes, data );
    	}
    }
    function toJSON$1( shapes, data ) {
    	data.shapes = [];
    	if ( Array.isArray( shapes ) ) {
    		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
    			const shape = shapes[ i ];
    			data.shapes.push( shape.uuid );
    		}
    	} else {
    		data.shapes.push( shapes.uuid );
    	}
    	return data;
    }
    class EdgesGeometry extends BufferGeometry {
    	constructor( geometry, thresholdAngle ) {
    		super();
    		this.type = 'EdgesGeometry';
    		this.parameters = {
    			thresholdAngle: thresholdAngle
    		};
    		thresholdAngle = ( thresholdAngle !== undefined ) ? thresholdAngle : 1;
    		const vertices = [];
    		const thresholdDot = Math.cos( MathUtils.DEG2RAD * thresholdAngle );
    		const edge = [ 0, 0 ], edges = {};
    		let edge1, edge2, key;
    		const keys = [ 'a', 'b', 'c' ];
    		let geometry2;
    		if ( geometry.isBufferGeometry ) {
    			geometry2 = new Geometry();
    			geometry2.fromBufferGeometry( geometry );
    		} else {
    			geometry2 = geometry.clone();
    		}
    		geometry2.mergeVertices();
    		geometry2.computeFaceNormals();
    		const sourceVertices = geometry2.vertices;
    		const faces = geometry2.faces;
    		for ( let i = 0, l = faces.length; i < l; i ++ ) {
    			const face = faces[ i ];
    			for ( let j = 0; j < 3; j ++ ) {
    				edge1 = face[ keys[ j ] ];
    				edge2 = face[ keys[ ( j + 1 ) % 3 ] ];
    				edge[ 0 ] = Math.min( edge1, edge2 );
    				edge[ 1 ] = Math.max( edge1, edge2 );
    				key = edge[ 0 ] + ',' + edge[ 1 ];
    				if ( edges[ key ] === undefined ) {
    					edges[ key ] = { index1: edge[ 0 ], index2: edge[ 1 ], face1: i, face2: undefined };
    				} else {
    					edges[ key ].face2 = i;
    				}
    			}
    		}
    		for ( key in edges ) {
    			const e = edges[ key ];
    			if ( e.face2 === undefined || faces[ e.face1 ].normal.dot( faces[ e.face2 ].normal ) <= thresholdDot ) {
    				let vertex = sourceVertices[ e.index1 ];
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				vertex = sourceVertices[ e.index2 ];
    				vertices.push( vertex.x, vertex.y, vertex.z );
    			}
    		}
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    	}
    }
    class CylinderGeometry extends Geometry {
    	constructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
    		super();
    		this.type = 'CylinderGeometry';
    		this.parameters = {
    			radiusTop: radiusTop,
    			radiusBottom: radiusBottom,
    			height: height,
    			radialSegments: radialSegments,
    			heightSegments: heightSegments,
    			openEnded: openEnded,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		this.fromBufferGeometry( new CylinderBufferGeometry( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) );
    		this.mergeVertices();
    	}
    }
    class CylinderBufferGeometry extends BufferGeometry {
    	constructor( radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
    		super();
    		this.type = 'CylinderBufferGeometry';
    		this.parameters = {
    			radiusTop: radiusTop,
    			radiusBottom: radiusBottom,
    			height: height,
    			radialSegments: radialSegments,
    			heightSegments: heightSegments,
    			openEnded: openEnded,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		const scope = this;
    		radiusTop = radiusTop !== undefined ? radiusTop : 1;
    		radiusBottom = radiusBottom !== undefined ? radiusBottom : 1;
    		height = height || 1;
    		radialSegments = Math.floor( radialSegments ) || 8;
    		heightSegments = Math.floor( heightSegments ) || 1;
    		openEnded = openEnded !== undefined ? openEnded : false;
    		thetaStart = thetaStart !== undefined ? thetaStart : 0.0;
    		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		let index = 0;
    		const indexArray = [];
    		const halfHeight = height / 2;
    		let groupStart = 0;
    		generateTorso();
    		if ( openEnded === false ) {
    			if ( radiusTop > 0 ) generateCap( true );
    			if ( radiusBottom > 0 ) generateCap( false );
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    		function generateTorso() {
    			const normal = new Vector3();
    			const vertex = new Vector3();
    			let groupCount = 0;
    			const slope = ( radiusBottom - radiusTop ) / height;
    			for ( let y = 0; y <= heightSegments; y ++ ) {
    				const indexRow = [];
    				const v = y / heightSegments;
    				const radius = v * ( radiusBottom - radiusTop ) + radiusTop;
    				for ( let x = 0; x <= radialSegments; x ++ ) {
    					const u = x / radialSegments;
    					const theta = u * thetaLength + thetaStart;
    					const sinTheta = Math.sin( theta );
    					const cosTheta = Math.cos( theta );
    					vertex.x = radius * sinTheta;
    					vertex.y = - v * height + halfHeight;
    					vertex.z = radius * cosTheta;
    					vertices.push( vertex.x, vertex.y, vertex.z );
    					normal.set( sinTheta, slope, cosTheta ).normalize();
    					normals.push( normal.x, normal.y, normal.z );
    					uvs.push( u, 1 - v );
    					indexRow.push( index ++ );
    				}
    				indexArray.push( indexRow );
    			}
    			for ( let x = 0; x < radialSegments; x ++ ) {
    				for ( let y = 0; y < heightSegments; y ++ ) {
    					const a = indexArray[ y ][ x ];
    					const b = indexArray[ y + 1 ][ x ];
    					const c = indexArray[ y + 1 ][ x + 1 ];
    					const d = indexArray[ y ][ x + 1 ];
    					indices.push( a, b, d );
    					indices.push( b, c, d );
    					groupCount += 6;
    				}
    			}
    			scope.addGroup( groupStart, groupCount, 0 );
    			groupStart += groupCount;
    		}
    		function generateCap( top ) {
    			const centerIndexStart = index;
    			const uv = new Vector2();
    			const vertex = new Vector3();
    			let groupCount = 0;
    			const radius = ( top === true ) ? radiusTop : radiusBottom;
    			const sign = ( top === true ) ? 1 : - 1;
    			for ( let x = 1; x <= radialSegments; x ++ ) {
    				vertices.push( 0, halfHeight * sign, 0 );
    				normals.push( 0, sign, 0 );
    				uvs.push( 0.5, 0.5 );
    				index ++;
    			}
    			const centerIndexEnd = index;
    			for ( let x = 0; x <= radialSegments; x ++ ) {
    				const u = x / radialSegments;
    				const theta = u * thetaLength + thetaStart;
    				const cosTheta = Math.cos( theta );
    				const sinTheta = Math.sin( theta );
    				vertex.x = radius * sinTheta;
    				vertex.y = halfHeight * sign;
    				vertex.z = radius * cosTheta;
    				vertices.push( vertex.x, vertex.y, vertex.z );
    				normals.push( 0, sign, 0 );
    				uv.x = ( cosTheta * 0.5 ) + 0.5;
    				uv.y = ( sinTheta * 0.5 * sign ) + 0.5;
    				uvs.push( uv.x, uv.y );
    				index ++;
    			}
    			for ( let x = 0; x < radialSegments; x ++ ) {
    				const c = centerIndexStart + x;
    				const i = centerIndexEnd + x;
    				if ( top === true ) {
    					indices.push( i, i + 1, c );
    				} else {
    					indices.push( i + 1, i, c );
    				}
    				groupCount += 3;
    			}
    			scope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );
    			groupStart += groupCount;
    		}
    	}
    }
    class ConeGeometry extends CylinderGeometry {
    	constructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
    		super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );
    		this.type = 'ConeGeometry';
    		this.parameters = {
    			radius: radius,
    			height: height,
    			radialSegments: radialSegments,
    			heightSegments: heightSegments,
    			openEnded: openEnded,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    	}
    }
    class ConeBufferGeometry extends CylinderBufferGeometry {
    	constructor( radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength ) {
    		super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );
    		this.type = 'ConeBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			height: height,
    			radialSegments: radialSegments,
    			heightSegments: heightSegments,
    			openEnded: openEnded,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    	}
    }
    class CircleGeometry extends Geometry {
    	constructor( radius, segments, thetaStart, thetaLength ) {
    		super();
    		this.type = 'CircleGeometry';
    		this.parameters = {
    			radius: radius,
    			segments: segments,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		this.fromBufferGeometry( new CircleBufferGeometry( radius, segments, thetaStart, thetaLength ) );
    		this.mergeVertices();
    	}
    }
    class CircleBufferGeometry extends BufferGeometry {
    	constructor( radius, segments, thetaStart, thetaLength ) {
    		super();
    		this.type = 'CircleBufferGeometry';
    		this.parameters = {
    			radius: radius,
    			segments: segments,
    			thetaStart: thetaStart,
    			thetaLength: thetaLength
    		};
    		radius = radius || 1;
    		segments = segments !== undefined ? Math.max( 3, segments ) : 8;
    		thetaStart = thetaStart !== undefined ? thetaStart : 0;
    		thetaLength = thetaLength !== undefined ? thetaLength : Math.PI * 2;
    		const indices = [];
    		const vertices = [];
    		const normals = [];
    		const uvs = [];
    		const vertex = new Vector3();
    		const uv = new Vector2();
    		vertices.push( 0, 0, 0 );
    		normals.push( 0, 0, 1 );
    		uvs.push( 0.5, 0.5 );
    		for ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {
    			const segment = thetaStart + s / segments * thetaLength;
    			vertex.x = radius * Math.cos( segment );
    			vertex.y = radius * Math.sin( segment );
    			vertices.push( vertex.x, vertex.y, vertex.z );
    			normals.push( 0, 0, 1 );
    			uv.x = ( vertices[ i ] / radius + 1 ) / 2;
    			uv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;
    			uvs.push( uv.x, uv.y );
    		}
    		for ( let i = 1; i <= segments; i ++ ) {
    			indices.push( i, i + 1, 0 );
    		}
    		this.setIndex( indices );
    		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
    		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
    	}
    }
    var Geometries = Object.freeze({
    	__proto__: null,
    	WireframeGeometry: WireframeGeometry,
    	ParametricGeometry: ParametricGeometry,
    	ParametricBufferGeometry: ParametricBufferGeometry,
    	TetrahedronGeometry: TetrahedronGeometry,
    	TetrahedronBufferGeometry: TetrahedronBufferGeometry,
    	OctahedronGeometry: OctahedronGeometry,
    	OctahedronBufferGeometry: OctahedronBufferGeometry,
    	IcosahedronGeometry: IcosahedronGeometry,
    	IcosahedronBufferGeometry: IcosahedronBufferGeometry,
    	DodecahedronGeometry: DodecahedronGeometry,
    	DodecahedronBufferGeometry: DodecahedronBufferGeometry,
    	PolyhedronGeometry: PolyhedronGeometry,
    	PolyhedronBufferGeometry: PolyhedronBufferGeometry,
    	TubeGeometry: TubeGeometry,
    	TubeBufferGeometry: TubeBufferGeometry,
    	TorusKnotGeometry: TorusKnotGeometry,
    	TorusKnotBufferGeometry: TorusKnotBufferGeometry,
    	TorusGeometry: TorusGeometry,
    	TorusBufferGeometry: TorusBufferGeometry,
    	TextGeometry: TextGeometry,
    	TextBufferGeometry: TextBufferGeometry,
    	SphereGeometry: SphereGeometry,
    	SphereBufferGeometry: SphereBufferGeometry,
    	RingGeometry: RingGeometry,
    	RingBufferGeometry: RingBufferGeometry,
    	PlaneGeometry: PlaneGeometry,
    	PlaneBufferGeometry: PlaneBufferGeometry,
    	LatheGeometry: LatheGeometry,
    	LatheBufferGeometry: LatheBufferGeometry,
    	ShapeGeometry: ShapeGeometry,
    	ShapeBufferGeometry: ShapeBufferGeometry,
    	ExtrudeGeometry: ExtrudeGeometry,
    	ExtrudeBufferGeometry: ExtrudeBufferGeometry,
    	EdgesGeometry: EdgesGeometry,
    	ConeGeometry: ConeGeometry,
    	ConeBufferGeometry: ConeBufferGeometry,
    	CylinderGeometry: CylinderGeometry,
    	CylinderBufferGeometry: CylinderBufferGeometry,
    	CircleGeometry: CircleGeometry,
    	CircleBufferGeometry: CircleBufferGeometry,
    	BoxGeometry: BoxGeometry,
    	BoxBufferGeometry: BoxBufferGeometry
    });
    function ShadowMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'ShadowMaterial';
    	this.color = new Color( 0x000000 );
    	this.transparent = true;
    	this.setValues( parameters );
    }
    ShadowMaterial.prototype = Object.create( Material.prototype );
    ShadowMaterial.prototype.constructor = ShadowMaterial;
    ShadowMaterial.prototype.isShadowMaterial = true;
    ShadowMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	return this;
    };
    function RawShaderMaterial( parameters ) {
    	ShaderMaterial.call( this, parameters );
    	this.type = 'RawShaderMaterial';
    }
    RawShaderMaterial.prototype = Object.create( ShaderMaterial.prototype );
    RawShaderMaterial.prototype.constructor = RawShaderMaterial;
    RawShaderMaterial.prototype.isRawShaderMaterial = true;
    function MeshStandardMaterial( parameters ) {
    	Material.call( this );
    	this.defines = { 'STANDARD': '' };
    	this.type = 'MeshStandardMaterial';
    	this.color = new Color( 0xffffff );
    	this.roughness = 1.0;
    	this.metalness = 0.0;
    	this.map = null;
    	this.lightMap = null;
    	this.lightMapIntensity = 1.0;
    	this.aoMap = null;
    	this.aoMapIntensity = 1.0;
    	this.emissive = new Color( 0x000000 );
    	this.emissiveIntensity = 1.0;
    	this.emissiveMap = null;
    	this.bumpMap = null;
    	this.bumpScale = 1;
    	this.normalMap = null;
    	this.normalMapType = TangentSpaceNormalMap;
    	this.normalScale = new Vector2( 1, 1 );
    	this.displacementMap = null;
    	this.displacementScale = 1;
    	this.displacementBias = 0;
    	this.roughnessMap = null;
    	this.metalnessMap = null;
    	this.alphaMap = null;
    	this.envMap = null;
    	this.envMapIntensity = 1.0;
    	this.refractionRatio = 0.98;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.wireframeLinecap = 'round';
    	this.wireframeLinejoin = 'round';
    	this.skinning = false;
    	this.morphTargets = false;
    	this.morphNormals = false;
    	this.vertexTangents = false;
    	this.setValues( parameters );
    }
    MeshStandardMaterial.prototype = Object.create( Material.prototype );
    MeshStandardMaterial.prototype.constructor = MeshStandardMaterial;
    MeshStandardMaterial.prototype.isMeshStandardMaterial = true;
    MeshStandardMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.defines = { 'STANDARD': '' };
    	this.color.copy( source.color );
    	this.roughness = source.roughness;
    	this.metalness = source.metalness;
    	this.map = source.map;
    	this.lightMap = source.lightMap;
    	this.lightMapIntensity = source.lightMapIntensity;
    	this.aoMap = source.aoMap;
    	this.aoMapIntensity = source.aoMapIntensity;
    	this.emissive.copy( source.emissive );
    	this.emissiveMap = source.emissiveMap;
    	this.emissiveIntensity = source.emissiveIntensity;
    	this.bumpMap = source.bumpMap;
    	this.bumpScale = source.bumpScale;
    	this.normalMap = source.normalMap;
    	this.normalMapType = source.normalMapType;
    	this.normalScale.copy( source.normalScale );
    	this.displacementMap = source.displacementMap;
    	this.displacementScale = source.displacementScale;
    	this.displacementBias = source.displacementBias;
    	this.roughnessMap = source.roughnessMap;
    	this.metalnessMap = source.metalnessMap;
    	this.alphaMap = source.alphaMap;
    	this.envMap = source.envMap;
    	this.envMapIntensity = source.envMapIntensity;
    	this.refractionRatio = source.refractionRatio;
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	this.wireframeLinecap = source.wireframeLinecap;
    	this.wireframeLinejoin = source.wireframeLinejoin;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.morphNormals = source.morphNormals;
    	this.vertexTangents = source.vertexTangents;
    	return this;
    };
    function MeshPhysicalMaterial( parameters ) {
    	MeshStandardMaterial.call( this );
    	this.defines = {
    		'STANDARD': '',
    		'PHYSICAL': ''
    	};
    	this.type = 'MeshPhysicalMaterial';
    	this.clearcoat = 0.0;
    	this.clearcoatMap = null;
    	this.clearcoatRoughness = 0.0;
    	this.clearcoatRoughnessMap = null;
    	this.clearcoatNormalScale = new Vector2( 1, 1 );
    	this.clearcoatNormalMap = null;
    	this.reflectivity = 0.5;
    	this.sheen = null;
    	this.transmission = 0.0;
    	this.transmissionMap = null;
    	this.setValues( parameters );
    }
    MeshPhysicalMaterial.prototype = Object.create( MeshStandardMaterial.prototype );
    MeshPhysicalMaterial.prototype.constructor = MeshPhysicalMaterial;
    MeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;
    MeshPhysicalMaterial.prototype.copy = function ( source ) {
    	MeshStandardMaterial.prototype.copy.call( this, source );
    	this.defines = {
    		'STANDARD': '',
    		'PHYSICAL': ''
    	};
    	this.clearcoat = source.clearcoat;
    	this.clearcoatMap = source.clearcoatMap;
    	this.clearcoatRoughness = source.clearcoatRoughness;
    	this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
    	this.clearcoatNormalMap = source.clearcoatNormalMap;
    	this.clearcoatNormalScale.copy( source.clearcoatNormalScale );
    	this.reflectivity = source.reflectivity;
    	if ( source.sheen ) {
    		this.sheen = ( this.sheen || new Color() ).copy( source.sheen );
    	} else {
    		this.sheen = null;
    	}
    	this.transmission = source.transmission;
    	this.transmissionMap = source.transmissionMap;
    	return this;
    };
    function MeshPhongMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'MeshPhongMaterial';
    	this.color = new Color( 0xffffff );
    	this.specular = new Color( 0x111111 );
    	this.shininess = 30;
    	this.map = null;
    	this.lightMap = null;
    	this.lightMapIntensity = 1.0;
    	this.aoMap = null;
    	this.aoMapIntensity = 1.0;
    	this.emissive = new Color( 0x000000 );
    	this.emissiveIntensity = 1.0;
    	this.emissiveMap = null;
    	this.bumpMap = null;
    	this.bumpScale = 1;
    	this.normalMap = null;
    	this.normalMapType = TangentSpaceNormalMap;
    	this.normalScale = new Vector2( 1, 1 );
    	this.displacementMap = null;
    	this.displacementScale = 1;
    	this.displacementBias = 0;
    	this.specularMap = null;
    	this.alphaMap = null;
    	this.envMap = null;
    	this.combine = MultiplyOperation;
    	this.reflectivity = 1;
    	this.refractionRatio = 0.98;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.wireframeLinecap = 'round';
    	this.wireframeLinejoin = 'round';
    	this.skinning = false;
    	this.morphTargets = false;
    	this.morphNormals = false;
    	this.setValues( parameters );
    }
    MeshPhongMaterial.prototype = Object.create( Material.prototype );
    MeshPhongMaterial.prototype.constructor = MeshPhongMaterial;
    MeshPhongMaterial.prototype.isMeshPhongMaterial = true;
    MeshPhongMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	this.specular.copy( source.specular );
    	this.shininess = source.shininess;
    	this.map = source.map;
    	this.lightMap = source.lightMap;
    	this.lightMapIntensity = source.lightMapIntensity;
    	this.aoMap = source.aoMap;
    	this.aoMapIntensity = source.aoMapIntensity;
    	this.emissive.copy( source.emissive );
    	this.emissiveMap = source.emissiveMap;
    	this.emissiveIntensity = source.emissiveIntensity;
    	this.bumpMap = source.bumpMap;
    	this.bumpScale = source.bumpScale;
    	this.normalMap = source.normalMap;
    	this.normalMapType = source.normalMapType;
    	this.normalScale.copy( source.normalScale );
    	this.displacementMap = source.displacementMap;
    	this.displacementScale = source.displacementScale;
    	this.displacementBias = source.displacementBias;
    	this.specularMap = source.specularMap;
    	this.alphaMap = source.alphaMap;
    	this.envMap = source.envMap;
    	this.combine = source.combine;
    	this.reflectivity = source.reflectivity;
    	this.refractionRatio = source.refractionRatio;
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	this.wireframeLinecap = source.wireframeLinecap;
    	this.wireframeLinejoin = source.wireframeLinejoin;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.morphNormals = source.morphNormals;
    	return this;
    };
    function MeshToonMaterial( parameters ) {
    	Material.call( this );
    	this.defines = { 'TOON': '' };
    	this.type = 'MeshToonMaterial';
    	this.color = new Color( 0xffffff );
    	this.map = null;
    	this.gradientMap = null;
    	this.lightMap = null;
    	this.lightMapIntensity = 1.0;
    	this.aoMap = null;
    	this.aoMapIntensity = 1.0;
    	this.emissive = new Color( 0x000000 );
    	this.emissiveIntensity = 1.0;
    	this.emissiveMap = null;
    	this.bumpMap = null;
    	this.bumpScale = 1;
    	this.normalMap = null;
    	this.normalMapType = TangentSpaceNormalMap;
    	this.normalScale = new Vector2( 1, 1 );
    	this.displacementMap = null;
    	this.displacementScale = 1;
    	this.displacementBias = 0;
    	this.alphaMap = null;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.wireframeLinecap = 'round';
    	this.wireframeLinejoin = 'round';
    	this.skinning = false;
    	this.morphTargets = false;
    	this.morphNormals = false;
    	this.setValues( parameters );
    }
    MeshToonMaterial.prototype = Object.create( Material.prototype );
    MeshToonMaterial.prototype.constructor = MeshToonMaterial;
    MeshToonMaterial.prototype.isMeshToonMaterial = true;
    MeshToonMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	this.map = source.map;
    	this.gradientMap = source.gradientMap;
    	this.lightMap = source.lightMap;
    	this.lightMapIntensity = source.lightMapIntensity;
    	this.aoMap = source.aoMap;
    	this.aoMapIntensity = source.aoMapIntensity;
    	this.emissive.copy( source.emissive );
    	this.emissiveMap = source.emissiveMap;
    	this.emissiveIntensity = source.emissiveIntensity;
    	this.bumpMap = source.bumpMap;
    	this.bumpScale = source.bumpScale;
    	this.normalMap = source.normalMap;
    	this.normalMapType = source.normalMapType;
    	this.normalScale.copy( source.normalScale );
    	this.displacementMap = source.displacementMap;
    	this.displacementScale = source.displacementScale;
    	this.displacementBias = source.displacementBias;
    	this.alphaMap = source.alphaMap;
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	this.wireframeLinecap = source.wireframeLinecap;
    	this.wireframeLinejoin = source.wireframeLinejoin;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.morphNormals = source.morphNormals;
    	return this;
    };
    function MeshNormalMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'MeshNormalMaterial';
    	this.bumpMap = null;
    	this.bumpScale = 1;
    	this.normalMap = null;
    	this.normalMapType = TangentSpaceNormalMap;
    	this.normalScale = new Vector2( 1, 1 );
    	this.displacementMap = null;
    	this.displacementScale = 1;
    	this.displacementBias = 0;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.fog = false;
    	this.skinning = false;
    	this.morphTargets = false;
    	this.morphNormals = false;
    	this.setValues( parameters );
    }
    MeshNormalMaterial.prototype = Object.create( Material.prototype );
    MeshNormalMaterial.prototype.constructor = MeshNormalMaterial;
    MeshNormalMaterial.prototype.isMeshNormalMaterial = true;
    MeshNormalMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.bumpMap = source.bumpMap;
    	this.bumpScale = source.bumpScale;
    	this.normalMap = source.normalMap;
    	this.normalMapType = source.normalMapType;
    	this.normalScale.copy( source.normalScale );
    	this.displacementMap = source.displacementMap;
    	this.displacementScale = source.displacementScale;
    	this.displacementBias = source.displacementBias;
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.morphNormals = source.morphNormals;
    	return this;
    };
    function MeshLambertMaterial( parameters ) {
    	Material.call( this );
    	this.type = 'MeshLambertMaterial';
    	this.color = new Color( 0xffffff );
    	this.map = null;
    	this.lightMap = null;
    	this.lightMapIntensity = 1.0;
    	this.aoMap = null;
    	this.aoMapIntensity = 1.0;
    	this.emissive = new Color( 0x000000 );
    	this.emissiveIntensity = 1.0;
    	this.emissiveMap = null;
    	this.specularMap = null;
    	this.alphaMap = null;
    	this.envMap = null;
    	this.combine = MultiplyOperation;
    	this.reflectivity = 1;
    	this.refractionRatio = 0.98;
    	this.wireframe = false;
    	this.wireframeLinewidth = 1;
    	this.wireframeLinecap = 'round';
    	this.wireframeLinejoin = 'round';
    	this.skinning = false;
    	this.morphTargets = false;
    	this.morphNormals = false;
    	this.setValues( parameters );
    }
    MeshLambertMaterial.prototype = Object.create( Material.prototype );
    MeshLambertMaterial.prototype.constructor = MeshLambertMaterial;
    MeshLambertMaterial.prototype.isMeshLambertMaterial = true;
    MeshLambertMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.color.copy( source.color );
    	this.map = source.map;
    	this.lightMap = source.lightMap;
    	this.lightMapIntensity = source.lightMapIntensity;
    	this.aoMap = source.aoMap;
    	this.aoMapIntensity = source.aoMapIntensity;
    	this.emissive.copy( source.emissive );
    	this.emissiveMap = source.emissiveMap;
    	this.emissiveIntensity = source.emissiveIntensity;
    	this.specularMap = source.specularMap;
    	this.alphaMap = source.alphaMap;
    	this.envMap = source.envMap;
    	this.combine = source.combine;
    	this.reflectivity = source.reflectivity;
    	this.refractionRatio = source.refractionRatio;
    	this.wireframe = source.wireframe;
    	this.wireframeLinewidth = source.wireframeLinewidth;
    	this.wireframeLinecap = source.wireframeLinecap;
    	this.wireframeLinejoin = source.wireframeLinejoin;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.morphNormals = source.morphNormals;
    	return this;
    };
    function MeshMatcapMaterial( parameters ) {
    	Material.call( this );
    	this.defines = { 'MATCAP': '' };
    	this.type = 'MeshMatcapMaterial';
    	this.color = new Color( 0xffffff );
    	this.matcap = null;
    	this.map = null;
    	this.bumpMap = null;
    	this.bumpScale = 1;
    	this.normalMap = null;
    	this.normalMapType = TangentSpaceNormalMap;
    	this.normalScale = new Vector2( 1, 1 );
    	this.displacementMap = null;
    	this.displacementScale = 1;
    	this.displacementBias = 0;
    	this.alphaMap = null;
    	this.skinning = false;
    	this.morphTargets = false;
    	this.morphNormals = false;
    	this.setValues( parameters );
    }
    MeshMatcapMaterial.prototype = Object.create( Material.prototype );
    MeshMatcapMaterial.prototype.constructor = MeshMatcapMaterial;
    MeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;
    MeshMatcapMaterial.prototype.copy = function ( source ) {
    	Material.prototype.copy.call( this, source );
    	this.defines = { 'MATCAP': '' };
    	this.color.copy( source.color );
    	this.matcap = source.matcap;
    	this.map = source.map;
    	this.bumpMap = source.bumpMap;
    	this.bumpScale = source.bumpScale;
    	this.normalMap = source.normalMap;
    	this.normalMapType = source.normalMapType;
    	this.normalScale.copy( source.normalScale );
    	this.displacementMap = source.displacementMap;
    	this.displacementScale = source.displacementScale;
    	this.displacementBias = source.displacementBias;
    	this.alphaMap = source.alphaMap;
    	this.skinning = source.skinning;
    	this.morphTargets = source.morphTargets;
    	this.morphNormals = source.morphNormals;
    	return this;
    };
    function LineDashedMaterial( parameters ) {
    	LineBasicMaterial.call( this );
    	this.type = 'LineDashedMaterial';
    	this.scale = 1;
    	this.dashSize = 3;
    	this.gapSize = 1;
    	this.setValues( parameters );
    }
    LineDashedMaterial.prototype = Object.create( LineBasicMaterial.prototype );
    LineDashedMaterial.prototype.constructor = LineDashedMaterial;
    LineDashedMaterial.prototype.isLineDashedMaterial = true;
    LineDashedMaterial.prototype.copy = function ( source ) {
    	LineBasicMaterial.prototype.copy.call( this, source );
    	this.scale = source.scale;
    	this.dashSize = source.dashSize;
    	this.gapSize = source.gapSize;
    	return this;
    };
    var Materials = Object.freeze({
    	__proto__: null,
    	ShadowMaterial: ShadowMaterial,
    	SpriteMaterial: SpriteMaterial,
    	RawShaderMaterial: RawShaderMaterial,
    	ShaderMaterial: ShaderMaterial,
    	PointsMaterial: PointsMaterial,
    	MeshPhysicalMaterial: MeshPhysicalMaterial,
    	MeshStandardMaterial: MeshStandardMaterial,
    	MeshPhongMaterial: MeshPhongMaterial,
    	MeshToonMaterial: MeshToonMaterial,
    	MeshNormalMaterial: MeshNormalMaterial,
    	MeshLambertMaterial: MeshLambertMaterial,
    	MeshDepthMaterial: MeshDepthMaterial,
    	MeshDistanceMaterial: MeshDistanceMaterial,
    	MeshBasicMaterial: MeshBasicMaterial,
    	MeshMatcapMaterial: MeshMatcapMaterial,
    	LineDashedMaterial: LineDashedMaterial,
    	LineBasicMaterial: LineBasicMaterial,
    	Material: Material
    });
    const AnimationUtils = {
    	arraySlice: function ( array, from, to ) {
    		if ( AnimationUtils.isTypedArray( array ) ) {
    			return new array.constructor( array.subarray( from, to !== undefined ? to : array.length ) );
    		}
    		return array.slice( from, to );
    	},
    	convertArray: function ( array, type, forceClone ) {
    		if ( ! array ||
    			! forceClone && array.constructor === type ) return array;
    		if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {
    			return new type( array );
    		}
    		return Array.prototype.slice.call( array );
    	},
    	isTypedArray: function ( object ) {
    		return ArrayBuffer.isView( object ) &&
    			! ( object instanceof DataView );
    	},
    	getKeyframeOrder: function ( times ) {
    		function compareTime( i, j ) {
    			return times[ i ] - times[ j ];
    		}
    		const n = times.length;
    		const result = new Array( n );
    		for ( let i = 0; i !== n; ++ i ) result[ i ] = i;
    		result.sort( compareTime );
    		return result;
    	},
    	sortedArray: function ( values, stride, order ) {
    		const nValues = values.length;
    		const result = new values.constructor( nValues );
    		for ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {
    			const srcOffset = order[ i ] * stride;
    			for ( let j = 0; j !== stride; ++ j ) {
    				result[ dstOffset ++ ] = values[ srcOffset + j ];
    			}
    		}
    		return result;
    	},
    	flattenJSON: function ( jsonKeys, times, values, valuePropertyName ) {
    		let i = 1, key = jsonKeys[ 0 ];
    		while ( key !== undefined && key[ valuePropertyName ] === undefined ) {
    			key = jsonKeys[ i ++ ];
    		}
    		if ( key === undefined ) return;
    		let value = key[ valuePropertyName ];
    		if ( value === undefined ) return;
    		if ( Array.isArray( value ) ) {
    			do {
    				value = key[ valuePropertyName ];
    				if ( value !== undefined ) {
    					times.push( key.time );
    					values.push.apply( values, value );
    				}
    				key = jsonKeys[ i ++ ];
    			} while ( key !== undefined );
    		} else if ( value.toArray !== undefined ) {
    			do {
    				value = key[ valuePropertyName ];
    				if ( value !== undefined ) {
    					times.push( key.time );
    					value.toArray( values, values.length );
    				}
    				key = jsonKeys[ i ++ ];
    			} while ( key !== undefined );
    		} else {
    			do {
    				value = key[ valuePropertyName ];
    				if ( value !== undefined ) {
    					times.push( key.time );
    					values.push( value );
    				}
    				key = jsonKeys[ i ++ ];
    			} while ( key !== undefined );
    		}
    	},
    	subclip: function ( sourceClip, name, startFrame, endFrame, fps ) {
    		fps = fps || 30;
    		const clip = sourceClip.clone();
    		clip.name = name;
    		const tracks = [];
    		for ( let i = 0; i < clip.tracks.length; ++ i ) {
    			const track = clip.tracks[ i ];
    			const valueSize = track.getValueSize();
    			const times = [];
    			const values = [];
    			for ( let j = 0; j < track.times.length; ++ j ) {
    				const frame = track.times[ j ] * fps;
    				if ( frame < startFrame || frame >= endFrame ) continue;
    				times.push( track.times[ j ] );
    				for ( let k = 0; k < valueSize; ++ k ) {
    					values.push( track.values[ j * valueSize + k ] );
    				}
    			}
    			if ( times.length === 0 ) continue;
    			track.times = AnimationUtils.convertArray( times, track.times.constructor );
    			track.values = AnimationUtils.convertArray( values, track.values.constructor );
    			tracks.push( track );
    		}
    		clip.tracks = tracks;
    		let minStartTime = Infinity;
    		for ( let i = 0; i < clip.tracks.length; ++ i ) {
    			if ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {
    				minStartTime = clip.tracks[ i ].times[ 0 ];
    			}
    		}
    		for ( let i = 0; i < clip.tracks.length; ++ i ) {
    			clip.tracks[ i ].shift( - 1 * minStartTime );
    		}
    		clip.resetDuration();
    		return clip;
    	},
    	makeClipAdditive: function ( targetClip, referenceFrame, referenceClip, fps ) {
    		if ( referenceFrame === undefined ) referenceFrame = 0;
    		if ( referenceClip === undefined ) referenceClip = targetClip;
    		if ( fps === undefined || fps <= 0 ) fps = 30;
    		const numTracks = targetClip.tracks.length;
    		const referenceTime = referenceFrame / fps;
    		for ( let i = 0; i < numTracks; ++ i ) {
    			const referenceTrack = referenceClip.tracks[ i ];
    			const referenceTrackType = referenceTrack.ValueTypeName;
    			if ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;
    			const targetTrack = targetClip.tracks.find( function ( track ) {
    				return track.name === referenceTrack.name
    					&& track.ValueTypeName === referenceTrackType;
    			} );
    			if ( targetTrack === undefined ) continue;
    			let referenceOffset = 0;
    			const referenceValueSize = referenceTrack.getValueSize();
    			if ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {
    				referenceOffset = referenceValueSize / 3;
    			}
    			let targetOffset = 0;
    			const targetValueSize = targetTrack.getValueSize();
    			if ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {
    				targetOffset = targetValueSize / 3;
    			}
    			const lastIndex = referenceTrack.times.length - 1;
    			let referenceValue;
    			if ( referenceTime <= referenceTrack.times[ 0 ] ) {
    				const startIndex = referenceOffset;
    				const endIndex = referenceValueSize - referenceOffset;
    				referenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );
    			} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {
    				const startIndex = lastIndex * referenceValueSize + referenceOffset;
    				const endIndex = startIndex + referenceValueSize - referenceOffset;
    				referenceValue = AnimationUtils.arraySlice( referenceTrack.values, startIndex, endIndex );
    			} else {
    				const interpolant = referenceTrack.createInterpolant();
    				const startIndex = referenceOffset;
    				const endIndex = referenceValueSize - referenceOffset;
    				interpolant.evaluate( referenceTime );
    				referenceValue = AnimationUtils.arraySlice( interpolant.resultBuffer, startIndex, endIndex );
    			}
    			if ( referenceTrackType === 'quaternion' ) {
    				const referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();
    				referenceQuat.toArray( referenceValue );
    			}
    			const numTimes = targetTrack.times.length;
    			for ( let j = 0; j < numTimes; ++ j ) {
    				const valueStart = j * targetValueSize + targetOffset;
    				if ( referenceTrackType === 'quaternion' ) {
    					Quaternion.multiplyQuaternionsFlat(
    						targetTrack.values,
    						valueStart,
    						referenceValue,
    						0,
    						targetTrack.values,
    						valueStart
    					);
    				} else {
    					const valueEnd = targetValueSize - targetOffset * 2;
    					for ( let k = 0; k < valueEnd; ++ k ) {
    						targetTrack.values[ valueStart + k ] -= referenceValue[ k ];
    					}
    				}
    			}
    		}
    		targetClip.blendMode = AdditiveAnimationBlendMode;
    		return targetClip;
    	}
    };
    function Interpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
    	this.parameterPositions = parameterPositions;
    	this._cachedIndex = 0;
    	this.resultBuffer = resultBuffer !== undefined ?
    		resultBuffer : new sampleValues.constructor( sampleSize );
    	this.sampleValues = sampleValues;
    	this.valueSize = sampleSize;
    }
    Object.assign( Interpolant.prototype, {
    	evaluate: function ( t ) {
    		const pp = this.parameterPositions;
    		let i1 = this._cachedIndex,
    			t1 = pp[ i1 ],
    			t0 = pp[ i1 - 1 ];
    		validate_interval: {
    			seek: {
    				let right;
    				linear_scan: {
    					forward_scan: if ( ! ( t < t1 ) ) {
    						for ( let giveUpAt = i1 + 2; ; ) {
    							if ( t1 === undefined ) {
    								if ( t < t0 ) break forward_scan;
    								i1 = pp.length;
    								this._cachedIndex = i1;
    								return this.afterEnd_( i1 - 1, t, t0 );
    							}
    							if ( i1 === giveUpAt ) break;
    							t0 = t1;
    							t1 = pp[ ++ i1 ];
    							if ( t < t1 ) {
    								break seek;
    							}
    						}
    						right = pp.length;
    						break linear_scan;
    					}
    					if ( ! ( t >= t0 ) ) {
    						const t1global = pp[ 1 ];
    						if ( t < t1global ) {
    							i1 = 2;
    							t0 = t1global;
    						}
    						for ( let giveUpAt = i1 - 2; ; ) {
    							if ( t0 === undefined ) {
    								this._cachedIndex = 0;
    								return this.beforeStart_( 0, t, t1 );
    							}
    							if ( i1 === giveUpAt ) break;
    							t1 = t0;
    							t0 = pp[ -- i1 - 1 ];
    							if ( t >= t0 ) {
    								break seek;
    							}
    						}
    						right = i1;
    						i1 = 0;
    						break linear_scan;
    					}
    					break validate_interval;
    				}
    				while ( i1 < right ) {
    					const mid = ( i1 + right ) >>> 1;
    					if ( t < pp[ mid ] ) {
    						right = mid;
    					} else {
    						i1 = mid + 1;
    					}
    				}
    				t1 = pp[ i1 ];
    				t0 = pp[ i1 - 1 ];
    				if ( t0 === undefined ) {
    					this._cachedIndex = 0;
    					return this.beforeStart_( 0, t, t1 );
    				}
    				if ( t1 === undefined ) {
    					i1 = pp.length;
    					this._cachedIndex = i1;
    					return this.afterEnd_( i1 - 1, t0, t );
    				}
    			}
    			this._cachedIndex = i1;
    			this.intervalChanged_( i1, t0, t1 );
    		}
    		return this.interpolate_( i1, t0, t, t1 );
    	},
    	settings: null,
    	DefaultSettings_: {},
    	getSettings_: function () {
    		return this.settings || this.DefaultSettings_;
    	},
    	copySampleValue_: function ( index ) {
    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,
    			offset = index * stride;
    		for ( let i = 0; i !== stride; ++ i ) {
    			result[ i ] = values[ offset + i ];
    		}
    		return result;
    	},
    	interpolate_: function (  ) {
    		throw new Error( 'call to abstract method' );
    	},
    	intervalChanged_: function (  ) {
    	}
    } );
    Object.assign( Interpolant.prototype, {
    	beforeStart_: Interpolant.prototype.copySampleValue_,
    	afterEnd_: Interpolant.prototype.copySampleValue_,
    } );
    function CubicInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
    	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
    	this._weightPrev = - 0;
    	this._offsetPrev = - 0;
    	this._weightNext = - 0;
    	this._offsetNext = - 0;
    }
    CubicInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
    	constructor: CubicInterpolant,
    	DefaultSettings_: {
    		endingStart: ZeroCurvatureEnding,
    		endingEnd: ZeroCurvatureEnding
    	},
    	intervalChanged_: function ( i1, t0, t1 ) {
    		const pp = this.parameterPositions;
    		let iPrev = i1 - 2,
    			iNext = i1 + 1,
    			tPrev = pp[ iPrev ],
    			tNext = pp[ iNext ];
    		if ( tPrev === undefined ) {
    			switch ( this.getSettings_().endingStart ) {
    				case ZeroSlopeEnding:
    					iPrev = i1;
    					tPrev = 2 * t0 - t1;
    					break;
    				case WrapAroundEnding:
    					iPrev = pp.length - 2;
    					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];
    					break;
    				default:
    					iPrev = i1;
    					tPrev = t1;
    			}
    		}
    		if ( tNext === undefined ) {
    			switch ( this.getSettings_().endingEnd ) {
    				case ZeroSlopeEnding:
    					iNext = i1;
    					tNext = 2 * t1 - t0;
    					break;
    				case WrapAroundEnding:
    					iNext = 1;
    					tNext = t1 + pp[ 1 ] - pp[ 0 ];
    					break;
    				default:
    					iNext = i1 - 1;
    					tNext = t0;
    			}
    		}
    		const halfDt = ( t1 - t0 ) * 0.5,
    			stride = this.valueSize;
    		this._weightPrev = halfDt / ( t0 - tPrev );
    		this._weightNext = halfDt / ( tNext - t1 );
    		this._offsetPrev = iPrev * stride;
    		this._offsetNext = iNext * stride;
    	},
    	interpolate_: function ( i1, t0, t, t1 ) {
    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,
    			o1 = i1 * stride,		o0 = o1 - stride,
    			oP = this._offsetPrev, 	oN = this._offsetNext,
    			wP = this._weightPrev,	wN = this._weightNext,
    			p = ( t - t0 ) / ( t1 - t0 ),
    			pp = p * p,
    			ppp = pp * p;
    		const sP = - wP * ppp + 2 * wP * pp - wP * p;
    		const s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;
    		const s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;
    		const sN = wN * ppp - wN * pp;
    		for ( let i = 0; i !== stride; ++ i ) {
    			result[ i ] =
    					sP * values[ oP + i ] +
    					s0 * values[ o0 + i ] +
    					s1 * values[ o1 + i ] +
    					sN * values[ oN + i ];
    		}
    		return result;
    	}
    } );
    function LinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
    	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
    }
    LinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
    	constructor: LinearInterpolant,
    	interpolate_: function ( i1, t0, t, t1 ) {
    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,
    			offset1 = i1 * stride,
    			offset0 = offset1 - stride,
    			weight1 = ( t - t0 ) / ( t1 - t0 ),
    			weight0 = 1 - weight1;
    		for ( let i = 0; i !== stride; ++ i ) {
    			result[ i ] =
    					values[ offset0 + i ] * weight0 +
    					values[ offset1 + i ] * weight1;
    		}
    		return result;
    	}
    } );
    function DiscreteInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
    	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
    }
    DiscreteInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
    	constructor: DiscreteInterpolant,
    	interpolate_: function ( i1  ) {
    		return this.copySampleValue_( i1 - 1 );
    	}
    } );
    function KeyframeTrack( name, times, values, interpolation ) {
    	if ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );
    	if ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );
    	this.name = name;
    	this.times = AnimationUtils.convertArray( times, this.TimeBufferType );
    	this.values = AnimationUtils.convertArray( values, this.ValueBufferType );
    	this.setInterpolation( interpolation || this.DefaultInterpolation );
    }
    Object.assign( KeyframeTrack, {
    	toJSON: function ( track ) {
    		const trackType = track.constructor;
    		let json;
    		if ( trackType.toJSON !== undefined ) {
    			json = trackType.toJSON( track );
    		} else {
    			json = {
    				'name': track.name,
    				'times': AnimationUtils.convertArray( track.times, Array ),
    				'values': AnimationUtils.convertArray( track.values, Array )
    			};
    			const interpolation = track.getInterpolation();
    			if ( interpolation !== track.DefaultInterpolation ) {
    				json.interpolation = interpolation;
    			}
    		}
    		json.type = track.ValueTypeName;
    		return json;
    	}
    } );
    Object.assign( KeyframeTrack.prototype, {
    	constructor: KeyframeTrack,
    	TimeBufferType: Float32Array,
    	ValueBufferType: Float32Array,
    	DefaultInterpolation: InterpolateLinear,
    	InterpolantFactoryMethodDiscrete: function ( result ) {
    		return new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );
    	},
    	InterpolantFactoryMethodLinear: function ( result ) {
    		return new LinearInterpolant( this.times, this.values, this.getValueSize(), result );
    	},
    	InterpolantFactoryMethodSmooth: function ( result ) {
    		return new CubicInterpolant( this.times, this.values, this.getValueSize(), result );
    	},
    	setInterpolation: function ( interpolation ) {
    		let factoryMethod;
    		switch ( interpolation ) {
    			case InterpolateDiscrete:
    				factoryMethod = this.InterpolantFactoryMethodDiscrete;
    				break;
    			case InterpolateLinear:
    				factoryMethod = this.InterpolantFactoryMethodLinear;
    				break;
    			case InterpolateSmooth:
    				factoryMethod = this.InterpolantFactoryMethodSmooth;
    				break;
    		}
    		if ( factoryMethod === undefined ) {
    			const message = "unsupported interpolation for " +
    				this.ValueTypeName + " keyframe track named " + this.name;
    			if ( this.createInterpolant === undefined ) {
    				if ( interpolation !== this.DefaultInterpolation ) {
    					this.setInterpolation( this.DefaultInterpolation );
    				} else {
    					throw new Error( message );
    				}
    			}
    			console.warn( 'THREE.KeyframeTrack:', message );
    			return this;
    		}
    		this.createInterpolant = factoryMethod;
    		return this;
    	},
    	getInterpolation: function () {
    		switch ( this.createInterpolant ) {
    			case this.InterpolantFactoryMethodDiscrete:
    				return InterpolateDiscrete;
    			case this.InterpolantFactoryMethodLinear:
    				return InterpolateLinear;
    			case this.InterpolantFactoryMethodSmooth:
    				return InterpolateSmooth;
    		}
    	},
    	getValueSize: function () {
    		return this.values.length / this.times.length;
    	},
    	shift: function ( timeOffset ) {
    		if ( timeOffset !== 0.0 ) {
    			const times = this.times;
    			for ( let i = 0, n = times.length; i !== n; ++ i ) {
    				times[ i ] += timeOffset;
    			}
    		}
    		return this;
    	},
    	scale: function ( timeScale ) {
    		if ( timeScale !== 1.0 ) {
    			const times = this.times;
    			for ( let i = 0, n = times.length; i !== n; ++ i ) {
    				times[ i ] *= timeScale;
    			}
    		}
    		return this;
    	},
    	trim: function ( startTime, endTime ) {
    		const times = this.times,
    			nKeys = times.length;
    		let from = 0,
    			to = nKeys - 1;
    		while ( from !== nKeys && times[ from ] < startTime ) {
    			++ from;
    		}
    		while ( to !== - 1 && times[ to ] > endTime ) {
    			-- to;
    		}
    		++ to;
    		if ( from !== 0 || to !== nKeys ) {
    			if ( from >= to ) {
    				to = Math.max( to, 1 );
    				from = to - 1;
    			}
    			const stride = this.getValueSize();
    			this.times = AnimationUtils.arraySlice( times, from, to );
    			this.values = AnimationUtils.arraySlice( this.values, from * stride, to * stride );
    		}
    		return this;
    	},
    	validate: function () {
    		let valid = true;
    		const valueSize = this.getValueSize();
    		if ( valueSize - Math.floor( valueSize ) !== 0 ) {
    			console.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );
    			valid = false;
    		}
    		const times = this.times,
    			values = this.values,
    			nKeys = times.length;
    		if ( nKeys === 0 ) {
    			console.error( 'THREE.KeyframeTrack: Track is empty.', this );
    			valid = false;
    		}
    		let prevTime = null;
    		for ( let i = 0; i !== nKeys; i ++ ) {
    			const currTime = times[ i ];
    			if ( typeof currTime === 'number' && isNaN( currTime ) ) {
    				console.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );
    				valid = false;
    				break;
    			}
    			if ( prevTime !== null && prevTime > currTime ) {
    				console.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );
    				valid = false;
    				break;
    			}
    			prevTime = currTime;
    		}
    		if ( values !== undefined ) {
    			if ( AnimationUtils.isTypedArray( values ) ) {
    				for ( let i = 0, n = values.length; i !== n; ++ i ) {
    					const value = values[ i ];
    					if ( isNaN( value ) ) {
    						console.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );
    						valid = false;
    						break;
    					}
    				}
    			}
    		}
    		return valid;
    	},
    	optimize: function () {
    		const times = AnimationUtils.arraySlice( this.times ),
    			values = AnimationUtils.arraySlice( this.values ),
    			stride = this.getValueSize(),
    			smoothInterpolation = this.getInterpolation() === InterpolateSmooth,
    			lastIndex = times.length - 1;
    		let writeIndex = 1;
    		for ( let i = 1; i < lastIndex; ++ i ) {
    			let keep = false;
    			const time = times[ i ];
    			const timeNext = times[ i + 1 ];
    			if ( time !== timeNext && ( i !== 1 || time !== time[ 0 ] ) ) {
    				if ( ! smoothInterpolation ) {
    					const offset = i * stride,
    						offsetP = offset - stride,
    						offsetN = offset + stride;
    					for ( let j = 0; j !== stride; ++ j ) {
    						const value = values[ offset + j ];
    						if ( value !== values[ offsetP + j ] ||
    							value !== values[ offsetN + j ] ) {
    							keep = true;
    							break;
    						}
    					}
    				} else {
    					keep = true;
    				}
    			}
    			if ( keep ) {
    				if ( i !== writeIndex ) {
    					times[ writeIndex ] = times[ i ];
    					const readOffset = i * stride,
    						writeOffset = writeIndex * stride;
    					for ( let j = 0; j !== stride; ++ j ) {
    						values[ writeOffset + j ] = values[ readOffset + j ];
    					}
    				}
    				++ writeIndex;
    			}
    		}
    		if ( lastIndex > 0 ) {
    			times[ writeIndex ] = times[ lastIndex ];
    			for ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {
    				values[ writeOffset + j ] = values[ readOffset + j ];
    			}
    			++ writeIndex;
    		}
    		if ( writeIndex !== times.length ) {
    			this.times = AnimationUtils.arraySlice( times, 0, writeIndex );
    			this.values = AnimationUtils.arraySlice( values, 0, writeIndex * stride );
    		} else {
    			this.times = times;
    			this.values = values;
    		}
    		return this;
    	},
    	clone: function () {
    		const times = AnimationUtils.arraySlice( this.times, 0 );
    		const values = AnimationUtils.arraySlice( this.values, 0 );
    		const TypedKeyframeTrack = this.constructor;
    		const track = new TypedKeyframeTrack( this.name, times, values );
    		track.createInterpolant = this.createInterpolant;
    		return track;
    	}
    } );
    function BooleanKeyframeTrack( name, times, values ) {
    	KeyframeTrack.call( this, name, times, values );
    }
    BooleanKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
    	constructor: BooleanKeyframeTrack,
    	ValueTypeName: 'bool',
    	ValueBufferType: Array,
    	DefaultInterpolation: InterpolateDiscrete,
    	InterpolantFactoryMethodLinear: undefined,
    	InterpolantFactoryMethodSmooth: undefined
    } );
    function ColorKeyframeTrack( name, times, values, interpolation ) {
    	KeyframeTrack.call( this, name, times, values, interpolation );
    }
    ColorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
    	constructor: ColorKeyframeTrack,
    	ValueTypeName: 'color'
    } );
    function NumberKeyframeTrack( name, times, values, interpolation ) {
    	KeyframeTrack.call( this, name, times, values, interpolation );
    }
    NumberKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
    	constructor: NumberKeyframeTrack,
    	ValueTypeName: 'number'
    } );
    function QuaternionLinearInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
    	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
    }
    QuaternionLinearInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {
    	constructor: QuaternionLinearInterpolant,
    	interpolate_: function ( i1, t0, t, t1 ) {
    		const result = this.resultBuffer,
    			values = this.sampleValues,
    			stride = this.valueSize,
    			alpha = ( t - t0 ) / ( t1 - t0 );
    		let offset = i1 * stride;
    		for ( let end = offset + stride; offset !== end; offset += 4 ) {
    			Quaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );
    		}
    		return result;
    	}
    } );
    function QuaternionKeyframeTrack( name, times, values, interpolation ) {
    	KeyframeTrack.call( this, name, times, values, interpolation );
    }
    QuaternionKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
    	constructor: QuaternionKeyframeTrack,
    	ValueTypeName: 'quaternion',
    	DefaultInterpolation: InterpolateLinear,
    	InterpolantFactoryMethodLinear: function ( result ) {
    		return new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );
    	},
    	InterpolantFactoryMethodSmooth: undefined
    } );
    function StringKeyframeTrack( name, times, values, interpolation ) {
    	KeyframeTrack.call( this, name, times, values, interpolation );
    }
    StringKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
    	constructor: StringKeyframeTrack,
    	ValueTypeName: 'string',
    	ValueBufferType: Array,
    	DefaultInterpolation: InterpolateDiscrete,
    	InterpolantFactoryMethodLinear: undefined,
    	InterpolantFactoryMethodSmooth: undefined
    } );
    function VectorKeyframeTrack( name, times, values, interpolation ) {
    	KeyframeTrack.call( this, name, times, values, interpolation );
    }
    VectorKeyframeTrack.prototype = Object.assign( Object.create( KeyframeTrack.prototype ), {
    	constructor: VectorKeyframeTrack,
    	ValueTypeName: 'vector'
    } );
    function AnimationClip( name, duration, tracks, blendMode ) {
    	this.name = name;
    	this.tracks = tracks;
    	this.duration = ( duration !== undefined ) ? duration : - 1;
    	this.blendMode = ( blendMode !== undefined ) ? blendMode : NormalAnimationBlendMode;
    	this.uuid = MathUtils.generateUUID();
    	if ( this.duration < 0 ) {
    		this.resetDuration();
    	}
    }
    function getTrackTypeForValueTypeName( typeName ) {
    	switch ( typeName.toLowerCase() ) {
    		case 'scalar':
    		case 'double':
    		case 'float':
    		case 'number':
    		case 'integer':
    			return NumberKeyframeTrack;
    		case 'vector':
    		case 'vector2':
    		case 'vector3':
    		case 'vector4':
    			return VectorKeyframeTrack;
    		case 'color':
    			return ColorKeyframeTrack;
    		case 'quaternion':
    			return QuaternionKeyframeTrack;
    		case 'bool':
    		case 'boolean':
    			return BooleanKeyframeTrack;
    		case 'string':
    			return StringKeyframeTrack;
    	}
    	throw new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );
    }
    function parseKeyframeTrack( json ) {
    	if ( json.type === undefined ) {
    		throw new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );
    	}
    	const trackType = getTrackTypeForValueTypeName( json.type );
    	if ( json.times === undefined ) {
    		const times = [], values = [];
    		AnimationUtils.flattenJSON( json.keys, times, values, 'value' );
    		json.times = times;
    		json.values = values;
    	}
    	if ( trackType.parse !== undefined ) {
    		return trackType.parse( json );
    	} else {
    		return new trackType( json.name, json.times, json.values, json.interpolation );
    	}
    }
    Object.assign( AnimationClip, {
    	parse: function ( json ) {
    		const tracks = [],
    			jsonTracks = json.tracks,
    			frameTime = 1.0 / ( json.fps || 1.0 );
    		for ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {
    			tracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );
    		}
    		return new AnimationClip( json.name, json.duration, tracks, json.blendMode );
    	},
    	toJSON: function ( clip ) {
    		const tracks = [],
    			clipTracks = clip.tracks;
    		const json = {
    			'name': clip.name,
    			'duration': clip.duration,
    			'tracks': tracks,
    			'uuid': clip.uuid,
    			'blendMode': clip.blendMode
    		};
    		for ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {
    			tracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );
    		}
    		return json;
    	},
    	CreateFromMorphTargetSequence: function ( name, morphTargetSequence, fps, noLoop ) {
    		const numMorphTargets = morphTargetSequence.length;
    		const tracks = [];
    		for ( let i = 0; i < numMorphTargets; i ++ ) {
    			let times = [];
    			let values = [];
    			times.push(
    				( i + numMorphTargets - 1 ) % numMorphTargets,
    				i,
    				( i + 1 ) % numMorphTargets );
    			values.push( 0, 1, 0 );
    			const order = AnimationUtils.getKeyframeOrder( times );
    			times = AnimationUtils.sortedArray( times, 1, order );
    			values = AnimationUtils.sortedArray( values, 1, order );
    			if ( ! noLoop && times[ 0 ] === 0 ) {
    				times.push( numMorphTargets );
    				values.push( values[ 0 ] );
    			}
    			tracks.push(
    				new NumberKeyframeTrack(
    					'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
    					times, values
    				).scale( 1.0 / fps ) );
    		}
    		return new AnimationClip( name, - 1, tracks );
    	},
    	findByName: function ( objectOrClipArray, name ) {
    		let clipArray = objectOrClipArray;
    		if ( ! Array.isArray( objectOrClipArray ) ) {
    			const o = objectOrClipArray;
    			clipArray = o.geometry && o.geometry.animations || o.animations;
    		}
    		for ( let i = 0; i < clipArray.length; i ++ ) {
    			if ( clipArray[ i ].name === name ) {
    				return clipArray[ i ];
    			}
    		}
    		return null;
    	},
    	CreateClipsFromMorphTargetSequences: function ( morphTargets, fps, noLoop ) {
    		const animationToMorphTargets = {};
    		const pattern = /^([\w-]*?)([\d]+)$/;
    		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {
    			const morphTarget = morphTargets[ i ];
    			const parts = morphTarget.name.match( pattern );
    			if ( parts && parts.length > 1 ) {
    				const name = parts[ 1 ];
    				let animationMorphTargets = animationToMorphTargets[ name ];
    				if ( ! animationMorphTargets ) {
    					animationToMorphTargets[ name ] = animationMorphTargets = [];
    				}
    				animationMorphTargets.push( morphTarget );
    			}
    		}
    		const clips = [];
    		for ( const name in animationToMorphTargets ) {
    			clips.push( AnimationClip.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );
    		}
    		return clips;
    	},
    	parseAnimation: function ( animation, bones ) {
    		if ( ! animation ) {
    			console.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );
    			return null;
    		}
    		const addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {
    			if ( animationKeys.length !== 0 ) {
    				const times = [];
    				const values = [];
    				AnimationUtils.flattenJSON( animationKeys, times, values, propertyName );
    				if ( times.length !== 0 ) {
    					destTracks.push( new trackType( trackName, times, values ) );
    				}
    			}
    		};
    		const tracks = [];
    		const clipName = animation.name || 'default';
    		const fps = animation.fps || 30;
    		const blendMode = animation.blendMode;
    		let duration = animation.length || - 1;
    		const hierarchyTracks = animation.hierarchy || [];
    		for ( let h = 0; h < hierarchyTracks.length; h ++ ) {
    			const animationKeys = hierarchyTracks[ h ].keys;
    			if ( ! animationKeys || animationKeys.length === 0 ) continue;
    			if ( animationKeys[ 0 ].morphTargets ) {
    				const morphTargetNames = {};
    				let k;
    				for ( k = 0; k < animationKeys.length; k ++ ) {
    					if ( animationKeys[ k ].morphTargets ) {
    						for ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {
    							morphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;
    						}
    					}
    				}
    				for ( const morphTargetName in morphTargetNames ) {
    					const times = [];
    					const values = [];
    					for ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {
    						const animationKey = animationKeys[ k ];
    						times.push( animationKey.time );
    						values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );
    					}
    					tracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );
    				}
    				duration = morphTargetNames.length * ( fps || 1.0 );
    			} else {
    				const boneName = '.bones[' + bones[ h ].name + ']';
    				addNonemptyTrack(
    					VectorKeyframeTrack, boneName + '.position',
    					animationKeys, 'pos', tracks );
    				addNonemptyTrack(
    					QuaternionKeyframeTrack, boneName + '.quaternion',
    					animationKeys, 'rot', tracks );
    				addNonemptyTrack(
    					VectorKeyframeTrack, boneName + '.scale',
    					animationKeys, 'scl', tracks );
    			}
    		}
    		if ( tracks.length === 0 ) {
    			return null;
    		}
    		const clip = new AnimationClip( clipName, duration, tracks, blendMode );
    		return clip;
    	}
    } );
    Object.assign( AnimationClip.prototype, {
    	resetDuration: function () {
    		const tracks = this.tracks;
    		let duration = 0;
    		for ( let i = 0, n = tracks.length; i !== n; ++ i ) {
    			const track = this.tracks[ i ];
    			duration = Math.max( duration, track.times[ track.times.length - 1 ] );
    		}
    		this.duration = duration;
    		return this;
    	},
    	trim: function () {
    		for ( let i = 0; i < this.tracks.length; i ++ ) {
    			this.tracks[ i ].trim( 0, this.duration );
    		}
    		return this;
    	},
    	validate: function () {
    		let valid = true;
    		for ( let i = 0; i < this.tracks.length; i ++ ) {
    			valid = valid && this.tracks[ i ].validate();
    		}
    		return valid;
    	},
    	optimize: function () {
    		for ( let i = 0; i < this.tracks.length; i ++ ) {
    			this.tracks[ i ].optimize();
    		}
    		return this;
    	},
    	clone: function () {
    		const tracks = [];
    		for ( let i = 0; i < this.tracks.length; i ++ ) {
    			tracks.push( this.tracks[ i ].clone() );
    		}
    		return new AnimationClip( this.name, this.duration, tracks, this.blendMode );
    	}
    } );
    const Cache = {
    	enabled: false,
    	files: {},
    	add: function ( key, file ) {
    		if ( this.enabled === false ) return;
    		this.files[ key ] = file;
    	},
    	get: function ( key ) {
    		if ( this.enabled === false ) return;
    		return this.files[ key ];
    	},
    	remove: function ( key ) {
    		delete this.files[ key ];
    	},
    	clear: function () {
    		this.files = {};
    	}
    };
    function LoadingManager( onLoad, onProgress, onError ) {
    	const scope = this;
    	let isLoading = false;
    	let itemsLoaded = 0;
    	let itemsTotal = 0;
    	let urlModifier = undefined;
    	const handlers = [];
    	this.onStart = undefined;
    	this.onLoad = onLoad;
    	this.onProgress = onProgress;
    	this.onError = onError;
    	this.itemStart = function ( url ) {
    		itemsTotal ++;
    		if ( isLoading === false ) {
    			if ( scope.onStart !== undefined ) {
    				scope.onStart( url, itemsLoaded, itemsTotal );
    			}
    		}
    		isLoading = true;
    	};
    	this.itemEnd = function ( url ) {
    		itemsLoaded ++;
    		if ( scope.onProgress !== undefined ) {
    			scope.onProgress( url, itemsLoaded, itemsTotal );
    		}
    		if ( itemsLoaded === itemsTotal ) {
    			isLoading = false;
    			if ( scope.onLoad !== undefined ) {
    				scope.onLoad();
    			}
    		}
    	};
    	this.itemError = function ( url ) {
    		if ( scope.onError !== undefined ) {
    			scope.onError( url );
    		}
    	};
    	this.resolveURL = function ( url ) {
    		if ( urlModifier ) {
    			return urlModifier( url );
    		}
    		return url;
    	};
    	this.setURLModifier = function ( transform ) {
    		urlModifier = transform;
    		return this;
    	};
    	this.addHandler = function ( regex, loader ) {
    		handlers.push( regex, loader );
    		return this;
    	};
    	this.removeHandler = function ( regex ) {
    		const index = handlers.indexOf( regex );
    		if ( index !== - 1 ) {
    			handlers.splice( index, 2 );
    		}
    		return this;
    	};
    	this.getHandler = function ( file ) {
    		for ( let i = 0, l = handlers.length; i < l; i += 2 ) {
    			const regex = handlers[ i ];
    			const loader = handlers[ i + 1 ];
    			if ( regex.global ) regex.lastIndex = 0;
    			if ( regex.test( file ) ) {
    				return loader;
    			}
    		}
    		return null;
    	};
    }
    const DefaultLoadingManager = new LoadingManager();
    function Loader( manager ) {
    	this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
    	this.crossOrigin = 'anonymous';
    	this.path = '';
    	this.resourcePath = '';
    	this.requestHeader = {};
    }
    Object.assign( Loader.prototype, {
    	load: function (  ) {},
    	loadAsync: function ( url, onProgress ) {
    		const scope = this;
    		return new Promise( function ( resolve, reject ) {
    			scope.load( url, resolve, onProgress, reject );
    		} );
    	},
    	parse: function (  ) {},
    	setCrossOrigin: function ( crossOrigin ) {
    		this.crossOrigin = crossOrigin;
    		return this;
    	},
    	setPath: function ( path ) {
    		this.path = path;
    		return this;
    	},
    	setResourcePath: function ( resourcePath ) {
    		this.resourcePath = resourcePath;
    		return this;
    	},
    	setRequestHeader: function ( requestHeader ) {
    		this.requestHeader = requestHeader;
    		return this;
    	}
    } );
    const loading = {};
    function FileLoader( manager ) {
    	Loader.call( this, manager );
    }
    FileLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: FileLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		if ( url === undefined ) url = '';
    		if ( this.path !== undefined ) url = this.path + url;
    		url = this.manager.resolveURL( url );
    		const scope = this;
    		const cached = Cache.get( url );
    		if ( cached !== undefined ) {
    			scope.manager.itemStart( url );
    			setTimeout( function () {
    				if ( onLoad ) onLoad( cached );
    				scope.manager.itemEnd( url );
    			}, 0 );
    			return cached;
    		}
    		if ( loading[ url ] !== undefined ) {
    			loading[ url ].push( {
    				onLoad: onLoad,
    				onProgress: onProgress,
    				onError: onError
    			} );
    			return;
    		}
    		const dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;
    		const dataUriRegexResult = url.match( dataUriRegex );
    		let request;
    		if ( dataUriRegexResult ) {
    			const mimeType = dataUriRegexResult[ 1 ];
    			const isBase64 = !! dataUriRegexResult[ 2 ];
    			let data = dataUriRegexResult[ 3 ];
    			data = decodeURIComponent( data );
    			if ( isBase64 ) data = atob( data );
    			try {
    				let response;
    				const responseType = ( this.responseType || '' ).toLowerCase();
    				switch ( responseType ) {
    					case 'arraybuffer':
    					case 'blob':
    						const view = new Uint8Array( data.length );
    						for ( let i = 0; i < data.length; i ++ ) {
    							view[ i ] = data.charCodeAt( i );
    						}
    						if ( responseType === 'blob' ) {
    							response = new Blob( [ view.buffer ], { type: mimeType } );
    						} else {
    							response = view.buffer;
    						}
    						break;
    					case 'document':
    						const parser = new DOMParser();
    						response = parser.parseFromString( data, mimeType );
    						break;
    					case 'json':
    						response = JSON.parse( data );
    						break;
    					default:
    						response = data;
    						break;
    				}
    				setTimeout( function () {
    					if ( onLoad ) onLoad( response );
    					scope.manager.itemEnd( url );
    				}, 0 );
    			} catch ( error ) {
    				setTimeout( function () {
    					if ( onError ) onError( error );
    					scope.manager.itemError( url );
    					scope.manager.itemEnd( url );
    				}, 0 );
    			}
    		} else {
    			loading[ url ] = [];
    			loading[ url ].push( {
    				onLoad: onLoad,
    				onProgress: onProgress,
    				onError: onError
    			} );
    			request = new XMLHttpRequest();
    			request.open( 'GET', url, true );
    			request.addEventListener( 'load', function ( event ) {
    				const response = this.response;
    				const callbacks = loading[ url ];
    				delete loading[ url ];
    				if ( this.status === 200 || this.status === 0 ) {
    					if ( this.status === 0 ) console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );
    					Cache.add( url, response );
    					for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
    						const callback = callbacks[ i ];
    						if ( callback.onLoad ) callback.onLoad( response );
    					}
    					scope.manager.itemEnd( url );
    				} else {
    					for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
    						const callback = callbacks[ i ];
    						if ( callback.onError ) callback.onError( event );
    					}
    					scope.manager.itemError( url );
    					scope.manager.itemEnd( url );
    				}
    			}, false );
    			request.addEventListener( 'progress', function ( event ) {
    				const callbacks = loading[ url ];
    				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
    					const callback = callbacks[ i ];
    					if ( callback.onProgress ) callback.onProgress( event );
    				}
    			}, false );
    			request.addEventListener( 'error', function ( event ) {
    				const callbacks = loading[ url ];
    				delete loading[ url ];
    				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
    					const callback = callbacks[ i ];
    					if ( callback.onError ) callback.onError( event );
    				}
    				scope.manager.itemError( url );
    				scope.manager.itemEnd( url );
    			}, false );
    			request.addEventListener( 'abort', function ( event ) {
    				const callbacks = loading[ url ];
    				delete loading[ url ];
    				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
    					const callback = callbacks[ i ];
    					if ( callback.onError ) callback.onError( event );
    				}
    				scope.manager.itemError( url );
    				scope.manager.itemEnd( url );
    			}, false );
    			if ( this.responseType !== undefined ) request.responseType = this.responseType;
    			if ( this.withCredentials !== undefined ) request.withCredentials = this.withCredentials;
    			if ( request.overrideMimeType ) request.overrideMimeType( this.mimeType !== undefined ? this.mimeType : 'text/plain' );
    			for ( const header in this.requestHeader ) {
    				request.setRequestHeader( header, this.requestHeader[ header ] );
    			}
    			request.send( null );
    		}
    		scope.manager.itemStart( url );
    		return request;
    	},
    	setResponseType: function ( value ) {
    		this.responseType = value;
    		return this;
    	},
    	setWithCredentials: function ( value ) {
    		this.withCredentials = value;
    		return this;
    	},
    	setMimeType: function ( value ) {
    		this.mimeType = value;
    		return this;
    	}
    } );
    function AnimationLoader( manager ) {
    	Loader.call( this, manager );
    }
    AnimationLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: AnimationLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const loader = new FileLoader( scope.manager );
    		loader.setPath( scope.path );
    		loader.setRequestHeader( scope.requestHeader );
    		loader.load( url, function ( text ) {
    			try {
    				onLoad( scope.parse( JSON.parse( text ) ) );
    			} catch ( e ) {
    				if ( onError ) {
    					onError( e );
    				} else {
    					console.error( e );
    				}
    				scope.manager.itemError( url );
    			}
    		}, onProgress, onError );
    	},
    	parse: function ( json ) {
    		const animations = [];
    		for ( let i = 0; i < json.length; i ++ ) {
    			const clip = AnimationClip.parse( json[ i ] );
    			animations.push( clip );
    		}
    		return animations;
    	}
    } );
    function CompressedTextureLoader( manager ) {
    	Loader.call( this, manager );
    }
    CompressedTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: CompressedTextureLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const images = [];
    		const texture = new CompressedTexture();
    		texture.image = images;
    		const loader = new FileLoader( this.manager );
    		loader.setPath( this.path );
    		loader.setResponseType( 'arraybuffer' );
    		loader.setRequestHeader( this.requestHeader );
    		let loaded = 0;
    		function loadTexture( i ) {
    			loader.load( url[ i ], function ( buffer ) {
    				const texDatas = scope.parse( buffer, true );
    				images[ i ] = {
    					width: texDatas.width,
    					height: texDatas.height,
    					format: texDatas.format,
    					mipmaps: texDatas.mipmaps
    				};
    				loaded += 1;
    				if ( loaded === 6 ) {
    					if ( texDatas.mipmapCount === 1 )
    						texture.minFilter = LinearFilter;
    					texture.format = texDatas.format;
    					texture.needsUpdate = true;
    					if ( onLoad ) onLoad( texture );
    				}
    			}, onProgress, onError );
    		}
    		if ( Array.isArray( url ) ) {
    			for ( let i = 0, il = url.length; i < il; ++ i ) {
    				loadTexture( i );
    			}
    		} else {
    			loader.load( url, function ( buffer ) {
    				const texDatas = scope.parse( buffer, true );
    				if ( texDatas.isCubemap ) {
    					const faces = texDatas.mipmaps.length / texDatas.mipmapCount;
    					for ( let f = 0; f < faces; f ++ ) {
    						images[ f ] = { mipmaps: [] };
    						for ( let i = 0; i < texDatas.mipmapCount; i ++ ) {
    							images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
    							images[ f ].format = texDatas.format;
    							images[ f ].width = texDatas.width;
    							images[ f ].height = texDatas.height;
    						}
    					}
    				} else {
    					texture.image.width = texDatas.width;
    					texture.image.height = texDatas.height;
    					texture.mipmaps = texDatas.mipmaps;
    				}
    				if ( texDatas.mipmapCount === 1 ) {
    					texture.minFilter = LinearFilter;
    				}
    				texture.format = texDatas.format;
    				texture.needsUpdate = true;
    				if ( onLoad ) onLoad( texture );
    			}, onProgress, onError );
    		}
    		return texture;
    	}
    } );
    function ImageLoader( manager ) {
    	Loader.call( this, manager );
    }
    ImageLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: ImageLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		if ( this.path !== undefined ) url = this.path + url;
    		url = this.manager.resolveURL( url );
    		const scope = this;
    		const cached = Cache.get( url );
    		if ( cached !== undefined ) {
    			scope.manager.itemStart( url );
    			setTimeout( function () {
    				if ( onLoad ) onLoad( cached );
    				scope.manager.itemEnd( url );
    			}, 0 );
    			return cached;
    		}
    		const image = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'img' );
    		function onImageLoad() {
    			image.removeEventListener( 'load', onImageLoad, false );
    			image.removeEventListener( 'error', onImageError, false );
    			Cache.add( url, this );
    			if ( onLoad ) onLoad( this );
    			scope.manager.itemEnd( url );
    		}
    		function onImageError( event ) {
    			image.removeEventListener( 'load', onImageLoad, false );
    			image.removeEventListener( 'error', onImageError, false );
    			if ( onError ) onError( event );
    			scope.manager.itemError( url );
    			scope.manager.itemEnd( url );
    		}
    		image.addEventListener( 'load', onImageLoad, false );
    		image.addEventListener( 'error', onImageError, false );
    		if ( url.substr( 0, 5 ) !== 'data:' ) {
    			if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;
    		}
    		scope.manager.itemStart( url );
    		image.src = url;
    		return image;
    	}
    } );
    function CubeTextureLoader( manager ) {
    	Loader.call( this, manager );
    }
    CubeTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: CubeTextureLoader,
    	load: function ( urls, onLoad, onProgress, onError ) {
    		const texture = new CubeTexture();
    		const loader = new ImageLoader( this.manager );
    		loader.setCrossOrigin( this.crossOrigin );
    		loader.setPath( this.path );
    		let loaded = 0;
    		function loadTexture( i ) {
    			loader.load( urls[ i ], function ( image ) {
    				texture.images[ i ] = image;
    				loaded ++;
    				if ( loaded === 6 ) {
    					texture.needsUpdate = true;
    					if ( onLoad ) onLoad( texture );
    				}
    			}, undefined, onError );
    		}
    		for ( let i = 0; i < urls.length; ++ i ) {
    			loadTexture( i );
    		}
    		return texture;
    	}
    } );
    function DataTextureLoader( manager ) {
    	Loader.call( this, manager );
    }
    DataTextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: DataTextureLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const texture = new DataTexture();
    		const loader = new FileLoader( this.manager );
    		loader.setResponseType( 'arraybuffer' );
    		loader.setRequestHeader( this.requestHeader );
    		loader.setPath( this.path );
    		loader.load( url, function ( buffer ) {
    			const texData = scope.parse( buffer );
    			if ( ! texData ) return;
    			if ( texData.image !== undefined ) {
    				texture.image = texData.image;
    			} else if ( texData.data !== undefined ) {
    				texture.image.width = texData.width;
    				texture.image.height = texData.height;
    				texture.image.data = texData.data;
    			}
    			texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
    			texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;
    			texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
    			texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;
    			texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;
    			if ( texData.format !== undefined ) {
    				texture.format = texData.format;
    			}
    			if ( texData.type !== undefined ) {
    				texture.type = texData.type;
    			}
    			if ( texData.mipmaps !== undefined ) {
    				texture.mipmaps = texData.mipmaps;
    				texture.minFilter = LinearMipmapLinearFilter;
    			}
    			if ( texData.mipmapCount === 1 ) {
    				texture.minFilter = LinearFilter;
    			}
    			texture.needsUpdate = true;
    			if ( onLoad ) onLoad( texture, texData );
    		}, onProgress, onError );
    		return texture;
    	}
    } );
    function TextureLoader( manager ) {
    	Loader.call( this, manager );
    }
    TextureLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: TextureLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const texture = new Texture();
    		const loader = new ImageLoader( this.manager );
    		loader.setCrossOrigin( this.crossOrigin );
    		loader.setPath( this.path );
    		loader.load( url, function ( image ) {
    			texture.image = image;
    			const isJPEG = url.search( /\.jpe?g($|\?)/i ) > 0 || url.search( /^data\:image\/jpeg/ ) === 0;
    			texture.format = isJPEG ? RGBFormat : RGBAFormat;
    			texture.needsUpdate = true;
    			if ( onLoad !== undefined ) {
    				onLoad( texture );
    			}
    		}, onProgress, onError );
    		return texture;
    	}
    } );
    function Curve() {
    	this.type = 'Curve';
    	this.arcLengthDivisions = 200;
    }
    Object.assign( Curve.prototype, {
    	getPoint: function (  ) {
    		console.warn( 'THREE.Curve: .getPoint() not implemented.' );
    		return null;
    	},
    	getPointAt: function ( u, optionalTarget ) {
    		const t = this.getUtoTmapping( u );
    		return this.getPoint( t, optionalTarget );
    	},
    	getPoints: function ( divisions ) {
    		if ( divisions === undefined ) divisions = 5;
    		const points = [];
    		for ( let d = 0; d <= divisions; d ++ ) {
    			points.push( this.getPoint( d / divisions ) );
    		}
    		return points;
    	},
    	getSpacedPoints: function ( divisions ) {
    		if ( divisions === undefined ) divisions = 5;
    		const points = [];
    		for ( let d = 0; d <= divisions; d ++ ) {
    			points.push( this.getPointAt( d / divisions ) );
    		}
    		return points;
    	},
    	getLength: function () {
    		const lengths = this.getLengths();
    		return lengths[ lengths.length - 1 ];
    	},
    	getLengths: function ( divisions ) {
    		if ( divisions === undefined ) divisions = this.arcLengthDivisions;
    		if ( this.cacheArcLengths &&
    			( this.cacheArcLengths.length === divisions + 1 ) &&
    			! this.needsUpdate ) {
    			return this.cacheArcLengths;
    		}
    		this.needsUpdate = false;
    		const cache = [];
    		let current, last = this.getPoint( 0 );
    		let sum = 0;
    		cache.push( 0 );
    		for ( let p = 1; p <= divisions; p ++ ) {
    			current = this.getPoint( p / divisions );
    			sum += current.distanceTo( last );
    			cache.push( sum );
    			last = current;
    		}
    		this.cacheArcLengths = cache;
    		return cache;
    	},
    	updateArcLengths: function () {
    		this.needsUpdate = true;
    		this.getLengths();
    	},
    	getUtoTmapping: function ( u, distance ) {
    		const arcLengths = this.getLengths();
    		let i = 0;
    		const il = arcLengths.length;
    		let targetArcLength;
    		if ( distance ) {
    			targetArcLength = distance;
    		} else {
    			targetArcLength = u * arcLengths[ il - 1 ];
    		}
    		let low = 0, high = il - 1, comparison;
    		while ( low <= high ) {
    			i = Math.floor( low + ( high - low ) / 2 );
    			comparison = arcLengths[ i ] - targetArcLength;
    			if ( comparison < 0 ) {
    				low = i + 1;
    			} else if ( comparison > 0 ) {
    				high = i - 1;
    			} else {
    				high = i;
    				break;
    			}
    		}
    		i = high;
    		if ( arcLengths[ i ] === targetArcLength ) {
    			return i / ( il - 1 );
    		}
    		const lengthBefore = arcLengths[ i ];
    		const lengthAfter = arcLengths[ i + 1 ];
    		const segmentLength = lengthAfter - lengthBefore;
    		const segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;
    		const t = ( i + segmentFraction ) / ( il - 1 );
    		return t;
    	},
    	getTangent: function ( t, optionalTarget ) {
    		const delta = 0.0001;
    		let t1 = t - delta;
    		let t2 = t + delta;
    		if ( t1 < 0 ) t1 = 0;
    		if ( t2 > 1 ) t2 = 1;
    		const pt1 = this.getPoint( t1 );
    		const pt2 = this.getPoint( t2 );
    		const tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );
    		tangent.copy( pt2 ).sub( pt1 ).normalize();
    		return tangent;
    	},
    	getTangentAt: function ( u, optionalTarget ) {
    		const t = this.getUtoTmapping( u );
    		return this.getTangent( t, optionalTarget );
    	},
    	computeFrenetFrames: function ( segments, closed ) {
    		const normal = new Vector3();
    		const tangents = [];
    		const normals = [];
    		const binormals = [];
    		const vec = new Vector3();
    		const mat = new Matrix4();
    		for ( let i = 0; i <= segments; i ++ ) {
    			const u = i / segments;
    			tangents[ i ] = this.getTangentAt( u, new Vector3() );
    			tangents[ i ].normalize();
    		}
    		normals[ 0 ] = new Vector3();
    		binormals[ 0 ] = new Vector3();
    		let min = Number.MAX_VALUE;
    		const tx = Math.abs( tangents[ 0 ].x );
    		const ty = Math.abs( tangents[ 0 ].y );
    		const tz = Math.abs( tangents[ 0 ].z );
    		if ( tx <= min ) {
    			min = tx;
    			normal.set( 1, 0, 0 );
    		}
    		if ( ty <= min ) {
    			min = ty;
    			normal.set( 0, 1, 0 );
    		}
    		if ( tz <= min ) {
    			normal.set( 0, 0, 1 );
    		}
    		vec.crossVectors( tangents[ 0 ], normal ).normalize();
    		normals[ 0 ].crossVectors( tangents[ 0 ], vec );
    		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );
    		for ( let i = 1; i <= segments; i ++ ) {
    			normals[ i ] = normals[ i - 1 ].clone();
    			binormals[ i ] = binormals[ i - 1 ].clone();
    			vec.crossVectors( tangents[ i - 1 ], tangents[ i ] );
    			if ( vec.length() > Number.EPSILON ) {
    				vec.normalize();
    				const theta = Math.acos( MathUtils.clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) );
    				normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );
    			}
    			binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
    		}
    		if ( closed === true ) {
    			let theta = Math.acos( MathUtils.clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );
    			theta /= segments;
    			if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {
    				theta = - theta;
    			}
    			for ( let i = 1; i <= segments; i ++ ) {
    				normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );
    				binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
    			}
    		}
    		return {
    			tangents: tangents,
    			normals: normals,
    			binormals: binormals
    		};
    	},
    	clone: function () {
    		return new this.constructor().copy( this );
    	},
    	copy: function ( source ) {
    		this.arcLengthDivisions = source.arcLengthDivisions;
    		return this;
    	},
    	toJSON: function () {
    		const data = {
    			metadata: {
    				version: 4.5,
    				type: 'Curve',
    				generator: 'Curve.toJSON'
    			}
    		};
    		data.arcLengthDivisions = this.arcLengthDivisions;
    		data.type = this.type;
    		return data;
    	},
    	fromJSON: function ( json ) {
    		this.arcLengthDivisions = json.arcLengthDivisions;
    		return this;
    	}
    } );
    function EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
    	Curve.call( this );
    	this.type = 'EllipseCurve';
    	this.aX = aX || 0;
    	this.aY = aY || 0;
    	this.xRadius = xRadius || 1;
    	this.yRadius = yRadius || 1;
    	this.aStartAngle = aStartAngle || 0;
    	this.aEndAngle = aEndAngle || 2 * Math.PI;
    	this.aClockwise = aClockwise || false;
    	this.aRotation = aRotation || 0;
    }
    EllipseCurve.prototype = Object.create( Curve.prototype );
    EllipseCurve.prototype.constructor = EllipseCurve;
    EllipseCurve.prototype.isEllipseCurve = true;
    EllipseCurve.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector2();
    	const twoPi = Math.PI * 2;
    	let deltaAngle = this.aEndAngle - this.aStartAngle;
    	const samePoints = Math.abs( deltaAngle ) < Number.EPSILON;
    	while ( deltaAngle < 0 ) deltaAngle += twoPi;
    	while ( deltaAngle > twoPi ) deltaAngle -= twoPi;
    	if ( deltaAngle < Number.EPSILON ) {
    		if ( samePoints ) {
    			deltaAngle = 0;
    		} else {
    			deltaAngle = twoPi;
    		}
    	}
    	if ( this.aClockwise === true && ! samePoints ) {
    		if ( deltaAngle === twoPi ) {
    			deltaAngle = - twoPi;
    		} else {
    			deltaAngle = deltaAngle - twoPi;
    		}
    	}
    	const angle = this.aStartAngle + t * deltaAngle;
    	let x = this.aX + this.xRadius * Math.cos( angle );
    	let y = this.aY + this.yRadius * Math.sin( angle );
    	if ( this.aRotation !== 0 ) {
    		const cos = Math.cos( this.aRotation );
    		const sin = Math.sin( this.aRotation );
    		const tx = x - this.aX;
    		const ty = y - this.aY;
    		x = tx * cos - ty * sin + this.aX;
    		y = tx * sin + ty * cos + this.aY;
    	}
    	return point.set( x, y );
    };
    EllipseCurve.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.aX = source.aX;
    	this.aY = source.aY;
    	this.xRadius = source.xRadius;
    	this.yRadius = source.yRadius;
    	this.aStartAngle = source.aStartAngle;
    	this.aEndAngle = source.aEndAngle;
    	this.aClockwise = source.aClockwise;
    	this.aRotation = source.aRotation;
    	return this;
    };
    EllipseCurve.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.aX = this.aX;
    	data.aY = this.aY;
    	data.xRadius = this.xRadius;
    	data.yRadius = this.yRadius;
    	data.aStartAngle = this.aStartAngle;
    	data.aEndAngle = this.aEndAngle;
    	data.aClockwise = this.aClockwise;
    	data.aRotation = this.aRotation;
    	return data;
    };
    EllipseCurve.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.aX = json.aX;
    	this.aY = json.aY;
    	this.xRadius = json.xRadius;
    	this.yRadius = json.yRadius;
    	this.aStartAngle = json.aStartAngle;
    	this.aEndAngle = json.aEndAngle;
    	this.aClockwise = json.aClockwise;
    	this.aRotation = json.aRotation;
    	return this;
    };
    function ArcCurve( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
    	EllipseCurve.call( this, aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
    	this.type = 'ArcCurve';
    }
    ArcCurve.prototype = Object.create( EllipseCurve.prototype );
    ArcCurve.prototype.constructor = ArcCurve;
    ArcCurve.prototype.isArcCurve = true;
    function CubicPoly() {
    	let c0 = 0, c1 = 0, c2 = 0, c3 = 0;
    	function init( x0, x1, t0, t1 ) {
    		c0 = x0;
    		c1 = t0;
    		c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
    		c3 = 2 * x0 - 2 * x1 + t0 + t1;
    	}
    	return {
    		initCatmullRom: function ( x0, x1, x2, x3, tension ) {
    			init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );
    		},
    		initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {
    			let t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
    			let t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;
    			t1 *= dt1;
    			t2 *= dt1;
    			init( x1, x2, t1, t2 );
    		},
    		calc: function ( t ) {
    			const t2 = t * t;
    			const t3 = t2 * t;
    			return c0 + c1 * t + c2 * t2 + c3 * t3;
    		}
    	};
    }
    const tmp = new Vector3();
    const px = new CubicPoly(), py = new CubicPoly(), pz = new CubicPoly();
    function CatmullRomCurve3( points, closed, curveType, tension ) {
    	Curve.call( this );
    	this.type = 'CatmullRomCurve3';
    	this.points = points || [];
    	this.closed = closed || false;
    	this.curveType = curveType || 'centripetal';
    	this.tension = ( tension !== undefined ) ? tension : 0.5;
    }
    CatmullRomCurve3.prototype = Object.create( Curve.prototype );
    CatmullRomCurve3.prototype.constructor = CatmullRomCurve3;
    CatmullRomCurve3.prototype.isCatmullRomCurve3 = true;
    CatmullRomCurve3.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector3();
    	const points = this.points;
    	const l = points.length;
    	const p = ( l - ( this.closed ? 0 : 1 ) ) * t;
    	let intPoint = Math.floor( p );
    	let weight = p - intPoint;
    	if ( this.closed ) {
    		intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;
    	} else if ( weight === 0 && intPoint === l - 1 ) {
    		intPoint = l - 2;
    		weight = 1;
    	}
    	let p0, p3;
    	if ( this.closed || intPoint > 0 ) {
    		p0 = points[ ( intPoint - 1 ) % l ];
    	} else {
    		tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
    		p0 = tmp;
    	}
    	const p1 = points[ intPoint % l ];
    	const p2 = points[ ( intPoint + 1 ) % l ];
    	if ( this.closed || intPoint + 2 < l ) {
    		p3 = points[ ( intPoint + 2 ) % l ];
    	} else {
    		tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
    		p3 = tmp;
    	}
    	if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {
    		const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
    		let dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
    		let dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
    		let dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );
    		if ( dt1 < 1e-4 ) dt1 = 1.0;
    		if ( dt0 < 1e-4 ) dt0 = dt1;
    		if ( dt2 < 1e-4 ) dt2 = dt1;
    		px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
    		py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
    		pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );
    	} else if ( this.curveType === 'catmullrom' ) {
    		px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
    		py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
    		pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );
    	}
    	point.set(
    		px.calc( weight ),
    		py.calc( weight ),
    		pz.calc( weight )
    	);
    	return point;
    };
    CatmullRomCurve3.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.points = [];
    	for ( let i = 0, l = source.points.length; i < l; i ++ ) {
    		const point = source.points[ i ];
    		this.points.push( point.clone() );
    	}
    	this.closed = source.closed;
    	this.curveType = source.curveType;
    	this.tension = source.tension;
    	return this;
    };
    CatmullRomCurve3.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.points = [];
    	for ( let i = 0, l = this.points.length; i < l; i ++ ) {
    		const point = this.points[ i ];
    		data.points.push( point.toArray() );
    	}
    	data.closed = this.closed;
    	data.curveType = this.curveType;
    	data.tension = this.tension;
    	return data;
    };
    CatmullRomCurve3.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.points = [];
    	for ( let i = 0, l = json.points.length; i < l; i ++ ) {
    		const point = json.points[ i ];
    		this.points.push( new Vector3().fromArray( point ) );
    	}
    	this.closed = json.closed;
    	this.curveType = json.curveType;
    	this.tension = json.tension;
    	return this;
    };
    function CatmullRom( t, p0, p1, p2, p3 ) {
    	const v0 = ( p2 - p0 ) * 0.5;
    	const v1 = ( p3 - p1 ) * 0.5;
    	const t2 = t * t;
    	const t3 = t * t2;
    	return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;
    }
    function QuadraticBezierP0( t, p ) {
    	const k = 1 - t;
    	return k * k * p;
    }
    function QuadraticBezierP1( t, p ) {
    	return 2 * ( 1 - t ) * t * p;
    }
    function QuadraticBezierP2( t, p ) {
    	return t * t * p;
    }
    function QuadraticBezier( t, p0, p1, p2 ) {
    	return QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +
    		QuadraticBezierP2( t, p2 );
    }
    function CubicBezierP0( t, p ) {
    	const k = 1 - t;
    	return k * k * k * p;
    }
    function CubicBezierP1( t, p ) {
    	const k = 1 - t;
    	return 3 * k * k * t * p;
    }
    function CubicBezierP2( t, p ) {
    	return 3 * ( 1 - t ) * t * t * p;
    }
    function CubicBezierP3( t, p ) {
    	return t * t * t * p;
    }
    function CubicBezier( t, p0, p1, p2, p3 ) {
    	return CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +
    		CubicBezierP3( t, p3 );
    }
    function CubicBezierCurve( v0, v1, v2, v3 ) {
    	Curve.call( this );
    	this.type = 'CubicBezierCurve';
    	this.v0 = v0 || new Vector2();
    	this.v1 = v1 || new Vector2();
    	this.v2 = v2 || new Vector2();
    	this.v3 = v3 || new Vector2();
    }
    CubicBezierCurve.prototype = Object.create( Curve.prototype );
    CubicBezierCurve.prototype.constructor = CubicBezierCurve;
    CubicBezierCurve.prototype.isCubicBezierCurve = true;
    CubicBezierCurve.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector2();
    	const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
    	point.set(
    		CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
    		CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
    	);
    	return point;
    };
    CubicBezierCurve.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.v0.copy( source.v0 );
    	this.v1.copy( source.v1 );
    	this.v2.copy( source.v2 );
    	this.v3.copy( source.v3 );
    	return this;
    };
    CubicBezierCurve.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.v0 = this.v0.toArray();
    	data.v1 = this.v1.toArray();
    	data.v2 = this.v2.toArray();
    	data.v3 = this.v3.toArray();
    	return data;
    };
    CubicBezierCurve.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.v0.fromArray( json.v0 );
    	this.v1.fromArray( json.v1 );
    	this.v2.fromArray( json.v2 );
    	this.v3.fromArray( json.v3 );
    	return this;
    };
    function CubicBezierCurve3( v0, v1, v2, v3 ) {
    	Curve.call( this );
    	this.type = 'CubicBezierCurve3';
    	this.v0 = v0 || new Vector3();
    	this.v1 = v1 || new Vector3();
    	this.v2 = v2 || new Vector3();
    	this.v3 = v3 || new Vector3();
    }
    CubicBezierCurve3.prototype = Object.create( Curve.prototype );
    CubicBezierCurve3.prototype.constructor = CubicBezierCurve3;
    CubicBezierCurve3.prototype.isCubicBezierCurve3 = true;
    CubicBezierCurve3.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector3();
    	const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
    	point.set(
    		CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
    		CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
    		CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
    	);
    	return point;
    };
    CubicBezierCurve3.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.v0.copy( source.v0 );
    	this.v1.copy( source.v1 );
    	this.v2.copy( source.v2 );
    	this.v3.copy( source.v3 );
    	return this;
    };
    CubicBezierCurve3.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.v0 = this.v0.toArray();
    	data.v1 = this.v1.toArray();
    	data.v2 = this.v2.toArray();
    	data.v3 = this.v3.toArray();
    	return data;
    };
    CubicBezierCurve3.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.v0.fromArray( json.v0 );
    	this.v1.fromArray( json.v1 );
    	this.v2.fromArray( json.v2 );
    	this.v3.fromArray( json.v3 );
    	return this;
    };
    function LineCurve( v1, v2 ) {
    	Curve.call( this );
    	this.type = 'LineCurve';
    	this.v1 = v1 || new Vector2();
    	this.v2 = v2 || new Vector2();
    }
    LineCurve.prototype = Object.create( Curve.prototype );
    LineCurve.prototype.constructor = LineCurve;
    LineCurve.prototype.isLineCurve = true;
    LineCurve.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector2();
    	if ( t === 1 ) {
    		point.copy( this.v2 );
    	} else {
    		point.copy( this.v2 ).sub( this.v1 );
    		point.multiplyScalar( t ).add( this.v1 );
    	}
    	return point;
    };
    LineCurve.prototype.getPointAt = function ( u, optionalTarget ) {
    	return this.getPoint( u, optionalTarget );
    };
    LineCurve.prototype.getTangent = function ( t, optionalTarget ) {
    	const tangent = optionalTarget || new Vector2();
    	tangent.copy( this.v2 ).sub( this.v1 ).normalize();
    	return tangent;
    };
    LineCurve.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.v1.copy( source.v1 );
    	this.v2.copy( source.v2 );
    	return this;
    };
    LineCurve.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.v1 = this.v1.toArray();
    	data.v2 = this.v2.toArray();
    	return data;
    };
    LineCurve.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.v1.fromArray( json.v1 );
    	this.v2.fromArray( json.v2 );
    	return this;
    };
    function LineCurve3( v1, v2 ) {
    	Curve.call( this );
    	this.type = 'LineCurve3';
    	this.v1 = v1 || new Vector3();
    	this.v2 = v2 || new Vector3();
    }
    LineCurve3.prototype = Object.create( Curve.prototype );
    LineCurve3.prototype.constructor = LineCurve3;
    LineCurve3.prototype.isLineCurve3 = true;
    LineCurve3.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector3();
    	if ( t === 1 ) {
    		point.copy( this.v2 );
    	} else {
    		point.copy( this.v2 ).sub( this.v1 );
    		point.multiplyScalar( t ).add( this.v1 );
    	}
    	return point;
    };
    LineCurve3.prototype.getPointAt = function ( u, optionalTarget ) {
    	return this.getPoint( u, optionalTarget );
    };
    LineCurve3.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.v1.copy( source.v1 );
    	this.v2.copy( source.v2 );
    	return this;
    };
    LineCurve3.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.v1 = this.v1.toArray();
    	data.v2 = this.v2.toArray();
    	return data;
    };
    LineCurve3.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.v1.fromArray( json.v1 );
    	this.v2.fromArray( json.v2 );
    	return this;
    };
    function QuadraticBezierCurve( v0, v1, v2 ) {
    	Curve.call( this );
    	this.type = 'QuadraticBezierCurve';
    	this.v0 = v0 || new Vector2();
    	this.v1 = v1 || new Vector2();
    	this.v2 = v2 || new Vector2();
    }
    QuadraticBezierCurve.prototype = Object.create( Curve.prototype );
    QuadraticBezierCurve.prototype.constructor = QuadraticBezierCurve;
    QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;
    QuadraticBezierCurve.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector2();
    	const v0 = this.v0, v1 = this.v1, v2 = this.v2;
    	point.set(
    		QuadraticBezier( t, v0.x, v1.x, v2.x ),
    		QuadraticBezier( t, v0.y, v1.y, v2.y )
    	);
    	return point;
    };
    QuadraticBezierCurve.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.v0.copy( source.v0 );
    	this.v1.copy( source.v1 );
    	this.v2.copy( source.v2 );
    	return this;
    };
    QuadraticBezierCurve.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.v0 = this.v0.toArray();
    	data.v1 = this.v1.toArray();
    	data.v2 = this.v2.toArray();
    	return data;
    };
    QuadraticBezierCurve.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.v0.fromArray( json.v0 );
    	this.v1.fromArray( json.v1 );
    	this.v2.fromArray( json.v2 );
    	return this;
    };
    function QuadraticBezierCurve3( v0, v1, v2 ) {
    	Curve.call( this );
    	this.type = 'QuadraticBezierCurve3';
    	this.v0 = v0 || new Vector3();
    	this.v1 = v1 || new Vector3();
    	this.v2 = v2 || new Vector3();
    }
    QuadraticBezierCurve3.prototype = Object.create( Curve.prototype );
    QuadraticBezierCurve3.prototype.constructor = QuadraticBezierCurve3;
    QuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;
    QuadraticBezierCurve3.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector3();
    	const v0 = this.v0, v1 = this.v1, v2 = this.v2;
    	point.set(
    		QuadraticBezier( t, v0.x, v1.x, v2.x ),
    		QuadraticBezier( t, v0.y, v1.y, v2.y ),
    		QuadraticBezier( t, v0.z, v1.z, v2.z )
    	);
    	return point;
    };
    QuadraticBezierCurve3.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.v0.copy( source.v0 );
    	this.v1.copy( source.v1 );
    	this.v2.copy( source.v2 );
    	return this;
    };
    QuadraticBezierCurve3.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.v0 = this.v0.toArray();
    	data.v1 = this.v1.toArray();
    	data.v2 = this.v2.toArray();
    	return data;
    };
    QuadraticBezierCurve3.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.v0.fromArray( json.v0 );
    	this.v1.fromArray( json.v1 );
    	this.v2.fromArray( json.v2 );
    	return this;
    };
    function SplineCurve( points ) {
    	Curve.call( this );
    	this.type = 'SplineCurve';
    	this.points = points || [];
    }
    SplineCurve.prototype = Object.create( Curve.prototype );
    SplineCurve.prototype.constructor = SplineCurve;
    SplineCurve.prototype.isSplineCurve = true;
    SplineCurve.prototype.getPoint = function ( t, optionalTarget ) {
    	const point = optionalTarget || new Vector2();
    	const points = this.points;
    	const p = ( points.length - 1 ) * t;
    	const intPoint = Math.floor( p );
    	const weight = p - intPoint;
    	const p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
    	const p1 = points[ intPoint ];
    	const p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
    	const p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];
    	point.set(
    		CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
    		CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
    	);
    	return point;
    };
    SplineCurve.prototype.copy = function ( source ) {
    	Curve.prototype.copy.call( this, source );
    	this.points = [];
    	for ( let i = 0, l = source.points.length; i < l; i ++ ) {
    		const point = source.points[ i ];
    		this.points.push( point.clone() );
    	}
    	return this;
    };
    SplineCurve.prototype.toJSON = function () {
    	const data = Curve.prototype.toJSON.call( this );
    	data.points = [];
    	for ( let i = 0, l = this.points.length; i < l; i ++ ) {
    		const point = this.points[ i ];
    		data.points.push( point.toArray() );
    	}
    	return data;
    };
    SplineCurve.prototype.fromJSON = function ( json ) {
    	Curve.prototype.fromJSON.call( this, json );
    	this.points = [];
    	for ( let i = 0, l = json.points.length; i < l; i ++ ) {
    		const point = json.points[ i ];
    		this.points.push( new Vector2().fromArray( point ) );
    	}
    	return this;
    };
    var Curves = Object.freeze({
    	__proto__: null,
    	ArcCurve: ArcCurve,
    	CatmullRomCurve3: CatmullRomCurve3,
    	CubicBezierCurve: CubicBezierCurve,
    	CubicBezierCurve3: CubicBezierCurve3,
    	EllipseCurve: EllipseCurve,
    	LineCurve: LineCurve,
    	LineCurve3: LineCurve3,
    	QuadraticBezierCurve: QuadraticBezierCurve,
    	QuadraticBezierCurve3: QuadraticBezierCurve3,
    	SplineCurve: SplineCurve
    });
    function CurvePath() {
    	Curve.call( this );
    	this.type = 'CurvePath';
    	this.curves = [];
    	this.autoClose = false;
    }
    CurvePath.prototype = Object.assign( Object.create( Curve.prototype ), {
    	constructor: CurvePath,
    	add: function ( curve ) {
    		this.curves.push( curve );
    	},
    	closePath: function () {
    		const startPoint = this.curves[ 0 ].getPoint( 0 );
    		const endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );
    		if ( ! startPoint.equals( endPoint ) ) {
    			this.curves.push( new LineCurve( endPoint, startPoint ) );
    		}
    	},
    	getPoint: function ( t ) {
    		const d = t * this.getLength();
    		const curveLengths = this.getCurveLengths();
    		let i = 0;
    		while ( i < curveLengths.length ) {
    			if ( curveLengths[ i ] >= d ) {
    				const diff = curveLengths[ i ] - d;
    				const curve = this.curves[ i ];
    				const segmentLength = curve.getLength();
    				const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
    				return curve.getPointAt( u );
    			}
    			i ++;
    		}
    		return null;
    	},
    	getLength: function () {
    		const lens = this.getCurveLengths();
    		return lens[ lens.length - 1 ];
    	},
    	updateArcLengths: function () {
    		this.needsUpdate = true;
    		this.cacheLengths = null;
    		this.getCurveLengths();
    	},
    	getCurveLengths: function () {
    		if ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {
    			return this.cacheLengths;
    		}
    		const lengths = [];
    		let sums = 0;
    		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {
    			sums += this.curves[ i ].getLength();
    			lengths.push( sums );
    		}
    		this.cacheLengths = lengths;
    		return lengths;
    	},
    	getSpacedPoints: function ( divisions ) {
    		if ( divisions === undefined ) divisions = 40;
    		const points = [];
    		for ( let i = 0; i <= divisions; i ++ ) {
    			points.push( this.getPoint( i / divisions ) );
    		}
    		if ( this.autoClose ) {
    			points.push( points[ 0 ] );
    		}
    		return points;
    	},
    	getPoints: function ( divisions ) {
    		divisions = divisions || 12;
    		const points = [];
    		let last;
    		for ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {
    			const curve = curves[ i ];
    			const resolution = ( curve && curve.isEllipseCurve ) ? divisions * 2
    				: ( curve && ( curve.isLineCurve || curve.isLineCurve3 ) ) ? 1
    					: ( curve && curve.isSplineCurve ) ? divisions * curve.points.length
    						: divisions;
    			const pts = curve.getPoints( resolution );
    			for ( let j = 0; j < pts.length; j ++ ) {
    				const point = pts[ j ];
    				if ( last && last.equals( point ) ) continue;
    				points.push( point );
    				last = point;
    			}
    		}
    		if ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {
    			points.push( points[ 0 ] );
    		}
    		return points;
    	},
    	copy: function ( source ) {
    		Curve.prototype.copy.call( this, source );
    		this.curves = [];
    		for ( let i = 0, l = source.curves.length; i < l; i ++ ) {
    			const curve = source.curves[ i ];
    			this.curves.push( curve.clone() );
    		}
    		this.autoClose = source.autoClose;
    		return this;
    	},
    	toJSON: function () {
    		const data = Curve.prototype.toJSON.call( this );
    		data.autoClose = this.autoClose;
    		data.curves = [];
    		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {
    			const curve = this.curves[ i ];
    			data.curves.push( curve.toJSON() );
    		}
    		return data;
    	},
    	fromJSON: function ( json ) {
    		Curve.prototype.fromJSON.call( this, json );
    		this.autoClose = json.autoClose;
    		this.curves = [];
    		for ( let i = 0, l = json.curves.length; i < l; i ++ ) {
    			const curve = json.curves[ i ];
    			this.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );
    		}
    		return this;
    	}
    } );
    function Path( points ) {
    	CurvePath.call( this );
    	this.type = 'Path';
    	this.currentPoint = new Vector2();
    	if ( points ) {
    		this.setFromPoints( points );
    	}
    }
    Path.prototype = Object.assign( Object.create( CurvePath.prototype ), {
    	constructor: Path,
    	setFromPoints: function ( points ) {
    		this.moveTo( points[ 0 ].x, points[ 0 ].y );
    		for ( let i = 1, l = points.length; i < l; i ++ ) {
    			this.lineTo( points[ i ].x, points[ i ].y );
    		}
    		return this;
    	},
    	moveTo: function ( x, y ) {
    		this.currentPoint.set( x, y );
    		return this;
    	},
    	lineTo: function ( x, y ) {
    		const curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );
    		this.curves.push( curve );
    		this.currentPoint.set( x, y );
    		return this;
    	},
    	quadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {
    		const curve = new QuadraticBezierCurve(
    			this.currentPoint.clone(),
    			new Vector2( aCPx, aCPy ),
    			new Vector2( aX, aY )
    		);
    		this.curves.push( curve );
    		this.currentPoint.set( aX, aY );
    		return this;
    	},
    	bezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
    		const curve = new CubicBezierCurve(
    			this.currentPoint.clone(),
    			new Vector2( aCP1x, aCP1y ),
    			new Vector2( aCP2x, aCP2y ),
    			new Vector2( aX, aY )
    		);
    		this.curves.push( curve );
    		this.currentPoint.set( aX, aY );
    		return this;
    	},
    	splineThru: function ( pts  ) {
    		const npts = [ this.currentPoint.clone() ].concat( pts );
    		const curve = new SplineCurve( npts );
    		this.curves.push( curve );
    		this.currentPoint.copy( pts[ pts.length - 1 ] );
    		return this;
    	},
    	arc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
    		const x0 = this.currentPoint.x;
    		const y0 = this.currentPoint.y;
    		this.absarc( aX + x0, aY + y0, aRadius,
    			aStartAngle, aEndAngle, aClockwise );
    		return this;
    	},
    	absarc: function ( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
    		this.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
    		return this;
    	},
    	ellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
    		const x0 = this.currentPoint.x;
    		const y0 = this.currentPoint.y;
    		this.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
    		return this;
    	},
    	absellipse: function ( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
    		const curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
    		if ( this.curves.length > 0 ) {
    			const firstPoint = curve.getPoint( 0 );
    			if ( ! firstPoint.equals( this.currentPoint ) ) {
    				this.lineTo( firstPoint.x, firstPoint.y );
    			}
    		}
    		this.curves.push( curve );
    		const lastPoint = curve.getPoint( 1 );
    		this.currentPoint.copy( lastPoint );
    		return this;
    	},
    	copy: function ( source ) {
    		CurvePath.prototype.copy.call( this, source );
    		this.currentPoint.copy( source.currentPoint );
    		return this;
    	},
    	toJSON: function () {
    		const data = CurvePath.prototype.toJSON.call( this );
    		data.currentPoint = this.currentPoint.toArray();
    		return data;
    	},
    	fromJSON: function ( json ) {
    		CurvePath.prototype.fromJSON.call( this, json );
    		this.currentPoint.fromArray( json.currentPoint );
    		return this;
    	}
    } );
    function Shape( points ) {
    	Path.call( this, points );
    	this.uuid = MathUtils.generateUUID();
    	this.type = 'Shape';
    	this.holes = [];
    }
    Shape.prototype = Object.assign( Object.create( Path.prototype ), {
    	constructor: Shape,
    	getPointsHoles: function ( divisions ) {
    		const holesPts = [];
    		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {
    			holesPts[ i ] = this.holes[ i ].getPoints( divisions );
    		}
    		return holesPts;
    	},
    	extractPoints: function ( divisions ) {
    		return {
    			shape: this.getPoints( divisions ),
    			holes: this.getPointsHoles( divisions )
    		};
    	},
    	copy: function ( source ) {
    		Path.prototype.copy.call( this, source );
    		this.holes = [];
    		for ( let i = 0, l = source.holes.length; i < l; i ++ ) {
    			const hole = source.holes[ i ];
    			this.holes.push( hole.clone() );
    		}
    		return this;
    	},
    	toJSON: function () {
    		const data = Path.prototype.toJSON.call( this );
    		data.uuid = this.uuid;
    		data.holes = [];
    		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {
    			const hole = this.holes[ i ];
    			data.holes.push( hole.toJSON() );
    		}
    		return data;
    	},
    	fromJSON: function ( json ) {
    		Path.prototype.fromJSON.call( this, json );
    		this.uuid = json.uuid;
    		this.holes = [];
    		for ( let i = 0, l = json.holes.length; i < l; i ++ ) {
    			const hole = json.holes[ i ];
    			this.holes.push( new Path().fromJSON( hole ) );
    		}
    		return this;
    	}
    } );
    function Light( color, intensity ) {
    	Object3D.call( this );
    	this.type = 'Light';
    	this.color = new Color( color );
    	this.intensity = intensity !== undefined ? intensity : 1;
    	this.receiveShadow = undefined;
    }
    Light.prototype = Object.assign( Object.create( Object3D.prototype ), {
    	constructor: Light,
    	isLight: true,
    	copy: function ( source ) {
    		Object3D.prototype.copy.call( this, source );
    		this.color.copy( source.color );
    		this.intensity = source.intensity;
    		return this;
    	},
    	toJSON: function ( meta ) {
    		const data = Object3D.prototype.toJSON.call( this, meta );
    		data.object.color = this.color.getHex();
    		data.object.intensity = this.intensity;
    		if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();
    		if ( this.distance !== undefined ) data.object.distance = this.distance;
    		if ( this.angle !== undefined ) data.object.angle = this.angle;
    		if ( this.decay !== undefined ) data.object.decay = this.decay;
    		if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;
    		if ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();
    		return data;
    	}
    } );
    function HemisphereLight( skyColor, groundColor, intensity ) {
    	Light.call( this, skyColor, intensity );
    	this.type = 'HemisphereLight';
    	this.castShadow = undefined;
    	this.position.copy( Object3D.DefaultUp );
    	this.updateMatrix();
    	this.groundColor = new Color( groundColor );
    }
    HemisphereLight.prototype = Object.assign( Object.create( Light.prototype ), {
    	constructor: HemisphereLight,
    	isHemisphereLight: true,
    	copy: function ( source ) {
    		Light.prototype.copy.call( this, source );
    		this.groundColor.copy( source.groundColor );
    		return this;
    	}
    } );
    function LightShadow( camera ) {
    	this.camera = camera;
    	this.bias = 0;
    	this.normalBias = 0;
    	this.radius = 1;
    	this.mapSize = new Vector2( 512, 512 );
    	this.map = null;
    	this.mapPass = null;
    	this.matrix = new Matrix4();
    	this.autoUpdate = true;
    	this.needsUpdate = false;
    	this._frustum = new Frustum();
    	this._frameExtents = new Vector2( 1, 1 );
    	this._viewportCount = 1;
    	this._viewports = [
    		new Vector4( 0, 0, 1, 1 )
    	];
    }
    Object.assign( LightShadow.prototype, {
    	_projScreenMatrix: new Matrix4(),
    	_lightPositionWorld: new Vector3(),
    	_lookTarget: new Vector3(),
    	getViewportCount: function () {
    		return this._viewportCount;
    	},
    	getFrustum: function () {
    		return this._frustum;
    	},
    	updateMatrices: function ( light ) {
    		const shadowCamera = this.camera,
    			shadowMatrix = this.matrix,
    			projScreenMatrix = this._projScreenMatrix,
    			lookTarget = this._lookTarget,
    			lightPositionWorld = this._lightPositionWorld;
    		lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
    		shadowCamera.position.copy( lightPositionWorld );
    		lookTarget.setFromMatrixPosition( light.target.matrixWorld );
    		shadowCamera.lookAt( lookTarget );
    		shadowCamera.updateMatrixWorld();
    		projScreenMatrix.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );
    		this._frustum.setFromProjectionMatrix( projScreenMatrix );
    		shadowMatrix.set(
    			0.5, 0.0, 0.0, 0.5,
    			0.0, 0.5, 0.0, 0.5,
    			0.0, 0.0, 0.5, 0.5,
    			0.0, 0.0, 0.0, 1.0
    		);
    		shadowMatrix.multiply( shadowCamera.projectionMatrix );
    		shadowMatrix.multiply( shadowCamera.matrixWorldInverse );
    	},
    	getViewport: function ( viewportIndex ) {
    		return this._viewports[ viewportIndex ];
    	},
    	getFrameExtents: function () {
    		return this._frameExtents;
    	},
    	copy: function ( source ) {
    		this.camera = source.camera.clone();
    		this.bias = source.bias;
    		this.radius = source.radius;
    		this.mapSize.copy( source.mapSize );
    		return this;
    	},
    	clone: function () {
    		return new this.constructor().copy( this );
    	},
    	toJSON: function () {
    		const object = {};
    		if ( this.bias !== 0 ) object.bias = this.bias;
    		if ( this.normalBias !== 0 ) object.normalBias = this.normalBias;
    		if ( this.radius !== 1 ) object.radius = this.radius;
    		if ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();
    		object.camera = this.camera.toJSON( false ).object;
    		delete object.camera.matrix;
    		return object;
    	}
    } );
    function SpotLightShadow() {
    	LightShadow.call( this, new PerspectiveCamera( 50, 1, 0.5, 500 ) );
    }
    SpotLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
    	constructor: SpotLightShadow,
    	isSpotLightShadow: true,
    	updateMatrices: function ( light ) {
    		const camera = this.camera;
    		const fov = MathUtils.RAD2DEG * 2 * light.angle;
    		const aspect = this.mapSize.width / this.mapSize.height;
    		const far = light.distance || camera.far;
    		if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {
    			camera.fov = fov;
    			camera.aspect = aspect;
    			camera.far = far;
    			camera.updateProjectionMatrix();
    		}
    		LightShadow.prototype.updateMatrices.call( this, light );
    	}
    } );
    function SpotLight( color, intensity, distance, angle, penumbra, decay ) {
    	Light.call( this, color, intensity );
    	this.type = 'SpotLight';
    	this.position.copy( Object3D.DefaultUp );
    	this.updateMatrix();
    	this.target = new Object3D();
    	Object.defineProperty( this, 'power', {
    		get: function () {
    			return this.intensity * Math.PI;
    		},
    		set: function ( power ) {
    			this.intensity = power / Math.PI;
    		}
    	} );
    	this.distance = ( distance !== undefined ) ? distance : 0;
    	this.angle = ( angle !== undefined ) ? angle : Math.PI / 3;
    	this.penumbra = ( penumbra !== undefined ) ? penumbra : 0;
    	this.decay = ( decay !== undefined ) ? decay : 1;
    	this.shadow = new SpotLightShadow();
    }
    SpotLight.prototype = Object.assign( Object.create( Light.prototype ), {
    	constructor: SpotLight,
    	isSpotLight: true,
    	copy: function ( source ) {
    		Light.prototype.copy.call( this, source );
    		this.distance = source.distance;
    		this.angle = source.angle;
    		this.penumbra = source.penumbra;
    		this.decay = source.decay;
    		this.target = source.target.clone();
    		this.shadow = source.shadow.clone();
    		return this;
    	}
    } );
    function PointLightShadow() {
    	LightShadow.call( this, new PerspectiveCamera( 90, 1, 0.5, 500 ) );
    	this._frameExtents = new Vector2( 4, 2 );
    	this._viewportCount = 6;
    	this._viewports = [
    		new Vector4( 2, 1, 1, 1 ),
    		new Vector4( 0, 1, 1, 1 ),
    		new Vector4( 3, 1, 1, 1 ),
    		new Vector4( 1, 1, 1, 1 ),
    		new Vector4( 3, 0, 1, 1 ),
    		new Vector4( 1, 0, 1, 1 )
    	];
    	this._cubeDirections = [
    		new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
    		new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
    	];
    	this._cubeUps = [
    		new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),
    		new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),	new Vector3( 0, 0, - 1 )
    	];
    }
    PointLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
    	constructor: PointLightShadow,
    	isPointLightShadow: true,
    	updateMatrices: function ( light, viewportIndex ) {
    		if ( viewportIndex === undefined ) viewportIndex = 0;
    		const camera = this.camera,
    			shadowMatrix = this.matrix,
    			lightPositionWorld = this._lightPositionWorld,
    			lookTarget = this._lookTarget,
    			projScreenMatrix = this._projScreenMatrix;
    		lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
    		camera.position.copy( lightPositionWorld );
    		lookTarget.copy( camera.position );
    		lookTarget.add( this._cubeDirections[ viewportIndex ] );
    		camera.up.copy( this._cubeUps[ viewportIndex ] );
    		camera.lookAt( lookTarget );
    		camera.updateMatrixWorld();
    		shadowMatrix.makeTranslation( - lightPositionWorld.x, - lightPositionWorld.y, - lightPositionWorld.z );
    		projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
    		this._frustum.setFromProjectionMatrix( projScreenMatrix );
    	}
    } );
    function PointLight( color, intensity, distance, decay ) {
    	Light.call( this, color, intensity );
    	this.type = 'PointLight';
    	Object.defineProperty( this, 'power', {
    		get: function () {
    			return this.intensity * 4 * Math.PI;
    		},
    		set: function ( power ) {
    			this.intensity = power / ( 4 * Math.PI );
    		}
    	} );
    	this.distance = ( distance !== undefined ) ? distance : 0;
    	this.decay = ( decay !== undefined ) ? decay : 1;
    	this.shadow = new PointLightShadow();
    }
    PointLight.prototype = Object.assign( Object.create( Light.prototype ), {
    	constructor: PointLight,
    	isPointLight: true,
    	copy: function ( source ) {
    		Light.prototype.copy.call( this, source );
    		this.distance = source.distance;
    		this.decay = source.decay;
    		this.shadow = source.shadow.clone();
    		return this;
    	}
    } );
    function OrthographicCamera( left, right, top, bottom, near, far ) {
    	Camera.call( this );
    	this.type = 'OrthographicCamera';
    	this.zoom = 1;
    	this.view = null;
    	this.left = ( left !== undefined ) ? left : - 1;
    	this.right = ( right !== undefined ) ? right : 1;
    	this.top = ( top !== undefined ) ? top : 1;
    	this.bottom = ( bottom !== undefined ) ? bottom : - 1;
    	this.near = ( near !== undefined ) ? near : 0.1;
    	this.far = ( far !== undefined ) ? far : 2000;
    	this.updateProjectionMatrix();
    }
    OrthographicCamera.prototype = Object.assign( Object.create( Camera.prototype ), {
    	constructor: OrthographicCamera,
    	isOrthographicCamera: true,
    	copy: function ( source, recursive ) {
    		Camera.prototype.copy.call( this, source, recursive );
    		this.left = source.left;
    		this.right = source.right;
    		this.top = source.top;
    		this.bottom = source.bottom;
    		this.near = source.near;
    		this.far = source.far;
    		this.zoom = source.zoom;
    		this.view = source.view === null ? null : Object.assign( {}, source.view );
    		return this;
    	},
    	setViewOffset: function ( fullWidth, fullHeight, x, y, width, height ) {
    		if ( this.view === null ) {
    			this.view = {
    				enabled: true,
    				fullWidth: 1,
    				fullHeight: 1,
    				offsetX: 0,
    				offsetY: 0,
    				width: 1,
    				height: 1
    			};
    		}
    		this.view.enabled = true;
    		this.view.fullWidth = fullWidth;
    		this.view.fullHeight = fullHeight;
    		this.view.offsetX = x;
    		this.view.offsetY = y;
    		this.view.width = width;
    		this.view.height = height;
    		this.updateProjectionMatrix();
    	},
    	clearViewOffset: function () {
    		if ( this.view !== null ) {
    			this.view.enabled = false;
    		}
    		this.updateProjectionMatrix();
    	},
    	updateProjectionMatrix: function () {
    		const dx = ( this.right - this.left ) / ( 2 * this.zoom );
    		const dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
    		const cx = ( this.right + this.left ) / 2;
    		const cy = ( this.top + this.bottom ) / 2;
    		let left = cx - dx;
    		let right = cx + dx;
    		let top = cy + dy;
    		let bottom = cy - dy;
    		if ( this.view !== null && this.view.enabled ) {
    			const scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;
    			const scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;
    			left += scaleW * this.view.offsetX;
    			right = left + scaleW * this.view.width;
    			top -= scaleH * this.view.offsetY;
    			bottom = top - scaleH * this.view.height;
    		}
    		this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far );
    		this.projectionMatrixInverse.getInverse( this.projectionMatrix );
    	},
    	toJSON: function ( meta ) {
    		const data = Object3D.prototype.toJSON.call( this, meta );
    		data.object.zoom = this.zoom;
    		data.object.left = this.left;
    		data.object.right = this.right;
    		data.object.top = this.top;
    		data.object.bottom = this.bottom;
    		data.object.near = this.near;
    		data.object.far = this.far;
    		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
    		return data;
    	}
    } );
    function DirectionalLightShadow() {
    	LightShadow.call( this, new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );
    }
    DirectionalLightShadow.prototype = Object.assign( Object.create( LightShadow.prototype ), {
    	constructor: DirectionalLightShadow,
    	isDirectionalLightShadow: true,
    	updateMatrices: function ( light ) {
    		LightShadow.prototype.updateMatrices.call( this, light );
    	}
    } );
    function DirectionalLight( color, intensity ) {
    	Light.call( this, color, intensity );
    	this.type = 'DirectionalLight';
    	this.position.copy( Object3D.DefaultUp );
    	this.updateMatrix();
    	this.target = new Object3D();
    	this.shadow = new DirectionalLightShadow();
    }
    DirectionalLight.prototype = Object.assign( Object.create( Light.prototype ), {
    	constructor: DirectionalLight,
    	isDirectionalLight: true,
    	copy: function ( source ) {
    		Light.prototype.copy.call( this, source );
    		this.target = source.target.clone();
    		this.shadow = source.shadow.clone();
    		return this;
    	}
    } );
    function AmbientLight( color, intensity ) {
    	Light.call( this, color, intensity );
    	this.type = 'AmbientLight';
    	this.castShadow = undefined;
    }
    AmbientLight.prototype = Object.assign( Object.create( Light.prototype ), {
    	constructor: AmbientLight,
    	isAmbientLight: true
    } );
    function RectAreaLight( color, intensity, width, height ) {
    	Light.call( this, color, intensity );
    	this.type = 'RectAreaLight';
    	this.width = ( width !== undefined ) ? width : 10;
    	this.height = ( height !== undefined ) ? height : 10;
    }
    RectAreaLight.prototype = Object.assign( Object.create( Light.prototype ), {
    	constructor: RectAreaLight,
    	isRectAreaLight: true,
    	copy: function ( source ) {
    		Light.prototype.copy.call( this, source );
    		this.width = source.width;
    		this.height = source.height;
    		return this;
    	},
    	toJSON: function ( meta ) {
    		const data = Light.prototype.toJSON.call( this, meta );
    		data.object.width = this.width;
    		data.object.height = this.height;
    		return data;
    	}
    } );
    class SphericalHarmonics3 {
    	constructor() {
    		Object.defineProperty( this, 'isSphericalHarmonics3', { value: true } );
    		this.coefficients = [];
    		for ( let i = 0; i < 9; i ++ ) {
    			this.coefficients.push( new Vector3() );
    		}
    	}
    	set( coefficients ) {
    		for ( let i = 0; i < 9; i ++ ) {
    			this.coefficients[ i ].copy( coefficients[ i ] );
    		}
    		return this;
    	}
    	zero() {
    		for ( let i = 0; i < 9; i ++ ) {
    			this.coefficients[ i ].set( 0, 0, 0 );
    		}
    		return this;
    	}
    	getAt( normal, target ) {
    		const x = normal.x, y = normal.y, z = normal.z;
    		const coeff = this.coefficients;
    		target.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );
    		target.addScaledVector( coeff[ 1 ], 0.488603 * y );
    		target.addScaledVector( coeff[ 2 ], 0.488603 * z );
    		target.addScaledVector( coeff[ 3 ], 0.488603 * x );
    		target.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );
    		target.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );
    		target.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );
    		target.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );
    		target.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );
    		return target;
    	}
    	getIrradianceAt( normal, target ) {
    		const x = normal.x, y = normal.y, z = normal.z;
    		const coeff = this.coefficients;
    		target.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 );
    		target.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y );
    		target.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );
    		target.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );
    		target.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y );
    		target.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );
    		target.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 );
    		target.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );
    		target.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) );
    		return target;
    	}
    	add( sh ) {
    		for ( let i = 0; i < 9; i ++ ) {
    			this.coefficients[ i ].add( sh.coefficients[ i ] );
    		}
    		return this;
    	}
    	addScaledSH( sh, s ) {
    		for ( let i = 0; i < 9; i ++ ) {
    			this.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );
    		}
    		return this;
    	}
    	scale( s ) {
    		for ( let i = 0; i < 9; i ++ ) {
    			this.coefficients[ i ].multiplyScalar( s );
    		}
    		return this;
    	}
    	lerp( sh, alpha ) {
    		for ( let i = 0; i < 9; i ++ ) {
    			this.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );
    		}
    		return this;
    	}
    	equals( sh ) {
    		for ( let i = 0; i < 9; i ++ ) {
    			if ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {
    				return false;
    			}
    		}
    		return true;
    	}
    	copy( sh ) {
    		return this.set( sh.coefficients );
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	fromArray( array, offset ) {
    		if ( offset === undefined ) offset = 0;
    		const coefficients = this.coefficients;
    		for ( let i = 0; i < 9; i ++ ) {
    			coefficients[ i ].fromArray( array, offset + ( i * 3 ) );
    		}
    		return this;
    	}
    	toArray( array, offset ) {
    		if ( array === undefined ) array = [];
    		if ( offset === undefined ) offset = 0;
    		const coefficients = this.coefficients;
    		for ( let i = 0; i < 9; i ++ ) {
    			coefficients[ i ].toArray( array, offset + ( i * 3 ) );
    		}
    		return array;
    	}
    	static getBasisAt( normal, shBasis ) {
    		const x = normal.x, y = normal.y, z = normal.z;
    		shBasis[ 0 ] = 0.282095;
    		shBasis[ 1 ] = 0.488603 * y;
    		shBasis[ 2 ] = 0.488603 * z;
    		shBasis[ 3 ] = 0.488603 * x;
    		shBasis[ 4 ] = 1.092548 * x * y;
    		shBasis[ 5 ] = 1.092548 * y * z;
    		shBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );
    		shBasis[ 7 ] = 1.092548 * x * z;
    		shBasis[ 8 ] = 0.546274 * ( x * x - y * y );
    	}
    }
    function LightProbe( sh, intensity ) {
    	Light.call( this, undefined, intensity );
    	this.type = 'LightProbe';
    	this.sh = ( sh !== undefined ) ? sh : new SphericalHarmonics3();
    }
    LightProbe.prototype = Object.assign( Object.create( Light.prototype ), {
    	constructor: LightProbe,
    	isLightProbe: true,
    	copy: function ( source ) {
    		Light.prototype.copy.call( this, source );
    		this.sh.copy( source.sh );
    		return this;
    	},
    	fromJSON: function ( json ) {
    		this.intensity = json.intensity;
    		this.sh.fromArray( json.sh );
    		return this;
    	},
    	toJSON: function ( meta ) {
    		const data = Light.prototype.toJSON.call( this, meta );
    		data.object.sh = this.sh.toArray();
    		return data;
    	}
    } );
    function MaterialLoader( manager ) {
    	Loader.call( this, manager );
    	this.textures = {};
    }
    MaterialLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: MaterialLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const loader = new FileLoader( scope.manager );
    		loader.setPath( scope.path );
    		loader.setRequestHeader( scope.requestHeader );
    		loader.load( url, function ( text ) {
    			try {
    				onLoad( scope.parse( JSON.parse( text ) ) );
    			} catch ( e ) {
    				if ( onError ) {
    					onError( e );
    				} else {
    					console.error( e );
    				}
    				scope.manager.itemError( url );
    			}
    		}, onProgress, onError );
    	},
    	parse: function ( json ) {
    		const textures = this.textures;
    		function getTexture( name ) {
    			if ( textures[ name ] === undefined ) {
    				console.warn( 'THREE.MaterialLoader: Undefined texture', name );
    			}
    			return textures[ name ];
    		}
    		const material = new Materials[ json.type ]();
    		if ( json.uuid !== undefined ) material.uuid = json.uuid;
    		if ( json.name !== undefined ) material.name = json.name;
    		if ( json.color !== undefined ) material.color.setHex( json.color );
    		if ( json.roughness !== undefined ) material.roughness = json.roughness;
    		if ( json.metalness !== undefined ) material.metalness = json.metalness;
    		if ( json.sheen !== undefined ) material.sheen = new Color().setHex( json.sheen );
    		if ( json.emissive !== undefined ) material.emissive.setHex( json.emissive );
    		if ( json.specular !== undefined ) material.specular.setHex( json.specular );
    		if ( json.shininess !== undefined ) material.shininess = json.shininess;
    		if ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;
    		if ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;
    		if ( json.fog !== undefined ) material.fog = json.fog;
    		if ( json.flatShading !== undefined ) material.flatShading = json.flatShading;
    		if ( json.blending !== undefined ) material.blending = json.blending;
    		if ( json.combine !== undefined ) material.combine = json.combine;
    		if ( json.side !== undefined ) material.side = json.side;
    		if ( json.opacity !== undefined ) material.opacity = json.opacity;
    		if ( json.transparent !== undefined ) material.transparent = json.transparent;
    		if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
    		if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
    		if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
    		if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;
    		if ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;
    		if ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;
    		if ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;
    		if ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;
    		if ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;
    		if ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;
    		if ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;
    		if ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;
    		if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
    		if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;
    		if ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;
    		if ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;
    		if ( json.rotation !== undefined ) material.rotation = json.rotation;
    		if ( json.linewidth !== 1 ) material.linewidth = json.linewidth;
    		if ( json.dashSize !== undefined ) material.dashSize = json.dashSize;
    		if ( json.gapSize !== undefined ) material.gapSize = json.gapSize;
    		if ( json.scale !== undefined ) material.scale = json.scale;
    		if ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;
    		if ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;
    		if ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;
    		if ( json.skinning !== undefined ) material.skinning = json.skinning;
    		if ( json.morphTargets !== undefined ) material.morphTargets = json.morphTargets;
    		if ( json.morphNormals !== undefined ) material.morphNormals = json.morphNormals;
    		if ( json.dithering !== undefined ) material.dithering = json.dithering;
    		if ( json.vertexTangents !== undefined ) material.vertexTangents = json.vertexTangents;
    		if ( json.visible !== undefined ) material.visible = json.visible;
    		if ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;
    		if ( json.userData !== undefined ) material.userData = json.userData;
    		if ( json.vertexColors !== undefined ) {
    			if ( typeof json.vertexColors === 'number' ) {
    				material.vertexColors = ( json.vertexColors > 0 ) ? true : false;
    			} else {
    				material.vertexColors = json.vertexColors;
    			}
    		}
    		if ( json.uniforms !== undefined ) {
    			for ( const name in json.uniforms ) {
    				const uniform = json.uniforms[ name ];
    				material.uniforms[ name ] = {};
    				switch ( uniform.type ) {
    					case 't':
    						material.uniforms[ name ].value = getTexture( uniform.value );
    						break;
    					case 'c':
    						material.uniforms[ name ].value = new Color().setHex( uniform.value );
    						break;
    					case 'v2':
    						material.uniforms[ name ].value = new Vector2().fromArray( uniform.value );
    						break;
    					case 'v3':
    						material.uniforms[ name ].value = new Vector3().fromArray( uniform.value );
    						break;
    					case 'v4':
    						material.uniforms[ name ].value = new Vector4().fromArray( uniform.value );
    						break;
    					case 'm3':
    						material.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );
    						break;
    					case 'm4':
    						material.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );
    						break;
    					default:
    						material.uniforms[ name ].value = uniform.value;
    				}
    			}
    		}
    		if ( json.defines !== undefined ) material.defines = json.defines;
    		if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
    		if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;
    		if ( json.extensions !== undefined ) {
    			for ( const key in json.extensions ) {
    				material.extensions[ key ] = json.extensions[ key ];
    			}
    		}
    		if ( json.shading !== undefined ) material.flatShading = json.shading === 1;
    		if ( json.size !== undefined ) material.size = json.size;
    		if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;
    		if ( json.map !== undefined ) material.map = getTexture( json.map );
    		if ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );
    		if ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );
    		if ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );
    		if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;
    		if ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );
    		if ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;
    		if ( json.normalScale !== undefined ) {
    			let normalScale = json.normalScale;
    			if ( Array.isArray( normalScale ) === false ) {
    				normalScale = [ normalScale, normalScale ];
    			}
    			material.normalScale = new Vector2().fromArray( normalScale );
    		}
    		if ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );
    		if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
    		if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;
    		if ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );
    		if ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );
    		if ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );
    		if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;
    		if ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );
    		if ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );
    		if ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;
    		if ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;
    		if ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;
    		if ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );
    		if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;
    		if ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );
    		if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;
    		if ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );
    		if ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );
    		if ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );
    		if ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );
    		if ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );
    		if ( json.transmission !== undefined ) material.transmission = json.transmission;
    		if ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );
    		return material;
    	},
    	setTextures: function ( value ) {
    		this.textures = value;
    		return this;
    	}
    } );
    const LoaderUtils = {
    	decodeText: function ( array ) {
    		if ( typeof TextDecoder !== 'undefined' ) {
    			return new TextDecoder().decode( array );
    		}
    		let s = '';
    		for ( let i = 0, il = array.length; i < il; i ++ ) {
    			s += String.fromCharCode( array[ i ] );
    		}
    		try {
    			return decodeURIComponent( escape( s ) );
    		} catch ( e ) {
    			return s;
    		}
    	},
    	extractUrlBase: function ( url ) {
    		const index = url.lastIndexOf( '/' );
    		if ( index === - 1 ) return './';
    		return url.substr( 0, index + 1 );
    	}
    };
    function InstancedBufferGeometry() {
    	BufferGeometry.call( this );
    	this.type = 'InstancedBufferGeometry';
    	this.instanceCount = Infinity;
    }
    InstancedBufferGeometry.prototype = Object.assign( Object.create( BufferGeometry.prototype ), {
    	constructor: InstancedBufferGeometry,
    	isInstancedBufferGeometry: true,
    	copy: function ( source ) {
    		BufferGeometry.prototype.copy.call( this, source );
    		this.instanceCount = source.instanceCount;
    		return this;
    	},
    	clone: function () {
    		return new this.constructor().copy( this );
    	},
    	toJSON: function () {
    		const data = BufferGeometry.prototype.toJSON.call( this );
    		data.instanceCount = this.instanceCount;
    		data.isInstancedBufferGeometry = true;
    		return data;
    	}
    } );
    function InstancedBufferAttribute( array, itemSize, normalized, meshPerAttribute ) {
    	if ( typeof ( normalized ) === 'number' ) {
    		meshPerAttribute = normalized;
    		normalized = false;
    		console.error( 'THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.' );
    	}
    	BufferAttribute.call( this, array, itemSize, normalized );
    	this.meshPerAttribute = meshPerAttribute || 1;
    }
    InstancedBufferAttribute.prototype = Object.assign( Object.create( BufferAttribute.prototype ), {
    	constructor: InstancedBufferAttribute,
    	isInstancedBufferAttribute: true,
    	copy: function ( source ) {
    		BufferAttribute.prototype.copy.call( this, source );
    		this.meshPerAttribute = source.meshPerAttribute;
    		return this;
    	},
    	toJSON: function ()	{
    		const data = BufferAttribute.prototype.toJSON.call( this );
    		data.meshPerAttribute = this.meshPerAttribute;
    		data.isInstancedBufferAttribute = true;
    		return data;
    	}
    } );
    function BufferGeometryLoader( manager ) {
    	Loader.call( this, manager );
    }
    BufferGeometryLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: BufferGeometryLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const loader = new FileLoader( scope.manager );
    		loader.setPath( scope.path );
    		loader.setRequestHeader( scope.requestHeader );
    		loader.load( url, function ( text ) {
    			try {
    				onLoad( scope.parse( JSON.parse( text ) ) );
    			} catch ( e ) {
    				if ( onError ) {
    					onError( e );
    				} else {
    					console.error( e );
    				}
    				scope.manager.itemError( url );
    			}
    		}, onProgress, onError );
    	},
    	parse: function ( json ) {
    		const interleavedBufferMap = {};
    		const arrayBufferMap = {};
    		function getInterleavedBuffer( json, uuid ) {
    			if ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];
    			const interleavedBuffers = json.interleavedBuffers;
    			const interleavedBuffer = interleavedBuffers[ uuid ];
    			const buffer = getArrayBuffer( json, interleavedBuffer.buffer );
    			const array = new TYPED_ARRAYS[ interleavedBuffer.type ]( buffer );
    			const ib = new InterleavedBuffer( array, interleavedBuffer.stride );
    			ib.uuid = interleavedBuffer.uuid;
    			interleavedBufferMap[ uuid ] = ib;
    			return ib;
    		}
    		function getArrayBuffer( json, uuid ) {
    			if ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];
    			const arrayBuffers = json.arrayBuffers;
    			const arrayBuffer = arrayBuffers[ uuid ];
    			const ab = new Uint32Array( arrayBuffer ).buffer;
    			arrayBufferMap[ uuid ] = ab;
    			return ab;
    		}
    		const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();
    		const index = json.data.index;
    		if ( index !== undefined ) {
    			const typedArray = new TYPED_ARRAYS[ index.type ]( index.array );
    			geometry.setIndex( new BufferAttribute( typedArray, 1 ) );
    		}
    		const attributes = json.data.attributes;
    		for ( const key in attributes ) {
    			const attribute = attributes[ key ];
    			let bufferAttribute;
    			if ( attribute.isInterleavedBufferAttribute ) {
    				const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
    				bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );
    			} else {
    				const typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array );
    				const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
    				bufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );
    			}
    			if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
    			geometry.setAttribute( key, bufferAttribute );
    		}
    		const morphAttributes = json.data.morphAttributes;
    		if ( morphAttributes ) {
    			for ( const key in morphAttributes ) {
    				const attributeArray = morphAttributes[ key ];
    				const array = [];
    				for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {
    					const attribute = attributeArray[ i ];
    					let bufferAttribute;
    					if ( attribute.isInterleavedBufferAttribute ) {
    						const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
    						bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );
    					} else {
    						const typedArray = new TYPED_ARRAYS[ attribute.type ]( attribute.array );
    						bufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );
    					}
    					if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
    					array.push( bufferAttribute );
    				}
    				geometry.morphAttributes[ key ] = array;
    			}
    		}
    		const morphTargetsRelative = json.data.morphTargetsRelative;
    		if ( morphTargetsRelative ) {
    			geometry.morphTargetsRelative = true;
    		}
    		const groups = json.data.groups || json.data.drawcalls || json.data.offsets;
    		if ( groups !== undefined ) {
    			for ( let i = 0, n = groups.length; i !== n; ++ i ) {
    				const group = groups[ i ];
    				geometry.addGroup( group.start, group.count, group.materialIndex );
    			}
    		}
    		const boundingSphere = json.data.boundingSphere;
    		if ( boundingSphere !== undefined ) {
    			const center = new Vector3();
    			if ( boundingSphere.center !== undefined ) {
    				center.fromArray( boundingSphere.center );
    			}
    			geometry.boundingSphere = new Sphere( center, boundingSphere.radius );
    		}
    		if ( json.name ) geometry.name = json.name;
    		if ( json.userData ) geometry.userData = json.userData;
    		return geometry;
    	}
    } );
    const TYPED_ARRAYS = {
    	Int8Array: Int8Array,
    	Uint8Array: Uint8Array,
    	Uint8ClampedArray: typeof Uint8ClampedArray !== 'undefined' ? Uint8ClampedArray : Uint8Array,
    	Int16Array: Int16Array,
    	Uint16Array: Uint16Array,
    	Int32Array: Int32Array,
    	Uint32Array: Uint32Array,
    	Float32Array: Float32Array,
    	Float64Array: Float64Array
    };
    function ObjectLoader( manager ) {
    	Loader.call( this, manager );
    }
    ObjectLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: ObjectLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
    		this.resourcePath = this.resourcePath || path;
    		const loader = new FileLoader( scope.manager );
    		loader.setPath( this.path );
    		loader.setRequestHeader( this.requestHeader );
    		loader.load( url, function ( text ) {
    			let json = null;
    			try {
    				json = JSON.parse( text );
    			} catch ( error ) {
    				if ( onError !== undefined ) onError( error );
    				console.error( 'THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message );
    				return;
    			}
    			const metadata = json.metadata;
    			if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {
    				console.error( 'THREE.ObjectLoader: Can\'t load ' + url );
    				return;
    			}
    			scope.parse( json, onLoad );
    		}, onProgress, onError );
    	},
    	parse: function ( json, onLoad ) {
    		const shapes = this.parseShape( json.shapes );
    		const geometries = this.parseGeometries( json.geometries, shapes );
    		const images = this.parseImages( json.images, function () {
    			if ( onLoad !== undefined ) onLoad( object );
    		} );
    		const textures = this.parseTextures( json.textures, images );
    		const materials = this.parseMaterials( json.materials, textures );
    		const object = this.parseObject( json.object, geometries, materials );
    		if ( json.animations ) {
    			object.animations = this.parseAnimations( json.animations );
    		}
    		if ( json.images === undefined || json.images.length === 0 ) {
    			if ( onLoad !== undefined ) onLoad( object );
    		}
    		return object;
    	},
    	parseShape: function ( json ) {
    		const shapes = {};
    		if ( json !== undefined ) {
    			for ( let i = 0, l = json.length; i < l; i ++ ) {
    				const shape = new Shape().fromJSON( json[ i ] );
    				shapes[ shape.uuid ] = shape;
    			}
    		}
    		return shapes;
    	},
    	parseGeometries: function ( json, shapes ) {
    		const geometries = {};
    		let geometryShapes;
    		if ( json !== undefined ) {
    			const bufferGeometryLoader = new BufferGeometryLoader();
    			for ( let i = 0, l = json.length; i < l; i ++ ) {
    				let geometry;
    				const data = json[ i ];
    				switch ( data.type ) {
    					case 'PlaneGeometry':
    					case 'PlaneBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.width,
    							data.height,
    							data.widthSegments,
    							data.heightSegments
    						);
    						break;
    					case 'BoxGeometry':
    					case 'BoxBufferGeometry':
    					case 'CubeGeometry':
    						geometry = new Geometries[ data.type ](
    							data.width,
    							data.height,
    							data.depth,
    							data.widthSegments,
    							data.heightSegments,
    							data.depthSegments
    						);
    						break;
    					case 'CircleGeometry':
    					case 'CircleBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.radius,
    							data.segments,
    							data.thetaStart,
    							data.thetaLength
    						);
    						break;
    					case 'CylinderGeometry':
    					case 'CylinderBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.radiusTop,
    							data.radiusBottom,
    							data.height,
    							data.radialSegments,
    							data.heightSegments,
    							data.openEnded,
    							data.thetaStart,
    							data.thetaLength
    						);
    						break;
    					case 'ConeGeometry':
    					case 'ConeBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.radius,
    							data.height,
    							data.radialSegments,
    							data.heightSegments,
    							data.openEnded,
    							data.thetaStart,
    							data.thetaLength
    						);
    						break;
    					case 'SphereGeometry':
    					case 'SphereBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.radius,
    							data.widthSegments,
    							data.heightSegments,
    							data.phiStart,
    							data.phiLength,
    							data.thetaStart,
    							data.thetaLength
    						);
    						break;
    					case 'DodecahedronGeometry':
    					case 'DodecahedronBufferGeometry':
    					case 'IcosahedronGeometry':
    					case 'IcosahedronBufferGeometry':
    					case 'OctahedronGeometry':
    					case 'OctahedronBufferGeometry':
    					case 'TetrahedronGeometry':
    					case 'TetrahedronBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.radius,
    							data.detail
    						);
    						break;
    					case 'RingGeometry':
    					case 'RingBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.innerRadius,
    							data.outerRadius,
    							data.thetaSegments,
    							data.phiSegments,
    							data.thetaStart,
    							data.thetaLength
    						);
    						break;
    					case 'TorusGeometry':
    					case 'TorusBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.radius,
    							data.tube,
    							data.radialSegments,
    							data.tubularSegments,
    							data.arc
    						);
    						break;
    					case 'TorusKnotGeometry':
    					case 'TorusKnotBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.radius,
    							data.tube,
    							data.tubularSegments,
    							data.radialSegments,
    							data.p,
    							data.q
    						);
    						break;
    					case 'TubeGeometry':
    					case 'TubeBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							new Curves[ data.path.type ]().fromJSON( data.path ),
    							data.tubularSegments,
    							data.radius,
    							data.radialSegments,
    							data.closed
    						);
    						break;
    					case 'LatheGeometry':
    					case 'LatheBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.points,
    							data.segments,
    							data.phiStart,
    							data.phiLength
    						);
    						break;
    					case 'PolyhedronGeometry':
    					case 'PolyhedronBufferGeometry':
    						geometry = new Geometries[ data.type ](
    							data.vertices,
    							data.indices,
    							data.radius,
    							data.details
    						);
    						break;
    					case 'ShapeGeometry':
    					case 'ShapeBufferGeometry':
    						geometryShapes = [];
    						for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {
    							const shape = shapes[ data.shapes[ j ] ];
    							geometryShapes.push( shape );
    						}
    						geometry = new Geometries[ data.type ](
    							geometryShapes,
    							data.curveSegments
    						);
    						break;
    					case 'ExtrudeGeometry':
    					case 'ExtrudeBufferGeometry':
    						geometryShapes = [];
    						for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {
    							const shape = shapes[ data.shapes[ j ] ];
    							geometryShapes.push( shape );
    						}
    						const extrudePath = data.options.extrudePath;
    						if ( extrudePath !== undefined ) {
    							data.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );
    						}
    						geometry = new Geometries[ data.type ](
    							geometryShapes,
    							data.options
    						);
    						break;
    					case 'BufferGeometry':
    					case 'InstancedBufferGeometry':
    						geometry = bufferGeometryLoader.parse( data );
    						break;
    					case 'Geometry':
    						console.error( 'THREE.ObjectLoader: Loading "Geometry" is not supported anymore.' );
    						break;
    					default:
    						console.warn( 'THREE.ObjectLoader: Unsupported geometry type "' + data.type + '"' );
    						continue;
    				}
    				geometry.uuid = data.uuid;
    				if ( data.name !== undefined ) geometry.name = data.name;
    				if ( geometry.isBufferGeometry === true && data.userData !== undefined ) geometry.userData = data.userData;
    				geometries[ data.uuid ] = geometry;
    			}
    		}
    		return geometries;
    	},
    	parseMaterials: function ( json, textures ) {
    		const cache = {};
    		const materials = {};
    		if ( json !== undefined ) {
    			const loader = new MaterialLoader();
    			loader.setTextures( textures );
    			for ( let i = 0, l = json.length; i < l; i ++ ) {
    				const data = json[ i ];
    				if ( data.type === 'MultiMaterial' ) {
    					const array = [];
    					for ( let j = 0; j < data.materials.length; j ++ ) {
    						const material = data.materials[ j ];
    						if ( cache[ material.uuid ] === undefined ) {
    							cache[ material.uuid ] = loader.parse( material );
    						}
    						array.push( cache[ material.uuid ] );
    					}
    					materials[ data.uuid ] = array;
    				} else {
    					if ( cache[ data.uuid ] === undefined ) {
    						cache[ data.uuid ] = loader.parse( data );
    					}
    					materials[ data.uuid ] = cache[ data.uuid ];
    				}
    			}
    		}
    		return materials;
    	},
    	parseAnimations: function ( json ) {
    		const animations = [];
    		for ( let i = 0; i < json.length; i ++ ) {
    			const data = json[ i ];
    			const clip = AnimationClip.parse( data );
    			if ( data.uuid !== undefined ) clip.uuid = data.uuid;
    			animations.push( clip );
    		}
    		return animations;
    	},
    	parseImages: function ( json, onLoad ) {
    		const scope = this;
    		const images = {};
    		let loader;
    		function loadImage( url ) {
    			scope.manager.itemStart( url );
    			return loader.load( url, function () {
    				scope.manager.itemEnd( url );
    			}, undefined, function () {
    				scope.manager.itemError( url );
    				scope.manager.itemEnd( url );
    			} );
    		}
    		if ( json !== undefined && json.length > 0 ) {
    			const manager = new LoadingManager( onLoad );
    			loader = new ImageLoader( manager );
    			loader.setCrossOrigin( this.crossOrigin );
    			for ( let i = 0, il = json.length; i < il; i ++ ) {
    				const image = json[ i ];
    				const url = image.url;
    				if ( Array.isArray( url ) ) {
    					images[ image.uuid ] = [];
    					for ( let j = 0, jl = url.length; j < jl; j ++ ) {
    						const currentUrl = url[ j ];
    						const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( currentUrl ) ? currentUrl : scope.resourcePath + currentUrl;
    						images[ image.uuid ].push( loadImage( path ) );
    					}
    				} else {
    					const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( image.url ) ? image.url : scope.resourcePath + image.url;
    					images[ image.uuid ] = loadImage( path );
    				}
    			}
    		}
    		return images;
    	},
    	parseTextures: function ( json, images ) {
    		function parseConstant( value, type ) {
    			if ( typeof value === 'number' ) return value;
    			console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );
    			return type[ value ];
    		}
    		const textures = {};
    		if ( json !== undefined ) {
    			for ( let i = 0, l = json.length; i < l; i ++ ) {
    				const data = json[ i ];
    				if ( data.image === undefined ) {
    					console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );
    				}
    				if ( images[ data.image ] === undefined ) {
    					console.warn( 'THREE.ObjectLoader: Undefined image', data.image );
    				}
    				let texture;
    				if ( Array.isArray( images[ data.image ] ) ) {
    					texture = new CubeTexture( images[ data.image ] );
    				} else {
    					texture = new Texture( images[ data.image ] );
    				}
    				texture.needsUpdate = true;
    				texture.uuid = data.uuid;
    				if ( data.name !== undefined ) texture.name = data.name;
    				if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );
    				if ( data.offset !== undefined ) texture.offset.fromArray( data.offset );
    				if ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );
    				if ( data.center !== undefined ) texture.center.fromArray( data.center );
    				if ( data.rotation !== undefined ) texture.rotation = data.rotation;
    				if ( data.wrap !== undefined ) {
    					texture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );
    					texture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );
    				}
    				if ( data.format !== undefined ) texture.format = data.format;
    				if ( data.type !== undefined ) texture.type = data.type;
    				if ( data.encoding !== undefined ) texture.encoding = data.encoding;
    				if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );
    				if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );
    				if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;
    				if ( data.flipY !== undefined ) texture.flipY = data.flipY;
    				if ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;
    				if ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;
    				textures[ data.uuid ] = texture;
    			}
    		}
    		return textures;
    	},
    	parseObject: function ( data, geometries, materials ) {
    		let object;
    		function getGeometry( name ) {
    			if ( geometries[ name ] === undefined ) {
    				console.warn( 'THREE.ObjectLoader: Undefined geometry', name );
    			}
    			return geometries[ name ];
    		}
    		function getMaterial( name ) {
    			if ( name === undefined ) return undefined;
    			if ( Array.isArray( name ) ) {
    				const array = [];
    				for ( let i = 0, l = name.length; i < l; i ++ ) {
    					const uuid = name[ i ];
    					if ( materials[ uuid ] === undefined ) {
    						console.warn( 'THREE.ObjectLoader: Undefined material', uuid );
    					}
    					array.push( materials[ uuid ] );
    				}
    				return array;
    			}
    			if ( materials[ name ] === undefined ) {
    				console.warn( 'THREE.ObjectLoader: Undefined material', name );
    			}
    			return materials[ name ];
    		}
    		let geometry, material;
    		switch ( data.type ) {
    			case 'Scene':
    				object = new Scene();
    				if ( data.background !== undefined ) {
    					if ( Number.isInteger( data.background ) ) {
    						object.background = new Color( data.background );
    					}
    				}
    				if ( data.fog !== undefined ) {
    					if ( data.fog.type === 'Fog' ) {
    						object.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );
    					} else if ( data.fog.type === 'FogExp2' ) {
    						object.fog = new FogExp2( data.fog.color, data.fog.density );
    					}
    				}
    				break;
    			case 'PerspectiveCamera':
    				object = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );
    				if ( data.focus !== undefined ) object.focus = data.focus;
    				if ( data.zoom !== undefined ) object.zoom = data.zoom;
    				if ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;
    				if ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;
    				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
    				break;
    			case 'OrthographicCamera':
    				object = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );
    				if ( data.zoom !== undefined ) object.zoom = data.zoom;
    				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
    				break;
    			case 'AmbientLight':
    				object = new AmbientLight( data.color, data.intensity );
    				break;
    			case 'DirectionalLight':
    				object = new DirectionalLight( data.color, data.intensity );
    				break;
    			case 'PointLight':
    				object = new PointLight( data.color, data.intensity, data.distance, data.decay );
    				break;
    			case 'RectAreaLight':
    				object = new RectAreaLight( data.color, data.intensity, data.width, data.height );
    				break;
    			case 'SpotLight':
    				object = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );
    				break;
    			case 'HemisphereLight':
    				object = new HemisphereLight( data.color, data.groundColor, data.intensity );
    				break;
    			case 'LightProbe':
    				object = new LightProbe().fromJSON( data );
    				break;
    			case 'SkinnedMesh':
    				console.warn( 'THREE.ObjectLoader.parseObject() does not support SkinnedMesh yet.' );
    			case 'Mesh':
    				geometry = getGeometry( data.geometry );
    				material = getMaterial( data.material );
    				object = new Mesh( geometry, material );
    				break;
    			case 'InstancedMesh':
    				geometry = getGeometry( data.geometry );
    				material = getMaterial( data.material );
    				const count = data.count;
    				const instanceMatrix = data.instanceMatrix;
    				object = new InstancedMesh( geometry, material, count );
    				object.instanceMatrix = new BufferAttribute( new Float32Array( instanceMatrix.array ), 16 );
    				break;
    			case 'LOD':
    				object = new LOD();
    				break;
    			case 'Line':
    				object = new Line( getGeometry( data.geometry ), getMaterial( data.material ), data.mode );
    				break;
    			case 'LineLoop':
    				object = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );
    				break;
    			case 'LineSegments':
    				object = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );
    				break;
    			case 'PointCloud':
    			case 'Points':
    				object = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );
    				break;
    			case 'Sprite':
    				object = new Sprite( getMaterial( data.material ) );
    				break;
    			case 'Group':
    				object = new Group();
    				break;
    			default:
    				object = new Object3D();
    		}
    		object.uuid = data.uuid;
    		if ( data.name !== undefined ) object.name = data.name;
    		if ( data.matrix !== undefined ) {
    			object.matrix.fromArray( data.matrix );
    			if ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;
    			if ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );
    		} else {
    			if ( data.position !== undefined ) object.position.fromArray( data.position );
    			if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
    			if ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );
    			if ( data.scale !== undefined ) object.scale.fromArray( data.scale );
    		}
    		if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
    		if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;
    		if ( data.shadow ) {
    			if ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;
    			if ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;
    			if ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;
    			if ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );
    			if ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );
    		}
    		if ( data.visible !== undefined ) object.visible = data.visible;
    		if ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;
    		if ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;
    		if ( data.userData !== undefined ) object.userData = data.userData;
    		if ( data.layers !== undefined ) object.layers.mask = data.layers;
    		if ( data.children !== undefined ) {
    			const children = data.children;
    			for ( let i = 0; i < children.length; i ++ ) {
    				object.add( this.parseObject( children[ i ], geometries, materials ) );
    			}
    		}
    		if ( data.type === 'LOD' ) {
    			if ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;
    			const levels = data.levels;
    			for ( let l = 0; l < levels.length; l ++ ) {
    				const level = levels[ l ];
    				const child = object.getObjectByProperty( 'uuid', level.object );
    				if ( child !== undefined ) {
    					object.addLevel( child, level.distance );
    				}
    			}
    		}
    		return object;
    	}
    } );
    const TEXTURE_MAPPING = {
    	UVMapping: UVMapping,
    	CubeReflectionMapping: CubeReflectionMapping,
    	CubeRefractionMapping: CubeRefractionMapping,
    	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
    	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
    	CubeUVReflectionMapping: CubeUVReflectionMapping,
    	CubeUVRefractionMapping: CubeUVRefractionMapping
    };
    const TEXTURE_WRAPPING = {
    	RepeatWrapping: RepeatWrapping,
    	ClampToEdgeWrapping: ClampToEdgeWrapping,
    	MirroredRepeatWrapping: MirroredRepeatWrapping
    };
    const TEXTURE_FILTER = {
    	NearestFilter: NearestFilter,
    	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
    	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
    	LinearFilter: LinearFilter,
    	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
    	LinearMipmapLinearFilter: LinearMipmapLinearFilter
    };
    function ImageBitmapLoader( manager ) {
    	if ( typeof createImageBitmap === 'undefined' ) {
    		console.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );
    	}
    	if ( typeof fetch === 'undefined' ) {
    		console.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );
    	}
    	Loader.call( this, manager );
    	this.options = { premultiplyAlpha: 'none' };
    }
    ImageBitmapLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: ImageBitmapLoader,
    	isImageBitmapLoader: true,
    	setOptions: function setOptions( options ) {
    		this.options = options;
    		return this;
    	},
    	load: function ( url, onLoad, onProgress, onError ) {
    		if ( url === undefined ) url = '';
    		if ( this.path !== undefined ) url = this.path + url;
    		url = this.manager.resolveURL( url );
    		const scope = this;
    		const cached = Cache.get( url );
    		if ( cached !== undefined ) {
    			scope.manager.itemStart( url );
    			setTimeout( function () {
    				if ( onLoad ) onLoad( cached );
    				scope.manager.itemEnd( url );
    			}, 0 );
    			return cached;
    		}
    		fetch( url ).then( function ( res ) {
    			return res.blob();
    		} ).then( function ( blob ) {
    			return createImageBitmap( blob, scope.options );
    		} ).then( function ( imageBitmap ) {
    			Cache.add( url, imageBitmap );
    			if ( onLoad ) onLoad( imageBitmap );
    			scope.manager.itemEnd( url );
    		} ).catch( function ( e ) {
    			if ( onError ) onError( e );
    			scope.manager.itemError( url );
    			scope.manager.itemEnd( url );
    		} );
    		scope.manager.itemStart( url );
    	}
    } );
    function ShapePath() {
    	this.type = 'ShapePath';
    	this.color = new Color();
    	this.subPaths = [];
    	this.currentPath = null;
    }
    Object.assign( ShapePath.prototype, {
    	moveTo: function ( x, y ) {
    		this.currentPath = new Path();
    		this.subPaths.push( this.currentPath );
    		this.currentPath.moveTo( x, y );
    		return this;
    	},
    	lineTo: function ( x, y ) {
    		this.currentPath.lineTo( x, y );
    		return this;
    	},
    	quadraticCurveTo: function ( aCPx, aCPy, aX, aY ) {
    		this.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );
    		return this;
    	},
    	bezierCurveTo: function ( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
    		this.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );
    		return this;
    	},
    	splineThru: function ( pts ) {
    		this.currentPath.splineThru( pts );
    		return this;
    	},
    	toShapes: function ( isCCW, noHoles ) {
    		function toShapesNoHoles( inSubpaths ) {
    			const shapes = [];
    			for ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {
    				const tmpPath = inSubpaths[ i ];
    				const tmpShape = new Shape();
    				tmpShape.curves = tmpPath.curves;
    				shapes.push( tmpShape );
    			}
    			return shapes;
    		}
    		function isPointInsidePolygon( inPt, inPolygon ) {
    			const polyLen = inPolygon.length;
    			let inside = false;
    			for ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {
    				let edgeLowPt = inPolygon[ p ];
    				let edgeHighPt = inPolygon[ q ];
    				let edgeDx = edgeHighPt.x - edgeLowPt.x;
    				let edgeDy = edgeHighPt.y - edgeLowPt.y;
    				if ( Math.abs( edgeDy ) > Number.EPSILON ) {
    					if ( edgeDy < 0 ) {
    						edgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;
    						edgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;
    					}
    					if ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) 		continue;
    					if ( inPt.y === edgeLowPt.y ) {
    						if ( inPt.x === edgeLowPt.x )		return	true;
    					} else {
    						const perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );
    						if ( perpEdge === 0 )				return	true;
    						if ( perpEdge < 0 ) 				continue;
    						inside = ! inside;
    					}
    				} else {
    					if ( inPt.y !== edgeLowPt.y ) 		continue;
    					if ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||
    						 ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )		return	true;
    				}
    			}
    			return	inside;
    		}
    		const isClockWise = ShapeUtils.isClockWise;
    		const subPaths = this.subPaths;
    		if ( subPaths.length === 0 ) return [];
    		if ( noHoles === true )	return	toShapesNoHoles( subPaths );
    		let solid, tmpPath, tmpShape;
    		const shapes = [];
    		if ( subPaths.length === 1 ) {
    			tmpPath = subPaths[ 0 ];
    			tmpShape = new Shape();
    			tmpShape.curves = tmpPath.curves;
    			shapes.push( tmpShape );
    			return shapes;
    		}
    		let holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );
    		holesFirst = isCCW ? ! holesFirst : holesFirst;
    		const betterShapeHoles = [];
    		const newShapes = [];
    		let newShapeHoles = [];
    		let mainIdx = 0;
    		let tmpPoints;
    		newShapes[ mainIdx ] = undefined;
    		newShapeHoles[ mainIdx ] = [];
    		for ( let i = 0, l = subPaths.length; i < l; i ++ ) {
    			tmpPath = subPaths[ i ];
    			tmpPoints = tmpPath.getPoints();
    			solid = isClockWise( tmpPoints );
    			solid = isCCW ? ! solid : solid;
    			if ( solid ) {
    				if ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )	mainIdx ++;
    				newShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };
    				newShapes[ mainIdx ].s.curves = tmpPath.curves;
    				if ( holesFirst )	mainIdx ++;
    				newShapeHoles[ mainIdx ] = [];
    			} else {
    				newShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );
    			}
    		}
    		if ( ! newShapes[ 0 ] )	return	toShapesNoHoles( subPaths );
    		if ( newShapes.length > 1 ) {
    			let ambiguous = false;
    			const toChange = [];
    			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
    				betterShapeHoles[ sIdx ] = [];
    			}
    			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
    				const sho = newShapeHoles[ sIdx ];
    				for ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {
    					const ho = sho[ hIdx ];
    					let hole_unassigned = true;
    					for ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {
    						if ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {
    							if ( sIdx !== s2Idx )	toChange.push( { froms: sIdx, tos: s2Idx, hole: hIdx } );
    							if ( hole_unassigned ) {
    								hole_unassigned = false;
    								betterShapeHoles[ s2Idx ].push( ho );
    							} else {
    								ambiguous = true;
    							}
    						}
    					}
    					if ( hole_unassigned ) {
    						betterShapeHoles[ sIdx ].push( ho );
    					}
    				}
    			}
    			if ( toChange.length > 0 ) {
    				if ( ! ambiguous )	newShapeHoles = betterShapeHoles;
    			}
    		}
    		let tmpHoles;
    		for ( let i = 0, il = newShapes.length; i < il; i ++ ) {
    			tmpShape = newShapes[ i ].s;
    			shapes.push( tmpShape );
    			tmpHoles = newShapeHoles[ i ];
    			for ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {
    				tmpShape.holes.push( tmpHoles[ j ].h );
    			}
    		}
    		return shapes;
    	}
    } );
    function Font( data ) {
    	this.type = 'Font';
    	this.data = data;
    }
    Object.assign( Font.prototype, {
    	isFont: true,
    	generateShapes: function ( text, size ) {
    		if ( size === undefined ) size = 100;
    		const shapes = [];
    		const paths = createPaths( text, size, this.data );
    		for ( let p = 0, pl = paths.length; p < pl; p ++ ) {
    			Array.prototype.push.apply( shapes, paths[ p ].toShapes() );
    		}
    		return shapes;
    	}
    } );
    function createPaths( text, size, data ) {
    	const chars = Array.from ? Array.from( text ) : String( text ).split( '' );
    	const scale = size / data.resolution;
    	const line_height = ( data.boundingBox.yMax - data.boundingBox.yMin + data.underlineThickness ) * scale;
    	const paths = [];
    	let offsetX = 0, offsetY = 0;
    	for ( let i = 0; i < chars.length; i ++ ) {
    		const char = chars[ i ];
    		if ( char === '\n' ) {
    			offsetX = 0;
    			offsetY -= line_height;
    		} else {
    			const ret = createPath( char, scale, offsetX, offsetY, data );
    			offsetX += ret.offsetX;
    			paths.push( ret.path );
    		}
    	}
    	return paths;
    }
    function createPath( char, scale, offsetX, offsetY, data ) {
    	const glyph = data.glyphs[ char ] || data.glyphs[ '?' ];
    	if ( ! glyph ) {
    		console.error( 'THREE.Font: character "' + char + '" does not exists in font family ' + data.familyName + '.' );
    		return;
    	}
    	const path = new ShapePath();
    	let x, y, cpx, cpy, cpx1, cpy1, cpx2, cpy2;
    	if ( glyph.o ) {
    		const outline = glyph._cachedOutline || ( glyph._cachedOutline = glyph.o.split( ' ' ) );
    		for ( let i = 0, l = outline.length; i < l; ) {
    			const action = outline[ i ++ ];
    			switch ( action ) {
    				case 'm':
    					x = outline[ i ++ ] * scale + offsetX;
    					y = outline[ i ++ ] * scale + offsetY;
    					path.moveTo( x, y );
    					break;
    				case 'l':
    					x = outline[ i ++ ] * scale + offsetX;
    					y = outline[ i ++ ] * scale + offsetY;
    					path.lineTo( x, y );
    					break;
    				case 'q':
    					cpx = outline[ i ++ ] * scale + offsetX;
    					cpy = outline[ i ++ ] * scale + offsetY;
    					cpx1 = outline[ i ++ ] * scale + offsetX;
    					cpy1 = outline[ i ++ ] * scale + offsetY;
    					path.quadraticCurveTo( cpx1, cpy1, cpx, cpy );
    					break;
    				case 'b':
    					cpx = outline[ i ++ ] * scale + offsetX;
    					cpy = outline[ i ++ ] * scale + offsetY;
    					cpx1 = outline[ i ++ ] * scale + offsetX;
    					cpy1 = outline[ i ++ ] * scale + offsetY;
    					cpx2 = outline[ i ++ ] * scale + offsetX;
    					cpy2 = outline[ i ++ ] * scale + offsetY;
    					path.bezierCurveTo( cpx1, cpy1, cpx2, cpy2, cpx, cpy );
    					break;
    			}
    		}
    	}
    	return { offsetX: glyph.ha * scale, path: path };
    }
    function FontLoader( manager ) {
    	Loader.call( this, manager );
    }
    FontLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: FontLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const loader = new FileLoader( this.manager );
    		loader.setPath( this.path );
    		loader.setRequestHeader( this.requestHeader );
    		loader.load( url, function ( text ) {
    			let json;
    			try {
    				json = JSON.parse( text );
    			} catch ( e ) {
    				console.warn( 'THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead.' );
    				json = JSON.parse( text.substring( 65, text.length - 2 ) );
    			}
    			const font = scope.parse( json );
    			if ( onLoad ) onLoad( font );
    		}, onProgress, onError );
    	},
    	parse: function ( json ) {
    		return new Font( json );
    	}
    } );
    let _context;
    const AudioContext = {
    	getContext: function () {
    		if ( _context === undefined ) {
    			_context = new ( window.AudioContext || window.webkitAudioContext )();
    		}
    		return _context;
    	},
    	setContext: function ( value ) {
    		_context = value;
    	}
    };
    function AudioLoader( manager ) {
    	Loader.call( this, manager );
    }
    AudioLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
    	constructor: AudioLoader,
    	load: function ( url, onLoad, onProgress, onError ) {
    		const scope = this;
    		const loader = new FileLoader( scope.manager );
    		loader.setResponseType( 'arraybuffer' );
    		loader.setPath( scope.path );
    		loader.setRequestHeader( scope.requestHeader );
    		loader.load( url, function ( buffer ) {
    			try {
    				const bufferCopy = buffer.slice( 0 );
    				const context = AudioContext.getContext();
    				context.decodeAudioData( bufferCopy, function ( audioBuffer ) {
    					onLoad( audioBuffer );
    				} );
    			} catch ( e ) {
    				if ( onError ) {
    					onError( e );
    				} else {
    					console.error( e );
    				}
    				scope.manager.itemError( url );
    			}
    		}, onProgress, onError );
    	}
    } );
    function HemisphereLightProbe( skyColor, groundColor, intensity ) {
    	LightProbe.call( this, undefined, intensity );
    	const color1 = new Color().set( skyColor );
    	const color2 = new Color().set( groundColor );
    	const sky = new Vector3( color1.r, color1.g, color1.b );
    	const ground = new Vector3( color2.r, color2.g, color2.b );
    	const c0 = Math.sqrt( Math.PI );
    	const c1 = c0 * Math.sqrt( 0.75 );
    	this.sh.coefficients[ 0 ].copy( sky ).add( ground ).multiplyScalar( c0 );
    	this.sh.coefficients[ 1 ].copy( sky ).sub( ground ).multiplyScalar( c1 );
    }
    HemisphereLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {
    	constructor: HemisphereLightProbe,
    	isHemisphereLightProbe: true,
    	copy: function ( source ) {
    		LightProbe.prototype.copy.call( this, source );
    		return this;
    	},
    	toJSON: function ( meta ) {
    		const data = LightProbe.prototype.toJSON.call( this, meta );
    		return data;
    	}
    } );
    function AmbientLightProbe( color, intensity ) {
    	LightProbe.call( this, undefined, intensity );
    	const color1 = new Color().set( color );
    	this.sh.coefficients[ 0 ].set( color1.r, color1.g, color1.b ).multiplyScalar( 2 * Math.sqrt( Math.PI ) );
    }
    AmbientLightProbe.prototype = Object.assign( Object.create( LightProbe.prototype ), {
    	constructor: AmbientLightProbe,
    	isAmbientLightProbe: true,
    	copy: function ( source ) {
    		LightProbe.prototype.copy.call( this, source );
    		return this;
    	},
    	toJSON: function ( meta ) {
    		const data = LightProbe.prototype.toJSON.call( this, meta );
    		return data;
    	}
    } );
    const _eyeRight = new Matrix4();
    const _eyeLeft = new Matrix4();
    function StereoCamera() {
    	this.type = 'StereoCamera';
    	this.aspect = 1;
    	this.eyeSep = 0.064;
    	this.cameraL = new PerspectiveCamera();
    	this.cameraL.layers.enable( 1 );
    	this.cameraL.matrixAutoUpdate = false;
    	this.cameraR = new PerspectiveCamera();
    	this.cameraR.layers.enable( 2 );
    	this.cameraR.matrixAutoUpdate = false;
    	this._cache = {
    		focus: null,
    		fov: null,
    		aspect: null,
    		near: null,
    		far: null,
    		zoom: null,
    		eyeSep: null
    	};
    }
    Object.assign( StereoCamera.prototype, {
    	update: function ( camera ) {
    		const cache = this._cache;
    		const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||
    			cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||
    			cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;
    		if ( needsUpdate ) {
    			cache.focus = camera.focus;
    			cache.fov = camera.fov;
    			cache.aspect = camera.aspect * this.aspect;
    			cache.near = camera.near;
    			cache.far = camera.far;
    			cache.zoom = camera.zoom;
    			cache.eyeSep = this.eyeSep;
    			const projectionMatrix = camera.projectionMatrix.clone();
    			const eyeSepHalf = cache.eyeSep / 2;
    			const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
    			const ymax = ( cache.near * Math.tan( MathUtils.DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;
    			let xmin, xmax;
    			_eyeLeft.elements[ 12 ] = - eyeSepHalf;
    			_eyeRight.elements[ 12 ] = eyeSepHalf;
    			xmin = - ymax * cache.aspect + eyeSepOnProjection;
    			xmax = ymax * cache.aspect + eyeSepOnProjection;
    			projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
    			projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
    			this.cameraL.projectionMatrix.copy( projectionMatrix );
    			xmin = - ymax * cache.aspect - eyeSepOnProjection;
    			xmax = ymax * cache.aspect - eyeSepOnProjection;
    			projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
    			projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
    			this.cameraR.projectionMatrix.copy( projectionMatrix );
    		}
    		this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );
    		this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );
    	}
    } );
    class Clock {
    	constructor( autoStart ) {
    		this.autoStart = ( autoStart !== undefined ) ? autoStart : true;
    		this.startTime = 0;
    		this.oldTime = 0;
    		this.elapsedTime = 0;
    		this.running = false;
    	}
    	start() {
    		this.startTime = ( typeof performance === 'undefined' ? Date : performance ).now();
    		this.oldTime = this.startTime;
    		this.elapsedTime = 0;
    		this.running = true;
    	}
    	stop() {
    		this.getElapsedTime();
    		this.running = false;
    		this.autoStart = false;
    	}
    	getElapsedTime() {
    		this.getDelta();
    		return this.elapsedTime;
    	}
    	getDelta() {
    		let diff = 0;
    		if ( this.autoStart && ! this.running ) {
    			this.start();
    			return 0;
    		}
    		if ( this.running ) {
    			const newTime = ( typeof performance === 'undefined' ? Date : performance ).now();
    			diff = ( newTime - this.oldTime ) / 1000;
    			this.oldTime = newTime;
    			this.elapsedTime += diff;
    		}
    		return diff;
    	}
    }
    const _position$2 = new Vector3();
    const _quaternion$3 = new Quaternion();
    const _scale$1 = new Vector3();
    const _orientation = new Vector3();
    class AudioListener extends Object3D {
    	constructor() {
    		super();
    		this.type = 'AudioListener';
    		this.context = AudioContext.getContext();
    		this.gain = this.context.createGain();
    		this.gain.connect( this.context.destination );
    		this.filter = null;
    		this.timeDelta = 0;
    		this._clock = new Clock();
    	}
    	getInput() {
    		return this.gain;
    	}
    	removeFilter() {
    		if ( this.filter !== null ) {
    			this.gain.disconnect( this.filter );
    			this.filter.disconnect( this.context.destination );
    			this.gain.connect( this.context.destination );
    			this.filter = null;
    		}
    		return this;
    	}
    	getFilter() {
    		return this.filter;
    	}
    	setFilter( value ) {
    		if ( this.filter !== null ) {
    			this.gain.disconnect( this.filter );
    			this.filter.disconnect( this.context.destination );
    		} else {
    			this.gain.disconnect( this.context.destination );
    		}
    		this.filter = value;
    		this.gain.connect( this.filter );
    		this.filter.connect( this.context.destination );
    		return this;
    	}
    	getMasterVolume() {
    		return this.gain.gain.value;
    	}
    	setMasterVolume( value ) {
    		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
    		return this;
    	}
    	updateMatrixWorld( force ) {
    		super.updateMatrixWorld( force );
    		const listener = this.context.listener;
    		const up = this.up;
    		this.timeDelta = this._clock.getDelta();
    		this.matrixWorld.decompose( _position$2, _quaternion$3, _scale$1 );
    		_orientation.set( 0, 0, - 1 ).applyQuaternion( _quaternion$3 );
    		if ( listener.positionX ) {
    			const endTime = this.context.currentTime + this.timeDelta;
    			listener.positionX.linearRampToValueAtTime( _position$2.x, endTime );
    			listener.positionY.linearRampToValueAtTime( _position$2.y, endTime );
    			listener.positionZ.linearRampToValueAtTime( _position$2.z, endTime );
    			listener.forwardX.linearRampToValueAtTime( _orientation.x, endTime );
    			listener.forwardY.linearRampToValueAtTime( _orientation.y, endTime );
    			listener.forwardZ.linearRampToValueAtTime( _orientation.z, endTime );
    			listener.upX.linearRampToValueAtTime( up.x, endTime );
    			listener.upY.linearRampToValueAtTime( up.y, endTime );
    			listener.upZ.linearRampToValueAtTime( up.z, endTime );
    		} else {
    			listener.setPosition( _position$2.x, _position$2.y, _position$2.z );
    			listener.setOrientation( _orientation.x, _orientation.y, _orientation.z, up.x, up.y, up.z );
    		}
    	}
    }
    class Audio extends Object3D {
    	constructor( listener ) {
    		super();
    		this.type = 'Audio';
    		this.listener = listener;
    		this.context = listener.context;
    		this.gain = this.context.createGain();
    		this.gain.connect( listener.getInput() );
    		this.autoplay = false;
    		this.buffer = null;
    		this.detune = 0;
    		this.loop = false;
    		this.loopStart = 0;
    		this.loopEnd = 0;
    		this.offset = 0;
    		this.duration = undefined;
    		this.playbackRate = 1;
    		this.isPlaying = false;
    		this.hasPlaybackControl = true;
    		this.source = null;
    		this.sourceType = 'empty';
    		this._startedAt = 0;
    		this._progress = 0;
    		this._connected = false;
    		this.filters = [];
    	}
    	getOutput() {
    		return this.gain;
    	}
    	setNodeSource( audioNode ) {
    		this.hasPlaybackControl = false;
    		this.sourceType = 'audioNode';
    		this.source = audioNode;
    		this.connect();
    		return this;
    	}
    	setMediaElementSource( mediaElement ) {
    		this.hasPlaybackControl = false;
    		this.sourceType = 'mediaNode';
    		this.source = this.context.createMediaElementSource( mediaElement );
    		this.connect();
    		return this;
    	}
    	setMediaStreamSource( mediaStream ) {
    		this.hasPlaybackControl = false;
    		this.sourceType = 'mediaStreamNode';
    		this.source = this.context.createMediaStreamSource( mediaStream );
    		this.connect();
    		return this;
    	}
    	setBuffer( audioBuffer ) {
    		this.buffer = audioBuffer;
    		this.sourceType = 'buffer';
    		if ( this.autoplay ) this.play();
    		return this;
    	}
    	play( delay ) {
    		if ( delay === undefined ) delay = 0;
    		if ( this.isPlaying === true ) {
    			console.warn( 'THREE.Audio: Audio is already playing.' );
    			return;
    		}
    		if ( this.hasPlaybackControl === false ) {
    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;
    		}
    		this._startedAt = this.context.currentTime + delay;
    		const source = this.context.createBufferSource();
    		source.buffer = this.buffer;
    		source.loop = this.loop;
    		source.loopStart = this.loopStart;
    		source.loopEnd = this.loopEnd;
    		source.onended = this.onEnded.bind( this );
    		source.start( this._startedAt, this._progress + this.offset, this.duration );
    		this.isPlaying = true;
    		this.source = source;
    		this.setDetune( this.detune );
    		this.setPlaybackRate( this.playbackRate );
    		return this.connect();
    	}
    	pause() {
    		if ( this.hasPlaybackControl === false ) {
    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;
    		}
    		if ( this.isPlaying === true ) {
    			this._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;
    			if ( this.loop === true ) {
    				this._progress = this._progress % ( this.duration || this.buffer.duration );
    			}
    			this.source.stop();
    			this.source.onended = null;
    			this.isPlaying = false;
    		}
    		return this;
    	}
    	stop() {
    		if ( this.hasPlaybackControl === false ) {
    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;
    		}
    		this._progress = 0;
    		this.source.stop();
    		this.source.onended = null;
    		this.isPlaying = false;
    		return this;
    	}
    	connect() {
    		if ( this.filters.length > 0 ) {
    			this.source.connect( this.filters[ 0 ] );
    			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {
    				this.filters[ i - 1 ].connect( this.filters[ i ] );
    			}
    			this.filters[ this.filters.length - 1 ].connect( this.getOutput() );
    		} else {
    			this.source.connect( this.getOutput() );
    		}
    		this._connected = true;
    		return this;
    	}
    	disconnect() {
    		if ( this.filters.length > 0 ) {
    			this.source.disconnect( this.filters[ 0 ] );
    			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {
    				this.filters[ i - 1 ].disconnect( this.filters[ i ] );
    			}
    			this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );
    		} else {
    			this.source.disconnect( this.getOutput() );
    		}
    		this._connected = false;
    		return this;
    	}
    	getFilters() {
    		return this.filters;
    	}
    	setFilters( value ) {
    		if ( ! value ) value = [];
    		if ( this._connected === true ) {
    			this.disconnect();
    			this.filters = value;
    			this.connect();
    		} else {
    			this.filters = value;
    		}
    		return this;
    	}
    	setDetune( value ) {
    		this.detune = value;
    		if ( this.source.detune === undefined ) return;
    		if ( this.isPlaying === true ) {
    			this.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );
    		}
    		return this;
    	}
    	getDetune() {
    		return this.detune;
    	}
    	getFilter() {
    		return this.getFilters()[ 0 ];
    	}
    	setFilter( filter ) {
    		return this.setFilters( filter ? [ filter ] : [] );
    	}
    	setPlaybackRate( value ) {
    		if ( this.hasPlaybackControl === false ) {
    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;
    		}
    		this.playbackRate = value;
    		if ( this.isPlaying === true ) {
    			this.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );
    		}
    		return this;
    	}
    	getPlaybackRate() {
    		return this.playbackRate;
    	}
    	onEnded() {
    		this.isPlaying = false;
    	}
    	getLoop() {
    		if ( this.hasPlaybackControl === false ) {
    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return false;
    		}
    		return this.loop;
    	}
    	setLoop( value ) {
    		if ( this.hasPlaybackControl === false ) {
    			console.warn( 'THREE.Audio: this Audio has no playback control.' );
    			return;
    		}
    		this.loop = value;
    		if ( this.isPlaying === true ) {
    			this.source.loop = this.loop;
    		}
    		return this;
    	}
    	setLoopStart( value ) {
    		this.loopStart = value;
    		return this;
    	}
    	setLoopEnd( value ) {
    		this.loopEnd = value;
    		return this;
    	}
    	getVolume() {
    		return this.gain.gain.value;
    	}
    	setVolume( value ) {
    		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
    		return this;
    	}
    }
    const _position$3 = new Vector3();
    const _quaternion$4 = new Quaternion();
    const _scale$2 = new Vector3();
    const _orientation$1 = new Vector3();
    class PositionalAudio extends Audio {
    	constructor( listener ) {
    		super( listener );
    		this.panner = this.context.createPanner();
    		this.panner.panningModel = 'HRTF';
    		this.panner.connect( this.gain );
    	}
    	getOutput() {
    		return this.panner;
    	}
    	getRefDistance() {
    		return this.panner.refDistance;
    	}
    	setRefDistance( value ) {
    		this.panner.refDistance = value;
    		return this;
    	}
    	getRolloffFactor() {
    		return this.panner.rolloffFactor;
    	}
    	setRolloffFactor( value ) {
    		this.panner.rolloffFactor = value;
    		return this;
    	}
    	getDistanceModel() {
    		return this.panner.distanceModel;
    	}
    	setDistanceModel( value ) {
    		this.panner.distanceModel = value;
    		return this;
    	}
    	getMaxDistance() {
    		return this.panner.maxDistance;
    	}
    	setMaxDistance( value ) {
    		this.panner.maxDistance = value;
    		return this;
    	}
    	setDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {
    		this.panner.coneInnerAngle = coneInnerAngle;
    		this.panner.coneOuterAngle = coneOuterAngle;
    		this.panner.coneOuterGain = coneOuterGain;
    		return this;
    	}
    	updateMatrixWorld( force ) {
    		super.updateMatrixWorld( force );
    		if ( this.hasPlaybackControl === true && this.isPlaying === false ) return;
    		this.matrixWorld.decompose( _position$3, _quaternion$4, _scale$2 );
    		_orientation$1.set( 0, 0, 1 ).applyQuaternion( _quaternion$4 );
    		const panner = this.panner;
    		if ( panner.positionX ) {
    			const endTime = this.context.currentTime + this.listener.timeDelta;
    			panner.positionX.linearRampToValueAtTime( _position$3.x, endTime );
    			panner.positionY.linearRampToValueAtTime( _position$3.y, endTime );
    			panner.positionZ.linearRampToValueAtTime( _position$3.z, endTime );
    			panner.orientationX.linearRampToValueAtTime( _orientation$1.x, endTime );
    			panner.orientationY.linearRampToValueAtTime( _orientation$1.y, endTime );
    			panner.orientationZ.linearRampToValueAtTime( _orientation$1.z, endTime );
    		} else {
    			panner.setPosition( _position$3.x, _position$3.y, _position$3.z );
    			panner.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z );
    		}
    	}
    }
    class AudioAnalyser {
    	constructor( audio, fftSize ) {
    		this.analyser = audio.context.createAnalyser();
    		this.analyser.fftSize = fftSize !== undefined ? fftSize : 2048;
    		this.data = new Uint8Array( this.analyser.frequencyBinCount );
    		audio.getOutput().connect( this.analyser );
    	}
    	getFrequencyData() {
    		this.analyser.getByteFrequencyData( this.data );
    		return this.data;
    	}
    	getAverageFrequency() {
    		let value = 0;
    		const data = this.getFrequencyData();
    		for ( let i = 0; i < data.length; i ++ ) {
    			value += data[ i ];
    		}
    		return value / data.length;
    	}
    }
    function PropertyMixer( binding, typeName, valueSize ) {
    	this.binding = binding;
    	this.valueSize = valueSize;
    	let mixFunction,
    		mixFunctionAdditive,
    		setIdentity;
    	switch ( typeName ) {
    		case 'quaternion':
    			mixFunction = this._slerp;
    			mixFunctionAdditive = this._slerpAdditive;
    			setIdentity = this._setAdditiveIdentityQuaternion;
    			this.buffer = new Float64Array( valueSize * 6 );
    			this._workIndex = 5;
    			break;
    		case 'string':
    		case 'bool':
    			mixFunction = this._select;
    			mixFunctionAdditive = this._select;
    			setIdentity = this._setAdditiveIdentityOther;
    			this.buffer = new Array( valueSize * 5 );
    			break;
    		default:
    			mixFunction = this._lerp;
    			mixFunctionAdditive = this._lerpAdditive;
    			setIdentity = this._setAdditiveIdentityNumeric;
    			this.buffer = new Float64Array( valueSize * 5 );
    	}
    	this._mixBufferRegion = mixFunction;
    	this._mixBufferRegionAdditive = mixFunctionAdditive;
    	this._setIdentity = setIdentity;
    	this._origIndex = 3;
    	this._addIndex = 4;
    	this.cumulativeWeight = 0;
    	this.cumulativeWeightAdditive = 0;
    	this.useCount = 0;
    	this.referenceCount = 0;
    }
    Object.assign( PropertyMixer.prototype, {
    	accumulate: function ( accuIndex, weight ) {
    		const buffer = this.buffer,
    			stride = this.valueSize,
    			offset = accuIndex * stride + stride;
    		let currentWeight = this.cumulativeWeight;
    		if ( currentWeight === 0 ) {
    			for ( let i = 0; i !== stride; ++ i ) {
    				buffer[ offset + i ] = buffer[ i ];
    			}
    			currentWeight = weight;
    		} else {
    			currentWeight += weight;
    			const mix = weight / currentWeight;
    			this._mixBufferRegion( buffer, offset, 0, mix, stride );
    		}
    		this.cumulativeWeight = currentWeight;
    	},
    	accumulateAdditive: function ( weight ) {
    		const buffer = this.buffer,
    			stride = this.valueSize,
    			offset = stride * this._addIndex;
    		if ( this.cumulativeWeightAdditive === 0 ) {
    			this._setIdentity();
    		}
    		this._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );
    		this.cumulativeWeightAdditive += weight;
    	},
    	apply: function ( accuIndex ) {
    		const stride = this.valueSize,
    			buffer = this.buffer,
    			offset = accuIndex * stride + stride,
    			weight = this.cumulativeWeight,
    			weightAdditive = this.cumulativeWeightAdditive,
    			binding = this.binding;
    		this.cumulativeWeight = 0;
    		this.cumulativeWeightAdditive = 0;
    		if ( weight < 1 ) {
    			const originalValueOffset = stride * this._origIndex;
    			this._mixBufferRegion(
    				buffer, offset, originalValueOffset, 1 - weight, stride );
    		}
    		if ( weightAdditive > 0 ) {
    			this._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );
    		}
    		for ( let i = stride, e = stride + stride; i !== e; ++ i ) {
    			if ( buffer[ i ] !== buffer[ i + stride ] ) {
    				binding.setValue( buffer, offset );
    				break;
    			}
    		}
    	},
    	saveOriginalState: function () {
    		const binding = this.binding;
    		const buffer = this.buffer,
    			stride = this.valueSize,
    			originalValueOffset = stride * this._origIndex;
    		binding.getValue( buffer, originalValueOffset );
    		for ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {
    			buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];
    		}
    		this._setIdentity();
    		this.cumulativeWeight = 0;
    		this.cumulativeWeightAdditive = 0;
    	},
    	restoreOriginalState: function () {
    		const originalValueOffset = this.valueSize * 3;
    		this.binding.setValue( this.buffer, originalValueOffset );
    	},
    	_setAdditiveIdentityNumeric: function () {
    		const startIndex = this._addIndex * this.valueSize;
    		const endIndex = startIndex + this.valueSize;
    		for ( let i = startIndex; i < endIndex; i ++ ) {
    			this.buffer[ i ] = 0;
    		}
    	},
    	_setAdditiveIdentityQuaternion: function () {
    		this._setAdditiveIdentityNumeric();
    		this.buffer[ this._addIndex * this.valueSize + 3 ] = 1;
    	},
    	_setAdditiveIdentityOther: function () {
    		const startIndex = this._origIndex * this.valueSize;
    		const targetIndex = this._addIndex * this.valueSize;
    		for ( let i = 0; i < this.valueSize; i ++ ) {
    			this.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];
    		}
    	},
    	_select: function ( buffer, dstOffset, srcOffset, t, stride ) {
    		if ( t >= 0.5 ) {
    			for ( let i = 0; i !== stride; ++ i ) {
    				buffer[ dstOffset + i ] = buffer[ srcOffset + i ];
    			}
    		}
    	},
    	_slerp: function ( buffer, dstOffset, srcOffset, t ) {
    		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );
    	},
    	_slerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {
    		const workOffset = this._workIndex * stride;
    		Quaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );
    		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );
    	},
    	_lerp: function ( buffer, dstOffset, srcOffset, t, stride ) {
    		const s = 1 - t;
    		for ( let i = 0; i !== stride; ++ i ) {
    			const j = dstOffset + i;
    			buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;
    		}
    	},
    	_lerpAdditive: function ( buffer, dstOffset, srcOffset, t, stride ) {
    		for ( let i = 0; i !== stride; ++ i ) {
    			const j = dstOffset + i;
    			buffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;
    		}
    	}
    } );
    const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
    const _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );
    const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
    const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\.', '' ) + ']';
    const _directoryRe = /((?:WC+[\/:])*)/.source.replace( 'WC', _wordChar );
    const _nodeRe = /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );
    const _objectRe = /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace( 'WC', _wordChar );
    const _propertyRe = /\.(WC+)(?:\[(.+)\])?/.source.replace( 'WC', _wordChar );
    const _trackRe = new RegExp( ''
    	+ '^'
    	+ _directoryRe
    	+ _nodeRe
    	+ _objectRe
    	+ _propertyRe
    	+ '$'
    );
    const _supportedObjectNames = [ 'material', 'materials', 'bones' ];
    function Composite( targetGroup, path, optionalParsedPath ) {
    	const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );
    	this._targetGroup = targetGroup;
    	this._bindings = targetGroup.subscribe_( path, parsedPath );
    }
    Object.assign( Composite.prototype, {
    	getValue: function ( array, offset ) {
    		this.bind();
    		const firstValidIndex = this._targetGroup.nCachedObjects_,
    			binding = this._bindings[ firstValidIndex ];
    		if ( binding !== undefined ) binding.getValue( array, offset );
    	},
    	setValue: function ( array, offset ) {
    		const bindings = this._bindings;
    		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
    			bindings[ i ].setValue( array, offset );
    		}
    	},
    	bind: function () {
    		const bindings = this._bindings;
    		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
    			bindings[ i ].bind();
    		}
    	},
    	unbind: function () {
    		const bindings = this._bindings;
    		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
    			bindings[ i ].unbind();
    		}
    	}
    } );
    function PropertyBinding( rootNode, path, parsedPath ) {
    	this.path = path;
    	this.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );
    	this.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName ) || rootNode;
    	this.rootNode = rootNode;
    }
    Object.assign( PropertyBinding, {
    	Composite: Composite,
    	create: function ( root, path, parsedPath ) {
    		if ( ! ( root && root.isAnimationObjectGroup ) ) {
    			return new PropertyBinding( root, path, parsedPath );
    		} else {
    			return new PropertyBinding.Composite( root, path, parsedPath );
    		}
    	},
    	sanitizeNodeName: function ( name ) {
    		return name.replace( /\s/g, '_' ).replace( _reservedRe, '' );
    	},
    	parseTrackName: function ( trackName ) {
    		const matches = _trackRe.exec( trackName );
    		if ( ! matches ) {
    			throw new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );
    		}
    		const results = {
    			nodeName: matches[ 2 ],
    			objectName: matches[ 3 ],
    			objectIndex: matches[ 4 ],
    			propertyName: matches[ 5 ],
    			propertyIndex: matches[ 6 ]
    		};
    		const lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );
    		if ( lastDot !== undefined && lastDot !== - 1 ) {
    			const objectName = results.nodeName.substring( lastDot + 1 );
    			if ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {
    				results.nodeName = results.nodeName.substring( 0, lastDot );
    				results.objectName = objectName;
    			}
    		}
    		if ( results.propertyName === null || results.propertyName.length === 0 ) {
    			throw new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );
    		}
    		return results;
    	},
    	findNode: function ( root, nodeName ) {
    		if ( ! nodeName || nodeName === "" || nodeName === "." || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {
    			return root;
    		}
    		if ( root.skeleton ) {
    			const bone = root.skeleton.getBoneByName( nodeName );
    			if ( bone !== undefined ) {
    				return bone;
    			}
    		}
    		if ( root.children ) {
    			const searchNodeSubtree = function ( children ) {
    				for ( let i = 0; i < children.length; i ++ ) {
    					const childNode = children[ i ];
    					if ( childNode.name === nodeName || childNode.uuid === nodeName ) {
    						return childNode;
    					}
    					const result = searchNodeSubtree( childNode.children );
    					if ( result ) return result;
    				}
    				return null;
    			};
    			const subTreeNode = searchNodeSubtree( root.children );
    			if ( subTreeNode ) {
    				return subTreeNode;
    			}
    		}
    		return null;
    	}
    } );
    Object.assign( PropertyBinding.prototype, {
    	_getValue_unavailable: function () {},
    	_setValue_unavailable: function () {},
    	BindingType: {
    		Direct: 0,
    		EntireArray: 1,
    		ArrayElement: 2,
    		HasFromToArray: 3
    	},
    	Versioning: {
    		None: 0,
    		NeedsUpdate: 1,
    		MatrixWorldNeedsUpdate: 2
    	},
    	GetterByBindingType: [
    		function getValue_direct( buffer, offset ) {
    			buffer[ offset ] = this.node[ this.propertyName ];
    		},
    		function getValue_array( buffer, offset ) {
    			const source = this.resolvedProperty;
    			for ( let i = 0, n = source.length; i !== n; ++ i ) {
    				buffer[ offset ++ ] = source[ i ];
    			}
    		},
    		function getValue_arrayElement( buffer, offset ) {
    			buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];
    		},
    		function getValue_toArray( buffer, offset ) {
    			this.resolvedProperty.toArray( buffer, offset );
    		}
    	],
    	SetterByBindingTypeAndVersioning: [
    		[
    			function setValue_direct( buffer, offset ) {
    				this.targetObject[ this.propertyName ] = buffer[ offset ];
    			},
    			function setValue_direct_setNeedsUpdate( buffer, offset ) {
    				this.targetObject[ this.propertyName ] = buffer[ offset ];
    				this.targetObject.needsUpdate = true;
    			},
    			function setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {
    				this.targetObject[ this.propertyName ] = buffer[ offset ];
    				this.targetObject.matrixWorldNeedsUpdate = true;
    			}
    		], [
    			function setValue_array( buffer, offset ) {
    				const dest = this.resolvedProperty;
    				for ( let i = 0, n = dest.length; i !== n; ++ i ) {
    					dest[ i ] = buffer[ offset ++ ];
    				}
    			},
    			function setValue_array_setNeedsUpdate( buffer, offset ) {
    				const dest = this.resolvedProperty;
    				for ( let i = 0, n = dest.length; i !== n; ++ i ) {
    					dest[ i ] = buffer[ offset ++ ];
    				}
    				this.targetObject.needsUpdate = true;
    			},
    			function setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {
    				const dest = this.resolvedProperty;
    				for ( let i = 0, n = dest.length; i !== n; ++ i ) {
    					dest[ i ] = buffer[ offset ++ ];
    				}
    				this.targetObject.matrixWorldNeedsUpdate = true;
    			}
    		], [
    			function setValue_arrayElement( buffer, offset ) {
    				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
    			},
    			function setValue_arrayElement_setNeedsUpdate( buffer, offset ) {
    				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
    				this.targetObject.needsUpdate = true;
    			},
    			function setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {
    				this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
    				this.targetObject.matrixWorldNeedsUpdate = true;
    			}
    		], [
    			function setValue_fromArray( buffer, offset ) {
    				this.resolvedProperty.fromArray( buffer, offset );
    			},
    			function setValue_fromArray_setNeedsUpdate( buffer, offset ) {
    				this.resolvedProperty.fromArray( buffer, offset );
    				this.targetObject.needsUpdate = true;
    			},
    			function setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {
    				this.resolvedProperty.fromArray( buffer, offset );
    				this.targetObject.matrixWorldNeedsUpdate = true;
    			}
    		]
    	],
    	getValue: function getValue_unbound( targetArray, offset ) {
    		this.bind();
    		this.getValue( targetArray, offset );
    	},
    	setValue: function getValue_unbound( sourceArray, offset ) {
    		this.bind();
    		this.setValue( sourceArray, offset );
    	},
    	bind: function () {
    		let targetObject = this.node;
    		const parsedPath = this.parsedPath;
    		const objectName = parsedPath.objectName;
    		const propertyName = parsedPath.propertyName;
    		let propertyIndex = parsedPath.propertyIndex;
    		if ( ! targetObject ) {
    			targetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName ) || this.rootNode;
    			this.node = targetObject;
    		}
    		this.getValue = this._getValue_unavailable;
    		this.setValue = this._setValue_unavailable;
    		if ( ! targetObject ) {
    			console.error( 'THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.' );
    			return;
    		}
    		if ( objectName ) {
    			let objectIndex = parsedPath.objectIndex;
    			switch ( objectName ) {
    				case 'materials':
    					if ( ! targetObject.material ) {
    						console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
    						return;
    					}
    					if ( ! targetObject.material.materials ) {
    						console.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );
    						return;
    					}
    					targetObject = targetObject.material.materials;
    					break;
    				case 'bones':
    					if ( ! targetObject.skeleton ) {
    						console.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );
    						return;
    					}
    					targetObject = targetObject.skeleton.bones;
    					for ( let i = 0; i < targetObject.length; i ++ ) {
    						if ( targetObject[ i ].name === objectIndex ) {
    							objectIndex = i;
    							break;
    						}
    					}
    					break;
    				default:
    					if ( targetObject[ objectName ] === undefined ) {
    						console.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );
    						return;
    					}
    					targetObject = targetObject[ objectName ];
    			}
    			if ( objectIndex !== undefined ) {
    				if ( targetObject[ objectIndex ] === undefined ) {
    					console.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );
    					return;
    				}
    				targetObject = targetObject[ objectIndex ];
    			}
    		}
    		const nodeProperty = targetObject[ propertyName ];
    		if ( nodeProperty === undefined ) {
    			const nodeName = parsedPath.nodeName;
    			console.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +
    				'.' + propertyName + ' but it wasn\'t found.', targetObject );
    			return;
    		}
    		let versioning = this.Versioning.None;
    		this.targetObject = targetObject;
    		if ( targetObject.needsUpdate !== undefined ) {
    			versioning = this.Versioning.NeedsUpdate;
    		} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) {
    			versioning = this.Versioning.MatrixWorldNeedsUpdate;
    		}
    		let bindingType = this.BindingType.Direct;
    		if ( propertyIndex !== undefined ) {
    			if ( propertyName === "morphTargetInfluences" ) {
    				if ( ! targetObject.geometry ) {
    					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );
    					return;
    				}
    				if ( targetObject.geometry.isBufferGeometry ) {
    					if ( ! targetObject.geometry.morphAttributes ) {
    						console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );
    						return;
    					}
    					if ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {
    						propertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];
    					}
    				} else {
    					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this );
    					return;
    				}
    			}
    			bindingType = this.BindingType.ArrayElement;
    			this.resolvedProperty = nodeProperty;
    			this.propertyIndex = propertyIndex;
    		} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {
    			bindingType = this.BindingType.HasFromToArray;
    			this.resolvedProperty = nodeProperty;
    		} else if ( Array.isArray( nodeProperty ) ) {
    			bindingType = this.BindingType.EntireArray;
    			this.resolvedProperty = nodeProperty;
    		} else {
    			this.propertyName = propertyName;
    		}
    		this.getValue = this.GetterByBindingType[ bindingType ];
    		this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];
    	},
    	unbind: function () {
    		this.node = null;
    		this.getValue = this._getValue_unbound;
    		this.setValue = this._setValue_unbound;
    	}
    } );
    Object.assign( PropertyBinding.prototype, {
    	_getValue_unbound: PropertyBinding.prototype.getValue,
    	_setValue_unbound: PropertyBinding.prototype.setValue,
    } );
    function AnimationObjectGroup() {
    	this.uuid = MathUtils.generateUUID();
    	this._objects = Array.prototype.slice.call( arguments );
    	this.nCachedObjects_ = 0;
    	const indices = {};
    	this._indicesByUUID = indices;
    	for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
    		indices[ arguments[ i ].uuid ] = i;
    	}
    	this._paths = [];
    	this._parsedPaths = [];
    	this._bindings = [];
    	this._bindingsIndicesByPath = {};
    	const scope = this;
    	this.stats = {
    		objects: {
    			get total() {
    				return scope._objects.length;
    			},
    			get inUse() {
    				return this.total - scope.nCachedObjects_;
    			}
    		},
    		get bindingsPerObject() {
    			return scope._bindings.length;
    		}
    	};
    }
    Object.assign( AnimationObjectGroup.prototype, {
    	isAnimationObjectGroup: true,
    	add: function () {
    		const objects = this._objects,
    			indicesByUUID = this._indicesByUUID,
    			paths = this._paths,
    			parsedPaths = this._parsedPaths,
    			bindings = this._bindings,
    			nBindings = bindings.length;
    		let knownObject = undefined,
    			nObjects = objects.length,
    			nCachedObjects = this.nCachedObjects_;
    		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
    			const object = arguments[ i ],
    				uuid = object.uuid;
    			let index = indicesByUUID[ uuid ];
    			if ( index === undefined ) {
    				index = nObjects ++;
    				indicesByUUID[ uuid ] = index;
    				objects.push( object );
    				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
    					bindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );
    				}
    			} else if ( index < nCachedObjects ) {
    				knownObject = objects[ index ];
    				const firstActiveIndex = -- nCachedObjects,
    					lastCachedObject = objects[ firstActiveIndex ];
    				indicesByUUID[ lastCachedObject.uuid ] = index;
    				objects[ index ] = lastCachedObject;
    				indicesByUUID[ uuid ] = firstActiveIndex;
    				objects[ firstActiveIndex ] = object;
    				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
    					const bindingsForPath = bindings[ j ],
    						lastCached = bindingsForPath[ firstActiveIndex ];
    					let binding = bindingsForPath[ index ];
    					bindingsForPath[ index ] = lastCached;
    					if ( binding === undefined ) {
    						binding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );
    					}
    					bindingsForPath[ firstActiveIndex ] = binding;
    				}
    			} else if ( objects[ index ] !== knownObject ) {
    				console.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +
    					'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );
    			}
    		}
    		this.nCachedObjects_ = nCachedObjects;
    	},
    	remove: function () {
    		const objects = this._objects,
    			indicesByUUID = this._indicesByUUID,
    			bindings = this._bindings,
    			nBindings = bindings.length;
    		let nCachedObjects = this.nCachedObjects_;
    		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
    			const object = arguments[ i ],
    				uuid = object.uuid,
    				index = indicesByUUID[ uuid ];
    			if ( index !== undefined && index >= nCachedObjects ) {
    				const lastCachedIndex = nCachedObjects ++,
    					firstActiveObject = objects[ lastCachedIndex ];
    				indicesByUUID[ firstActiveObject.uuid ] = index;
    				objects[ index ] = firstActiveObject;
    				indicesByUUID[ uuid ] = lastCachedIndex;
    				objects[ lastCachedIndex ] = object;
    				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
    					const bindingsForPath = bindings[ j ],
    						firstActive = bindingsForPath[ lastCachedIndex ],
    						binding = bindingsForPath[ index ];
    					bindingsForPath[ index ] = firstActive;
    					bindingsForPath[ lastCachedIndex ] = binding;
    				}
    			}
    		}
    		this.nCachedObjects_ = nCachedObjects;
    	},
    	uncache: function () {
    		const objects = this._objects,
    			indicesByUUID = this._indicesByUUID,
    			bindings = this._bindings,
    			nBindings = bindings.length;
    		let nCachedObjects = this.nCachedObjects_,
    			nObjects = objects.length;
    		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
    			const object = arguments[ i ],
    				uuid = object.uuid,
    				index = indicesByUUID[ uuid ];
    			if ( index !== undefined ) {
    				delete indicesByUUID[ uuid ];
    				if ( index < nCachedObjects ) {
    					const firstActiveIndex = -- nCachedObjects,
    						lastCachedObject = objects[ firstActiveIndex ],
    						lastIndex = -- nObjects,
    						lastObject = objects[ lastIndex ];
    					indicesByUUID[ lastCachedObject.uuid ] = index;
    					objects[ index ] = lastCachedObject;
    					indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
    					objects[ firstActiveIndex ] = lastObject;
    					objects.pop();
    					for ( let j = 0, m = nBindings; j !== m; ++ j ) {
    						const bindingsForPath = bindings[ j ],
    							lastCached = bindingsForPath[ firstActiveIndex ],
    							last = bindingsForPath[ lastIndex ];
    						bindingsForPath[ index ] = lastCached;
    						bindingsForPath[ firstActiveIndex ] = last;
    						bindingsForPath.pop();
    					}
    				} else {
    					const lastIndex = -- nObjects,
    						lastObject = objects[ lastIndex ];
    					indicesByUUID[ lastObject.uuid ] = index;
    					objects[ index ] = lastObject;
    					objects.pop();
    					for ( let j = 0, m = nBindings; j !== m; ++ j ) {
    						const bindingsForPath = bindings[ j ];
    						bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
    						bindingsForPath.pop();
    					}
    				}
    			}
    		}
    		this.nCachedObjects_ = nCachedObjects;
    	},
    	subscribe_: function ( path, parsedPath ) {
    		const indicesByPath = this._bindingsIndicesByPath;
    		let index = indicesByPath[ path ];
    		const bindings = this._bindings;
    		if ( index !== undefined ) return bindings[ index ];
    		const paths = this._paths,
    			parsedPaths = this._parsedPaths,
    			objects = this._objects,
    			nObjects = objects.length,
    			nCachedObjects = this.nCachedObjects_,
    			bindingsForPath = new Array( nObjects );
    		index = bindings.length;
    		indicesByPath[ path ] = index;
    		paths.push( path );
    		parsedPaths.push( parsedPath );
    		bindings.push( bindingsForPath );
    		for ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {
    			const object = objects[ i ];
    			bindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );
    		}
    		return bindingsForPath;
    	},
    	unsubscribe_: function ( path ) {
    		const indicesByPath = this._bindingsIndicesByPath,
    			index = indicesByPath[ path ];
    		if ( index !== undefined ) {
    			const paths = this._paths,
    				parsedPaths = this._parsedPaths,
    				bindings = this._bindings,
    				lastBindingsIndex = bindings.length - 1,
    				lastBindings = bindings[ lastBindingsIndex ],
    				lastBindingsPath = path[ lastBindingsIndex ];
    			indicesByPath[ lastBindingsPath ] = index;
    			bindings[ index ] = lastBindings;
    			bindings.pop();
    			parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
    			parsedPaths.pop();
    			paths[ index ] = paths[ lastBindingsIndex ];
    			paths.pop();
    		}
    	}
    } );
    class AnimationAction {
    	constructor( mixer, clip, localRoot, blendMode ) {
    		this._mixer = mixer;
    		this._clip = clip;
    		this._localRoot = localRoot || null;
    		this.blendMode = blendMode || clip.blendMode;
    		const tracks = clip.tracks,
    			nTracks = tracks.length,
    			interpolants = new Array( nTracks );
    		const interpolantSettings = {
    			endingStart: ZeroCurvatureEnding,
    			endingEnd: ZeroCurvatureEnding
    		};
    		for ( let i = 0; i !== nTracks; ++ i ) {
    			const interpolant = tracks[ i ].createInterpolant( null );
    			interpolants[ i ] = interpolant;
    			interpolant.settings = interpolantSettings;
    		}
    		this._interpolantSettings = interpolantSettings;
    		this._interpolants = interpolants;
    		this._propertyBindings = new Array( nTracks );
    		this._cacheIndex = null;
    		this._byClipCacheIndex = null;
    		this._timeScaleInterpolant = null;
    		this._weightInterpolant = null;
    		this.loop = LoopRepeat;
    		this._loopCount = - 1;
    		this._startTime = null;
    		this.time = 0;
    		this.timeScale = 1;
    		this._effectiveTimeScale = 1;
    		this.weight = 1;
    		this._effectiveWeight = 1;
    		this.repetitions = Infinity;
    		this.paused = false;
    		this.enabled = true;
    		this.clampWhenFinished = false;
    		this.zeroSlopeAtStart = true;
    		this.zeroSlopeAtEnd = true;
    	}
    	play() {
    		this._mixer._activateAction( this );
    		return this;
    	}
    	stop() {
    		this._mixer._deactivateAction( this );
    		return this.reset();
    	}
    	reset() {
    		this.paused = false;
    		this.enabled = true;
    		this.time = 0;
    		this._loopCount = - 1;
    		this._startTime = null;
    		return this.stopFading().stopWarping();
    	}
    	isRunning() {
    		return this.enabled && ! this.paused && this.timeScale !== 0 &&
    			this._startTime === null && this._mixer._isActiveAction( this );
    	}
    	isScheduled() {
    		return this._mixer._isActiveAction( this );
    	}
    	startAt( time ) {
    		this._startTime = time;
    		return this;
    	}
    	setLoop( mode, repetitions ) {
    		this.loop = mode;
    		this.repetitions = repetitions;
    		return this;
    	}
    	setEffectiveWeight( weight ) {
    		this.weight = weight;
    		this._effectiveWeight = this.enabled ? weight : 0;
    		return this.stopFading();
    	}
    	getEffectiveWeight() {
    		return this._effectiveWeight;
    	}
    	fadeIn( duration ) {
    		return this._scheduleFading( duration, 0, 1 );
    	}
    	fadeOut( duration ) {
    		return this._scheduleFading( duration, 1, 0 );
    	}
    	crossFadeFrom( fadeOutAction, duration, warp ) {
    		fadeOutAction.fadeOut( duration );
    		this.fadeIn( duration );
    		if ( warp ) {
    			const fadeInDuration = this._clip.duration,
    				fadeOutDuration = fadeOutAction._clip.duration,
    				startEndRatio = fadeOutDuration / fadeInDuration,
    				endStartRatio = fadeInDuration / fadeOutDuration;
    			fadeOutAction.warp( 1.0, startEndRatio, duration );
    			this.warp( endStartRatio, 1.0, duration );
    		}
    		return this;
    	}
    	crossFadeTo( fadeInAction, duration, warp ) {
    		return fadeInAction.crossFadeFrom( this, duration, warp );
    	}
    	stopFading() {
    		const weightInterpolant = this._weightInterpolant;
    		if ( weightInterpolant !== null ) {
    			this._weightInterpolant = null;
    			this._mixer._takeBackControlInterpolant( weightInterpolant );
    		}
    		return this;
    	}
    	setEffectiveTimeScale( timeScale ) {
    		this.timeScale = timeScale;
    		this._effectiveTimeScale = this.paused ? 0 : timeScale;
    		return this.stopWarping();
    	}
    	getEffectiveTimeScale() {
    		return this._effectiveTimeScale;
    	}
    	setDuration( duration ) {
    		this.timeScale = this._clip.duration / duration;
    		return this.stopWarping();
    	}
    	syncWith( action ) {
    		this.time = action.time;
    		this.timeScale = action.timeScale;
    		return this.stopWarping();
    	}
    	halt( duration ) {
    		return this.warp( this._effectiveTimeScale, 0, duration );
    	}
    	warp( startTimeScale, endTimeScale, duration ) {
    		const mixer = this._mixer,
    			now = mixer.time,
    			timeScale = this.timeScale;
    		let interpolant = this._timeScaleInterpolant;
    		if ( interpolant === null ) {
    			interpolant = mixer._lendControlInterpolant();
    			this._timeScaleInterpolant = interpolant;
    		}
    		const times = interpolant.parameterPositions,
    			values = interpolant.sampleValues;
    		times[ 0 ] = now;
    		times[ 1 ] = now + duration;
    		values[ 0 ] = startTimeScale / timeScale;
    		values[ 1 ] = endTimeScale / timeScale;
    		return this;
    	}
    	stopWarping() {
    		const timeScaleInterpolant = this._timeScaleInterpolant;
    		if ( timeScaleInterpolant !== null ) {
    			this._timeScaleInterpolant = null;
    			this._mixer._takeBackControlInterpolant( timeScaleInterpolant );
    		}
    		return this;
    	}
    	getMixer() {
    		return this._mixer;
    	}
    	getClip() {
    		return this._clip;
    	}
    	getRoot() {
    		return this._localRoot || this._mixer._root;
    	}
    	_update( time, deltaTime, timeDirection, accuIndex ) {
    		if ( ! this.enabled ) {
    			this._updateWeight( time );
    			return;
    		}
    		const startTime = this._startTime;
    		if ( startTime !== null ) {
    			const timeRunning = ( time - startTime ) * timeDirection;
    			if ( timeRunning < 0 || timeDirection === 0 ) {
    				return;
    			}
    			this._startTime = null;
    			deltaTime = timeDirection * timeRunning;
    		}
    		deltaTime *= this._updateTimeScale( time );
    		const clipTime = this._updateTime( deltaTime );
    		const weight = this._updateWeight( time );
    		if ( weight > 0 ) {
    			const interpolants = this._interpolants;
    			const propertyMixers = this._propertyBindings;
    			switch ( this.blendMode ) {
    				case AdditiveAnimationBlendMode:
    					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {
    						interpolants[ j ].evaluate( clipTime );
    						propertyMixers[ j ].accumulateAdditive( weight );
    					}
    					break;
    				case NormalAnimationBlendMode:
    				default:
    					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {
    						interpolants[ j ].evaluate( clipTime );
    						propertyMixers[ j ].accumulate( accuIndex, weight );
    					}
    			}
    		}
    	}
    	_updateWeight( time ) {
    		let weight = 0;
    		if ( this.enabled ) {
    			weight = this.weight;
    			const interpolant = this._weightInterpolant;
    			if ( interpolant !== null ) {
    				const interpolantValue = interpolant.evaluate( time )[ 0 ];
    				weight *= interpolantValue;
    				if ( time > interpolant.parameterPositions[ 1 ] ) {
    					this.stopFading();
    					if ( interpolantValue === 0 ) {
    						this.enabled = false;
    					}
    				}
    			}
    		}
    		this._effectiveWeight = weight;
    		return weight;
    	}
    	_updateTimeScale( time ) {
    		let timeScale = 0;
    		if ( ! this.paused ) {
    			timeScale = this.timeScale;
    			const interpolant = this._timeScaleInterpolant;
    			if ( interpolant !== null ) {
    				const interpolantValue = interpolant.evaluate( time )[ 0 ];
    				timeScale *= interpolantValue;
    				if ( time > interpolant.parameterPositions[ 1 ] ) {
    					this.stopWarping();
    					if ( timeScale === 0 ) {
    						this.paused = true;
    					} else {
    						this.timeScale = timeScale;
    					}
    				}
    			}
    		}
    		this._effectiveTimeScale = timeScale;
    		return timeScale;
    	}
    	_updateTime( deltaTime ) {
    		const duration = this._clip.duration;
    		const loop = this.loop;
    		let time = this.time + deltaTime;
    		let loopCount = this._loopCount;
    		const pingPong = ( loop === LoopPingPong );
    		if ( deltaTime === 0 ) {
    			if ( loopCount === - 1 ) return time;
    			return ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;
    		}
    		if ( loop === LoopOnce ) {
    			if ( loopCount === - 1 ) {
    				this._loopCount = 0;
    				this._setEndings( true, true, false );
    			}
    			handle_stop: {
    				if ( time >= duration ) {
    					time = duration;
    				} else if ( time < 0 ) {
    					time = 0;
    				} else {
    					this.time = time;
    					break handle_stop;
    				}
    				if ( this.clampWhenFinished ) this.paused = true;
    				else this.enabled = false;
    				this.time = time;
    				this._mixer.dispatchEvent( {
    					type: 'finished', action: this,
    					direction: deltaTime < 0 ? - 1 : 1
    				} );
    			}
    		} else {
    			if ( loopCount === - 1 ) {
    				if ( deltaTime >= 0 ) {
    					loopCount = 0;
    					this._setEndings( true, this.repetitions === 0, pingPong );
    				} else {
    					this._setEndings( this.repetitions === 0, true, pingPong );
    				}
    			}
    			if ( time >= duration || time < 0 ) {
    				const loopDelta = Math.floor( time / duration );
    				time -= duration * loopDelta;
    				loopCount += Math.abs( loopDelta );
    				const pending = this.repetitions - loopCount;
    				if ( pending <= 0 ) {
    					if ( this.clampWhenFinished ) this.paused = true;
    					else this.enabled = false;
    					time = deltaTime > 0 ? duration : 0;
    					this.time = time;
    					this._mixer.dispatchEvent( {
    						type: 'finished', action: this,
    						direction: deltaTime > 0 ? 1 : - 1
    					} );
    				} else {
    					if ( pending === 1 ) {
    						const atStart = deltaTime < 0;
    						this._setEndings( atStart, ! atStart, pingPong );
    					} else {
    						this._setEndings( false, false, pingPong );
    					}
    					this._loopCount = loopCount;
    					this.time = time;
    					this._mixer.dispatchEvent( {
    						type: 'loop', action: this, loopDelta: loopDelta
    					} );
    				}
    			} else {
    				this.time = time;
    			}
    			if ( pingPong && ( loopCount & 1 ) === 1 ) {
    				return duration - time;
    			}
    		}
    		return time;
    	}
    	_setEndings( atStart, atEnd, pingPong ) {
    		const settings = this._interpolantSettings;
    		if ( pingPong ) {
    			settings.endingStart = ZeroSlopeEnding;
    			settings.endingEnd = ZeroSlopeEnding;
    		} else {
    			if ( atStart ) {
    				settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
    			} else {
    				settings.endingStart = WrapAroundEnding;
    			}
    			if ( atEnd ) {
    				settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
    			} else {
    				settings.endingEnd 	 = WrapAroundEnding;
    			}
    		}
    	}
    	_scheduleFading( duration, weightNow, weightThen ) {
    		const mixer = this._mixer, now = mixer.time;
    		let interpolant = this._weightInterpolant;
    		if ( interpolant === null ) {
    			interpolant = mixer._lendControlInterpolant();
    			this._weightInterpolant = interpolant;
    		}
    		const times = interpolant.parameterPositions,
    			values = interpolant.sampleValues;
    		times[ 0 ] = now;
    		values[ 0 ] = weightNow;
    		times[ 1 ] = now + duration;
    		values[ 1 ] = weightThen;
    		return this;
    	}
    }
    function AnimationMixer( root ) {
    	this._root = root;
    	this._initMemoryManager();
    	this._accuIndex = 0;
    	this.time = 0;
    	this.timeScale = 1.0;
    }
    AnimationMixer.prototype = Object.assign( Object.create( EventDispatcher.prototype ), {
    	constructor: AnimationMixer,
    	_bindAction: function ( action, prototypeAction ) {
    		const root = action._localRoot || this._root,
    			tracks = action._clip.tracks,
    			nTracks = tracks.length,
    			bindings = action._propertyBindings,
    			interpolants = action._interpolants,
    			rootUuid = root.uuid,
    			bindingsByRoot = this._bindingsByRootAndName;
    		let bindingsByName = bindingsByRoot[ rootUuid ];
    		if ( bindingsByName === undefined ) {
    			bindingsByName = {};
    			bindingsByRoot[ rootUuid ] = bindingsByName;
    		}
    		for ( let i = 0; i !== nTracks; ++ i ) {
    			const track = tracks[ i ],
    				trackName = track.name;
    			let binding = bindingsByName[ trackName ];
    			if ( binding !== undefined ) {
    				bindings[ i ] = binding;
    			} else {
    				binding = bindings[ i ];
    				if ( binding !== undefined ) {
    					if ( binding._cacheIndex === null ) {
    						++ binding.referenceCount;
    						this._addInactiveBinding( binding, rootUuid, trackName );
    					}
    					continue;
    				}
    				const path = prototypeAction && prototypeAction.
    					_propertyBindings[ i ].binding.parsedPath;
    				binding = new PropertyMixer(
    					PropertyBinding.create( root, trackName, path ),
    					track.ValueTypeName, track.getValueSize() );
    				++ binding.referenceCount;
    				this._addInactiveBinding( binding, rootUuid, trackName );
    				bindings[ i ] = binding;
    			}
    			interpolants[ i ].resultBuffer = binding.buffer;
    		}
    	},
    	_activateAction: function ( action ) {
    		if ( ! this._isActiveAction( action ) ) {
    			if ( action._cacheIndex === null ) {
    				const rootUuid = ( action._localRoot || this._root ).uuid,
    					clipUuid = action._clip.uuid,
    					actionsForClip = this._actionsByClip[ clipUuid ];
    				this._bindAction( action,
    					actionsForClip && actionsForClip.knownActions[ 0 ] );
    				this._addInactiveAction( action, clipUuid, rootUuid );
    			}
    			const bindings = action._propertyBindings;
    			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
    				const binding = bindings[ i ];
    				if ( binding.useCount ++ === 0 ) {
    					this._lendBinding( binding );
    					binding.saveOriginalState();
    				}
    			}
    			this._lendAction( action );
    		}
    	},
    	_deactivateAction: function ( action ) {
    		if ( this._isActiveAction( action ) ) {
    			const bindings = action._propertyBindings;
    			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
    				const binding = bindings[ i ];
    				if ( -- binding.useCount === 0 ) {
    					binding.restoreOriginalState();
    					this._takeBackBinding( binding );
    				}
    			}
    			this._takeBackAction( action );
    		}
    	},
    	_initMemoryManager: function () {
    		this._actions = [];
    		this._nActiveActions = 0;
    		this._actionsByClip = {};
    		this._bindings = [];
    		this._nActiveBindings = 0;
    		this._bindingsByRootAndName = {};
    		this._controlInterpolants = [];
    		this._nActiveControlInterpolants = 0;
    		const scope = this;
    		this.stats = {
    			actions: {
    				get total() {
    					return scope._actions.length;
    				},
    				get inUse() {
    					return scope._nActiveActions;
    				}
    			},
    			bindings: {
    				get total() {
    					return scope._bindings.length;
    				},
    				get inUse() {
    					return scope._nActiveBindings;
    				}
    			},
    			controlInterpolants: {
    				get total() {
    					return scope._controlInterpolants.length;
    				},
    				get inUse() {
    					return scope._nActiveControlInterpolants;
    				}
    			}
    		};
    	},
    	_isActiveAction: function ( action ) {
    		const index = action._cacheIndex;
    		return index !== null && index < this._nActiveActions;
    	},
    	_addInactiveAction: function ( action, clipUuid, rootUuid ) {
    		const actions = this._actions,
    			actionsByClip = this._actionsByClip;
    		let actionsForClip = actionsByClip[ clipUuid ];
    		if ( actionsForClip === undefined ) {
    			actionsForClip = {
    				knownActions: [ action ],
    				actionByRoot: {}
    			};
    			action._byClipCacheIndex = 0;
    			actionsByClip[ clipUuid ] = actionsForClip;
    		} else {
    			const knownActions = actionsForClip.knownActions;
    			action._byClipCacheIndex = knownActions.length;
    			knownActions.push( action );
    		}
    		action._cacheIndex = actions.length;
    		actions.push( action );
    		actionsForClip.actionByRoot[ rootUuid ] = action;
    	},
    	_removeInactiveAction: function ( action ) {
    		const actions = this._actions,
    			lastInactiveAction = actions[ actions.length - 1 ],
    			cacheIndex = action._cacheIndex;
    		lastInactiveAction._cacheIndex = cacheIndex;
    		actions[ cacheIndex ] = lastInactiveAction;
    		actions.pop();
    		action._cacheIndex = null;
    		const clipUuid = action._clip.uuid,
    			actionsByClip = this._actionsByClip,
    			actionsForClip = actionsByClip[ clipUuid ],
    			knownActionsForClip = actionsForClip.knownActions,
    			lastKnownAction =
    				knownActionsForClip[ knownActionsForClip.length - 1 ],
    			byClipCacheIndex = action._byClipCacheIndex;
    		lastKnownAction._byClipCacheIndex = byClipCacheIndex;
    		knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
    		knownActionsForClip.pop();
    		action._byClipCacheIndex = null;
    		const actionByRoot = actionsForClip.actionByRoot,
    			rootUuid = ( action._localRoot || this._root ).uuid;
    		delete actionByRoot[ rootUuid ];
    		if ( knownActionsForClip.length === 0 ) {
    			delete actionsByClip[ clipUuid ];
    		}
    		this._removeInactiveBindingsForAction( action );
    	},
    	_removeInactiveBindingsForAction: function ( action ) {
    		const bindings = action._propertyBindings;
    		for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
    			const binding = bindings[ i ];
    			if ( -- binding.referenceCount === 0 ) {
    				this._removeInactiveBinding( binding );
    			}
    		}
    	},
    	_lendAction: function ( action ) {
    		const actions = this._actions,
    			prevIndex = action._cacheIndex,
    			lastActiveIndex = this._nActiveActions ++,
    			firstInactiveAction = actions[ lastActiveIndex ];
    		action._cacheIndex = lastActiveIndex;
    		actions[ lastActiveIndex ] = action;
    		firstInactiveAction._cacheIndex = prevIndex;
    		actions[ prevIndex ] = firstInactiveAction;
    	},
    	_takeBackAction: function ( action ) {
    		const actions = this._actions,
    			prevIndex = action._cacheIndex,
    			firstInactiveIndex = -- this._nActiveActions,
    			lastActiveAction = actions[ firstInactiveIndex ];
    		action._cacheIndex = firstInactiveIndex;
    		actions[ firstInactiveIndex ] = action;
    		lastActiveAction._cacheIndex = prevIndex;
    		actions[ prevIndex ] = lastActiveAction;
    	},
    	_addInactiveBinding: function ( binding, rootUuid, trackName ) {
    		const bindingsByRoot = this._bindingsByRootAndName,
    			bindings = this._bindings;
    		let bindingByName = bindingsByRoot[ rootUuid ];
    		if ( bindingByName === undefined ) {
    			bindingByName = {};
    			bindingsByRoot[ rootUuid ] = bindingByName;
    		}
    		bindingByName[ trackName ] = binding;
    		binding._cacheIndex = bindings.length;
    		bindings.push( binding );
    	},
    	_removeInactiveBinding: function ( binding ) {
    		const bindings = this._bindings,
    			propBinding = binding.binding,
    			rootUuid = propBinding.rootNode.uuid,
    			trackName = propBinding.path,
    			bindingsByRoot = this._bindingsByRootAndName,
    			bindingByName = bindingsByRoot[ rootUuid ],
    			lastInactiveBinding = bindings[ bindings.length - 1 ],
    			cacheIndex = binding._cacheIndex;
    		lastInactiveBinding._cacheIndex = cacheIndex;
    		bindings[ cacheIndex ] = lastInactiveBinding;
    		bindings.pop();
    		delete bindingByName[ trackName ];
    		if ( Object.keys( bindingByName ).length === 0 ) {
    			delete bindingsByRoot[ rootUuid ];
    		}
    	},
    	_lendBinding: function ( binding ) {
    		const bindings = this._bindings,
    			prevIndex = binding._cacheIndex,
    			lastActiveIndex = this._nActiveBindings ++,
    			firstInactiveBinding = bindings[ lastActiveIndex ];
    		binding._cacheIndex = lastActiveIndex;
    		bindings[ lastActiveIndex ] = binding;
    		firstInactiveBinding._cacheIndex = prevIndex;
    		bindings[ prevIndex ] = firstInactiveBinding;
    	},
    	_takeBackBinding: function ( binding ) {
    		const bindings = this._bindings,
    			prevIndex = binding._cacheIndex,
    			firstInactiveIndex = -- this._nActiveBindings,
    			lastActiveBinding = bindings[ firstInactiveIndex ];
    		binding._cacheIndex = firstInactiveIndex;
    		bindings[ firstInactiveIndex ] = binding;
    		lastActiveBinding._cacheIndex = prevIndex;
    		bindings[ prevIndex ] = lastActiveBinding;
    	},
    	_lendControlInterpolant: function () {
    		const interpolants = this._controlInterpolants,
    			lastActiveIndex = this._nActiveControlInterpolants ++;
    		let interpolant = interpolants[ lastActiveIndex ];
    		if ( interpolant === undefined ) {
    			interpolant = new LinearInterpolant(
    				new Float32Array( 2 ), new Float32Array( 2 ),
    				1, this._controlInterpolantsResultBuffer );
    			interpolant.__cacheIndex = lastActiveIndex;
    			interpolants[ lastActiveIndex ] = interpolant;
    		}
    		return interpolant;
    	},
    	_takeBackControlInterpolant: function ( interpolant ) {
    		const interpolants = this._controlInterpolants,
    			prevIndex = interpolant.__cacheIndex,
    			firstInactiveIndex = -- this._nActiveControlInterpolants,
    			lastActiveInterpolant = interpolants[ firstInactiveIndex ];
    		interpolant.__cacheIndex = firstInactiveIndex;
    		interpolants[ firstInactiveIndex ] = interpolant;
    		lastActiveInterpolant.__cacheIndex = prevIndex;
    		interpolants[ prevIndex ] = lastActiveInterpolant;
    	},
    	_controlInterpolantsResultBuffer: new Float32Array( 1 ),
    	clipAction: function ( clip, optionalRoot, blendMode ) {
    		const root = optionalRoot || this._root,
    			rootUuid = root.uuid;
    		let clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;
    		const clipUuid = clipObject !== null ? clipObject.uuid : clip;
    		const actionsForClip = this._actionsByClip[ clipUuid ];
    		let prototypeAction = null;
    		if ( blendMode === undefined ) {
    			if ( clipObject !== null ) {
    				blendMode = clipObject.blendMode;
    			} else {
    				blendMode = NormalAnimationBlendMode;
    			}
    		}
    		if ( actionsForClip !== undefined ) {
    			const existingAction = actionsForClip.actionByRoot[ rootUuid ];
    			if ( existingAction !== undefined && existingAction.blendMode === blendMode ) {
    				return existingAction;
    			}
    			prototypeAction = actionsForClip.knownActions[ 0 ];
    			if ( clipObject === null )
    				clipObject = prototypeAction._clip;
    		}
    		if ( clipObject === null ) return null;
    		const newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );
    		this._bindAction( newAction, prototypeAction );
    		this._addInactiveAction( newAction, clipUuid, rootUuid );
    		return newAction;
    	},
    	existingAction: function ( clip, optionalRoot ) {
    		const root = optionalRoot || this._root,
    			rootUuid = root.uuid,
    			clipObject = typeof clip === 'string' ?
    				AnimationClip.findByName( root, clip ) : clip,
    			clipUuid = clipObject ? clipObject.uuid : clip,
    			actionsForClip = this._actionsByClip[ clipUuid ];
    		if ( actionsForClip !== undefined ) {
    			return actionsForClip.actionByRoot[ rootUuid ] || null;
    		}
    		return null;
    	},
    	stopAllAction: function () {
    		const actions = this._actions,
    			nActions = this._nActiveActions;
    		for ( let i = nActions - 1; i >= 0; -- i ) {
    			actions[ i ].stop();
    		}
    		return this;
    	},
    	update: function ( deltaTime ) {
    		deltaTime *= this.timeScale;
    		const actions = this._actions,
    			nActions = this._nActiveActions,
    			time = this.time += deltaTime,
    			timeDirection = Math.sign( deltaTime ),
    			accuIndex = this._accuIndex ^= 1;
    		for ( let i = 0; i !== nActions; ++ i ) {
    			const action = actions[ i ];
    			action._update( time, deltaTime, timeDirection, accuIndex );
    		}
    		const bindings = this._bindings,
    			nBindings = this._nActiveBindings;
    		for ( let i = 0; i !== nBindings; ++ i ) {
    			bindings[ i ].apply( accuIndex );
    		}
    		return this;
    	},
    	setTime: function ( timeInSeconds ) {
    		this.time = 0;
    		for ( let i = 0; i < this._actions.length; i ++ ) {
    			this._actions[ i ].time = 0;
    		}
    		return this.update( timeInSeconds );
    	},
    	getRoot: function () {
    		return this._root;
    	},
    	uncacheClip: function ( clip ) {
    		const actions = this._actions,
    			clipUuid = clip.uuid,
    			actionsByClip = this._actionsByClip,
    			actionsForClip = actionsByClip[ clipUuid ];
    		if ( actionsForClip !== undefined ) {
    			const actionsToRemove = actionsForClip.knownActions;
    			for ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {
    				const action = actionsToRemove[ i ];
    				this._deactivateAction( action );
    				const cacheIndex = action._cacheIndex,
    					lastInactiveAction = actions[ actions.length - 1 ];
    				action._cacheIndex = null;
    				action._byClipCacheIndex = null;
    				lastInactiveAction._cacheIndex = cacheIndex;
    				actions[ cacheIndex ] = lastInactiveAction;
    				actions.pop();
    				this._removeInactiveBindingsForAction( action );
    			}
    			delete actionsByClip[ clipUuid ];
    		}
    	},
    	uncacheRoot: function ( root ) {
    		const rootUuid = root.uuid,
    			actionsByClip = this._actionsByClip;
    		for ( const clipUuid in actionsByClip ) {
    			const actionByRoot = actionsByClip[ clipUuid ].actionByRoot,
    				action = actionByRoot[ rootUuid ];
    			if ( action !== undefined ) {
    				this._deactivateAction( action );
    				this._removeInactiveAction( action );
    			}
    		}
    		const bindingsByRoot = this._bindingsByRootAndName,
    			bindingByName = bindingsByRoot[ rootUuid ];
    		if ( bindingByName !== undefined ) {
    			for ( const trackName in bindingByName ) {
    				const binding = bindingByName[ trackName ];
    				binding.restoreOriginalState();
    				this._removeInactiveBinding( binding );
    			}
    		}
    	},
    	uncacheAction: function ( clip, optionalRoot ) {
    		const action = this.existingAction( clip, optionalRoot );
    		if ( action !== null ) {
    			this._deactivateAction( action );
    			this._removeInactiveAction( action );
    		}
    	}
    } );
    class Uniform {
    	constructor( value ) {
    		if ( typeof value === 'string' ) {
    			console.warn( 'THREE.Uniform: Type parameter is no longer needed.' );
    			value = arguments[ 1 ];
    		}
    		this.value = value;
    	}
    	clone() {
    		return new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );
    	}
    }
    function InstancedInterleavedBuffer( array, stride, meshPerAttribute ) {
    	InterleavedBuffer.call( this, array, stride );
    	this.meshPerAttribute = meshPerAttribute || 1;
    }
    InstancedInterleavedBuffer.prototype = Object.assign( Object.create( InterleavedBuffer.prototype ), {
    	constructor: InstancedInterleavedBuffer,
    	isInstancedInterleavedBuffer: true,
    	copy: function ( source ) {
    		InterleavedBuffer.prototype.copy.call( this, source );
    		this.meshPerAttribute = source.meshPerAttribute;
    		return this;
    	},
    	clone: function ( data ) {
    		const ib = InterleavedBuffer.prototype.clone.call( this, data );
    		ib.meshPerAttribute = this.meshPerAttribute;
    		return ib;
    	},
    	toJSON: function ( data ) {
    		const json = InterleavedBuffer.prototype.toJSON.call( this, data );
    		json.isInstancedInterleavedBuffer = true;
    		json.meshPerAttribute = this.meshPerAttribute;
    		return json;
    	}
    } );
    function GLBufferAttribute( buffer, type, itemSize, elementSize, count ) {
    	this.buffer = buffer;
    	this.type = type;
    	this.itemSize = itemSize;
    	this.elementSize = elementSize;
    	this.count = count;
    	this.version = 0;
    }
    Object.defineProperty( GLBufferAttribute.prototype, 'needsUpdate', {
    	set: function ( value ) {
    		if ( value === true ) this.version ++;
    	}
    } );
    Object.assign( GLBufferAttribute.prototype, {
    	isGLBufferAttribute: true,
    	setBuffer: function ( buffer ) {
    		this.buffer = buffer;
    		return this;
    	},
    	setType: function ( type, elementSize ) {
    		this.type = type;
    		this.elementSize = elementSize;
    		return this;
    	},
    	setItemSize: function ( itemSize ) {
    		this.itemSize = itemSize;
    		return this;
    	},
    	setCount: function ( count ) {
    		this.count = count;
    		return this;
    	},
    } );
    function Raycaster( origin, direction, near, far ) {
    	this.ray = new Ray( origin, direction );
    	this.near = near || 0;
    	this.far = far || Infinity;
    	this.camera = null;
    	this.layers = new Layers();
    	this.params = {
    		Mesh: {},
    		Line: { threshold: 1 },
    		LOD: {},
    		Points: { threshold: 1 },
    		Sprite: {}
    	};
    	Object.defineProperties( this.params, {
    		PointCloud: {
    			get: function () {
    				console.warn( 'THREE.Raycaster: params.PointCloud has been renamed to params.Points.' );
    				return this.Points;
    			}
    		}
    	} );
    }
    function ascSort( a, b ) {
    	return a.distance - b.distance;
    }
    function intersectObject( object, raycaster, intersects, recursive ) {
    	if ( object.layers.test( raycaster.layers ) ) {
    		object.raycast( raycaster, intersects );
    	}
    	if ( recursive === true ) {
    		const children = object.children;
    		for ( let i = 0, l = children.length; i < l; i ++ ) {
    			intersectObject( children[ i ], raycaster, intersects, true );
    		}
    	}
    }
    Object.assign( Raycaster.prototype, {
    	set: function ( origin, direction ) {
    		this.ray.set( origin, direction );
    	},
    	setFromCamera: function ( coords, camera ) {
    		if ( ( camera && camera.isPerspectiveCamera ) ) {
    			this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
    			this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
    			this.camera = camera;
    		} else if ( ( camera && camera.isOrthographicCamera ) ) {
    			this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera );
    			this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
    			this.camera = camera;
    		} else {
    			console.error( 'THREE.Raycaster: Unsupported camera type.' );
    		}
    	},
    	intersectObject: function ( object, recursive, optionalTarget ) {
    		const intersects = optionalTarget || [];
    		intersectObject( object, this, intersects, recursive );
    		intersects.sort( ascSort );
    		return intersects;
    	},
    	intersectObjects: function ( objects, recursive, optionalTarget ) {
    		const intersects = optionalTarget || [];
    		if ( Array.isArray( objects ) === false ) {
    			console.warn( 'THREE.Raycaster.intersectObjects: objects is not an Array.' );
    			return intersects;
    		}
    		for ( let i = 0, l = objects.length; i < l; i ++ ) {
    			intersectObject( objects[ i ], this, intersects, recursive );
    		}
    		intersects.sort( ascSort );
    		return intersects;
    	}
    } );
    class Spherical {
    	constructor( radius = 1, phi = 0, theta = 0 ) {
    		this.radius = radius;
    		this.phi = phi;
    		this.theta = theta;
    		return this;
    	}
    	set( radius, phi, theta ) {
    		this.radius = radius;
    		this.phi = phi;
    		this.theta = theta;
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( other ) {
    		this.radius = other.radius;
    		this.phi = other.phi;
    		this.theta = other.theta;
    		return this;
    	}
    	makeSafe() {
    		const EPS = 0.000001;
    		this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );
    		return this;
    	}
    	setFromVector3( v ) {
    		return this.setFromCartesianCoords( v.x, v.y, v.z );
    	}
    	setFromCartesianCoords( x, y, z ) {
    		this.radius = Math.sqrt( x * x + y * y + z * z );
    		if ( this.radius === 0 ) {
    			this.theta = 0;
    			this.phi = 0;
    		} else {
    			this.theta = Math.atan2( x, z );
    			this.phi = Math.acos( MathUtils.clamp( y / this.radius, - 1, 1 ) );
    		}
    		return this;
    	}
    }
    class Cylindrical {
    	constructor( radius, theta, y ) {
    		this.radius = ( radius !== undefined ) ? radius : 1.0;
    		this.theta = ( theta !== undefined ) ? theta : 0;
    		this.y = ( y !== undefined ) ? y : 0;
    		return this;
    	}
    	set( radius, theta, y ) {
    		this.radius = radius;
    		this.theta = theta;
    		this.y = y;
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( other ) {
    		this.radius = other.radius;
    		this.theta = other.theta;
    		this.y = other.y;
    		return this;
    	}
    	setFromVector3( v ) {
    		return this.setFromCartesianCoords( v.x, v.y, v.z );
    	}
    	setFromCartesianCoords( x, y, z ) {
    		this.radius = Math.sqrt( x * x + z * z );
    		this.theta = Math.atan2( x, z );
    		this.y = y;
    		return this;
    	}
    }
    const _vector$7 = new Vector2();
    class Box2 {
    	constructor( min, max ) {
    		Object.defineProperty( this, 'isBox2', { value: true } );
    		this.min = ( min !== undefined ) ? min : new Vector2( + Infinity, + Infinity );
    		this.max = ( max !== undefined ) ? max : new Vector2( - Infinity, - Infinity );
    	}
    	set( min, max ) {
    		this.min.copy( min );
    		this.max.copy( max );
    		return this;
    	}
    	setFromPoints( points ) {
    		this.makeEmpty();
    		for ( let i = 0, il = points.length; i < il; i ++ ) {
    			this.expandByPoint( points[ i ] );
    		}
    		return this;
    	}
    	setFromCenterAndSize( center, size ) {
    		const halfSize = _vector$7.copy( size ).multiplyScalar( 0.5 );
    		this.min.copy( center ).sub( halfSize );
    		this.max.copy( center ).add( halfSize );
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( box ) {
    		this.min.copy( box.min );
    		this.max.copy( box.max );
    		return this;
    	}
    	makeEmpty() {
    		this.min.x = this.min.y = + Infinity;
    		this.max.x = this.max.y = - Infinity;
    		return this;
    	}
    	isEmpty() {
    		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );
    	}
    	getCenter( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box2: .getCenter() target is now required' );
    			target = new Vector2();
    		}
    		return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
    	}
    	getSize( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box2: .getSize() target is now required' );
    			target = new Vector2();
    		}
    		return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );
    	}
    	expandByPoint( point ) {
    		this.min.min( point );
    		this.max.max( point );
    		return this;
    	}
    	expandByVector( vector ) {
    		this.min.sub( vector );
    		this.max.add( vector );
    		return this;
    	}
    	expandByScalar( scalar ) {
    		this.min.addScalar( - scalar );
    		this.max.addScalar( scalar );
    		return this;
    	}
    	containsPoint( point ) {
    		return point.x < this.min.x || point.x > this.max.x ||
    			point.y < this.min.y || point.y > this.max.y ? false : true;
    	}
    	containsBox( box ) {
    		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
    			this.min.y <= box.min.y && box.max.y <= this.max.y;
    	}
    	getParameter( point, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box2: .getParameter() target is now required' );
    			target = new Vector2();
    		}
    		return target.set(
    			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
    			( point.y - this.min.y ) / ( this.max.y - this.min.y )
    		);
    	}
    	intersectsBox( box ) {
    		return box.max.x < this.min.x || box.min.x > this.max.x ||
    			box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
    	}
    	clampPoint( point, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Box2: .clampPoint() target is now required' );
    			target = new Vector2();
    		}
    		return target.copy( point ).clamp( this.min, this.max );
    	}
    	distanceToPoint( point ) {
    		const clampedPoint = _vector$7.copy( point ).clamp( this.min, this.max );
    		return clampedPoint.sub( point ).length();
    	}
    	intersect( box ) {
    		this.min.max( box.min );
    		this.max.min( box.max );
    		return this;
    	}
    	union( box ) {
    		this.min.min( box.min );
    		this.max.max( box.max );
    		return this;
    	}
    	translate( offset ) {
    		this.min.add( offset );
    		this.max.add( offset );
    		return this;
    	}
    	equals( box ) {
    		return box.min.equals( this.min ) && box.max.equals( this.max );
    	}
    }
    const _startP = new Vector3();
    const _startEnd = new Vector3();
    class Line3 {
    	constructor( start, end ) {
    		this.start = ( start !== undefined ) ? start : new Vector3();
    		this.end = ( end !== undefined ) ? end : new Vector3();
    	}
    	set( start, end ) {
    		this.start.copy( start );
    		this.end.copy( end );
    		return this;
    	}
    	clone() {
    		return new this.constructor().copy( this );
    	}
    	copy( line ) {
    		this.start.copy( line.start );
    		this.end.copy( line.end );
    		return this;
    	}
    	getCenter( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Line3: .getCenter() target is now required' );
    			target = new Vector3();
    		}
    		return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );
    	}
    	delta( target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Line3: .delta() target is now required' );
    			target = new Vector3();
    		}
    		return target.subVectors( this.end, this.start );
    	}
    	distanceSq() {
    		return this.start.distanceToSquared( this.end );
    	}
    	distance() {
    		return this.start.distanceTo( this.end );
    	}
    	at( t, target ) {
    		if ( target === undefined ) {
    			console.warn( 'THREE.Line3: .at() target is now required' );
    			target = new Vector3();
    		}
    		return this.delta( target ).multiplyScalar( t ).add( this.start );
    	}
    	closestPointToPointParameter( point, clampToLine ) {
    		_startP.subVectors( point, this.start );
    		_startEnd.subVectors( this.end, this.start );
    		const startEnd2 = _startEnd.dot( _startEnd );
    		const startEnd_startP = _startEnd.dot( _startP );
    		let t = startEnd_startP / startEnd2;
    		if ( clampToLine ) {
    			t = MathUtils.clamp( t, 0, 1 );
    		}
    		return t;
    	}
    	closestPointToPoint( point, clampToLine, target ) {
    		const t = this.closestPointToPointParameter( point, clampToLine );
    		if ( target === undefined ) {
    			console.warn( 'THREE.Line3: .closestPointToPoint() target is now required' );
    			target = new Vector3();
    		}
    		return this.delta( target ).multiplyScalar( t ).add( this.start );
    	}
    	applyMatrix4( matrix ) {
    		this.start.applyMatrix4( matrix );
    		this.end.applyMatrix4( matrix );
    		return this;
    	}
    	equals( line ) {
    		return line.start.equals( this.start ) && line.end.equals( this.end );
    	}
    }
    function ImmediateRenderObject( material ) {
    	Object3D.call( this );
    	this.material = material;
    	this.render = function (  ) {};
    	this.hasPositions = false;
    	this.hasNormals = false;
    	this.hasColors = false;
    	this.hasUvs = false;
    	this.positionArray = null;
    	this.normalArray = null;
    	this.colorArray = null;
    	this.uvArray = null;
    	this.count = 0;
    }
    ImmediateRenderObject.prototype = Object.create( Object3D.prototype );
    ImmediateRenderObject.prototype.constructor = ImmediateRenderObject;
    ImmediateRenderObject.prototype.isImmediateRenderObject = true;
    const _vector$8 = new Vector3();
    class SpotLightHelper extends Object3D {
    	constructor( light, color ) {
    		super();
    		this.light = light;
    		this.light.updateMatrixWorld();
    		this.matrix = light.matrixWorld;
    		this.matrixAutoUpdate = false;
    		this.color = color;
    		const geometry = new BufferGeometry();
    		const positions = [
    			0, 0, 0, 	0, 0, 1,
    			0, 0, 0, 	1, 0, 1,
    			0, 0, 0,	- 1, 0, 1,
    			0, 0, 0, 	0, 1, 1,
    			0, 0, 0, 	0, - 1, 1
    		];
    		for ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {
    			const p1 = ( i / l ) * Math.PI * 2;
    			const p2 = ( j / l ) * Math.PI * 2;
    			positions.push(
    				Math.cos( p1 ), Math.sin( p1 ), 1,
    				Math.cos( p2 ), Math.sin( p2 ), 1
    			);
    		}
    		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
    		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );
    		this.cone = new LineSegments( geometry, material );
    		this.add( this.cone );
    		this.update();
    	}
    	dispose() {
    		this.cone.geometry.dispose();
    		this.cone.material.dispose();
    	}
    	update() {
    		this.light.updateMatrixWorld();
    		const coneLength = this.light.distance ? this.light.distance : 1000;
    		const coneWidth = coneLength * Math.tan( this.light.angle );
    		this.cone.scale.set( coneWidth, coneWidth, coneLength );
    		_vector$8.setFromMatrixPosition( this.light.target.matrixWorld );
    		this.cone.lookAt( _vector$8 );
    		if ( this.color !== undefined ) {
    			this.cone.material.color.set( this.color );
    		} else {
    			this.cone.material.color.copy( this.light.color );
    		}
    	}
    }
    const _vector$9 = new Vector3();
    const _boneMatrix = new Matrix4();
    const _matrixWorldInv = new Matrix4();
    class SkeletonHelper extends LineSegments {
    	constructor( object ) {
    		const bones = getBoneList( object );
    		const geometry = new BufferGeometry();
    		const vertices = [];
    		const colors = [];
    		const color1 = new Color( 0, 0, 1 );
    		const color2 = new Color( 0, 1, 0 );
    		for ( let i = 0; i < bones.length; i ++ ) {
    			const bone = bones[ i ];
    			if ( bone.parent && bone.parent.isBone ) {
    				vertices.push( 0, 0, 0 );
    				vertices.push( 0, 0, 0 );
    				colors.push( color1.r, color1.g, color1.b );
    				colors.push( color2.r, color2.g, color2.b );
    			}
    		}
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
    		const material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );
    		super( geometry, material );
    		this.type = 'SkeletonHelper';
    		this.isSkeletonHelper = true;
    		this.root = object;
    		this.bones = bones;
    		this.matrix = object.matrixWorld;
    		this.matrixAutoUpdate = false;
    	}
    	updateMatrixWorld( force ) {
    		const bones = this.bones;
    		const geometry = this.geometry;
    		const position = geometry.getAttribute( 'position' );
    		_matrixWorldInv.getInverse( this.root.matrixWorld );
    		for ( let i = 0, j = 0; i < bones.length; i ++ ) {
    			const bone = bones[ i ];
    			if ( bone.parent && bone.parent.isBone ) {
    				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );
    				_vector$9.setFromMatrixPosition( _boneMatrix );
    				position.setXYZ( j, _vector$9.x, _vector$9.y, _vector$9.z );
    				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );
    				_vector$9.setFromMatrixPosition( _boneMatrix );
    				position.setXYZ( j + 1, _vector$9.x, _vector$9.y, _vector$9.z );
    				j += 2;
    			}
    		}
    		geometry.getAttribute( 'position' ).needsUpdate = true;
    		super.updateMatrixWorld( force );
    	}
    }
    function getBoneList( object ) {
    	const boneList = [];
    	if ( object && object.isBone ) {
    		boneList.push( object );
    	}
    	for ( let i = 0; i < object.children.length; i ++ ) {
    		boneList.push.apply( boneList, getBoneList( object.children[ i ] ) );
    	}
    	return boneList;
    }
    class PointLightHelper extends Mesh {
    	constructor( light, sphereSize, color ) {
    		const geometry = new SphereBufferGeometry( sphereSize, 4, 2 );
    		const material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
    		super( geometry, material );
    		this.light = light;
    		this.light.updateMatrixWorld();
    		this.color = color;
    		this.type = 'PointLightHelper';
    		this.matrix = this.light.matrixWorld;
    		this.matrixAutoUpdate = false;
    		this.update();
    	}
    	dispose() {
    		this.geometry.dispose();
    		this.material.dispose();
    	}
    	update() {
    		if ( this.color !== undefined ) {
    			this.material.color.set( this.color );
    		} else {
    			this.material.color.copy( this.light.color );
    		}
    	}
    }
    const _vector$a = new Vector3();
    const _color1 = new Color();
    const _color2 = new Color();
    class HemisphereLightHelper extends Object3D {
    	constructor( light, size, color ) {
    		super();
    		this.light = light;
    		this.light.updateMatrixWorld();
    		this.matrix = light.matrixWorld;
    		this.matrixAutoUpdate = false;
    		this.color = color;
    		const geometry = new OctahedronBufferGeometry( size );
    		geometry.rotateY( Math.PI * 0.5 );
    		this.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
    		if ( this.color === undefined ) this.material.vertexColors = true;
    		const position = geometry.getAttribute( 'position' );
    		const colors = new Float32Array( position.count * 3 );
    		geometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );
    		this.add( new Mesh( geometry, this.material ) );
    		this.update();
    	}
    	dispose() {
    		this.children[ 0 ].geometry.dispose();
    		this.children[ 0 ].material.dispose();
    	}
    	update() {
    		const mesh = this.children[ 0 ];
    		if ( this.color !== undefined ) {
    			this.material.color.set( this.color );
    		} else {
    			const colors = mesh.geometry.getAttribute( 'color' );
    			_color1.copy( this.light.color );
    			_color2.copy( this.light.groundColor );
    			for ( let i = 0, l = colors.count; i < l; i ++ ) {
    				const color = ( i < ( l / 2 ) ) ? _color1 : _color2;
    				colors.setXYZ( i, color.r, color.g, color.b );
    			}
    			colors.needsUpdate = true;
    		}
    		mesh.lookAt( _vector$a.setFromMatrixPosition( this.light.matrixWorld ).negate() );
    	}
    }
    class GridHelper extends LineSegments {
    	constructor( size, divisions, color1, color2 ) {
    		size = size || 10;
    		divisions = divisions || 10;
    		color1 = new Color( color1 !== undefined ? color1 : 0x444444 );
    		color2 = new Color( color2 !== undefined ? color2 : 0x888888 );
    		const center = divisions / 2;
    		const step = size / divisions;
    		const halfSize = size / 2;
    		const vertices = [], colors = [];
    		for ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {
    			vertices.push( - halfSize, 0, k, halfSize, 0, k );
    			vertices.push( k, 0, - halfSize, k, 0, halfSize );
    			const color = i === center ? color1 : color2;
    			color.toArray( colors, j ); j += 3;
    			color.toArray( colors, j ); j += 3;
    			color.toArray( colors, j ); j += 3;
    			color.toArray( colors, j ); j += 3;
    		}
    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
    		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
    		super( geometry, material );
    		this.type = 'GridHelper';
    	}
    }
    class PolarGridHelper extends LineSegments {
    	constructor( radius, radials, circles, divisions, color1, color2 ) {
    		radius = radius || 10;
    		radials = radials || 16;
    		circles = circles || 8;
    		divisions = divisions || 64;
    		color1 = new Color( color1 !== undefined ? color1 : 0x444444 );
    		color2 = new Color( color2 !== undefined ? color2 : 0x888888 );
    		const vertices = [];
    		const colors = [];
    		for ( let i = 0; i <= radials; i ++ ) {
    			const v = ( i / radials ) * ( Math.PI * 2 );
    			const x = Math.sin( v ) * radius;
    			const z = Math.cos( v ) * radius;
    			vertices.push( 0, 0, 0 );
    			vertices.push( x, 0, z );
    			const color = ( i & 1 ) ? color1 : color2;
    			colors.push( color.r, color.g, color.b );
    			colors.push( color.r, color.g, color.b );
    		}
    		for ( let i = 0; i <= circles; i ++ ) {
    			const color = ( i & 1 ) ? color1 : color2;
    			const r = radius - ( radius / circles * i );
    			for ( let j = 0; j < divisions; j ++ ) {
    				let v = ( j / divisions ) * ( Math.PI * 2 );
    				let x = Math.sin( v ) * r;
    				let z = Math.cos( v ) * r;
    				vertices.push( x, 0, z );
    				colors.push( color.r, color.g, color.b );
    				v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );
    				x = Math.sin( v ) * r;
    				z = Math.cos( v ) * r;
    				vertices.push( x, 0, z );
    				colors.push( color.r, color.g, color.b );
    			}
    		}
    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
    		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
    		super( geometry, material );
    		this.type = 'PolarGridHelper';
    	}
    }
    const _v1$5 = new Vector3();
    const _v2$3 = new Vector3();
    const _v3$1 = new Vector3();
    class DirectionalLightHelper extends Object3D {
    	constructor( light, size, color ) {
    		super();
    		this.light = light;
    		this.light.updateMatrixWorld();
    		this.matrix = light.matrixWorld;
    		this.matrixAutoUpdate = false;
    		this.color = color;
    		if ( size === undefined ) size = 1;
    		let geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( [
    			- size, size, 0,
    			size, size, 0,
    			size, - size, 0,
    			- size, - size, 0,
    			- size, size, 0
    		], 3 ) );
    		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );
    		this.lightPlane = new Line( geometry, material );
    		this.add( this.lightPlane );
    		geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );
    		this.targetLine = new Line( geometry, material );
    		this.add( this.targetLine );
    		this.update();
    	}
    	dispose() {
    		this.lightPlane.geometry.dispose();
    		this.lightPlane.material.dispose();
    		this.targetLine.geometry.dispose();
    		this.targetLine.material.dispose();
    	}
    	update() {
    		_v1$5.setFromMatrixPosition( this.light.matrixWorld );
    		_v2$3.setFromMatrixPosition( this.light.target.matrixWorld );
    		_v3$1.subVectors( _v2$3, _v1$5 );
    		this.lightPlane.lookAt( _v2$3 );
    		if ( this.color !== undefined ) {
    			this.lightPlane.material.color.set( this.color );
    			this.targetLine.material.color.set( this.color );
    		} else {
    			this.lightPlane.material.color.copy( this.light.color );
    			this.targetLine.material.color.copy( this.light.color );
    		}
    		this.targetLine.lookAt( _v2$3 );
    		this.targetLine.scale.z = _v3$1.length();
    	}
    }
    const _vector$b = new Vector3();
    const _camera = new Camera();
    class CameraHelper extends LineSegments {
    	constructor( camera ) {
    		const geometry = new BufferGeometry();
    		const material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );
    		const vertices = [];
    		const colors = [];
    		const pointMap = {};
    		const colorFrustum = new Color( 0xffaa00 );
    		const colorCone = new Color( 0xff0000 );
    		const colorUp = new Color( 0x00aaff );
    		const colorTarget = new Color( 0xffffff );
    		const colorCross = new Color( 0x333333 );
    		addLine( 'n1', 'n2', colorFrustum );
    		addLine( 'n2', 'n4', colorFrustum );
    		addLine( 'n4', 'n3', colorFrustum );
    		addLine( 'n3', 'n1', colorFrustum );
    		addLine( 'f1', 'f2', colorFrustum );
    		addLine( 'f2', 'f4', colorFrustum );
    		addLine( 'f4', 'f3', colorFrustum );
    		addLine( 'f3', 'f1', colorFrustum );
    		addLine( 'n1', 'f1', colorFrustum );
    		addLine( 'n2', 'f2', colorFrustum );
    		addLine( 'n3', 'f3', colorFrustum );
    		addLine( 'n4', 'f4', colorFrustum );
    		addLine( 'p', 'n1', colorCone );
    		addLine( 'p', 'n2', colorCone );
    		addLine( 'p', 'n3', colorCone );
    		addLine( 'p', 'n4', colorCone );
    		addLine( 'u1', 'u2', colorUp );
    		addLine( 'u2', 'u3', colorUp );
    		addLine( 'u3', 'u1', colorUp );
    		addLine( 'c', 't', colorTarget );
    		addLine( 'p', 'c', colorCross );
    		addLine( 'cn1', 'cn2', colorCross );
    		addLine( 'cn3', 'cn4', colorCross );
    		addLine( 'cf1', 'cf2', colorCross );
    		addLine( 'cf3', 'cf4', colorCross );
    		function addLine( a, b, color ) {
    			addPoint( a, color );
    			addPoint( b, color );
    		}
    		function addPoint( id, color ) {
    			vertices.push( 0, 0, 0 );
    			colors.push( color.r, color.g, color.b );
    			if ( pointMap[ id ] === undefined ) {
    				pointMap[ id ] = [];
    			}
    			pointMap[ id ].push( ( vertices.length / 3 ) - 1 );
    		}
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
    		super( geometry, material );
    		this.type = 'CameraHelper';
    		this.camera = camera;
    		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();
    		this.matrix = camera.matrixWorld;
    		this.matrixAutoUpdate = false;
    		this.pointMap = pointMap;
    		this.update();
    	}
    	update() {
    		const geometry = this.geometry;
    		const pointMap = this.pointMap;
    		const w = 1, h = 1;
    		_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );
    		setPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );
    		setPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );
    		setPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );
    		setPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );
    		setPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );
    		setPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );
    		setPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );
    		setPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );
    		setPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );
    		setPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );
    		setPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );
    		setPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );
    		setPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );
    		setPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );
    		setPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );
    		setPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );
    		setPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );
    		setPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );
    		setPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );
    		setPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );
    		setPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );
    		geometry.getAttribute( 'position' ).needsUpdate = true;
    	}
    }
    function setPoint( point, pointMap, geometry, camera, x, y, z ) {
    	_vector$b.set( x, y, z ).unproject( camera );
    	const points = pointMap[ point ];
    	if ( points !== undefined ) {
    		const position = geometry.getAttribute( 'position' );
    		for ( let i = 0, l = points.length; i < l; i ++ ) {
    			position.setXYZ( points[ i ], _vector$b.x, _vector$b.y, _vector$b.z );
    		}
    	}
    }
    const _box$3 = new Box3();
    class BoxHelper extends LineSegments {
    	constructor( object, color = 0xffff00 ) {
    		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
    		const positions = new Float32Array( 8 * 3 );
    		const geometry = new BufferGeometry();
    		geometry.setIndex( new BufferAttribute( indices, 1 ) );
    		geometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );
    		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
    		this.object = object;
    		this.type = 'BoxHelper';
    		this.matrixAutoUpdate = false;
    		this.update();
    	}
    	update( object ) {
    		if ( object !== undefined ) {
    			console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );
    		}
    		if ( this.object !== undefined ) {
    			_box$3.setFromObject( this.object );
    		}
    		if ( _box$3.isEmpty() ) return;
    		const min = _box$3.min;
    		const max = _box$3.max;
    		const position = this.geometry.attributes.position;
    		const array = position.array;
    		array[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;
    		array[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;
    		array[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;
    		array[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;
    		array[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;
    		array[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;
    		array[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;
    		array[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;
    		position.needsUpdate = true;
    		this.geometry.computeBoundingSphere();
    	}
    	setFromObject( object ) {
    		this.object = object;
    		this.update();
    		return this;
    	}
    	copy( source ) {
    		LineSegments.prototype.copy.call( this, source );
    		this.object = source.object;
    		return this;
    	}
    }
    class Box3Helper extends LineSegments {
    	constructor( box, color = 0xffff00 ) {
    		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
    		const positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];
    		const geometry = new BufferGeometry();
    		geometry.setIndex( new BufferAttribute( indices, 1 ) );
    		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
    		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
    		this.box = box;
    		this.type = 'Box3Helper';
    		this.geometry.computeBoundingSphere();
    	}
    	updateMatrixWorld( force ) {
    		const box = this.box;
    		if ( box.isEmpty() ) return;
    		box.getCenter( this.position );
    		box.getSize( this.scale );
    		this.scale.multiplyScalar( 0.5 );
    		super.updateMatrixWorld( force );
    	}
    }
    class PlaneHelper extends Line {
    	constructor( plane, size, hex ) {
    		const color = ( hex !== undefined ) ? hex : 0xffff00;
    		const positions = [ 1, - 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0 ];
    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
    		geometry.computeBoundingSphere();
    		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
    		this.type = 'PlaneHelper';
    		this.plane = plane;
    		this.size = ( size === undefined ) ? 1 : size;
    		const positions2 = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, 1, 1, - 1, - 1, 1, 1, - 1, 1 ];
    		const geometry2 = new BufferGeometry();
    		geometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
    		geometry2.computeBoundingSphere();
    		this.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );
    	}
    	updateMatrixWorld( force ) {
    		let scale = - this.plane.constant;
    		if ( Math.abs( scale ) < 1e-8 ) scale = 1e-8;
    		this.scale.set( 0.5 * this.size, 0.5 * this.size, scale );
    		this.children[ 0 ].material.side = ( scale < 0 ) ? BackSide : FrontSide;
    		this.lookAt( this.plane.normal );
    		super.updateMatrixWorld( force );
    	}
    }
    const _axis = new Vector3();
    let _lineGeometry, _coneGeometry;
    class ArrowHelper extends Object3D {
    	constructor( dir, origin, length, color, headLength, headWidth ) {
    		super();
    		this.type = 'ArrowHelper';
    		if ( dir === undefined ) dir = new Vector3( 0, 0, 1 );
    		if ( origin === undefined ) origin = new Vector3( 0, 0, 0 );
    		if ( length === undefined ) length = 1;
    		if ( color === undefined ) color = 0xffff00;
    		if ( headLength === undefined ) headLength = 0.2 * length;
    		if ( headWidth === undefined ) headWidth = 0.2 * headLength;
    		if ( _lineGeometry === undefined ) {
    			_lineGeometry = new BufferGeometry();
    			_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );
    			_coneGeometry = new CylinderBufferGeometry( 0, 0.5, 1, 5, 1 );
    			_coneGeometry.translate( 0, - 0.5, 0 );
    		}
    		this.position.copy( origin );
    		this.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
    		this.line.matrixAutoUpdate = false;
    		this.add( this.line );
    		this.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );
    		this.cone.matrixAutoUpdate = false;
    		this.add( this.cone );
    		this.setDirection( dir );
    		this.setLength( length, headLength, headWidth );
    	}
    	setDirection( dir ) {
    		if ( dir.y > 0.99999 ) {
    			this.quaternion.set( 0, 0, 0, 1 );
    		} else if ( dir.y < - 0.99999 ) {
    			this.quaternion.set( 1, 0, 0, 0 );
    		} else {
    			_axis.set( dir.z, 0, - dir.x ).normalize();
    			const radians = Math.acos( dir.y );
    			this.quaternion.setFromAxisAngle( _axis, radians );
    		}
    	}
    	setLength( length, headLength, headWidth ) {
    		if ( headLength === undefined ) headLength = 0.2 * length;
    		if ( headWidth === undefined ) headWidth = 0.2 * headLength;
    		this.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 );
    		this.line.updateMatrix();
    		this.cone.scale.set( headWidth, headLength, headWidth );
    		this.cone.position.y = length;
    		this.cone.updateMatrix();
    	}
    	setColor( color ) {
    		this.line.material.color.set( color );
    		this.cone.material.color.set( color );
    	}
    	copy( source ) {
    		super.copy( source, false );
    		this.line.copy( source.line );
    		this.cone.copy( source.cone );
    		return this;
    	}
    }
    class AxesHelper extends LineSegments {
    	constructor( size = 1 ) {
    		const vertices = [
    			0, 0, 0,	size, 0, 0,
    			0, 0, 0,	0, size, 0,
    			0, 0, 0,	0, 0, size
    		];
    		const colors = [
    			1, 0, 0,	1, 0.6, 0,
    			0, 1, 0,	0.6, 1, 0,
    			0, 0, 1,	0, 0.6, 1
    		];
    		const geometry = new BufferGeometry();
    		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
    		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
    		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
    		super( geometry, material );
    		this.type = 'AxesHelper';
    	}
    }
    const LOD_MIN = 4;
    const LOD_MAX = 8;
    const SIZE_MAX = Math.pow( 2, LOD_MAX );
    const EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];
    const TOTAL_LODS = LOD_MAX - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;
    const MAX_SAMPLES = 20;
    const ENCODINGS = {
    	[ LinearEncoding ]: 0,
    	[ sRGBEncoding ]: 1,
    	[ RGBEEncoding ]: 2,
    	[ RGBM7Encoding ]: 3,
    	[ RGBM16Encoding ]: 4,
    	[ RGBDEncoding ]: 5,
    	[ GammaEncoding ]: 6
    };
    const _flatCamera = new OrthographicCamera();
    const { _lodPlanes, _sizeLods, _sigmas } = _createPlanes();
    let _oldTarget = null;
    const PHI = ( 1 + Math.sqrt( 5 ) ) / 2;
    const INV_PHI = 1 / PHI;
    const _axisDirections = [
    	new Vector3( 1, 1, 1 ),
    	new Vector3( - 1, 1, 1 ),
    	new Vector3( 1, 1, - 1 ),
    	new Vector3( - 1, 1, - 1 ),
    	new Vector3( 0, PHI, INV_PHI ),
    	new Vector3( 0, PHI, - INV_PHI ),
    	new Vector3( INV_PHI, 0, PHI ),
    	new Vector3( - INV_PHI, 0, PHI ),
    	new Vector3( PHI, INV_PHI, 0 ),
    	new Vector3( - PHI, INV_PHI, 0 ) ];
    class PMREMGenerator {
    	constructor( renderer ) {
    		this._renderer = renderer;
    		this._pingPongRenderTarget = null;
    		this._blurMaterial = _getBlurShader( MAX_SAMPLES );
    		this._equirectShader = null;
    		this._cubemapShader = null;
    		this._compileMaterial( this._blurMaterial );
    	}
    	fromScene( scene, sigma = 0, near = 0.1, far = 100 ) {
    		_oldTarget = this._renderer.getRenderTarget();
    		const cubeUVRenderTarget = this._allocateTargets();
    		this._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );
    		if ( sigma > 0 ) {
    			this._blur( cubeUVRenderTarget, 0, 0, sigma );
    		}
    		this._applyPMREM( cubeUVRenderTarget );
    		this._cleanup( cubeUVRenderTarget );
    		return cubeUVRenderTarget;
    	}
    	fromEquirectangular( equirectangular ) {
    		return this._fromTexture( equirectangular );
    	}
    	fromCubemap( cubemap ) {
    		return this._fromTexture( cubemap );
    	}
    	compileCubemapShader() {
    		if ( this._cubemapShader === null ) {
    			this._cubemapShader = _getCubemapShader();
    			this._compileMaterial( this._cubemapShader );
    		}
    	}
    	compileEquirectangularShader() {
    		if ( this._equirectShader === null ) {
    			this._equirectShader = _getEquirectShader();
    			this._compileMaterial( this._equirectShader );
    		}
    	}
    	dispose() {
    		this._blurMaterial.dispose();
    		if ( this._cubemapShader !== null ) this._cubemapShader.dispose();
    		if ( this._equirectShader !== null ) this._equirectShader.dispose();
    		for ( let i = 0; i < _lodPlanes.length; i ++ ) {
    			_lodPlanes[ i ].dispose();
    		}
    	}
    	_cleanup( outputTarget ) {
    		this._pingPongRenderTarget.dispose();
    		this._renderer.setRenderTarget( _oldTarget );
    		outputTarget.scissorTest = false;
    		_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );
    	}
    	_fromTexture( texture ) {
    		_oldTarget = this._renderer.getRenderTarget();
    		const cubeUVRenderTarget = this._allocateTargets( texture );
    		this._textureToCubeUV( texture, cubeUVRenderTarget );
    		this._applyPMREM( cubeUVRenderTarget );
    		this._cleanup( cubeUVRenderTarget );
    		return cubeUVRenderTarget;
    	}
    	_allocateTargets( texture ) {
    		const params = {
    			magFilter: NearestFilter,
    			minFilter: NearestFilter,
    			generateMipmaps: false,
    			type: UnsignedByteType,
    			format: RGBEFormat,
    			encoding: _isLDR( texture ) ? texture.encoding : RGBEEncoding,
    			depthBuffer: false
    		};
    		const cubeUVRenderTarget = _createRenderTarget( params );
    		cubeUVRenderTarget.depthBuffer = texture ? false : true;
    		this._pingPongRenderTarget = _createRenderTarget( params );
    		return cubeUVRenderTarget;
    	}
    	_compileMaterial( material ) {
    		const tmpMesh = new Mesh( _lodPlanes[ 0 ], material );
    		this._renderer.compile( tmpMesh, _flatCamera );
    	}
    	_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {
    		const fov = 90;
    		const aspect = 1;
    		const cubeCamera = new PerspectiveCamera( fov, aspect, near, far );
    		const upSign = [ 1, - 1, 1, 1, 1, 1 ];
    		const forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];
    		const renderer = this._renderer;
    		const outputEncoding = renderer.outputEncoding;
    		const toneMapping = renderer.toneMapping;
    		const clearColor = renderer.getClearColor();
    		const clearAlpha = renderer.getClearAlpha();
    		renderer.toneMapping = NoToneMapping;
    		renderer.outputEncoding = LinearEncoding;
    		let background = scene.background;
    		if ( background && background.isColor ) {
    			background.convertSRGBToLinear();
    			const maxComponent = Math.max( background.r, background.g, background.b );
    			const fExp = Math.min( Math.max( Math.ceil( Math.log2( maxComponent ) ), - 128.0 ), 127.0 );
    			background = background.multiplyScalar( Math.pow( 2.0, - fExp ) );
    			const alpha = ( fExp + 128.0 ) / 255.0;
    			renderer.setClearColor( background, alpha );
    			scene.background = null;
    		}
    		for ( let i = 0; i < 6; i ++ ) {
    			const col = i % 3;
    			if ( col == 0 ) {
    				cubeCamera.up.set( 0, upSign[ i ], 0 );
    				cubeCamera.lookAt( forwardSign[ i ], 0, 0 );
    			} else if ( col == 1 ) {
    				cubeCamera.up.set( 0, 0, upSign[ i ] );
    				cubeCamera.lookAt( 0, forwardSign[ i ], 0 );
    			} else {
    				cubeCamera.up.set( 0, upSign[ i ], 0 );
    				cubeCamera.lookAt( 0, 0, forwardSign[ i ] );
    			}
    			_setViewport( cubeUVRenderTarget,
    				col * SIZE_MAX, i > 2 ? SIZE_MAX : 0, SIZE_MAX, SIZE_MAX );
    			renderer.setRenderTarget( cubeUVRenderTarget );
    			renderer.render( scene, cubeCamera );
    		}
    		renderer.toneMapping = toneMapping;
    		renderer.outputEncoding = outputEncoding;
    		renderer.setClearColor( clearColor, clearAlpha );
    	}
    	_textureToCubeUV( texture, cubeUVRenderTarget ) {
    		const renderer = this._renderer;
    		if ( texture.isCubeTexture ) {
    			if ( this._cubemapShader == null ) {
    				this._cubemapShader = _getCubemapShader();
    			}
    		} else {
    			if ( this._equirectShader == null ) {
    				this._equirectShader = _getEquirectShader();
    			}
    		}
    		const material = texture.isCubeTexture ? this._cubemapShader : this._equirectShader;
    		const mesh = new Mesh( _lodPlanes[ 0 ], material );
    		const uniforms = material.uniforms;
    		uniforms[ 'envMap' ].value = texture;
    		if ( ! texture.isCubeTexture ) {
    			uniforms[ 'texelSize' ].value.set( 1.0 / texture.image.width, 1.0 / texture.image.height );
    		}
    		uniforms[ 'inputEncoding' ].value = ENCODINGS[ texture.encoding ];
    		uniforms[ 'outputEncoding' ].value = ENCODINGS[ cubeUVRenderTarget.texture.encoding ];
    		_setViewport( cubeUVRenderTarget, 0, 0, 3 * SIZE_MAX, 2 * SIZE_MAX );
    		renderer.setRenderTarget( cubeUVRenderTarget );
    		renderer.render( mesh, _flatCamera );
    	}
    	_applyPMREM( cubeUVRenderTarget ) {
    		const renderer = this._renderer;
    		const autoClear = renderer.autoClear;
    		renderer.autoClear = false;
    		for ( let i = 1; i < TOTAL_LODS; i ++ ) {
    			const sigma = Math.sqrt( _sigmas[ i ] * _sigmas[ i ] - _sigmas[ i - 1 ] * _sigmas[ i - 1 ] );
    			const poleAxis = _axisDirections[ ( i - 1 ) % _axisDirections.length ];
    			this._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );
    		}
    		renderer.autoClear = autoClear;
    	}
    	_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {
    		const pingPongRenderTarget = this._pingPongRenderTarget;
    		this._halfBlur(
    			cubeUVRenderTarget,
    			pingPongRenderTarget,
    			lodIn,
    			lodOut,
    			sigma,
    			'latitudinal',
    			poleAxis );
    		this._halfBlur(
    			pingPongRenderTarget,
    			cubeUVRenderTarget,
    			lodOut,
    			lodOut,
    			sigma,
    			'longitudinal',
    			poleAxis );
    	}
    	_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {
    		const renderer = this._renderer;
    		const blurMaterial = this._blurMaterial;
    		if ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {
    			console.error(
    				'blur direction must be either latitudinal or longitudinal!' );
    		}
    		const STANDARD_DEVIATIONS = 3;
    		const blurMesh = new Mesh( _lodPlanes[ lodOut ], blurMaterial );
    		const blurUniforms = blurMaterial.uniforms;
    		const pixels = _sizeLods[ lodIn ] - 1;
    		const radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );
    		const sigmaPixels = sigmaRadians / radiansPerPixel;
    		const samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;
    		if ( samples > MAX_SAMPLES ) {
    			console.warn( `sigmaRadians, ${
				sigmaRadians}, is too large and will clip, as it requested ${
				samples} samples when the maximum is set to ${MAX_SAMPLES}` );
    		}
    		const weights = [];
    		let sum = 0;
    		for ( let i = 0; i < MAX_SAMPLES; ++ i ) {
    			const x = i / sigmaPixels;
    			const weight = Math.exp( - x * x / 2 );
    			weights.push( weight );
    			if ( i == 0 ) {
    				sum += weight;
    			} else if ( i < samples ) {
    				sum += 2 * weight;
    			}
    		}
    		for ( let i = 0; i < weights.length; i ++ ) {
    			weights[ i ] = weights[ i ] / sum;
    		}
    		blurUniforms[ 'envMap' ].value = targetIn.texture;
    		blurUniforms[ 'samples' ].value = samples;
    		blurUniforms[ 'weights' ].value = weights;
    		blurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';
    		if ( poleAxis ) {
    			blurUniforms[ 'poleAxis' ].value = poleAxis;
    		}
    		blurUniforms[ 'dTheta' ].value = radiansPerPixel;
    		blurUniforms[ 'mipInt' ].value = LOD_MAX - lodIn;
    		blurUniforms[ 'inputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];
    		blurUniforms[ 'outputEncoding' ].value = ENCODINGS[ targetIn.texture.encoding ];
    		const outputSize = _sizeLods[ lodOut ];
    		const x = 3 * Math.max( 0, SIZE_MAX - 2 * outputSize );
    		const y = ( lodOut === 0 ? 0 : 2 * SIZE_MAX ) + 2 * outputSize * ( lodOut > LOD_MAX - LOD_MIN ? lodOut - LOD_MAX + LOD_MIN : 0 );
    		_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );
    		renderer.setRenderTarget( targetOut );
    		renderer.render( blurMesh, _flatCamera );
    	}
    }
    function _isLDR( texture ) {
    	if ( texture === undefined || texture.type !== UnsignedByteType ) return false;
    	return texture.encoding === LinearEncoding || texture.encoding === sRGBEncoding || texture.encoding === GammaEncoding;
    }
    function _createPlanes() {
    	const _lodPlanes = [];
    	const _sizeLods = [];
    	const _sigmas = [];
    	let lod = LOD_MAX;
    	for ( let i = 0; i < TOTAL_LODS; i ++ ) {
    		const sizeLod = Math.pow( 2, lod );
    		_sizeLods.push( sizeLod );
    		let sigma = 1.0 / sizeLod;
    		if ( i > LOD_MAX - LOD_MIN ) {
    			sigma = EXTRA_LOD_SIGMA[ i - LOD_MAX + LOD_MIN - 1 ];
    		} else if ( i == 0 ) {
    			sigma = 0;
    		}
    		_sigmas.push( sigma );
    		const texelSize = 1.0 / ( sizeLod - 1 );
    		const min = - texelSize / 2;
    		const max = 1 + texelSize / 2;
    		const uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];
    		const cubeFaces = 6;
    		const vertices = 6;
    		const positionSize = 3;
    		const uvSize = 2;
    		const faceIndexSize = 1;
    		const position = new Float32Array( positionSize * vertices * cubeFaces );
    		const uv = new Float32Array( uvSize * vertices * cubeFaces );
    		const faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );
    		for ( let face = 0; face < cubeFaces; face ++ ) {
    			const x = ( face % 3 ) * 2 / 3 - 1;
    			const y = face > 2 ? 0 : - 1;
    			const coordinates = [
    				x, y, 0,
    				x + 2 / 3, y, 0,
    				x + 2 / 3, y + 1, 0,
    				x, y, 0,
    				x + 2 / 3, y + 1, 0,
    				x, y + 1, 0
    			];
    			position.set( coordinates, positionSize * vertices * face );
    			uv.set( uv1, uvSize * vertices * face );
    			const fill = [ face, face, face, face, face, face ];
    			faceIndex.set( fill, faceIndexSize * vertices * face );
    		}
    		const planes = new BufferGeometry();
    		planes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );
    		planes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );
    		planes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );
    		_lodPlanes.push( planes );
    		if ( lod > LOD_MIN ) {
    			lod --;
    		}
    	}
    	return { _lodPlanes, _sizeLods, _sigmas };
    }
    function _createRenderTarget( params ) {
    	const cubeUVRenderTarget = new WebGLRenderTarget( 3 * SIZE_MAX, 3 * SIZE_MAX, params );
    	cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
    	cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
    	cubeUVRenderTarget.scissorTest = true;
    	return cubeUVRenderTarget;
    }
    function _setViewport( target, x, y, width, height ) {
    	target.viewport.set( x, y, width, height );
    	target.scissor.set( x, y, width, height );
    }
    function _getBlurShader( maxSamples ) {
    	const weights = new Float32Array( maxSamples );
    	const poleAxis = new Vector3( 0, 1, 0 );
    	const shaderMaterial = new RawShaderMaterial( {
    		name: 'SphericalGaussianBlur',
    		defines: { 'n': maxSamples },
    		uniforms: {
    			'envMap': { value: null },
    			'samples': { value: 1 },
    			'weights': { value: weights },
    			'latitudinal': { value: false },
    			'dTheta': { value: 0 },
    			'mipInt': { value: 0 },
    			'poleAxis': { value: poleAxis },
    			'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },
    			'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }
    		},
    		vertexShader: _getCommonVertexShader(),
    		fragmentShader: `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform int samples;
			uniform float weights[ n ];
			uniform bool latitudinal;
			uniform float dTheta;
			uniform float mipInt;
			uniform vec3 poleAxis;

			${ _getEncodings() }

			#define ENVMAP_TYPE_CUBE_UV
			#include <cube_uv_reflection_fragment>

			vec3 getSample( float theta, vec3 axis ) {

				float cosTheta = cos( theta );
				// Rodrigues' axis-angle rotation
				vec3 sampleDirection = vOutputDirection * cosTheta
					+ cross( axis, vOutputDirection ) * sin( theta )
					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );

				return bilinearCubeUV( envMap, sampleDirection, mipInt );

			}

			void main() {

				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );

				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {

					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );

				}

				axis = normalize( axis );

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );

				for ( int i = 1; i < n; i++ ) {

					if ( i >= samples ) {

						break;

					}

					float theta = dTheta * float( i );
					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );

				}

				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
    		blending: NoBlending,
    		depthTest: false,
    		depthWrite: false
    	} );
    	return shaderMaterial;
    }
    function _getEquirectShader() {
    	const texelSize = new Vector2( 1, 1 );
    	const shaderMaterial = new RawShaderMaterial( {
    		name: 'EquirectangularToCubeUV',
    		uniforms: {
    			'envMap': { value: null },
    			'texelSize': { value: texelSize },
    			'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },
    			'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }
    		},
    		vertexShader: _getCommonVertexShader(),
    		fragmentShader: `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform sampler2D envMap;
			uniform vec2 texelSize;

			${ _getEncodings() }

			#include <common>

			void main() {

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );

				vec3 outputDirection = normalize( vOutputDirection );
				vec2 uv = equirectUv( outputDirection );

				vec2 f = fract( uv / texelSize - 0.5 );
				uv -= f * texelSize;
				vec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.x += texelSize.x;
				vec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.y += texelSize.y;
				vec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;
				uv.x -= texelSize.x;
				vec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;

				vec3 tm = mix( tl, tr, f.x );
				vec3 bm = mix( bl, br, f.x );
				gl_FragColor.rgb = mix( tm, bm, f.y );

				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
    		blending: NoBlending,
    		depthTest: false,
    		depthWrite: false
    	} );
    	return shaderMaterial;
    }
    function _getCubemapShader() {
    	const shaderMaterial = new RawShaderMaterial( {
    		name: 'CubemapToCubeUV',
    		uniforms: {
    			'envMap': { value: null },
    			'inputEncoding': { value: ENCODINGS[ LinearEncoding ] },
    			'outputEncoding': { value: ENCODINGS[ LinearEncoding ] }
    		},
    		vertexShader: _getCommonVertexShader(),
    		fragmentShader: `

			precision mediump float;
			precision mediump int;

			varying vec3 vOutputDirection;

			uniform samplerCube envMap;

			${ _getEncodings() }

			void main() {

				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
				gl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;
				gl_FragColor = linearToOutputTexel( gl_FragColor );

			}
		`,
    		blending: NoBlending,
    		depthTest: false,
    		depthWrite: false
    	} );
    	return shaderMaterial;
    }
    function _getCommonVertexShader() {
    	return `

		precision mediump float;
		precision mediump int;

		attribute vec3 position;
		attribute vec2 uv;
		attribute float faceIndex;

		varying vec3 vOutputDirection;

		// RH coordinate system; PMREM face-indexing convention
		vec3 getDirection( vec2 uv, float face ) {

			uv = 2.0 * uv - 1.0;

			vec3 direction = vec3( uv, 1.0 );

			if ( face == 0.0 ) {

				direction = direction.zyx; // ( 1, v, u ) pos x

			} else if ( face == 1.0 ) {

				direction = direction.xzy;
				direction.xz *= -1.0; // ( -u, 1, -v ) pos y

			} else if ( face == 2.0 ) {

				direction.x *= -1.0; // ( -u, v, 1 ) pos z

			} else if ( face == 3.0 ) {

				direction = direction.zyx;
				direction.xz *= -1.0; // ( -1, v, -u ) neg x

			} else if ( face == 4.0 ) {

				direction = direction.xzy;
				direction.xy *= -1.0; // ( -u, -1, v ) neg y

			} else if ( face == 5.0 ) {

				direction.z *= -1.0; // ( u, v, -1 ) neg z

			}

			return direction;

		}

		void main() {

			vOutputDirection = getDirection( uv, faceIndex );
			gl_Position = vec4( position, 1.0 );

		}
	`;
    }
    function _getEncodings() {
    	return `

		uniform int inputEncoding;
		uniform int outputEncoding;

		#include <encodings_pars_fragment>

		vec4 inputTexelToLinear( vec4 value ) {

			if ( inputEncoding == 0 ) {

				return value;

			} else if ( inputEncoding == 1 ) {

				return sRGBToLinear( value );

			} else if ( inputEncoding == 2 ) {

				return RGBEToLinear( value );

			} else if ( inputEncoding == 3 ) {

				return RGBMToLinear( value, 7.0 );

			} else if ( inputEncoding == 4 ) {

				return RGBMToLinear( value, 16.0 );

			} else if ( inputEncoding == 5 ) {

				return RGBDToLinear( value, 256.0 );

			} else {

				return GammaToLinear( value, 2.2 );

			}

		}

		vec4 linearToOutputTexel( vec4 value ) {

			if ( outputEncoding == 0 ) {

				return value;

			} else if ( outputEncoding == 1 ) {

				return LinearTosRGB( value );

			} else if ( outputEncoding == 2 ) {

				return LinearToRGBE( value );

			} else if ( outputEncoding == 3 ) {

				return LinearToRGBM( value, 7.0 );

			} else if ( outputEncoding == 4 ) {

				return LinearToRGBM( value, 16.0 );

			} else if ( outputEncoding == 5 ) {

				return LinearToRGBD( value, 256.0 );

			} else {

				return LinearToGamma( value, 2.2 );

			}

		}

		vec4 envMapTexelToLinear( vec4 color ) {

			return inputTexelToLinear( color );

		}
	`;
    }
    function Face4( a, b, c, d, normal, color, materialIndex ) {
    	console.warn( 'THREE.Face4 has been removed. A THREE.Face3 will be created instead.' );
    	return new Face3( a, b, c, normal, color, materialIndex );
    }
    const LineStrip = 0;
    const LinePieces = 1;
    const NoColors = 0;
    const FaceColors = 1;
    const VertexColors = 2;
    function MeshFaceMaterial( materials ) {
    	console.warn( 'THREE.MeshFaceMaterial has been removed. Use an Array instead.' );
    	return materials;
    }
    function MultiMaterial( materials ) {
    	if ( materials === undefined ) materials = [];
    	console.warn( 'THREE.MultiMaterial has been removed. Use an Array instead.' );
    	materials.isMultiMaterial = true;
    	materials.materials = materials;
    	materials.clone = function () {
    		return materials.slice();
    	};
    	return materials;
    }
    function PointCloud( geometry, material ) {
    	console.warn( 'THREE.PointCloud has been renamed to THREE.Points.' );
    	return new Points( geometry, material );
    }
    function Particle( material ) {
    	console.warn( 'THREE.Particle has been renamed to THREE.Sprite.' );
    	return new Sprite( material );
    }
    function ParticleSystem( geometry, material ) {
    	console.warn( 'THREE.ParticleSystem has been renamed to THREE.Points.' );
    	return new Points( geometry, material );
    }
    function PointCloudMaterial( parameters ) {
    	console.warn( 'THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.' );
    	return new PointsMaterial( parameters );
    }
    function ParticleBasicMaterial( parameters ) {
    	console.warn( 'THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.' );
    	return new PointsMaterial( parameters );
    }
    function ParticleSystemMaterial( parameters ) {
    	console.warn( 'THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.' );
    	return new PointsMaterial( parameters );
    }
    function Vertex( x, y, z ) {
    	console.warn( 'THREE.Vertex has been removed. Use THREE.Vector3 instead.' );
    	return new Vector3( x, y, z );
    }
    function DynamicBufferAttribute( array, itemSize ) {
    	console.warn( 'THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.' );
    	return new BufferAttribute( array, itemSize ).setUsage( DynamicDrawUsage );
    }
    function Int8Attribute( array, itemSize ) {
    	console.warn( 'THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.' );
    	return new Int8BufferAttribute( array, itemSize );
    }
    function Uint8Attribute( array, itemSize ) {
    	console.warn( 'THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.' );
    	return new Uint8BufferAttribute( array, itemSize );
    }
    function Uint8ClampedAttribute( array, itemSize ) {
    	console.warn( 'THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.' );
    	return new Uint8ClampedBufferAttribute( array, itemSize );
    }
    function Int16Attribute( array, itemSize ) {
    	console.warn( 'THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.' );
    	return new Int16BufferAttribute( array, itemSize );
    }
    function Uint16Attribute( array, itemSize ) {
    	console.warn( 'THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.' );
    	return new Uint16BufferAttribute( array, itemSize );
    }
    function Int32Attribute( array, itemSize ) {
    	console.warn( 'THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.' );
    	return new Int32BufferAttribute( array, itemSize );
    }
    function Uint32Attribute( array, itemSize ) {
    	console.warn( 'THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.' );
    	return new Uint32BufferAttribute( array, itemSize );
    }
    function Float32Attribute( array, itemSize ) {
    	console.warn( 'THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.' );
    	return new Float32BufferAttribute( array, itemSize );
    }
    function Float64Attribute( array, itemSize ) {
    	console.warn( 'THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.' );
    	return new Float64BufferAttribute( array, itemSize );
    }
    Curve.create = function ( construct, getPoint ) {
    	console.log( 'THREE.Curve.create() has been deprecated' );
    	construct.prototype = Object.create( Curve.prototype );
    	construct.prototype.constructor = construct;
    	construct.prototype.getPoint = getPoint;
    	return construct;
    };
    Object.assign( CurvePath.prototype, {
    	createPointsGeometry: function ( divisions ) {
    		console.warn( 'THREE.CurvePath: .createPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
    		const pts = this.getPoints( divisions );
    		return this.createGeometry( pts );
    	},
    	createSpacedPointsGeometry: function ( divisions ) {
    		console.warn( 'THREE.CurvePath: .createSpacedPointsGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
    		const pts = this.getSpacedPoints( divisions );
    		return this.createGeometry( pts );
    	},
    	createGeometry: function ( points ) {
    		console.warn( 'THREE.CurvePath: .createGeometry() has been removed. Use new THREE.Geometry().setFromPoints( points ) instead.' );
    		const geometry = new Geometry();
    		for ( let i = 0, l = points.length; i < l; i ++ ) {
    			const point = points[ i ];
    			geometry.vertices.push( new Vector3( point.x, point.y, point.z || 0 ) );
    		}
    		return geometry;
    	}
    } );
    Object.assign( Path.prototype, {
    	fromPoints: function ( points ) {
    		console.warn( 'THREE.Path: .fromPoints() has been renamed to .setFromPoints().' );
    		return this.setFromPoints( points );
    	}
    } );
    function ClosedSplineCurve3( points ) {
    	console.warn( 'THREE.ClosedSplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );
    	CatmullRomCurve3.call( this, points );
    	this.type = 'catmullrom';
    	this.closed = true;
    }
    ClosedSplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );
    function SplineCurve3( points ) {
    	console.warn( 'THREE.SplineCurve3 has been deprecated. Use THREE.CatmullRomCurve3 instead.' );
    	CatmullRomCurve3.call( this, points );
    	this.type = 'catmullrom';
    }
    SplineCurve3.prototype = Object.create( CatmullRomCurve3.prototype );
    function Spline( points ) {
    	console.warn( 'THREE.Spline has been removed. Use THREE.CatmullRomCurve3 instead.' );
    	CatmullRomCurve3.call( this, points );
    	this.type = 'catmullrom';
    }
    Spline.prototype = Object.create( CatmullRomCurve3.prototype );
    Object.assign( Spline.prototype, {
    	initFromArray: function (  ) {
    		console.error( 'THREE.Spline: .initFromArray() has been removed.' );
    	},
    	getControlPointsArray: function (  ) {
    		console.error( 'THREE.Spline: .getControlPointsArray() has been removed.' );
    	},
    	reparametrizeByArcLength: function (  ) {
    		console.error( 'THREE.Spline: .reparametrizeByArcLength() has been removed.' );
    	}
    } );
    function AxisHelper( size ) {
    	console.warn( 'THREE.AxisHelper has been renamed to THREE.AxesHelper.' );
    	return new AxesHelper( size );
    }
    function BoundingBoxHelper( object, color ) {
    	console.warn( 'THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.' );
    	return new BoxHelper( object, color );
    }
    function EdgesHelper( object, hex ) {
    	console.warn( 'THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.' );
    	return new LineSegments( new EdgesGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );
    }
    GridHelper.prototype.setColors = function () {
    	console.error( 'THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.' );
    };
    SkeletonHelper.prototype.update = function () {
    	console.error( 'THREE.SkeletonHelper: update() no longer needs to be called.' );
    };
    function WireframeHelper( object, hex ) {
    	console.warn( 'THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.' );
    	return new LineSegments( new WireframeGeometry( object.geometry ), new LineBasicMaterial( { color: hex !== undefined ? hex : 0xffffff } ) );
    }
    Object.assign( Loader.prototype, {
    	extractUrlBase: function ( url ) {
    		console.warn( 'THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.' );
    		return LoaderUtils.extractUrlBase( url );
    	}
    } );
    Loader.Handlers = {
    	add: function (  ) {
    		console.error( 'THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.' );
    	},
    	get: function (  ) {
    		console.error( 'THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.' );
    	}
    };
    function XHRLoader( manager ) {
    	console.warn( 'THREE.XHRLoader has been renamed to THREE.FileLoader.' );
    	return new FileLoader( manager );
    }
    function BinaryTextureLoader( manager ) {
    	console.warn( 'THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.' );
    	return new DataTextureLoader( manager );
    }
    Object.assign( ObjectLoader.prototype, {
    	setTexturePath: function ( value ) {
    		console.warn( 'THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().' );
    		return this.setResourcePath( value );
    	}
    } );
    Object.assign( Box2.prototype, {
    	center: function ( optionalTarget ) {
    		console.warn( 'THREE.Box2: .center() has been renamed to .getCenter().' );
    		return this.getCenter( optionalTarget );
    	},
    	empty: function () {
    		console.warn( 'THREE.Box2: .empty() has been renamed to .isEmpty().' );
    		return this.isEmpty();
    	},
    	isIntersectionBox: function ( box ) {
    		console.warn( 'THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().' );
    		return this.intersectsBox( box );
    	},
    	size: function ( optionalTarget ) {
    		console.warn( 'THREE.Box2: .size() has been renamed to .getSize().' );
    		return this.getSize( optionalTarget );
    	}
    } );
    Object.assign( Box3.prototype, {
    	center: function ( optionalTarget ) {
    		console.warn( 'THREE.Box3: .center() has been renamed to .getCenter().' );
    		return this.getCenter( optionalTarget );
    	},
    	empty: function () {
    		console.warn( 'THREE.Box3: .empty() has been renamed to .isEmpty().' );
    		return this.isEmpty();
    	},
    	isIntersectionBox: function ( box ) {
    		console.warn( 'THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().' );
    		return this.intersectsBox( box );
    	},
    	isIntersectionSphere: function ( sphere ) {
    		console.warn( 'THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
    		return this.intersectsSphere( sphere );
    	},
    	size: function ( optionalTarget ) {
    		console.warn( 'THREE.Box3: .size() has been renamed to .getSize().' );
    		return this.getSize( optionalTarget );
    	}
    } );
    Object.assign( Sphere.prototype, {
    	empty: function () {
    		console.warn( 'THREE.Sphere: .empty() has been renamed to .isEmpty().' );
    		return this.isEmpty();
    	},
    } );
    Frustum.prototype.setFromMatrix = function ( m ) {
    	console.warn( 'THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().' );
    	return this.setFromProjectionMatrix( m );
    };
    Line3.prototype.center = function ( optionalTarget ) {
    	console.warn( 'THREE.Line3: .center() has been renamed to .getCenter().' );
    	return this.getCenter( optionalTarget );
    };
    Object.assign( MathUtils, {
    	random16: function () {
    		console.warn( 'THREE.Math: .random16() has been deprecated. Use Math.random() instead.' );
    		return Math.random();
    	},
    	nearestPowerOfTwo: function ( value ) {
    		console.warn( 'THREE.Math: .nearestPowerOfTwo() has been renamed to .floorPowerOfTwo().' );
    		return MathUtils.floorPowerOfTwo( value );
    	},
    	nextPowerOfTwo: function ( value ) {
    		console.warn( 'THREE.Math: .nextPowerOfTwo() has been renamed to .ceilPowerOfTwo().' );
    		return MathUtils.ceilPowerOfTwo( value );
    	}
    } );
    Object.assign( Matrix3.prototype, {
    	flattenToArrayOffset: function ( array, offset ) {
    		console.warn( "THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead." );
    		return this.toArray( array, offset );
    	},
    	multiplyVector3: function ( vector ) {
    		console.warn( 'THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.' );
    		return vector.applyMatrix3( this );
    	},
    	multiplyVector3Array: function (  ) {
    		console.error( 'THREE.Matrix3: .multiplyVector3Array() has been removed.' );
    	},
    	applyToBufferAttribute: function ( attribute ) {
    		console.warn( 'THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.' );
    		return attribute.applyMatrix3( this );
    	},
    	applyToVector3Array: function (  ) {
    		console.error( 'THREE.Matrix3: .applyToVector3Array() has been removed.' );
    	}
    } );
    Object.assign( Matrix4.prototype, {
    	extractPosition: function ( m ) {
    		console.warn( 'THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().' );
    		return this.copyPosition( m );
    	},
    	flattenToArrayOffset: function ( array, offset ) {
    		console.warn( "THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead." );
    		return this.toArray( array, offset );
    	},
    	getPosition: function () {
    		console.warn( 'THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.' );
    		return new Vector3().setFromMatrixColumn( this, 3 );
    	},
    	setRotationFromQuaternion: function ( q ) {
    		console.warn( 'THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().' );
    		return this.makeRotationFromQuaternion( q );
    	},
    	multiplyToArray: function () {
    		console.warn( 'THREE.Matrix4: .multiplyToArray() has been removed.' );
    	},
    	multiplyVector3: function ( vector ) {
    		console.warn( 'THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
    		return vector.applyMatrix4( this );
    	},
    	multiplyVector4: function ( vector ) {
    		console.warn( 'THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
    		return vector.applyMatrix4( this );
    	},
    	multiplyVector3Array: function (  ) {
    		console.error( 'THREE.Matrix4: .multiplyVector3Array() has been removed.' );
    	},
    	rotateAxis: function ( v ) {
    		console.warn( 'THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.' );
    		v.transformDirection( this );
    	},
    	crossVector: function ( vector ) {
    		console.warn( 'THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.' );
    		return vector.applyMatrix4( this );
    	},
    	translate: function () {
    		console.error( 'THREE.Matrix4: .translate() has been removed.' );
    	},
    	rotateX: function () {
    		console.error( 'THREE.Matrix4: .rotateX() has been removed.' );
    	},
    	rotateY: function () {
    		console.error( 'THREE.Matrix4: .rotateY() has been removed.' );
    	},
    	rotateZ: function () {
    		console.error( 'THREE.Matrix4: .rotateZ() has been removed.' );
    	},
    	rotateByAxis: function () {
    		console.error( 'THREE.Matrix4: .rotateByAxis() has been removed.' );
    	},
    	applyToBufferAttribute: function ( attribute ) {
    		console.warn( 'THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.' );
    		return attribute.applyMatrix4( this );
    	},
    	applyToVector3Array: function (  ) {
    		console.error( 'THREE.Matrix4: .applyToVector3Array() has been removed.' );
    	},
    	makeFrustum: function ( left, right, bottom, top, near, far ) {
    		console.warn( 'THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.' );
    		return this.makePerspective( left, right, top, bottom, near, far );
    	}
    } );
    Plane.prototype.isIntersectionLine = function ( line ) {
    	console.warn( 'THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().' );
    	return this.intersectsLine( line );
    };
    Quaternion.prototype.multiplyVector3 = function ( vector ) {
    	console.warn( 'THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.' );
    	return vector.applyQuaternion( this );
    };
    Object.assign( Ray.prototype, {
    	isIntersectionBox: function ( box ) {
    		console.warn( 'THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().' );
    		return this.intersectsBox( box );
    	},
    	isIntersectionPlane: function ( plane ) {
    		console.warn( 'THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().' );
    		return this.intersectsPlane( plane );
    	},
    	isIntersectionSphere: function ( sphere ) {
    		console.warn( 'THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().' );
    		return this.intersectsSphere( sphere );
    	}
    } );
    Object.assign( Triangle.prototype, {
    	area: function () {
    		console.warn( 'THREE.Triangle: .area() has been renamed to .getArea().' );
    		return this.getArea();
    	},
    	barycoordFromPoint: function ( point, target ) {
    		console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
    		return this.getBarycoord( point, target );
    	},
    	midpoint: function ( target ) {
    		console.warn( 'THREE.Triangle: .midpoint() has been renamed to .getMidpoint().' );
    		return this.getMidpoint( target );
    	},
    	normal: function ( target ) {
    		console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
    		return this.getNormal( target );
    	},
    	plane: function ( target ) {
    		console.warn( 'THREE.Triangle: .plane() has been renamed to .getPlane().' );
    		return this.getPlane( target );
    	}
    } );
    Object.assign( Triangle, {
    	barycoordFromPoint: function ( point, a, b, c, target ) {
    		console.warn( 'THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().' );
    		return Triangle.getBarycoord( point, a, b, c, target );
    	},
    	normal: function ( a, b, c, target ) {
    		console.warn( 'THREE.Triangle: .normal() has been renamed to .getNormal().' );
    		return Triangle.getNormal( a, b, c, target );
    	}
    } );
    Object.assign( Shape.prototype, {
    	extractAllPoints: function ( divisions ) {
    		console.warn( 'THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.' );
    		return this.extractPoints( divisions );
    	},
    	extrude: function ( options ) {
    		console.warn( 'THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.' );
    		return new ExtrudeGeometry( this, options );
    	},
    	makeGeometry: function ( options ) {
    		console.warn( 'THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.' );
    		return new ShapeGeometry( this, options );
    	}
    } );
    Object.assign( Vector2.prototype, {
    	fromAttribute: function ( attribute, index, offset ) {
    		console.warn( 'THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().' );
    		return this.fromBufferAttribute( attribute, index, offset );
    	},
    	distanceToManhattan: function ( v ) {
    		console.warn( 'THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
    		return this.manhattanDistanceTo( v );
    	},
    	lengthManhattan: function () {
    		console.warn( 'THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().' );
    		return this.manhattanLength();
    	}
    } );
    Object.assign( Vector3.prototype, {
    	setEulerFromRotationMatrix: function () {
    		console.error( 'THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.' );
    	},
    	setEulerFromQuaternion: function () {
    		console.error( 'THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.' );
    	},
    	getPositionFromMatrix: function ( m ) {
    		console.warn( 'THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().' );
    		return this.setFromMatrixPosition( m );
    	},
    	getScaleFromMatrix: function ( m ) {
    		console.warn( 'THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().' );
    		return this.setFromMatrixScale( m );
    	},
    	getColumnFromMatrix: function ( index, matrix ) {
    		console.warn( 'THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().' );
    		return this.setFromMatrixColumn( matrix, index );
    	},
    	applyProjection: function ( m ) {
    		console.warn( 'THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.' );
    		return this.applyMatrix4( m );
    	},
    	fromAttribute: function ( attribute, index, offset ) {
    		console.warn( 'THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().' );
    		return this.fromBufferAttribute( attribute, index, offset );
    	},
    	distanceToManhattan: function ( v ) {
    		console.warn( 'THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().' );
    		return this.manhattanDistanceTo( v );
    	},
    	lengthManhattan: function () {
    		console.warn( 'THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().' );
    		return this.manhattanLength();
    	}
    } );
    Object.assign( Vector4.prototype, {
    	fromAttribute: function ( attribute, index, offset ) {
    		console.warn( 'THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().' );
    		return this.fromBufferAttribute( attribute, index, offset );
    	},
    	lengthManhattan: function () {
    		console.warn( 'THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().' );
    		return this.manhattanLength();
    	}
    } );
    Object.assign( Geometry.prototype, {
    	computeTangents: function () {
    		console.error( 'THREE.Geometry: .computeTangents() has been removed.' );
    	},
    	computeLineDistances: function () {
    		console.error( 'THREE.Geometry: .computeLineDistances() has been removed. Use THREE.Line.computeLineDistances() instead.' );
    	},
    	applyMatrix: function ( matrix ) {
    		console.warn( 'THREE.Geometry: .applyMatrix() has been renamed to .applyMatrix4().' );
    		return this.applyMatrix4( matrix );
    	}
    } );
    Object.assign( Object3D.prototype, {
    	getChildByName: function ( name ) {
    		console.warn( 'THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().' );
    		return this.getObjectByName( name );
    	},
    	renderDepth: function () {
    		console.warn( 'THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.' );
    	},
    	translate: function ( distance, axis ) {
    		console.warn( 'THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.' );
    		return this.translateOnAxis( axis, distance );
    	},
    	getWorldRotation: function () {
    		console.error( 'THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.' );
    	},
    	applyMatrix: function ( matrix ) {
    		console.warn( 'THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().' );
    		return this.applyMatrix4( matrix );
    	}
    } );
    Object.defineProperties( Object3D.prototype, {
    	eulerOrder: {
    		get: function () {
    			console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
    			return this.rotation.order;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.Object3D: .eulerOrder is now .rotation.order.' );
    			this.rotation.order = value;
    		}
    	},
    	useQuaternion: {
    		get: function () {
    			console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );
    		},
    		set: function () {
    			console.warn( 'THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.' );
    		}
    	}
    } );
    Object.assign( Mesh.prototype, {
    	setDrawMode: function () {
    		console.error( 'THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );
    	},
    } );
    Object.defineProperties( Mesh.prototype, {
    	drawMode: {
    		get: function () {
    			console.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.' );
    			return TrianglesDrawMode;
    		},
    		set: function () {
    			console.error( 'THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.' );
    		}
    	}
    } );
    Object.defineProperties( LOD.prototype, {
    	objects: {
    		get: function () {
    			console.warn( 'THREE.LOD: .objects has been renamed to .levels.' );
    			return this.levels;
    		}
    	}
    } );
    Object.defineProperty( Skeleton.prototype, 'useVertexTexture', {
    	get: function () {
    		console.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );
    	},
    	set: function () {
    		console.warn( 'THREE.Skeleton: useVertexTexture has been removed.' );
    	}
    } );
    SkinnedMesh.prototype.initBones = function () {
    	console.error( 'THREE.SkinnedMesh: initBones() has been removed.' );
    };
    Object.defineProperty( Curve.prototype, '__arcLengthDivisions', {
    	get: function () {
    		console.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );
    		return this.arcLengthDivisions;
    	},
    	set: function ( value ) {
    		console.warn( 'THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.' );
    		this.arcLengthDivisions = value;
    	}
    } );
    PerspectiveCamera.prototype.setLens = function ( focalLength, filmGauge ) {
    	console.warn( "THREE.PerspectiveCamera.setLens is deprecated. " +
    			"Use .setFocalLength and .filmGauge for a photographic setup." );
    	if ( filmGauge !== undefined ) this.filmGauge = filmGauge;
    	this.setFocalLength( focalLength );
    };
    Object.defineProperties( Light.prototype, {
    	onlyShadow: {
    		set: function () {
    			console.warn( 'THREE.Light: .onlyShadow has been removed.' );
    		}
    	},
    	shadowCameraFov: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowCameraFov is now .shadow.camera.fov.' );
    			this.shadow.camera.fov = value;
    		}
    	},
    	shadowCameraLeft: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowCameraLeft is now .shadow.camera.left.' );
    			this.shadow.camera.left = value;
    		}
    	},
    	shadowCameraRight: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowCameraRight is now .shadow.camera.right.' );
    			this.shadow.camera.right = value;
    		}
    	},
    	shadowCameraTop: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowCameraTop is now .shadow.camera.top.' );
    			this.shadow.camera.top = value;
    		}
    	},
    	shadowCameraBottom: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.' );
    			this.shadow.camera.bottom = value;
    		}
    	},
    	shadowCameraNear: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowCameraNear is now .shadow.camera.near.' );
    			this.shadow.camera.near = value;
    		}
    	},
    	shadowCameraFar: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowCameraFar is now .shadow.camera.far.' );
    			this.shadow.camera.far = value;
    		}
    	},
    	shadowCameraVisible: {
    		set: function () {
    			console.warn( 'THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.' );
    		}
    	},
    	shadowBias: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowBias is now .shadow.bias.' );
    			this.shadow.bias = value;
    		}
    	},
    	shadowDarkness: {
    		set: function () {
    			console.warn( 'THREE.Light: .shadowDarkness has been removed.' );
    		}
    	},
    	shadowMapWidth: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.' );
    			this.shadow.mapSize.width = value;
    		}
    	},
    	shadowMapHeight: {
    		set: function ( value ) {
    			console.warn( 'THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.' );
    			this.shadow.mapSize.height = value;
    		}
    	}
    } );
    Object.defineProperties( BufferAttribute.prototype, {
    	length: {
    		get: function () {
    			console.warn( 'THREE.BufferAttribute: .length has been deprecated. Use .count instead.' );
    			return this.array.length;
    		}
    	},
    	dynamic: {
    		get: function () {
    			console.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );
    			return this.usage === DynamicDrawUsage;
    		},
    		set: function (  ) {
    			console.warn( 'THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.' );
    			this.setUsage( DynamicDrawUsage );
    		}
    	}
    } );
    Object.assign( BufferAttribute.prototype, {
    	setDynamic: function ( value ) {
    		console.warn( 'THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.' );
    		this.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );
    		return this;
    	},
    	copyIndicesArray: function (  ) {
    		console.error( 'THREE.BufferAttribute: .copyIndicesArray() has been removed.' );
    	},
    	setArray: function (  ) {
    		console.error( 'THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );
    	}
    } );
    Object.assign( BufferGeometry.prototype, {
    	addIndex: function ( index ) {
    		console.warn( 'THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().' );
    		this.setIndex( index );
    	},
    	addAttribute: function ( name, attribute ) {
    		console.warn( 'THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().' );
    		if ( ! ( attribute && attribute.isBufferAttribute ) && ! ( attribute && attribute.isInterleavedBufferAttribute ) ) {
    			console.warn( 'THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).' );
    			return this.setAttribute( name, new BufferAttribute( arguments[ 1 ], arguments[ 2 ] ) );
    		}
    		if ( name === 'index' ) {
    			console.warn( 'THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.' );
    			this.setIndex( attribute );
    			return this;
    		}
    		return this.setAttribute( name, attribute );
    	},
    	addDrawCall: function ( start, count, indexOffset ) {
    		if ( indexOffset !== undefined ) {
    			console.warn( 'THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.' );
    		}
    		console.warn( 'THREE.BufferGeometry: .addDrawCall() is now .addGroup().' );
    		this.addGroup( start, count );
    	},
    	clearDrawCalls: function () {
    		console.warn( 'THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().' );
    		this.clearGroups();
    	},
    	computeTangents: function () {
    		console.warn( 'THREE.BufferGeometry: .computeTangents() has been removed.' );
    	},
    	computeOffsets: function () {
    		console.warn( 'THREE.BufferGeometry: .computeOffsets() has been removed.' );
    	},
    	removeAttribute: function ( name ) {
    		console.warn( 'THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().' );
    		return this.deleteAttribute( name );
    	},
    	applyMatrix: function ( matrix ) {
    		console.warn( 'THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().' );
    		return this.applyMatrix4( matrix );
    	}
    } );
    Object.defineProperties( BufferGeometry.prototype, {
    	drawcalls: {
    		get: function () {
    			console.error( 'THREE.BufferGeometry: .drawcalls has been renamed to .groups.' );
    			return this.groups;
    		}
    	},
    	offsets: {
    		get: function () {
    			console.warn( 'THREE.BufferGeometry: .offsets has been renamed to .groups.' );
    			return this.groups;
    		}
    	}
    } );
    Object.defineProperties( InstancedBufferGeometry.prototype, {
    	maxInstancedCount: {
    		get: function () {
    			console.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );
    			return this.instanceCount;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.' );
    			this.instanceCount = value;
    		}
    	}
    } );
    Object.defineProperties( Raycaster.prototype, {
    	linePrecision: {
    		get: function () {
    			console.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );
    			return this.params.Line.threshold;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.' );
    			this.params.Line.threshold = value;
    		}
    	}
    } );
    Object.defineProperties( InterleavedBuffer.prototype, {
    	dynamic: {
    		get: function () {
    			console.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );
    			return this.usage === DynamicDrawUsage;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.' );
    			this.setUsage( value );
    		}
    	}
    } );
    Object.assign( InterleavedBuffer.prototype, {
    	setDynamic: function ( value ) {
    		console.warn( 'THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.' );
    		this.setUsage( value === true ? DynamicDrawUsage : StaticDrawUsage );
    		return this;
    	},
    	setArray: function (  ) {
    		console.error( 'THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers' );
    	}
    } );
    Object.assign( ExtrudeBufferGeometry.prototype, {
    	getArrays: function () {
    		console.error( 'THREE.ExtrudeBufferGeometry: .getArrays() has been removed.' );
    	},
    	addShapeList: function () {
    		console.error( 'THREE.ExtrudeBufferGeometry: .addShapeList() has been removed.' );
    	},
    	addShape: function () {
    		console.error( 'THREE.ExtrudeBufferGeometry: .addShape() has been removed.' );
    	}
    } );
    Object.assign( Scene.prototype, {
    	dispose: function () {
    		console.error( 'THREE.Scene: .dispose() has been removed.' );
    	}
    } );
    Object.defineProperties( Uniform.prototype, {
    	dynamic: {
    		set: function () {
    			console.warn( 'THREE.Uniform: .dynamic has been removed. Use object.onBeforeRender() instead.' );
    		}
    	},
    	onUpdate: {
    		value: function () {
    			console.warn( 'THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.' );
    			return this;
    		}
    	}
    } );
    Object.defineProperties( Material.prototype, {
    	wrapAround: {
    		get: function () {
    			console.warn( 'THREE.Material: .wrapAround has been removed.' );
    		},
    		set: function () {
    			console.warn( 'THREE.Material: .wrapAround has been removed.' );
    		}
    	},
    	overdraw: {
    		get: function () {
    			console.warn( 'THREE.Material: .overdraw has been removed.' );
    		},
    		set: function () {
    			console.warn( 'THREE.Material: .overdraw has been removed.' );
    		}
    	},
    	wrapRGB: {
    		get: function () {
    			console.warn( 'THREE.Material: .wrapRGB has been removed.' );
    			return new Color();
    		}
    	},
    	shading: {
    		get: function () {
    			console.error( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.' );
    			this.flatShading = ( value === FlatShading );
    		}
    	},
    	stencilMask: {
    		get: function () {
    			console.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );
    			return this.stencilFuncMask;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.' );
    			this.stencilFuncMask = value;
    		}
    	}
    } );
    Object.defineProperties( MeshPhongMaterial.prototype, {
    	metal: {
    		get: function () {
    			console.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead.' );
    			return false;
    		},
    		set: function () {
    			console.warn( 'THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead' );
    		}
    	}
    } );
    Object.defineProperties( MeshPhysicalMaterial.prototype, {
    	transparency: {
    		get: function () {
    			console.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );
    			return this.transmission;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.' );
    			this.transmission = value;
    		}
    	}
    } );
    Object.defineProperties( ShaderMaterial.prototype, {
    	derivatives: {
    		get: function () {
    			console.warn( 'THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
    			return this.extensions.derivatives;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.' );
    			this.extensions.derivatives = value;
    		}
    	}
    } );
    Object.assign( WebGLRenderer.prototype, {
    	clearTarget: function ( renderTarget, color, depth, stencil ) {
    		console.warn( 'THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.' );
    		this.setRenderTarget( renderTarget );
    		this.clear( color, depth, stencil );
    	},
    	animate: function ( callback ) {
    		console.warn( 'THREE.WebGLRenderer: .animate() is now .setAnimationLoop().' );
    		this.setAnimationLoop( callback );
    	},
    	getCurrentRenderTarget: function () {
    		console.warn( 'THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().' );
    		return this.getRenderTarget();
    	},
    	getMaxAnisotropy: function () {
    		console.warn( 'THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().' );
    		return this.capabilities.getMaxAnisotropy();
    	},
    	getPrecision: function () {
    		console.warn( 'THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.' );
    		return this.capabilities.precision;
    	},
    	resetGLState: function () {
    		console.warn( 'THREE.WebGLRenderer: .resetGLState() is now .state.reset().' );
    		return this.state.reset();
    	},
    	supportsFloatTextures: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \'OES_texture_float\' ).' );
    		return this.extensions.get( 'OES_texture_float' );
    	},
    	supportsHalfFloatTextures: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \'OES_texture_half_float\' ).' );
    		return this.extensions.get( 'OES_texture_half_float' );
    	},
    	supportsStandardDerivatives: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \'OES_standard_derivatives\' ).' );
    		return this.extensions.get( 'OES_standard_derivatives' );
    	},
    	supportsCompressedTextureS3TC: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \'WEBGL_compressed_texture_s3tc\' ).' );
    		return this.extensions.get( 'WEBGL_compressed_texture_s3tc' );
    	},
    	supportsCompressedTexturePVRTC: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \'WEBGL_compressed_texture_pvrtc\' ).' );
    		return this.extensions.get( 'WEBGL_compressed_texture_pvrtc' );
    	},
    	supportsBlendMinMax: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \'EXT_blend_minmax\' ).' );
    		return this.extensions.get( 'EXT_blend_minmax' );
    	},
    	supportsVertexTextures: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.' );
    		return this.capabilities.vertexTextures;
    	},
    	supportsInstancedArrays: function () {
    		console.warn( 'THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \'ANGLE_instanced_arrays\' ).' );
    		return this.extensions.get( 'ANGLE_instanced_arrays' );
    	},
    	enableScissorTest: function ( boolean ) {
    		console.warn( 'THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().' );
    		this.setScissorTest( boolean );
    	},
    	initMaterial: function () {
    		console.warn( 'THREE.WebGLRenderer: .initMaterial() has been removed.' );
    	},
    	addPrePlugin: function () {
    		console.warn( 'THREE.WebGLRenderer: .addPrePlugin() has been removed.' );
    	},
    	addPostPlugin: function () {
    		console.warn( 'THREE.WebGLRenderer: .addPostPlugin() has been removed.' );
    	},
    	updateShadowMap: function () {
    		console.warn( 'THREE.WebGLRenderer: .updateShadowMap() has been removed.' );
    	},
    	setFaceCulling: function () {
    		console.warn( 'THREE.WebGLRenderer: .setFaceCulling() has been removed.' );
    	},
    	allocTextureUnit: function () {
    		console.warn( 'THREE.WebGLRenderer: .allocTextureUnit() has been removed.' );
    	},
    	setTexture: function () {
    		console.warn( 'THREE.WebGLRenderer: .setTexture() has been removed.' );
    	},
    	setTexture2D: function () {
    		console.warn( 'THREE.WebGLRenderer: .setTexture2D() has been removed.' );
    	},
    	setTextureCube: function () {
    		console.warn( 'THREE.WebGLRenderer: .setTextureCube() has been removed.' );
    	},
    	getActiveMipMapLevel: function () {
    		console.warn( 'THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().' );
    		return this.getActiveMipmapLevel();
    	}
    } );
    Object.defineProperties( WebGLRenderer.prototype, {
    	shadowMapEnabled: {
    		get: function () {
    			return this.shadowMap.enabled;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.' );
    			this.shadowMap.enabled = value;
    		}
    	},
    	shadowMapType: {
    		get: function () {
    			return this.shadowMap.type;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.' );
    			this.shadowMap.type = value;
    		}
    	},
    	shadowMapCullFace: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );
    			return undefined;
    		},
    		set: function (  ) {
    			console.warn( 'THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.' );
    		}
    	},
    	context: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.' );
    			return this.getContext();
    		}
    	},
    	vr: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .vr has been renamed to .xr' );
    			return this.xr;
    		}
    	},
    	gammaInput: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );
    			return false;
    		},
    		set: function () {
    			console.warn( 'THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.' );
    		}
    	},
    	gammaOutput: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );
    			return false;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.' );
    			this.outputEncoding = ( value === true ) ? sRGBEncoding : LinearEncoding;
    		}
    	},
    	toneMappingWhitePoint: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );
    			return 1.0;
    		},
    		set: function () {
    			console.warn( 'THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.' );
    		}
    	},
    } );
    Object.defineProperties( WebGLShadowMap.prototype, {
    	cullFace: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );
    			return undefined;
    		},
    		set: function (  ) {
    			console.warn( 'THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.' );
    		}
    	},
    	renderReverseSided: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );
    			return undefined;
    		},
    		set: function () {
    			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.' );
    		}
    	},
    	renderSingleSided: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );
    			return undefined;
    		},
    		set: function () {
    			console.warn( 'THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.' );
    		}
    	}
    } );
    function WebGLRenderTargetCube( width, height, options ) {
    	console.warn( 'THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).' );
    	return new WebGLCubeRenderTarget( width, options );
    }
    Object.defineProperties( WebGLRenderTarget.prototype, {
    	wrapS: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
    			return this.texture.wrapS;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.' );
    			this.texture.wrapS = value;
    		}
    	},
    	wrapT: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
    			return this.texture.wrapT;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.' );
    			this.texture.wrapT = value;
    		}
    	},
    	magFilter: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
    			return this.texture.magFilter;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.' );
    			this.texture.magFilter = value;
    		}
    	},
    	minFilter: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
    			return this.texture.minFilter;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.' );
    			this.texture.minFilter = value;
    		}
    	},
    	anisotropy: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
    			return this.texture.anisotropy;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.' );
    			this.texture.anisotropy = value;
    		}
    	},
    	offset: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
    			return this.texture.offset;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .offset is now .texture.offset.' );
    			this.texture.offset = value;
    		}
    	},
    	repeat: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
    			return this.texture.repeat;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .repeat is now .texture.repeat.' );
    			this.texture.repeat = value;
    		}
    	},
    	format: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
    			return this.texture.format;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .format is now .texture.format.' );
    			this.texture.format = value;
    		}
    	},
    	type: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
    			return this.texture.type;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .type is now .texture.type.' );
    			this.texture.type = value;
    		}
    	},
    	generateMipmaps: {
    		get: function () {
    			console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
    			return this.texture.generateMipmaps;
    		},
    		set: function ( value ) {
    			console.warn( 'THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.' );
    			this.texture.generateMipmaps = value;
    		}
    	}
    } );
    Object.defineProperties( Audio.prototype, {
    	load: {
    		value: function ( file ) {
    			console.warn( 'THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.' );
    			const scope = this;
    			const audioLoader = new AudioLoader();
    			audioLoader.load( file, function ( buffer ) {
    				scope.setBuffer( buffer );
    			} );
    			return this;
    		}
    	},
    	startTime: {
    		set: function () {
    			console.warn( 'THREE.Audio: .startTime is now .play( delay ).' );
    		}
    	}
    } );
    AudioAnalyser.prototype.getData = function () {
    	console.warn( 'THREE.AudioAnalyser: .getData() is now .getFrequencyData().' );
    	return this.getFrequencyData();
    };
    CubeCamera.prototype.updateCubeMap = function ( renderer, scene ) {
    	console.warn( 'THREE.CubeCamera: .updateCubeMap() is now .update().' );
    	return this.update( renderer, scene );
    };
    const GeometryUtils = {
    	merge: function ( geometry1, geometry2, materialIndexOffset ) {
    		console.warn( 'THREE.GeometryUtils: .merge() has been moved to Geometry. Use geometry.merge( geometry2, matrix, materialIndexOffset ) instead.' );
    		let matrix;
    		if ( geometry2.isMesh ) {
    			geometry2.matrixAutoUpdate && geometry2.updateMatrix();
    			matrix = geometry2.matrix;
    			geometry2 = geometry2.geometry;
    		}
    		geometry1.merge( geometry2, matrix, materialIndexOffset );
    	},
    	center: function ( geometry ) {
    		console.warn( 'THREE.GeometryUtils: .center() has been moved to Geometry. Use geometry.center() instead.' );
    		return geometry.center();
    	}
    };
    ImageUtils.crossOrigin = undefined;
    ImageUtils.loadTexture = function ( url, mapping, onLoad, onError ) {
    	console.warn( 'THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.' );
    	const loader = new TextureLoader();
    	loader.setCrossOrigin( this.crossOrigin );
    	const texture = loader.load( url, onLoad, undefined, onError );
    	if ( mapping ) texture.mapping = mapping;
    	return texture;
    };
    ImageUtils.loadTextureCube = function ( urls, mapping, onLoad, onError ) {
    	console.warn( 'THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.' );
    	const loader = new CubeTextureLoader();
    	loader.setCrossOrigin( this.crossOrigin );
    	const texture = loader.load( urls, onLoad, undefined, onError );
    	if ( mapping ) texture.mapping = mapping;
    	return texture;
    };
    ImageUtils.loadCompressedTexture = function () {
    	console.error( 'THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.' );
    };
    ImageUtils.loadCompressedTextureCube = function () {
    	console.error( 'THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.' );
    };
    function CanvasRenderer() {
    	console.error( 'THREE.CanvasRenderer has been removed' );
    }
    function JSONLoader() {
    	console.error( 'THREE.JSONLoader has been removed.' );
    }
    const SceneUtils = {
    	createMultiMaterialObject: function (  ) {
    		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );
    	},
    	detach: function (  ) {
    		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );
    	},
    	attach: function (  ) {
    		console.error( 'THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js' );
    	}
    };
    function LensFlare() {
    	console.error( 'THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js' );
    }
    if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
    	__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {
    		revision: REVISION,
    	} } ) );
    }
    var three_module = Object.freeze({
    	__proto__: null,
    	ACESFilmicToneMapping: ACESFilmicToneMapping,
    	AddEquation: AddEquation,
    	AddOperation: AddOperation,
    	AdditiveAnimationBlendMode: AdditiveAnimationBlendMode,
    	AdditiveBlending: AdditiveBlending,
    	AlphaFormat: AlphaFormat,
    	AlwaysDepth: AlwaysDepth,
    	AlwaysStencilFunc: AlwaysStencilFunc,
    	AmbientLight: AmbientLight,
    	AmbientLightProbe: AmbientLightProbe,
    	AnimationClip: AnimationClip,
    	AnimationLoader: AnimationLoader,
    	AnimationMixer: AnimationMixer,
    	AnimationObjectGroup: AnimationObjectGroup,
    	AnimationUtils: AnimationUtils,
    	ArcCurve: ArcCurve,
    	ArrayCamera: ArrayCamera,
    	ArrowHelper: ArrowHelper,
    	Audio: Audio,
    	AudioAnalyser: AudioAnalyser,
    	AudioContext: AudioContext,
    	AudioListener: AudioListener,
    	AudioLoader: AudioLoader,
    	AxesHelper: AxesHelper,
    	AxisHelper: AxisHelper,
    	BackSide: BackSide,
    	BasicDepthPacking: BasicDepthPacking,
    	BasicShadowMap: BasicShadowMap,
    	BinaryTextureLoader: BinaryTextureLoader,
    	Bone: Bone,
    	BooleanKeyframeTrack: BooleanKeyframeTrack,
    	BoundingBoxHelper: BoundingBoxHelper,
    	Box2: Box2,
    	Box3: Box3,
    	Box3Helper: Box3Helper,
    	BoxBufferGeometry: BoxBufferGeometry,
    	BoxGeometry: BoxGeometry,
    	BoxHelper: BoxHelper,
    	BufferAttribute: BufferAttribute,
    	BufferGeometry: BufferGeometry,
    	BufferGeometryLoader: BufferGeometryLoader,
    	ByteType: ByteType,
    	Cache: Cache,
    	Camera: Camera,
    	CameraHelper: CameraHelper,
    	CanvasRenderer: CanvasRenderer,
    	CanvasTexture: CanvasTexture,
    	CatmullRomCurve3: CatmullRomCurve3,
    	CineonToneMapping: CineonToneMapping,
    	CircleBufferGeometry: CircleBufferGeometry,
    	CircleGeometry: CircleGeometry,
    	ClampToEdgeWrapping: ClampToEdgeWrapping,
    	Clock: Clock,
    	ClosedSplineCurve3: ClosedSplineCurve3,
    	Color: Color,
    	ColorKeyframeTrack: ColorKeyframeTrack,
    	CompressedTexture: CompressedTexture,
    	CompressedTextureLoader: CompressedTextureLoader,
    	ConeBufferGeometry: ConeBufferGeometry,
    	ConeGeometry: ConeGeometry,
    	CubeCamera: CubeCamera,
    	CubeGeometry: BoxGeometry,
    	CubeReflectionMapping: CubeReflectionMapping,
    	CubeRefractionMapping: CubeRefractionMapping,
    	CubeTexture: CubeTexture,
    	CubeTextureLoader: CubeTextureLoader,
    	CubeUVReflectionMapping: CubeUVReflectionMapping,
    	CubeUVRefractionMapping: CubeUVRefractionMapping,
    	CubicBezierCurve: CubicBezierCurve,
    	CubicBezierCurve3: CubicBezierCurve3,
    	CubicInterpolant: CubicInterpolant,
    	CullFaceBack: CullFaceBack,
    	CullFaceFront: CullFaceFront,
    	CullFaceFrontBack: CullFaceFrontBack,
    	CullFaceNone: CullFaceNone,
    	Curve: Curve,
    	CurvePath: CurvePath,
    	CustomBlending: CustomBlending,
    	CustomToneMapping: CustomToneMapping,
    	CylinderBufferGeometry: CylinderBufferGeometry,
    	CylinderGeometry: CylinderGeometry,
    	Cylindrical: Cylindrical,
    	DataTexture: DataTexture,
    	DataTexture2DArray: DataTexture2DArray,
    	DataTexture3D: DataTexture3D,
    	DataTextureLoader: DataTextureLoader,
    	DecrementStencilOp: DecrementStencilOp,
    	DecrementWrapStencilOp: DecrementWrapStencilOp,
    	DefaultLoadingManager: DefaultLoadingManager,
    	DepthFormat: DepthFormat,
    	DepthStencilFormat: DepthStencilFormat,
    	DepthTexture: DepthTexture,
    	DirectionalLight: DirectionalLight,
    	DirectionalLightHelper: DirectionalLightHelper,
    	DiscreteInterpolant: DiscreteInterpolant,
    	DodecahedronBufferGeometry: DodecahedronBufferGeometry,
    	DodecahedronGeometry: DodecahedronGeometry,
    	DoubleSide: DoubleSide,
    	DstAlphaFactor: DstAlphaFactor,
    	DstColorFactor: DstColorFactor,
    	DynamicBufferAttribute: DynamicBufferAttribute,
    	DynamicCopyUsage: DynamicCopyUsage,
    	DynamicDrawUsage: DynamicDrawUsage,
    	DynamicReadUsage: DynamicReadUsage,
    	EdgesGeometry: EdgesGeometry,
    	EdgesHelper: EdgesHelper,
    	EllipseCurve: EllipseCurve,
    	EqualDepth: EqualDepth,
    	EqualStencilFunc: EqualStencilFunc,
    	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
    	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
    	Euler: Euler,
    	EventDispatcher: EventDispatcher,
    	ExtrudeBufferGeometry: ExtrudeBufferGeometry,
    	ExtrudeGeometry: ExtrudeGeometry,
    	Face3: Face3,
    	Face4: Face4,
    	FaceColors: FaceColors,
    	FileLoader: FileLoader,
    	FlatShading: FlatShading,
    	Float32Attribute: Float32Attribute,
    	Float32BufferAttribute: Float32BufferAttribute,
    	Float64Attribute: Float64Attribute,
    	Float64BufferAttribute: Float64BufferAttribute,
    	FloatType: FloatType,
    	Fog: Fog,
    	FogExp2: FogExp2,
    	Font: Font,
    	FontLoader: FontLoader,
    	FrontSide: FrontSide,
    	Frustum: Frustum,
    	GLBufferAttribute: GLBufferAttribute,
    	GLSL1: GLSL1,
    	GLSL3: GLSL3,
    	GammaEncoding: GammaEncoding,
    	Geometry: Geometry,
    	GeometryUtils: GeometryUtils,
    	GreaterDepth: GreaterDepth,
    	GreaterEqualDepth: GreaterEqualDepth,
    	GreaterEqualStencilFunc: GreaterEqualStencilFunc,
    	GreaterStencilFunc: GreaterStencilFunc,
    	GridHelper: GridHelper,
    	Group: Group,
    	HalfFloatType: HalfFloatType,
    	HemisphereLight: HemisphereLight,
    	HemisphereLightHelper: HemisphereLightHelper,
    	HemisphereLightProbe: HemisphereLightProbe,
    	IcosahedronBufferGeometry: IcosahedronBufferGeometry,
    	IcosahedronGeometry: IcosahedronGeometry,
    	ImageBitmapLoader: ImageBitmapLoader,
    	ImageLoader: ImageLoader,
    	ImageUtils: ImageUtils,
    	ImmediateRenderObject: ImmediateRenderObject,
    	IncrementStencilOp: IncrementStencilOp,
    	IncrementWrapStencilOp: IncrementWrapStencilOp,
    	InstancedBufferAttribute: InstancedBufferAttribute,
    	InstancedBufferGeometry: InstancedBufferGeometry,
    	InstancedInterleavedBuffer: InstancedInterleavedBuffer,
    	InstancedMesh: InstancedMesh,
    	Int16Attribute: Int16Attribute,
    	Int16BufferAttribute: Int16BufferAttribute,
    	Int32Attribute: Int32Attribute,
    	Int32BufferAttribute: Int32BufferAttribute,
    	Int8Attribute: Int8Attribute,
    	Int8BufferAttribute: Int8BufferAttribute,
    	IntType: IntType,
    	InterleavedBuffer: InterleavedBuffer,
    	InterleavedBufferAttribute: InterleavedBufferAttribute,
    	Interpolant: Interpolant,
    	InterpolateDiscrete: InterpolateDiscrete,
    	InterpolateLinear: InterpolateLinear,
    	InterpolateSmooth: InterpolateSmooth,
    	InvertStencilOp: InvertStencilOp,
    	JSONLoader: JSONLoader,
    	KeepStencilOp: KeepStencilOp,
    	KeyframeTrack: KeyframeTrack,
    	LOD: LOD,
    	LatheBufferGeometry: LatheBufferGeometry,
    	LatheGeometry: LatheGeometry,
    	Layers: Layers,
    	LensFlare: LensFlare,
    	LessDepth: LessDepth,
    	LessEqualDepth: LessEqualDepth,
    	LessEqualStencilFunc: LessEqualStencilFunc,
    	LessStencilFunc: LessStencilFunc,
    	Light: Light,
    	LightProbe: LightProbe,
    	LightShadow: LightShadow,
    	Line: Line,
    	Line3: Line3,
    	LineBasicMaterial: LineBasicMaterial,
    	LineCurve: LineCurve,
    	LineCurve3: LineCurve3,
    	LineDashedMaterial: LineDashedMaterial,
    	LineLoop: LineLoop,
    	LinePieces: LinePieces,
    	LineSegments: LineSegments,
    	LineStrip: LineStrip,
    	LinearEncoding: LinearEncoding,
    	LinearFilter: LinearFilter,
    	LinearInterpolant: LinearInterpolant,
    	LinearMipMapLinearFilter: LinearMipMapLinearFilter,
    	LinearMipMapNearestFilter: LinearMipMapNearestFilter,
    	LinearMipmapLinearFilter: LinearMipmapLinearFilter,
    	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
    	LinearToneMapping: LinearToneMapping,
    	Loader: Loader,
    	LoaderUtils: LoaderUtils,
    	LoadingManager: LoadingManager,
    	LogLuvEncoding: LogLuvEncoding,
    	LoopOnce: LoopOnce,
    	LoopPingPong: LoopPingPong,
    	LoopRepeat: LoopRepeat,
    	LuminanceAlphaFormat: LuminanceAlphaFormat,
    	LuminanceFormat: LuminanceFormat,
    	MOUSE: MOUSE,
    	Material: Material,
    	MaterialLoader: MaterialLoader,
    	Math: MathUtils,
    	MathUtils: MathUtils,
    	Matrix3: Matrix3,
    	Matrix4: Matrix4,
    	MaxEquation: MaxEquation,
    	Mesh: Mesh,
    	MeshBasicMaterial: MeshBasicMaterial,
    	MeshDepthMaterial: MeshDepthMaterial,
    	MeshDistanceMaterial: MeshDistanceMaterial,
    	MeshFaceMaterial: MeshFaceMaterial,
    	MeshLambertMaterial: MeshLambertMaterial,
    	MeshMatcapMaterial: MeshMatcapMaterial,
    	MeshNormalMaterial: MeshNormalMaterial,
    	MeshPhongMaterial: MeshPhongMaterial,
    	MeshPhysicalMaterial: MeshPhysicalMaterial,
    	MeshStandardMaterial: MeshStandardMaterial,
    	MeshToonMaterial: MeshToonMaterial,
    	MinEquation: MinEquation,
    	MirroredRepeatWrapping: MirroredRepeatWrapping,
    	MixOperation: MixOperation,
    	MultiMaterial: MultiMaterial,
    	MultiplyBlending: MultiplyBlending,
    	MultiplyOperation: MultiplyOperation,
    	NearestFilter: NearestFilter,
    	NearestMipMapLinearFilter: NearestMipMapLinearFilter,
    	NearestMipMapNearestFilter: NearestMipMapNearestFilter,
    	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
    	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
    	NeverDepth: NeverDepth,
    	NeverStencilFunc: NeverStencilFunc,
    	NoBlending: NoBlending,
    	NoColors: NoColors,
    	NoToneMapping: NoToneMapping,
    	NormalAnimationBlendMode: NormalAnimationBlendMode,
    	NormalBlending: NormalBlending,
    	NotEqualDepth: NotEqualDepth,
    	NotEqualStencilFunc: NotEqualStencilFunc,
    	NumberKeyframeTrack: NumberKeyframeTrack,
    	Object3D: Object3D,
    	ObjectLoader: ObjectLoader,
    	ObjectSpaceNormalMap: ObjectSpaceNormalMap,
    	OctahedronBufferGeometry: OctahedronBufferGeometry,
    	OctahedronGeometry: OctahedronGeometry,
    	OneFactor: OneFactor,
    	OneMinusDstAlphaFactor: OneMinusDstAlphaFactor,
    	OneMinusDstColorFactor: OneMinusDstColorFactor,
    	OneMinusSrcAlphaFactor: OneMinusSrcAlphaFactor,
    	OneMinusSrcColorFactor: OneMinusSrcColorFactor,
    	OrthographicCamera: OrthographicCamera,
    	PCFShadowMap: PCFShadowMap,
    	PCFSoftShadowMap: PCFSoftShadowMap,
    	PMREMGenerator: PMREMGenerator,
    	ParametricBufferGeometry: ParametricBufferGeometry,
    	ParametricGeometry: ParametricGeometry,
    	Particle: Particle,
    	ParticleBasicMaterial: ParticleBasicMaterial,
    	ParticleSystem: ParticleSystem,
    	ParticleSystemMaterial: ParticleSystemMaterial,
    	Path: Path,
    	PerspectiveCamera: PerspectiveCamera,
    	Plane: Plane,
    	PlaneBufferGeometry: PlaneBufferGeometry,
    	PlaneGeometry: PlaneGeometry,
    	PlaneHelper: PlaneHelper,
    	PointCloud: PointCloud,
    	PointCloudMaterial: PointCloudMaterial,
    	PointLight: PointLight,
    	PointLightHelper: PointLightHelper,
    	Points: Points,
    	PointsMaterial: PointsMaterial,
    	PolarGridHelper: PolarGridHelper,
    	PolyhedronBufferGeometry: PolyhedronBufferGeometry,
    	PolyhedronGeometry: PolyhedronGeometry,
    	PositionalAudio: PositionalAudio,
    	PropertyBinding: PropertyBinding,
    	PropertyMixer: PropertyMixer,
    	QuadraticBezierCurve: QuadraticBezierCurve,
    	QuadraticBezierCurve3: QuadraticBezierCurve3,
    	Quaternion: Quaternion,
    	QuaternionKeyframeTrack: QuaternionKeyframeTrack,
    	QuaternionLinearInterpolant: QuaternionLinearInterpolant,
    	REVISION: REVISION,
    	RGBADepthPacking: RGBADepthPacking,
    	RGBAFormat: RGBAFormat,
    	RGBAIntegerFormat: RGBAIntegerFormat,
    	RGBA_ASTC_10x10_Format: RGBA_ASTC_10x10_Format,
    	RGBA_ASTC_10x5_Format: RGBA_ASTC_10x5_Format,
    	RGBA_ASTC_10x6_Format: RGBA_ASTC_10x6_Format,
    	RGBA_ASTC_10x8_Format: RGBA_ASTC_10x8_Format,
    	RGBA_ASTC_12x10_Format: RGBA_ASTC_12x10_Format,
    	RGBA_ASTC_12x12_Format: RGBA_ASTC_12x12_Format,
    	RGBA_ASTC_4x4_Format: RGBA_ASTC_4x4_Format,
    	RGBA_ASTC_5x4_Format: RGBA_ASTC_5x4_Format,
    	RGBA_ASTC_5x5_Format: RGBA_ASTC_5x5_Format,
    	RGBA_ASTC_6x5_Format: RGBA_ASTC_6x5_Format,
    	RGBA_ASTC_6x6_Format: RGBA_ASTC_6x6_Format,
    	RGBA_ASTC_8x5_Format: RGBA_ASTC_8x5_Format,
    	RGBA_ASTC_8x6_Format: RGBA_ASTC_8x6_Format,
    	RGBA_ASTC_8x8_Format: RGBA_ASTC_8x8_Format,
    	RGBA_BPTC_Format: RGBA_BPTC_Format,
    	RGBA_ETC2_EAC_Format: RGBA_ETC2_EAC_Format,
    	RGBA_PVRTC_2BPPV1_Format: RGBA_PVRTC_2BPPV1_Format,
    	RGBA_PVRTC_4BPPV1_Format: RGBA_PVRTC_4BPPV1_Format,
    	RGBA_S3TC_DXT1_Format: RGBA_S3TC_DXT1_Format,
    	RGBA_S3TC_DXT3_Format: RGBA_S3TC_DXT3_Format,
    	RGBA_S3TC_DXT5_Format: RGBA_S3TC_DXT5_Format,
    	RGBDEncoding: RGBDEncoding,
    	RGBEEncoding: RGBEEncoding,
    	RGBEFormat: RGBEFormat,
    	RGBFormat: RGBFormat,
    	RGBIntegerFormat: RGBIntegerFormat,
    	RGBM16Encoding: RGBM16Encoding,
    	RGBM7Encoding: RGBM7Encoding,
    	RGB_ETC1_Format: RGB_ETC1_Format,
    	RGB_ETC2_Format: RGB_ETC2_Format,
    	RGB_PVRTC_2BPPV1_Format: RGB_PVRTC_2BPPV1_Format,
    	RGB_PVRTC_4BPPV1_Format: RGB_PVRTC_4BPPV1_Format,
    	RGB_S3TC_DXT1_Format: RGB_S3TC_DXT1_Format,
    	RGFormat: RGFormat,
    	RGIntegerFormat: RGIntegerFormat,
    	RawShaderMaterial: RawShaderMaterial,
    	Ray: Ray,
    	Raycaster: Raycaster,
    	RectAreaLight: RectAreaLight,
    	RedFormat: RedFormat,
    	RedIntegerFormat: RedIntegerFormat,
    	ReinhardToneMapping: ReinhardToneMapping,
    	RepeatWrapping: RepeatWrapping,
    	ReplaceStencilOp: ReplaceStencilOp,
    	ReverseSubtractEquation: ReverseSubtractEquation,
    	RingBufferGeometry: RingBufferGeometry,
    	RingGeometry: RingGeometry,
    	SRGB8_ALPHA8_ASTC_10x10_Format: SRGB8_ALPHA8_ASTC_10x10_Format,
    	SRGB8_ALPHA8_ASTC_10x5_Format: SRGB8_ALPHA8_ASTC_10x5_Format,
    	SRGB8_ALPHA8_ASTC_10x6_Format: SRGB8_ALPHA8_ASTC_10x6_Format,
    	SRGB8_ALPHA8_ASTC_10x8_Format: SRGB8_ALPHA8_ASTC_10x8_Format,
    	SRGB8_ALPHA8_ASTC_12x10_Format: SRGB8_ALPHA8_ASTC_12x10_Format,
    	SRGB8_ALPHA8_ASTC_12x12_Format: SRGB8_ALPHA8_ASTC_12x12_Format,
    	SRGB8_ALPHA8_ASTC_4x4_Format: SRGB8_ALPHA8_ASTC_4x4_Format,
    	SRGB8_ALPHA8_ASTC_5x4_Format: SRGB8_ALPHA8_ASTC_5x4_Format,
    	SRGB8_ALPHA8_ASTC_5x5_Format: SRGB8_ALPHA8_ASTC_5x5_Format,
    	SRGB8_ALPHA8_ASTC_6x5_Format: SRGB8_ALPHA8_ASTC_6x5_Format,
    	SRGB8_ALPHA8_ASTC_6x6_Format: SRGB8_ALPHA8_ASTC_6x6_Format,
    	SRGB8_ALPHA8_ASTC_8x5_Format: SRGB8_ALPHA8_ASTC_8x5_Format,
    	SRGB8_ALPHA8_ASTC_8x6_Format: SRGB8_ALPHA8_ASTC_8x6_Format,
    	SRGB8_ALPHA8_ASTC_8x8_Format: SRGB8_ALPHA8_ASTC_8x8_Format,
    	Scene: Scene,
    	SceneUtils: SceneUtils,
    	ShaderChunk: ShaderChunk,
    	ShaderLib: ShaderLib,
    	ShaderMaterial: ShaderMaterial,
    	ShadowMaterial: ShadowMaterial,
    	Shape: Shape,
    	ShapeBufferGeometry: ShapeBufferGeometry,
    	ShapeGeometry: ShapeGeometry,
    	ShapePath: ShapePath,
    	ShapeUtils: ShapeUtils,
    	ShortType: ShortType,
    	Skeleton: Skeleton,
    	SkeletonHelper: SkeletonHelper,
    	SkinnedMesh: SkinnedMesh,
    	SmoothShading: SmoothShading,
    	Sphere: Sphere,
    	SphereBufferGeometry: SphereBufferGeometry,
    	SphereGeometry: SphereGeometry,
    	Spherical: Spherical,
    	SphericalHarmonics3: SphericalHarmonics3,
    	Spline: Spline,
    	SplineCurve: SplineCurve,
    	SplineCurve3: SplineCurve3,
    	SpotLight: SpotLight,
    	SpotLightHelper: SpotLightHelper,
    	Sprite: Sprite,
    	SpriteMaterial: SpriteMaterial,
    	SrcAlphaFactor: SrcAlphaFactor,
    	SrcAlphaSaturateFactor: SrcAlphaSaturateFactor,
    	SrcColorFactor: SrcColorFactor,
    	StaticCopyUsage: StaticCopyUsage,
    	StaticDrawUsage: StaticDrawUsage,
    	StaticReadUsage: StaticReadUsage,
    	StereoCamera: StereoCamera,
    	StreamCopyUsage: StreamCopyUsage,
    	StreamDrawUsage: StreamDrawUsage,
    	StreamReadUsage: StreamReadUsage,
    	StringKeyframeTrack: StringKeyframeTrack,
    	SubtractEquation: SubtractEquation,
    	SubtractiveBlending: SubtractiveBlending,
    	TOUCH: TOUCH,
    	TangentSpaceNormalMap: TangentSpaceNormalMap,
    	TetrahedronBufferGeometry: TetrahedronBufferGeometry,
    	TetrahedronGeometry: TetrahedronGeometry,
    	TextBufferGeometry: TextBufferGeometry,
    	TextGeometry: TextGeometry,
    	Texture: Texture,
    	TextureLoader: TextureLoader,
    	TorusBufferGeometry: TorusBufferGeometry,
    	TorusGeometry: TorusGeometry,
    	TorusKnotBufferGeometry: TorusKnotBufferGeometry,
    	TorusKnotGeometry: TorusKnotGeometry,
    	Triangle: Triangle,
    	TriangleFanDrawMode: TriangleFanDrawMode,
    	TriangleStripDrawMode: TriangleStripDrawMode,
    	TrianglesDrawMode: TrianglesDrawMode,
    	TubeBufferGeometry: TubeBufferGeometry,
    	TubeGeometry: TubeGeometry,
    	UVMapping: UVMapping,
    	Uint16Attribute: Uint16Attribute,
    	Uint16BufferAttribute: Uint16BufferAttribute,
    	Uint32Attribute: Uint32Attribute,
    	Uint32BufferAttribute: Uint32BufferAttribute,
    	Uint8Attribute: Uint8Attribute,
    	Uint8BufferAttribute: Uint8BufferAttribute,
    	Uint8ClampedAttribute: Uint8ClampedAttribute,
    	Uint8ClampedBufferAttribute: Uint8ClampedBufferAttribute,
    	Uniform: Uniform,
    	UniformsLib: UniformsLib,
    	UniformsUtils: UniformsUtils,
    	UnsignedByteType: UnsignedByteType,
    	UnsignedInt248Type: UnsignedInt248Type,
    	UnsignedIntType: UnsignedIntType,
    	UnsignedShort4444Type: UnsignedShort4444Type,
    	UnsignedShort5551Type: UnsignedShort5551Type,
    	UnsignedShort565Type: UnsignedShort565Type,
    	UnsignedShortType: UnsignedShortType,
    	VSMShadowMap: VSMShadowMap,
    	Vector2: Vector2,
    	Vector3: Vector3,
    	Vector4: Vector4,
    	VectorKeyframeTrack: VectorKeyframeTrack,
    	Vertex: Vertex,
    	VertexColors: VertexColors,
    	VideoTexture: VideoTexture,
    	WebGL1Renderer: WebGL1Renderer,
    	WebGLCubeRenderTarget: WebGLCubeRenderTarget,
    	WebGLMultisampleRenderTarget: WebGLMultisampleRenderTarget,
    	WebGLRenderTarget: WebGLRenderTarget,
    	WebGLRenderTargetCube: WebGLRenderTargetCube,
    	WebGLRenderer: WebGLRenderer,
    	WebGLUtils: WebGLUtils,
    	WireframeGeometry: WireframeGeometry,
    	WireframeHelper: WireframeHelper,
    	WrapAroundEnding: WrapAroundEnding,
    	XHRLoader: XHRLoader,
    	ZeroCurvatureEnding: ZeroCurvatureEnding,
    	ZeroFactor: ZeroFactor,
    	ZeroSlopeEnding: ZeroSlopeEnding,
    	ZeroStencilOp: ZeroStencilOp,
    	sRGBEncoding: sRGBEncoding
    });
    var OrbitControls = function ( object, domElement ) {
    	if ( domElement === undefined ) console.warn( 'THREE.OrbitControls: The second parameter "domElement" is now mandatory.' );
    	if ( domElement === document ) console.error( 'THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.' );
    	this.object = object;
    	this.domElement = domElement;
    	this.enabled = true;
    	this.target = new Vector3();
    	this.minDistance = 0;
    	this.maxDistance = Infinity;
    	this.minZoom = 0;
    	this.maxZoom = Infinity;
    	this.minPolarAngle = 0;
    	this.maxPolarAngle = Math.PI;
    	this.minAzimuthAngle = - Infinity;
    	this.maxAzimuthAngle = Infinity;
    	this.enableDamping = false;
    	this.dampingFactor = 0.05;
    	this.enableZoom = true;
    	this.zoomSpeed = 1.0;
    	this.enableRotate = true;
    	this.rotateSpeed = 1.0;
    	this.enablePan = true;
    	this.panSpeed = 1.0;
    	this.screenSpacePanning = true;
    	this.keyPanSpeed = 7.0;
    	this.autoRotate = false;
    	this.autoRotateSpeed = 2.0;
    	this.enableKeys = true;
    	this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
    	this.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };
    	this.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };
    	this.target0 = this.target.clone();
    	this.position0 = this.object.position.clone();
    	this.zoom0 = this.object.zoom;
    	this.getPolarAngle = function () {
    		return spherical.phi;
    	};
    	this.getAzimuthalAngle = function () {
    		return spherical.theta;
    	};
    	this.saveState = function () {
    		scope.target0.copy( scope.target );
    		scope.position0.copy( scope.object.position );
    		scope.zoom0 = scope.object.zoom;
    	};
    	this.reset = function () {
    		scope.target.copy( scope.target0 );
    		scope.object.position.copy( scope.position0 );
    		scope.object.zoom = scope.zoom0;
    		scope.object.updateProjectionMatrix();
    		scope.dispatchEvent( changeEvent );
    		scope.update();
    		state = STATE.NONE;
    	};
    	this.update = function () {
    		var offset = new Vector3();
    		var quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) );
    		var quatInverse = quat.clone().inverse();
    		var lastPosition = new Vector3();
    		var lastQuaternion = new Quaternion();
    		var twoPI = 2 * Math.PI;
    		return function update() {
    			var position = scope.object.position;
    			offset.copy( position ).sub( scope.target );
    			offset.applyQuaternion( quat );
    			spherical.setFromVector3( offset );
    			if ( scope.autoRotate && state === STATE.NONE ) {
    				rotateLeft( getAutoRotationAngle() );
    			}
    			if ( scope.enableDamping ) {
    				spherical.theta += sphericalDelta.theta * scope.dampingFactor;
    				spherical.phi += sphericalDelta.phi * scope.dampingFactor;
    			} else {
    				spherical.theta += sphericalDelta.theta;
    				spherical.phi += sphericalDelta.phi;
    			}
    			var min = scope.minAzimuthAngle;
    			var max = scope.maxAzimuthAngle;
    			if ( isFinite( min ) && isFinite( max ) ) {
    				if ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI;
    				if ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI;
    				if ( min < max ) {
    					spherical.theta = Math.max( min, Math.min( max, spherical.theta ) );
    				} else {
    					spherical.theta = ( spherical.theta > ( min + max ) / 2 ) ?
    						Math.max( min, spherical.theta ) :
    						Math.min( max, spherical.theta );
    				}
    			}
    			spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );
    			spherical.makeSafe();
    			spherical.radius *= scale;
    			spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );
    			if ( scope.enableDamping === true ) {
    				scope.target.addScaledVector( panOffset, scope.dampingFactor );
    			} else {
    				scope.target.add( panOffset );
    			}
    			offset.setFromSpherical( spherical );
    			offset.applyQuaternion( quatInverse );
    			position.copy( scope.target ).add( offset );
    			scope.object.lookAt( scope.target );
    			if ( scope.enableDamping === true ) {
    				sphericalDelta.theta *= ( 1 - scope.dampingFactor );
    				sphericalDelta.phi *= ( 1 - scope.dampingFactor );
    				panOffset.multiplyScalar( 1 - scope.dampingFactor );
    			} else {
    				sphericalDelta.set( 0, 0, 0 );
    				panOffset.set( 0, 0, 0 );
    			}
    			scale = 1;
    			if ( zoomChanged ||
    				lastPosition.distanceToSquared( scope.object.position ) > EPS ||
    				8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
    				scope.dispatchEvent( changeEvent );
    				lastPosition.copy( scope.object.position );
    				lastQuaternion.copy( scope.object.quaternion );
    				zoomChanged = false;
    				return true;
    			}
    			return false;
    		};
    	}();
    	this.dispose = function () {
    		scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );
    		scope.domElement.removeEventListener( 'pointerdown', onPointerDown, false );
    		scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );
    		scope.domElement.removeEventListener( 'touchstart', onTouchStart, false );
    		scope.domElement.removeEventListener( 'touchend', onTouchEnd, false );
    		scope.domElement.removeEventListener( 'touchmove', onTouchMove, false );
    		scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );
    		scope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );
    		scope.domElement.removeEventListener( 'keydown', onKeyDown, false );
    	};
    	var scope = this;
    	var changeEvent = { type: 'change' };
    	var startEvent = { type: 'start' };
    	var endEvent = { type: 'end' };
    	var STATE = {
    		NONE: - 1,
    		ROTATE: 0,
    		DOLLY: 1,
    		PAN: 2,
    		TOUCH_ROTATE: 3,
    		TOUCH_PAN: 4,
    		TOUCH_DOLLY_PAN: 5,
    		TOUCH_DOLLY_ROTATE: 6
    	};
    	var state = STATE.NONE;
    	var EPS = 0.000001;
    	var spherical = new Spherical();
    	var sphericalDelta = new Spherical();
    	var scale = 1;
    	var panOffset = new Vector3();
    	var zoomChanged = false;
    	var rotateStart = new Vector2();
    	var rotateEnd = new Vector2();
    	var rotateDelta = new Vector2();
    	var panStart = new Vector2();
    	var panEnd = new Vector2();
    	var panDelta = new Vector2();
    	var dollyStart = new Vector2();
    	var dollyEnd = new Vector2();
    	var dollyDelta = new Vector2();
    	function getAutoRotationAngle() {
    		return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
    	}
    	function getZoomScale() {
    		return Math.pow( 0.95, scope.zoomSpeed );
    	}
    	function rotateLeft( angle ) {
    		sphericalDelta.theta -= angle;
    	}
    	function rotateUp( angle ) {
    		sphericalDelta.phi -= angle;
    	}
    	var panLeft = function () {
    		var v = new Vector3();
    		return function panLeft( distance, objectMatrix ) {
    			v.setFromMatrixColumn( objectMatrix, 0 );
    			v.multiplyScalar( - distance );
    			panOffset.add( v );
    		};
    	}();
    	var panUp = function () {
    		var v = new Vector3();
    		return function panUp( distance, objectMatrix ) {
    			if ( scope.screenSpacePanning === true ) {
    				v.setFromMatrixColumn( objectMatrix, 1 );
    			} else {
    				v.setFromMatrixColumn( objectMatrix, 0 );
    				v.crossVectors( scope.object.up, v );
    			}
    			v.multiplyScalar( distance );
    			panOffset.add( v );
    		};
    	}();
    	var pan = function () {
    		var offset = new Vector3();
    		return function pan( deltaX, deltaY ) {
    			var element = scope.domElement;
    			if ( scope.object.isPerspectiveCamera ) {
    				var position = scope.object.position;
    				offset.copy( position ).sub( scope.target );
    				var targetDistance = offset.length();
    				targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
    				panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
    				panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );
    			} else if ( scope.object.isOrthographicCamera ) {
    				panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
    				panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );
    			} else {
    				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
    				scope.enablePan = false;
    			}
    		};
    	}();
    	function dollyOut( dollyScale ) {
    		if ( scope.object.isPerspectiveCamera ) {
    			scale /= dollyScale;
    		} else if ( scope.object.isOrthographicCamera ) {
    			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
    			scope.object.updateProjectionMatrix();
    			zoomChanged = true;
    		} else {
    			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
    			scope.enableZoom = false;
    		}
    	}
    	function dollyIn( dollyScale ) {
    		if ( scope.object.isPerspectiveCamera ) {
    			scale *= dollyScale;
    		} else if ( scope.object.isOrthographicCamera ) {
    			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
    			scope.object.updateProjectionMatrix();
    			zoomChanged = true;
    		} else {
    			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
    			scope.enableZoom = false;
    		}
    	}
    	function handleMouseDownRotate( event ) {
    		rotateStart.set( event.clientX, event.clientY );
    	}
    	function handleMouseDownDolly( event ) {
    		dollyStart.set( event.clientX, event.clientY );
    	}
    	function handleMouseDownPan( event ) {
    		panStart.set( event.clientX, event.clientY );
    	}
    	function handleMouseMoveRotate( event ) {
    		rotateEnd.set( event.clientX, event.clientY );
    		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
    		var element = scope.domElement;
    		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight );
    		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
    		rotateStart.copy( rotateEnd );
    		scope.update();
    	}
    	function handleMouseMoveDolly( event ) {
    		dollyEnd.set( event.clientX, event.clientY );
    		dollyDelta.subVectors( dollyEnd, dollyStart );
    		if ( dollyDelta.y > 0 ) {
    			dollyOut( getZoomScale() );
    		} else if ( dollyDelta.y < 0 ) {
    			dollyIn( getZoomScale() );
    		}
    		dollyStart.copy( dollyEnd );
    		scope.update();
    	}
    	function handleMouseMovePan( event ) {
    		panEnd.set( event.clientX, event.clientY );
    		panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
    		pan( panDelta.x, panDelta.y );
    		panStart.copy( panEnd );
    		scope.update();
    	}
    	function handleMouseWheel( event ) {
    		if ( event.deltaY < 0 ) {
    			dollyIn( getZoomScale() );
    		} else if ( event.deltaY > 0 ) {
    			dollyOut( getZoomScale() );
    		}
    		scope.update();
    	}
    	function handleKeyDown( event ) {
    		var needsUpdate = false;
    		switch ( event.keyCode ) {
    			case scope.keys.UP:
    				pan( 0, scope.keyPanSpeed );
    				needsUpdate = true;
    				break;
    			case scope.keys.BOTTOM:
    				pan( 0, - scope.keyPanSpeed );
    				needsUpdate = true;
    				break;
    			case scope.keys.LEFT:
    				pan( scope.keyPanSpeed, 0 );
    				needsUpdate = true;
    				break;
    			case scope.keys.RIGHT:
    				pan( - scope.keyPanSpeed, 0 );
    				needsUpdate = true;
    				break;
    		}
    		if ( needsUpdate ) {
    			event.preventDefault();
    			scope.update();
    		}
    	}
    	function handleTouchStartRotate( event ) {
    		if ( event.touches.length == 1 ) {
    			rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
    		} else {
    			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
    			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
    			rotateStart.set( x, y );
    		}
    	}
    	function handleTouchStartPan( event ) {
    		if ( event.touches.length == 1 ) {
    			panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
    		} else {
    			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
    			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
    			panStart.set( x, y );
    		}
    	}
    	function handleTouchStartDolly( event ) {
    		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
    		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
    		var distance = Math.sqrt( dx * dx + dy * dy );
    		dollyStart.set( 0, distance );
    	}
    	function handleTouchStartDollyPan( event ) {
    		if ( scope.enableZoom ) handleTouchStartDolly( event );
    		if ( scope.enablePan ) handleTouchStartPan( event );
    	}
    	function handleTouchStartDollyRotate( event ) {
    		if ( scope.enableZoom ) handleTouchStartDolly( event );
    		if ( scope.enableRotate ) handleTouchStartRotate( event );
    	}
    	function handleTouchMoveRotate( event ) {
    		if ( event.touches.length == 1 ) {
    			rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
    		} else {
    			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
    			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
    			rotateEnd.set( x, y );
    		}
    		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
    		var element = scope.domElement;
    		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight );
    		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
    		rotateStart.copy( rotateEnd );
    	}
    	function handleTouchMovePan( event ) {
    		if ( event.touches.length == 1 ) {
    			panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
    		} else {
    			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
    			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
    			panEnd.set( x, y );
    		}
    		panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
    		pan( panDelta.x, panDelta.y );
    		panStart.copy( panEnd );
    	}
    	function handleTouchMoveDolly( event ) {
    		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
    		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
    		var distance = Math.sqrt( dx * dx + dy * dy );
    		dollyEnd.set( 0, distance );
    		dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );
    		dollyOut( dollyDelta.y );
    		dollyStart.copy( dollyEnd );
    	}
    	function handleTouchMoveDollyPan( event ) {
    		if ( scope.enableZoom ) handleTouchMoveDolly( event );
    		if ( scope.enablePan ) handleTouchMovePan( event );
    	}
    	function handleTouchMoveDollyRotate( event ) {
    		if ( scope.enableZoom ) handleTouchMoveDolly( event );
    		if ( scope.enableRotate ) handleTouchMoveRotate( event );
    	}
    	function onPointerDown( event ) {
    		if ( scope.enabled === false ) return;
    		switch ( event.pointerType ) {
    			case 'mouse':
    				onMouseDown( event );
    				break;
    		}
    	}
    	function onPointerMove( event ) {
    		if ( scope.enabled === false ) return;
    		switch ( event.pointerType ) {
    			case 'mouse':
    				onMouseMove( event );
    				break;
    		}
    	}
    	function onPointerUp( event ) {
    		if ( scope.enabled === false ) return;
    		switch ( event.pointerType ) {
    			case 'mouse':
    				onMouseUp();
    				break;
    		}
    	}
    	function onMouseDown( event ) {
    		event.preventDefault();
    		scope.domElement.focus ? scope.domElement.focus() : window.focus();
    		var mouseAction;
    		switch ( event.button ) {
    			case 0:
    				mouseAction = scope.mouseButtons.LEFT;
    				break;
    			case 1:
    				mouseAction = scope.mouseButtons.MIDDLE;
    				break;
    			case 2:
    				mouseAction = scope.mouseButtons.RIGHT;
    				break;
    			default:
    				mouseAction = - 1;
    		}
    		switch ( mouseAction ) {
    			case MOUSE.DOLLY:
    				if ( scope.enableZoom === false ) return;
    				handleMouseDownDolly( event );
    				state = STATE.DOLLY;
    				break;
    			case MOUSE.ROTATE:
    				if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
    					if ( scope.enablePan === false ) return;
    					handleMouseDownPan( event );
    					state = STATE.PAN;
    				} else {
    					if ( scope.enableRotate === false ) return;
    					handleMouseDownRotate( event );
    					state = STATE.ROTATE;
    				}
    				break;
    			case MOUSE.PAN:
    				if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
    					if ( scope.enableRotate === false ) return;
    					handleMouseDownRotate( event );
    					state = STATE.ROTATE;
    				} else {
    					if ( scope.enablePan === false ) return;
    					handleMouseDownPan( event );
    					state = STATE.PAN;
    				}
    				break;
    			default:
    				state = STATE.NONE;
    		}
    		if ( state !== STATE.NONE ) {
    			scope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, false );
    			scope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp, false );
    			scope.dispatchEvent( startEvent );
    		}
    	}
    	function onMouseMove( event ) {
    		if ( scope.enabled === false ) return;
    		event.preventDefault();
    		switch ( state ) {
    			case STATE.ROTATE:
    				if ( scope.enableRotate === false ) return;
    				handleMouseMoveRotate( event );
    				break;
    			case STATE.DOLLY:
    				if ( scope.enableZoom === false ) return;
    				handleMouseMoveDolly( event );
    				break;
    			case STATE.PAN:
    				if ( scope.enablePan === false ) return;
    				handleMouseMovePan( event );
    				break;
    		}
    	}
    	function onMouseUp( event ) {
    		if ( scope.enabled === false ) return;
    		scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );
    		scope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );
    		scope.dispatchEvent( endEvent );
    		state = STATE.NONE;
    	}
    	function onMouseWheel( event ) {
    		if ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;
    		event.preventDefault();
    		event.stopPropagation();
    		scope.dispatchEvent( startEvent );
    		handleMouseWheel( event );
    		scope.dispatchEvent( endEvent );
    	}
    	function onKeyDown( event ) {
    		if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
    		handleKeyDown( event );
    	}
    	function onTouchStart( event ) {
    		if ( scope.enabled === false ) return;
    		event.preventDefault();
    		switch ( event.touches.length ) {
    			case 1:
    				switch ( scope.touches.ONE ) {
    					case TOUCH.ROTATE:
    						if ( scope.enableRotate === false ) return;
    						handleTouchStartRotate( event );
    						state = STATE.TOUCH_ROTATE;
    						break;
    					case TOUCH.PAN:
    						if ( scope.enablePan === false ) return;
    						handleTouchStartPan( event );
    						state = STATE.TOUCH_PAN;
    						break;
    					default:
    						state = STATE.NONE;
    				}
    				break;
    			case 2:
    				switch ( scope.touches.TWO ) {
    					case TOUCH.DOLLY_PAN:
    						if ( scope.enableZoom === false && scope.enablePan === false ) return;
    						handleTouchStartDollyPan( event );
    						state = STATE.TOUCH_DOLLY_PAN;
    						break;
    					case TOUCH.DOLLY_ROTATE:
    						if ( scope.enableZoom === false && scope.enableRotate === false ) return;
    						handleTouchStartDollyRotate( event );
    						state = STATE.TOUCH_DOLLY_ROTATE;
    						break;
    					default:
    						state = STATE.NONE;
    				}
    				break;
    			default:
    				state = STATE.NONE;
    		}
    		if ( state !== STATE.NONE ) {
    			scope.dispatchEvent( startEvent );
    		}
    	}
    	function onTouchMove( event ) {
    		if ( scope.enabled === false ) return;
    		event.preventDefault();
    		event.stopPropagation();
    		switch ( state ) {
    			case STATE.TOUCH_ROTATE:
    				if ( scope.enableRotate === false ) return;
    				handleTouchMoveRotate( event );
    				scope.update();
    				break;
    			case STATE.TOUCH_PAN:
    				if ( scope.enablePan === false ) return;
    				handleTouchMovePan( event );
    				scope.update();
    				break;
    			case STATE.TOUCH_DOLLY_PAN:
    				if ( scope.enableZoom === false && scope.enablePan === false ) return;
    				handleTouchMoveDollyPan( event );
    				scope.update();
    				break;
    			case STATE.TOUCH_DOLLY_ROTATE:
    				if ( scope.enableZoom === false && scope.enableRotate === false ) return;
    				handleTouchMoveDollyRotate( event );
    				scope.update();
    				break;
    			default:
    				state = STATE.NONE;
    		}
    	}
    	function onTouchEnd( event ) {
    		if ( scope.enabled === false ) return;
    		scope.dispatchEvent( endEvent );
    		state = STATE.NONE;
    	}
    	function onContextMenu( event ) {
    		if ( scope.enabled === false ) return;
    		event.preventDefault();
    	}
    	scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );
    	scope.domElement.addEventListener( 'pointerdown', onPointerDown, false );
    	scope.domElement.addEventListener( 'wheel', onMouseWheel, false );
    	scope.domElement.addEventListener( 'touchstart', onTouchStart, false );
    	scope.domElement.addEventListener( 'touchend', onTouchEnd, false );
    	scope.domElement.addEventListener( 'touchmove', onTouchMove, false );
    	scope.domElement.addEventListener( 'keydown', onKeyDown, false );
    	if ( scope.domElement.tabIndex === - 1 ) {
    		scope.domElement.tabIndex = 0;
    	}
    	this.update();
    };
    OrbitControls.prototype = Object.create( EventDispatcher.prototype );
    OrbitControls.prototype.constructor = OrbitControls;
    var MapControls = function ( object, domElement ) {
    	OrbitControls.call( this, object, domElement );
    	this.screenSpacePanning = false;
    	this.mouseButtons.LEFT = MOUSE.PAN;
    	this.mouseButtons.RIGHT = MOUSE.ROTATE;
    	this.touches.ONE = TOUCH.PAN;
    	this.touches.TWO = TOUCH.DOLLY_ROTATE;
    };
    MapControls.prototype = Object.create( EventDispatcher.prototype );
    MapControls.prototype.constructor = MapControls;

    function createQuad(r, z = 0) {
        const vertices = [-r, -r, z, r, -r, z, r, r, z, -r, r, z];
        const indices = [0, 1, 2, 0, 2, 3];
        return { vertices, indices }
    }
    const unitQuad = createQuad(0.5, 0);
    function meshColor(color, mesh) {
        return color[mesh.options.colorType] || color
    }
    function disposeMesh(mesh) {
        mesh.parent.remove(mesh);
        mesh.geometry.dispose();
        mesh.material.dispose();
        if (mesh.material.map) mesh.material.map.dispose();
        forLoop(mesh.userData, (val, key) => delete mesh.userData[key]);
    }
    const zMultiplier = 0.25;
    const PI = Math.PI;
    class BaseMesh {
        constructor(view, options = {}) {
            options = Object.assign(this.constructor.options(view), options);
            const { scene, world } = view;
            Object.assign(this, { scene, world, view, options });
            this.mesh = null;
            this.name = this.constructor.name;
        }
        centerMesh() {
            let { centerX, centerY, width, height } = this.world;
            if (this.canvas) [centerX, centerY] = [0, 0];
            const z =
                this.view.meshes.patches === this &&
                this.view.options.turtles.meshClass === 'Obj3DMesh'
                    ? this.world.minZ
                    : this.options.z * zMultiplier;
            this.mesh.position.set(-centerX, -centerY, z);
        }
        init() {
            throw Error('init is abstract, must be overriden')
        }
        update() {
            throw Error('update is abstract, must be overriden')
        }
        get spriteSheetTexture() {
            if (this.view.spriteSheet.texture == null) {
                const texture = new three_module.CanvasTexture(
                    this.view.spriteSheet.ctx.canvas
                );
                this.view.spriteSheet.texture = texture;
            }
            return this.view.spriteSheet.texture
        }
    }
    class NullMesh {
        constructor() {
            this.options = {};
        }
        init() {}
        update() {}
    }
    class CanvasMesh extends BaseMesh {
        static options(view) {
            return {
                textureOptions: {
                    minFilter: three_module.LinearFilter,
                    magFilter: three_module.LinearFilter,
                },
                z: 0.0,
                useSegments: false,
                canvas: view.patchesCanvas(),
            }
        }
        init() {
            if (this.mesh) disposeMesh(this.mesh);
            const { canvas, textureOptions, useSegments, z } = this.options;
            Object.assign(this, { canvas, z, textureOptions });
            const { width, height, centerX, centerY } = this.world;
            const texture = new three_module.CanvasTexture(canvas);
            Object.assign(texture, textureOptions);
            const geometry = new three_module.PlaneBufferGeometry(
                width,
                height,
                useSegments ? width : 1,
                useSegments ? height : 1
            );
            const material = new three_module.MeshBasicMaterial({
                map: texture,
                side: three_module.DoubleSide,
                transparent: true,
            });
            this.mesh = new three_module.Mesh(geometry, material);
            this.mesh.position.z = z;
            this.scene.add(this.mesh);
        }
        update() {
            this.mesh.material.map.needsUpdate = true;
        }
    }
    class PatchesMesh extends CanvasMesh {
        static options(view) {
            return {
                textureOptions: {
                    minFilter: three_module.NearestFilter,
                    magFilter: three_module.NearestFilter,
                },
                z: 0.0,
                useSegments: false,
                colorType: 'pixel',
                canvas: view.patchesCanvas(),
            }
        }
        init() {
            super.init();
            this.centerMesh();
        }
        update(data, viewFcn = d => d) {
            if (data) this.view.patchesView.setPixels(data, viewFcn);
            this.view.patchesView.updateCanvas();
            super.update();
        }
    }
    class QuadSpritesMesh extends BaseMesh {
        static options() {
            return {
                z: 2.0,
                colorType: 'css',
            }
        }
        init() {
            if (this.mesh) disposeMesh(this.mesh);
            const texture = this.spriteSheetTexture;
            const geometry = new three_module.BufferGeometry();
            geometry.setAttribute(
                'position',
                new three_module.Float32BufferAttribute([], 3)
            );
            geometry.setAttribute('uv', new three_module.Float32BufferAttribute([], 2));
            geometry.setIndex(new three_module.Uint32BufferAttribute([], 1));
            const material = new three_module.MeshBasicMaterial({
                map: texture,
                alphaTest: 0.5,
                side: three_module.DoubleSide,
            });
            this.mesh = new three_module.Mesh(geometry, material);
            this.centerMesh();
            this.scene.add(this.mesh);
        }
        update(turtles, viewFcn) {
            const { vertices, indices } = unitQuad;
            const positions = new Float32Array(vertices.length * turtles.length);
            const uvs = [];
            const indexes = [];
            forLoop(turtles, (turtle, i) => {
                if (turtle.hidden) return
                let { x, y, z, theta } = turtle;
                const viewData = viewFcn(turtle, i);
                let { size, sprite } = viewData;
                if (!sprite)
                    sprite = this.view.getSprite(
                        viewData.shape,
                        meshColor(viewData.color, this)
                    );
                const cos = Math.cos(theta);
                const sin = Math.sin(theta);
                const offset = i * vertices.length;
                for (let j = 0; j < vertices.length; j = j + 3) {
                    const x0 = vertices[j];
                    const y0 = vertices[j + 1];
                    positions[j + offset] = size * (x0 * cos - y0 * sin) + x;
                    positions[j + offset + 1] = size * (x0 * sin + y0 * cos) + y;
                    positions[j + offset + 2] = z;
                }
                indexes.push(...indices.map(ix => ix + i * 4));
                uvs.push(...sprite.uvs);
            });
            this.mesh.geometry.setAttribute(
                'position',
                new three_module.BufferAttribute(positions, 3)
            );
            this.mesh.geometry.setAttribute(
                'uv',
                new three_module.Float32BufferAttribute(uvs, 2)
            );
            this.mesh.geometry.setIndex(new three_module.Uint32BufferAttribute(indexes, 1));
        }
    }
    class PointsMesh extends BaseMesh {
        static options() {
            return {
                size: 1,
                color: null,
                z: 2.5,
                colorType: 'webgl',
            }
        }
        init() {
            if (this.mesh) disposeMesh(this.mesh);
            const size = this.options.size;
            this.fixedColor = this.options.color
                ? new three_module.Color(...meshColor(this.options.color, this))
                : null;
            const geometry = new three_module.BufferGeometry();
            geometry.setAttribute(
                'position',
                new three_module.Float32BufferAttribute([], 3)
            );
            if (!this.fixedColor) {
                geometry.setAttribute(
                    'color',
                    new three_module.Float32BufferAttribute([], 3)
                );
            }
            const material = this.fixedColor
                ? new three_module.PointsMaterial({
                      size: size,
                      color: this.fixedColor,
                  })
                : new three_module.PointsMaterial({
                      size: size,
                      vertexColors: true,
                  });
            this.mesh = new three_module.Points(geometry, material);
            this.centerMesh();
            this.scene.add(this.mesh);
        }
        update(agents, viewFcn) {
            const vertices = [];
            const colors = this.fixedColor ? null : [];
            forLoop(agents, (agent, i) => {
                if (agent.hidden) return
                let { x, y, z } = agent;
                vertices.push(x, y, z);
                if (colors) colors.push(...meshColor(viewFcn(agent, i).color, this));
            });
            this.mesh.geometry.setAttribute(
                'position',
                new three_module.Float32BufferAttribute(vertices, 3)
            );
            if (colors) {
                this.mesh.geometry.setAttribute(
                    'color',
                    new three_module.Float32BufferAttribute(colors, 3)
                );
            }
        }
    }
    class LinksMesh extends BaseMesh {
        static options() {
            return {
                color: null,
                z: 1,
                colorType: 'webgl',
            }
        }
        init() {
            if (this.mesh) disposeMesh(this.mesh);
            this.fixedColor = this.options.color
                ? new three_module.Color(...meshColor(this.options.color, this))
                : null;
            const geometry = new three_module.BufferGeometry();
            geometry.setAttribute(
                'position',
                new three_module.Float32BufferAttribute([], 3)
            );
            if (!this.fixedColor) {
                geometry.setAttribute(
                    'color',
                    new three_module.Float32BufferAttribute([], 3)
                );
            }
            const material = this.fixedColor
                ? new three_module.LineBasicMaterial({ color: this.fixedColor })
                : new three_module.LineBasicMaterial({ vertexColors: true });
            this.mesh = new three_module.LineSegments(geometry, material);
            this.centerMesh();
            this.scene.add(this.mesh);
        }
        update(links, viewFcn) {
            const vertices = [];
            const colors = this.fixedColor ? null : [];
            forLoop(links, (link, i) => {
                let { x0, y0, z0, x1, y1, z1 } = link;
                if (!z0) z0 = 0;
                if (!z1) z1 = 0;
                vertices.push(x0, y0, z0, x1, y1, z1);
                if (colors) {
                    const color = meshColor(viewFcn(link, i).color, this);
                    colors.push(...color, ...color);
                }
            });
            this.mesh.geometry.setAttribute(
                'position',
                new three_module.Float32BufferAttribute(vertices, 3)
            );
            if (colors) {
                this.mesh.geometry.setAttribute(
                    'color',
                    new three_module.Float32BufferAttribute(colors, 3)
                );
            }
        }
    }
    const geometries = {
        Dart: () => turtleGeometry(),
        Cone0: () => new three_module.ConeBufferGeometry(0.5).rotateX(PI / 2),
        Cone: () => new three_module.ConeBufferGeometry(0.5).rotateZ(-PI / 2),
        Cube: () => new three_module.BoxBufferGeometry(),
        Cylinder0: () =>
            new three_module.CylinderBufferGeometry(0.5, 0.5, 1).rotateX(PI / 2),
        Cylinder: () =>
            new three_module.CylinderBufferGeometry(0.5, 0.5, 1).rotateZ(-PI / 2),
        Sphere: () => new three_module.SphereBufferGeometry(0.5),
    };
    const Obj3DShapes = AgentArray.fromArray(Object.keys(geometries));
    function getGeometry(shape) {
        let geometry = geometries[shape];
        if (!geometry) {
            console.log('Geometry not found: ', shape, '..using Default');
            shape = 'Dart';
            geometry = geometries[shape];
        }
        return [geometry(), shape]
    }
    class Obj3DMesh extends BaseMesh {
        static options() {
            return {
                z: 2.0,
                colorType: 'webgl',
                useAxes: false,
            }
        }
        init() {
            if (this.meshes) this.meshes.forEach(mesh => disposeMesh(mesh));
            this.meshes = new Map();
            this.lastAgentsLength = null;
            this.lastAgentsMaxID = null;
        }
        newMesh(shape = 'Dart', color = 'red', size = 1) {
            var [geometry, shape] = getGeometry(shape);
            if (size !== 1) geometry.scale(size, size, size);
            const view = { shape, color, size };
            color = new three_module.Color(...meshColor(color, this));
            const material = this.view.options.useLights
                ? new three_module.MeshPhongMaterial({ color })
                : new three_module.MeshBasicMaterial({ color });
            const mesh = new three_module.Mesh(geometry, material);
            mesh.rotation.order = 'ZYX';
            if (this.options.useAxes) mesh.add(new three_module.AxesHelper(size));
            mesh.userData.view = view;
            this.scene.add(mesh);
            return mesh
        }
        checkDeadAgents(agents) {
            const lastLen = this.lastAgentsLength;
            const lastID = this.lastAgentsMaxID;
            if (lastLen === 0) return
            if (
                lastLen != null &&
                (lastLen > agents.length || agents.last().id !== lastID)
            ) {
                console.log('look for dead agents');
                this.meshes.forEach((mesh, agent) => {
                    if (mesh.userData.agent.id === -1) {
                        console.log('found one:', mesh.userData.agent);
                        disposeMesh(mesh);
                        this.meshes.delete(agent);
                    }
                });
            }
            this.lastAgentsLength = agents.length;
            this.lastAgentsMaxID = agents.length === 0 ? null : agents.last().id;
        }
        update(agents, viewFcn) {
            this.checkDeadAgents(agents);
            if (agents.hidden) return
            forLoop(agents, agent => {
                if (agent.hidden) return
                const view = viewFcn(agent);
                let mesh = this.meshes.get(agent);
                if (mesh) {
                    var { shape, color, size } = mesh.userData.view;
                    if (color !== view.color) {
                        color = mesh.userData.view.color = view.color;
                        color = new three_module.Color(...meshColor(color, this));
                        mesh.material.color = color;
                    }
                    if (shape !== view.shape) {
                        var [geometry, shape] = getGeometry(view.shape);
                        mesh.geometry.dispose();
                        mesh.geometry = geometry;
                        mesh.geometry.scale(size, size, size);
                        mesh.userData.view.shape = shape;
                    }
                    if (size !== view.size) {
                        size = view.size / size;
                        mesh.geometry.scale(size, size, size);
                        mesh.userData.view.size = view.size;
                    }
                }
                if (!mesh) {
                    mesh = this.newMesh(view.shape, view.color, view.size);
                    this.meshes.set(agent, mesh);
                    mesh.userData.agent = agent;
                }
                const obj3d = agent.obj3d;
                if (obj3d) {
                    const pos = obj3d.position;
                    mesh.position.set(pos.x, pos.y, pos.z);
                    const rot = obj3d.rotation;
                    mesh.rotation.set(rot.x, rot.y, rot.z);
                } else {
                    mesh.position.set(agent.x, agent.y, agent.z);
                    mesh.rotation.set(0, 0, 0);
                }
            });
        }
    }
    function turtleGeometry() {
        const ax = 0.5;
        const bx = -0.5;
        const by = -0.5;
        const cx = -0.3;
        const top = 0.35;
        const bot = 0;
        const geometry = new three_module.Geometry();
        geometry.vertices.push(
            new three_module.Vector3(ax, 0, bot),
            new three_module.Vector3(bx, by, bot),
            new three_module.Vector3(cx, 0, top),
            new three_module.Vector3(bx, -by, bot),
            new three_module.Vector3(cx, 0, bot)
        );
        const [A, B, C, D, E] = [0, 1, 2, 3, 4];
        geometry.faces.push(
            new three_module.Face3(A, D, C),
            new three_module.Face3(A, C, B),
            new three_module.Face3(A, B, E),
            new three_module.Face3(A, E, D),
            new three_module.Face3(C, D, E),
            new three_module.Face3(C, E, B)
        );
        geometry.computeFaceNormals();
        return geometry
    }
    var ThreeMeshes = {
        BaseMesh,
        NullMesh,
        CanvasMesh,
        PatchesMesh,
        QuadSpritesMesh,
        PointsMesh,
        LinksMesh,
        Obj3DMesh,
        Obj3DShapes,
    };

    class ThreeView {
        static shapeNames() {
            return ThreeMeshes.Obj3DShapes
        }
        static defaultOptions(useThreeHelpers = true) {
            const options = {
                div: document.body,
                orthoView: false,
                clearColor: 0x000000,
                useAxes: useThreeHelpers,
                useGrid: useThreeHelpers,
                useWorldOutline: useThreeHelpers,
                useLights: true,
                spriteSize: 64,
                patches: {
                    meshClass: 'PatchesMesh',
                },
                turtles: {
                    meshClass: 'QuadSpritesMesh',
                },
                links: {
                    meshClass: 'LinksMesh',
                },
            };
            return options
        }
        constructor(
            world = World.defaultOptions(),
            options = {}
        ) {
            options = Object.assign(ThreeView.defaultOptions(), options);
            options.useLights =
                options.useLights || options.turtles.meshClass === 'Obj3DMesh';
            this.div = isString(options.div)
                ? document.getElementById(options.div)
                : options.div;
            if (!this.div.height) this.div.style.height = '600px';
            this.world = new World(world.world || world);
            this.options = options;
            this.ticks = 0;
            if (this.options.spriteSize !== 0) {
                const isPOT = isPowerOf2(this.options.spriteSize);
                this.spriteSheet = new SpriteSheet(
                    this.options.spriteSize,
                    16,
                    isPOT
                );
            }
            if (options.patches && options.patches.meshClass === 'PatchesMesh') {
                this.patchesView = new PatchesView(
                    this.world.width,
                    this.world.height
                );
            }
            this.initThree();
            this.initThreeHelpers();
            this.initMeshes();
        }
        initThree() {
            const { clientWidth, clientHeight } = this.div;
            const { orthoView, clearColor } = this.options;
            const [width, height] = this.world.getWorldSize();
            const [halfW, halfH] = [width / 2, height / 2];
            const orthographicCam = new three_module.OrthographicCamera(
                -halfW,
                halfW,
                halfH,
                -halfH,
                1,
                20 * width
            );
            orthographicCam.position.set(0, 0, 10 * width);
            orthographicCam.up.set(0, 0, 1);
            const perspectiveCam = new three_module.PerspectiveCamera(
                45,
                clientWidth / clientHeight,
                0.1,
                10000
            );
            perspectiveCam.position.set(width, width, width);
            perspectiveCam.up.set(0, 0, 1);
            const scene = new three_module.Scene();
            const camera = orthoView ? orthographicCam : perspectiveCam;
            const renderer = new three_module.WebGLRenderer();
            renderer.setPixelRatio(window.devicePixelRatio);
            renderer.setSize(clientWidth, clientHeight);
            renderer.setClearColor(clearColor);
            this.div.appendChild(renderer.domElement);
            this.orbitControls = new OrbitControls(camera, renderer.domElement);
            window.addEventListener('resize', () => {
                this.resize();
            });
            Object.assign(this, {
                scene,
                camera,
                renderer,
                orthographicCam,
                perspectiveCam,
            });
        }
        resize() {
            const { clientWidth, clientHeight } = this.div;
            const [width, height] = this.world.getWorldSize();
            if (this.options.orthoView) {
                const zoom = Math.min(clientWidth / width, clientHeight / height);
                this.renderer.setSize(zoom * width, zoom * height);
            } else {
                this.camera.aspect = clientWidth / clientHeight;
                this.camera.updateProjectionMatrix();
                this.renderer.setSize(clientWidth, clientHeight);
            }
        }
        toggleCamera() {
            this.options.orthoView = !this.options.orthoView;
            if (this.options.orthoView) {
                this.camera = this.orthographicCam;
            } else {
                this.camera = this.perspectiveCam;
            }
            this.resize();
            this.renderer.render(this.scene, this.camera);
        }
        snapshot(useOrtho = true) {
            const { scene, renderer, model } = this;
            const toggle = useOrtho && this.camera === this.perspectiveCam;
            if (toggle) {
                this.toggleCamera();
            }
            renderer.render(scene, this.camera);
            const durl = renderer.domElement.toDataURL();
            if (toggle) this.toggleCamera();
            return durl
        }
        initThreeHelpers() {
            const { scene, renderer, camera, world } = this;
            const {
                useAxes,
                useGrid,
                useLights,
                useWorldOutline,
            } = this.options;
            const { width, height, depth, minZ } = this.world;
            const helpers = {};
            if (useAxes) {
                helpers.axes = new three_module.AxesHelper((1.5 * width) / 2);
                scene.add(helpers.axes);
            }
            if (useGrid) {
                helpers.grid = new three_module.GridHelper(1.25 * width, 10);
                helpers.grid.rotation.x = three_module.Math.degToRad(90);
                helpers.grid.position.z = minZ;
                scene.add(helpers.grid);
            }
            if (useLights) {
                const width = world.width;
                helpers.directionalLight = new three_module.DirectionalLight(0xffffff, 1);
                helpers.directionalLight.position.set(width, width, width);
                scene.add(helpers.directionalLight);
                helpers.diffuseLight = new three_module.AmbientLight(0x404040);
                scene.add(helpers.diffuseLight);
            }
            if (useWorldOutline) {
                const geometry = new three_module.BoxBufferGeometry(width, height, depth);
                const edges = new three_module.EdgesGeometry(geometry);
                helpers.outline = new three_module.LineSegments(
                    edges,
                    new three_module.LineBasicMaterial({ color: 0x80808080 })
                );
                scene.add(helpers.outline);
            }
            this.helpers = helpers;
        }
        initMeshes() {
            this.meshes = {};
            forLoop(this.options, (val, key) => {
                if (val.meshClass && val.meshClass !== 'NullMesh') {
                    const Mesh = ThreeMeshes[val.meshClass];
                    const options = val;
                    const mesh = new Mesh(this, options);
                    this.meshes[key] = mesh;
                    mesh.init();
                }
            });
        }
        setPatchesSmoothing(smooth = false) {
            const filter = smooth ? three_module.LinearFilter : three_module.NearestFilter;
            this.meshes.patches.mesh.material.map.magFilter = filter;
        }
        idle(ms = 32) {
            timeoutLoop(() => this.render(), -1, ms);
        }
        render() {
            this.renderer.render(this.scene, this.camera);
            this.ticks++;
        }
        getSprite(shape, fillColor, strokeColor = null) {
            return this.spriteSheet.getSprite(shape, fillColor, strokeColor)
        }
        checkViewFcn(viewFcn) {
            return isObject$1(viewFcn) ? () => viewFcn : viewFcn
        }
        patchesCanvas() {
            return this.patchesView.ctx.canvas
        }
        clearPatches(color) {
            this.patchesView.clear(color);
            this.meshes.patches.update();
        }
        drawPatchesImage(img) {
            const options = this.meshes.patches.options;
            options.textureOptions = {
                minFilter: three_module.NearestFilter,
                magFilter: three_module.LinearFilter,
            };
            options.canvas = img;
            this.meshes.patches.init();
        }
        createPatchPixels(pixelFcn) {
            this.patchesView.createPixels(pixelFcn);
            const data = this.patchesView.pixels;
            this.meshes.patches.update(data, d => d);
        }
        drawPatches(data, viewFcn) {
            if (isOofA(data)) data = toAofO(data);
            this.meshes.patches.update(data, viewFcn);
        }
        drawTurtles(data, viewFcn) {
            if (isOofA(data)) data = toAofO(data);
            viewFcn = this.checkViewFcn(viewFcn);
            this.meshes.turtles.update(data, viewFcn);
        }
        drawLinks(data, viewFcn) {
            if (isOofA(data)) data = toAofO(data);
            viewFcn = this.checkViewFcn(viewFcn);
            this.meshes.links.update(data, viewFcn);
        }
    }

    function isStaticColor(color) {
        return !isDynamicColor(color)
    }
    function isDynamicColor(color) {
        return (
            color === 'random' || isImageable(color) || isFunction(color)
        )
    }
    class ThreeDraw extends ThreeView {
        static defaultOptions() {
            return {
                patchesMesh: null,
                turtlesMesh: null,
                linksMesh: null,
                patchesColor: 'random',
                patchesSize: 1,
                initPatches: null,
                turtlesColor: 'random',
                turtlesShape: 'dart',
                turtlesSize: 1,
                linksColor: 'random',
                linksWidth: 1,
                patchesMap: 'DarkGray',
                turtlesMap: 'Basic16',
            }
        }
        constructor(model, viewOptions = {}, drawOptions = {}) {
            if (viewOptions.drawOptions) {
                drawOptions = viewOptions.drawOptions;
                delete viewOptions.drawOptions;
            }
            drawOptions = Object.assign(ThreeDraw.defaultOptions(), drawOptions);
            if (typeof drawOptions.turtlesMap === 'string')
                drawOptions.turtlesMap = ColorMap[drawOptions.turtlesMap];
            if (typeof drawOptions.patchesMap === 'string')
                drawOptions.patchesMap = ColorMap[drawOptions.patchesMap];
            const { patches, turtles, links } = Object.assign(
                ThreeView.defaultOptions(),
                viewOptions
            );
            const meshes = { patches, turtles, links };
            for (const mesh of ['patches', 'turtles', 'links']) {
                const meshName = mesh + 'Mesh';
                if (drawOptions[meshName]) {
                    const option = drawOptions[meshName];
                    meshes[mesh] =
                        typeof option === 'string' ? { meshClass: option } : option;
                }
                const color = mesh + 'Color';
                if (isStaticColor(drawOptions[color])) {
                    drawOptions[color] = Color$1.toTypedColor(drawOptions[color]);
                    meshes[mesh].color = drawOptions[color];
                }
                const size = mesh + 'Size';
                if (typeof drawOptions[size] === 'number') {
                    meshes[mesh].size = drawOptions[size];
                }
            }
            Object.assign(viewOptions, meshes);
            super(model.world, viewOptions);
            console.log('viewOptions', viewOptions);
            console.log('drawOptions', drawOptions);
            console.log('meshes', meshes);
            if (this.meshName('patches') === 'PatchesMesh') {
                if (drawOptions.initPatches) {
                    const colors = drawOptions.initPatches(model, this);
                    this.createPatchPixels(i => colors[i]);
                } else if (drawOptions.patchesColor === 'random') {
                    this.createPatchPixels(i =>
                        drawOptions.patchesMap.randomColor()
                    );
                }
            }
            this.checkParams(drawOptions);
            Object.assign(this, { model, view: this, drawOptions });
        }
        checkParams(params) {
            const keys = Object.keys(params);
            const defaults = ThreeDraw.defaultOptions();
            keys.forEach(k => {
                if (defaults[k] === undefined) {
                    console.log(
                        'Legal ThreeDraw parameters',
                        Object.keys(ThreeDraw.defaultOptions())
                    );
                    throw Error('Unknown ThreeDraw parameter: ' + k)
                }
            });
        }
        getMesh(agentSet) {
            return this.meshes[agentSet]
        }
        meshName(agentSet) {
            return this.meshes[agentSet].name
        }
        draw() {
            let {
                patchesColor,
                patchesShape,
                patchesSize,
                initPatches,
                turtlesColor,
                turtlesShape,
                turtlesSize,
                linksColor,
                linksWidth,
                patchesMap,
                turtlesMap,
            } = this.drawOptions;
            const { model, view } = this;
            const getColor = (agent, color, map) =>
                color === 'random'
                    ? map.atIndex(agent.id)
                    : typeof color === 'function'
                    ? checkColor(agent, color(agent))
                    : color;
            const getShape = (agent, shape) =>
                typeof shape === 'function' ? shape(agent) : shape;
            const getSize = (agent, size) =>
                typeof size === 'function' ? size(agent) : size;
            const checkColor = (agent, color, map = turtlesMap) =>
                color === 'random'
                    ? map.atIndex(agent.id)
                    : Color$1.toTypedColor(color);
            let lastImage, lastClearColor;
            if (this.meshName('patches') === 'PatchesMesh') {
                if (patchesColor === 'random' || initPatches) ; else if (typeof patchesColor === 'function') {
                    view.drawPatches(model.patches, p => patchesColor(p));
                } else if (isImageable(patchesColor)) {
                    if (patchesColor !== lastImage) {
                        view.drawPatchesImage(patchesColor);
                        lastImage = patchesColor;
                    }
                } else {
                    if (patchesColor !== lastClearColor) {
                        view.clearPatches(patchesColor);
                        lastClearColor = patchesColor;
                    }
                }
            } else {
                view.drawPatches(model.patches, p => ({
                    shape: getShape(p, patchesShape),
                    color: getColor(p, patchesColor, patchesMap),
                    size: getSize(p, patchesSize),
                }));
            }
            view.drawLinks(model.links, l => ({
                color: getColor(l, linksColor, turtlesMap),
                width: linksWidth,
            }));
            view.drawTurtles(model.turtles, t => ({
                shape: getShape(t, turtlesShape),
                color: getColor(t, turtlesColor, turtlesMap),
                size: getSize(t, turtlesSize),
            }));
            view.render();
        }
    }

    var Stats = function () {
    	var mode = 0;
    	var container = document.createElement( 'div' );
    	container.style.cssText = 'position:fixed;top:0;left:0;cursor:pointer;opacity:0.9;z-index:10000';
    	container.addEventListener( 'click', function ( event ) {
    		event.preventDefault();
    		showPanel( ++ mode % container.children.length );
    	}, false );
    	function addPanel( panel ) {
    		container.appendChild( panel.dom );
    		return panel;
    	}
    	function showPanel( id ) {
    		for ( var i = 0; i < container.children.length; i ++ ) {
    			container.children[ i ].style.display = i === id ? 'block' : 'none';
    		}
    		mode = id;
    	}
    	var beginTime = ( performance || Date ).now(), prevTime = beginTime, frames = 0;
    	var fpsPanel = addPanel( new Stats.Panel( 'FPS', '#0ff', '#002' ) );
    	var msPanel = addPanel( new Stats.Panel( 'MS', '#0f0', '#020' ) );
    	if ( self.performance && self.performance.memory ) {
    		var memPanel = addPanel( new Stats.Panel( 'MB', '#f08', '#201' ) );
    	}
    	showPanel( 0 );
    	return {
    		REVISION: 16,
    		dom: container,
    		addPanel: addPanel,
    		showPanel: showPanel,
    		begin: function () {
    			beginTime = ( performance || Date ).now();
    		},
    		end: function () {
    			frames ++;
    			var time = ( performance || Date ).now();
    			msPanel.update( time - beginTime, 200 );
    			if ( time >= prevTime + 1000 ) {
    				fpsPanel.update( ( frames * 1000 ) / ( time - prevTime ), 100 );
    				prevTime = time;
    				frames = 0;
    				if ( memPanel ) {
    					var memory = performance.memory;
    					memPanel.update( memory.usedJSHeapSize / 1048576, memory.jsHeapSizeLimit / 1048576 );
    				}
    			}
    			return time;
    		},
    		update: function () {
    			beginTime = this.end();
    		},
    		domElement: container,
    		setMode: showPanel
    	};
    };
    Stats.Panel = function ( name, fg, bg ) {
    	var min = Infinity, max = 0, round = Math.round;
    	var PR = round( window.devicePixelRatio || 1 );
    	var WIDTH = 80 * PR, HEIGHT = 48 * PR,
    		TEXT_X = 3 * PR, TEXT_Y = 2 * PR,
    		GRAPH_X = 3 * PR, GRAPH_Y = 15 * PR,
    		GRAPH_WIDTH = 74 * PR, GRAPH_HEIGHT = 30 * PR;
    	var canvas = document.createElement( 'canvas' );
    	canvas.width = WIDTH;
    	canvas.height = HEIGHT;
    	canvas.style.cssText = 'width:80px;height:48px';
    	var context = canvas.getContext( '2d' );
    	context.font = 'bold ' + ( 9 * PR ) + 'px Helvetica,Arial,sans-serif';
    	context.textBaseline = 'top';
    	context.fillStyle = bg;
    	context.fillRect( 0, 0, WIDTH, HEIGHT );
    	context.fillStyle = fg;
    	context.fillText( name, TEXT_X, TEXT_Y );
    	context.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );
    	context.fillStyle = bg;
    	context.globalAlpha = 0.9;
    	context.fillRect( GRAPH_X, GRAPH_Y, GRAPH_WIDTH, GRAPH_HEIGHT );
    	return {
    		dom: canvas,
    		update: function ( value, maxValue ) {
    			min = Math.min( min, value );
    			max = Math.max( max, value );
    			context.fillStyle = bg;
    			context.globalAlpha = 1;
    			context.fillRect( 0, 0, WIDTH, GRAPH_Y );
    			context.fillStyle = fg;
    			context.fillText( round( value ) + ' ' + name + ' (' + round( min ) + '-' + round( max ) + ')', TEXT_X, TEXT_Y );
    			context.drawImage( canvas, GRAPH_X + PR, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT, GRAPH_X, GRAPH_Y, GRAPH_WIDTH - PR, GRAPH_HEIGHT );
    			context.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, GRAPH_HEIGHT );
    			context.fillStyle = bg;
    			context.globalAlpha = 0.9;
    			context.fillRect( GRAPH_X + GRAPH_WIDTH - PR, GRAPH_Y, PR, round( ( 1 - ( value / maxValue ) ) * GRAPH_HEIGHT ) );
    		}
    	};
    };

    class Animator {
        constructor(fcn, steps = -1, fps = 30) {
            Object.assign(this, { fcn, steps, fps, timeoutID: null, ticks: 0 });
            this.start();
        }
        start() {
            if (this.timeoutID) return
            this.timeoutID = setInterval(() => this.step(), 1000 / this.fps);
            return this
        }
        stop() {
            if (this.timeoutID) clearInterval(this.timeoutID);
            this.timeoutID = null;
            return this
        }
        step() {
            if (this.ticks === this.steps) return this.stop()
            this.ticks++;
            this.fcn();
            if (this.stats) this.stats.update();
            return this
        }
        isRunning() {
            return this.timeoutID != null
        }
        startStats(left = '0px') {
            if (this.stats) return console.log('startStats: already running')
            this.stats = new Stats();
            document.body.appendChild(this.stats.dom);
            this.stats.dom.style.left = left;
            return this
        }
        setFps(fps) {
            this.reset(this.steps, fps);
        }
        setSteps(steps) {
            this.reset(steps, this.fps);
        }
        reset(steps = this.steps, fps = this.fps) {
            this.stop();
            this.steps = steps;
            this.ticks = 0;
            this.fps = fps;
            this.start();
        }
        toggle() {
            if (this.timeoutID) this.stop();
            else if (this.steps === 0) this.reset();
            else this.start();
        }
        once() {
            this.stop();
            this.step();
        }
    }

    class Evented {
        events = {}
        on(name, callback) {
            if (!this.events[name]) {
                this.events[name] = [];
            }
            this.events[name].push(callback);
            return callback
        }
        off(name, callback = null) {
            if (this.events[name]) {
                if (callback) {
                    this.events[name] = this.events[name].filter(
                        cb => cb !== callback
                    );
                }
                if (this.events[name].length === 0 || !callback) {
                    delete this.events[name];
                }
            }
        }
        emit(name, ...args) {
            if (this.events[name]) {
                this.events[name].forEach(callback => callback(...args));
            }
        }
    }

    class Mouse {
        constructor(canvas, world, callback = (evt, mouse) => {}) {
            if (typeof canvas === 'string') {
                canvas = document.getElementById(canvas);
            }
            Object.assign(this, { canvas, world, callback });
            this.mouseDown = e => this.handleMouseDown(e);
            this.mouseUp = e => this.handleMouseUp(e);
            this.mouseMove = e => this.handleMouseMove(e);
        }
        resetParams() {
            this.x = this.y = NaN;
            this.moved = this.down = false;
        }
        start() {
            this.canvas.addEventListener('mousedown', this.mouseDown);
            document.body.addEventListener('mouseup', this.mouseUp);
            this.canvas.addEventListener('mousemove', this.mouseMove);
            this.resetParams();
            return this
        }
        stop() {
            this.canvas.removeEventListener('mousedown', this.mouseDown);
            document.body.removeEventListener('mouseup', this.mouseUp);
            this.canvas.removeEventListener('mousemove', this.mouseMove);
            this.resetParams();
            return this
        }
        get running() {
            return !isNaN(this.x)
        }
        run(on = true) {
            if (on) this.start();
            else this.stop();
        }
        generalHandler(e, down, moved) {
            this.down = down;
            this.moved = moved;
            this.setXY(e);
            this.callback(this, e);
        }
        handleMouseDown(e) {
            this.action = 'down';
            this.generalHandler(e, true, false);
        }
        handleMouseUp(e) {
            this.action = 'up';
            this.generalHandler(e, false, false);
        }
        handleMouseMove(e) {
            this.action = this.down ? 'drag' : 'move';
            this.generalHandler(e, this.down, true);
        }
        setXY(e) {
            const { canvas, world } = this;
            const patchSize = world.patchSize(canvas);
            const rect = this.canvas.getBoundingClientRect();
            const pixX = e.clientX - rect.left;
            const pixY = e.clientY - rect.top
            ;[this.x, this.y] = world.pixelXYtoPatchXY(pixX, pixY, patchSize);
        }
    }

    function isGeojson(obj) {
        return typeof obj === 'object' && obj.type === 'FeatureCollection'
    }
    function clone(json) {
        return JSON.parse(JSON.stringify(json))
    }
    function minify(json) {
        if (typeof json === 'string') json = JSON.parse(json);
        const str = JSON.stringify(json);
        return str.replace(/},{/g, '},\n\n{')
    }
    function bboxFeature(bbox, properties = {}) {
        const coords = bboxCoords(bbox);
        coords.push(coords[0]);
        return {
            type: 'Feature',
            geometry: {
                cordinates: coords,
                type: 'Polygon',
            },
            properties,
        }
    }
    function flattenMultiLineStrings(geojson, cloneJson = true) {
        if (cloneJson) geojson = clone(geojson);
        const features = geojson.features || geojson;
        const lineStrings = features.reduce((acc, obj) => {
            const geom = obj.geometry;
            if (geom.type === 'LineString') {
                geom.coordinates.properties = obj.properties;
                acc.push(geom.coordinates);
            } else if (geom.type === 'MultiLineString') {
                geom.coordinates.forEach(a => {
                    a.properties = obj.properties;
                    acc.push(a);
                });
            }
            return acc
        }, []);
        return lineStrings
    }
    function lineStringsToLinks(model, bbox, lineStrings) {
        const xfm = model.world.xfm || model.world.bboxTransform(...bbox);
        lineStrings = flattenMultiLineStrings(lineStrings);
        const nodeCache = {};
        const newTurtles = [];
        const newLinks = [];
        function getNode(pt) {
            const key = pt.toString();
            let node = nodeCache[key];
            if (node) return node
            node = model.turtles.createOne(t => {
                t.setxy(...xfm.toWorld(pt));
                t.lon = pt[0];
                t.lat = pt[1];
            });
            nodeCache[key] = node;
            newTurtles.push(node);
            return node
        }
        function newLink(pt0, pt1) {
            const t0 = getNode(pt0);
            const t1 = getNode(pt1);
            const link = model.links.createOne(t0, t1);
            newLinks.push(link);
            return link
        }
        function lineStringToLinks(lineString) {
            lineString.reduce((acc, pt, i, a) => {
                const link = newLink(a[i - 1], pt);
                if (i === 1) {
                    acc = [link];
                    acc.properties = lineString.properties;
                } else {
                    acc.push(link);
                }
                link.lineString = acc;
                return acc
            });
        }
        lineStrings.forEach(lineString => lineStringToLinks(lineString));
        return [newTurtles, newLinks]
    }
    function flatten(gj, cloneJson = true) {
        if (cloneJson) gj = clone(gj);
        switch ((gj && gj.type) || null) {
            case 'FeatureCollection':
                gj.features = gj.features.reduce(function (mem, feature) {
                    return mem.concat(flatten(feature))
                }, []);
                return gj
            case 'Feature':
                if (!gj.geometry) return [gj]
                return flatten(gj.geometry).map(function (geom) {
                    var data = {
                        type: 'Feature',
                        properties: JSON.parse(JSON.stringify(gj.properties)),
                        geometry: geom,
                    };
                    if (gj.id !== undefined) {
                        data.id = gj.id;
                    }
                    return data
                })
            case 'MultiPoint':
                return gj.coordinates.map(function (_) {
                    return { type: 'Point', coordinates: _ }
                })
            case 'MultiPolygon':
                return gj.coordinates.map(function (_) {
                    return { type: 'Polygon', coordinates: _ }
                })
            case 'MultiLineString':
                return gj.coordinates.map(function (_) {
                    return { type: 'LineString', coordinates: _ }
                })
            case 'GeometryCollection':
                return gj.geometries.map(flatten).reduce(function (memo, geoms) {
                    return memo.concat(geoms)
                }, [])
            case 'Point':
            case 'Polygon':
            case 'LineString':
                return [gj]
        }
    }
    function geojsonBBox(gj) {
        var coords, bbox;
        if (!gj.hasOwnProperty('type')) return
        coords = getCoordinates(gj);
        bbox = [
            Number.POSITIVE_INFINITY,
            Number.POSITIVE_INFINITY,
            Number.NEGATIVE_INFINITY,
            Number.NEGATIVE_INFINITY,
        ];
        return coords.reduce(function (prev, coord) {
            return [
                Math.min(coord[0], prev[0]),
                Math.min(coord[1], prev[1]),
                Math.max(coord[0], prev[2]),
                Math.max(coord[1], prev[3]),
            ]
        }, bbox)
    }
    function getCoordinates(gj) {
        switch (gj.type) {
            case 'Point':
                return [gj.coordinates]
            case 'LineString':
            case 'MultiPoint':
                return gj.coordinates
            case 'Polygon':
            case 'MultiLineString':
                return gj.coordinates.reduce(function (dump, part) {
                    return dump.concat(part)
                }, [])
            case 'MultiPolygon':
                return gj.coordinates.reduce(function (dump, poly) {
                    return dump.concat(
                        poly.reduce(function (points, part) {
                            return points.concat(part)
                        }, [])
                    )
                }, [])
            case 'Feature':
                return getCoordinates(gj.geometry)
            case 'GeometryCollection':
                return gj.geometries.reduce(function (dump, g) {
                    return dump.concat(getCoordinates(g))
                }, [])
            case 'FeatureCollection':
                return gj.features.reduce(function (dump, f) {
                    return dump.concat(getCoordinates(f))
                }, [])
        }
    }

    var geojson = /*#__PURE__*/Object.freeze({
        __proto__: null,
        isGeojson: isGeojson,
        clone: clone,
        minify: minify,
        bboxFeature: bboxFeature,
        flattenMultiLineStrings: flattenMultiLineStrings,
        lineStringsToLinks: lineStringsToLinks,
        flatten: flatten,
        geojsonBBox: geojsonBBox,
        getCoordinates: getCoordinates
    });

    exports.AgentArray = AgentArray;
    exports.AgentList = AgentList;
    exports.AgentSet = AgentSet;
    exports.Animator = Animator;
    exports.Color = Color$1;
    exports.ColorMap = ColorMap;
    exports.DataSet = DataSet;
    exports.Evented = Evented;
    exports.GeoWorld = GeoWorld;
    exports.Link = Link;
    exports.Links = Links;
    exports.Model = Model;
    exports.Model3D = Model3D;
    exports.Mouse = Mouse;
    exports.Object3D = Object3D$1;
    exports.Patch = Patch;
    exports.Patches = Patches;
    exports.PatchesView = PatchesView;
    exports.RGBADataSet = RGBADataSet$1;
    exports.RGBDataSet = RGBDataSet;
    exports.Shapes = Shapes;
    exports.SpriteSheet = SpriteSheet;
    exports.ThreeDraw = ThreeDraw;
    exports.ThreeMeshes = ThreeMeshes;
    exports.ThreeView = ThreeView;
    exports.TileData = TileData;
    exports.Turtle = Turtle;
    exports.Turtle3D = Turtle3D;
    exports.Turtles = Turtles;
    exports.TurtlesView = TurtlesView;
    exports.TwoDraw = TwoDraw;
    exports.TwoView = TwoView;
    exports.World = World;
    exports.geojson = geojson;
    exports.gis = gis;
    exports.steg = steg;
    exports.turfImports = turfImports;
    exports.utils = util;

}));