{"version":3,"sources":["../../from-git/browser-geo-tz/node_modules/geobuf/encode.js","../../from-git/browser-geo-tz/node_modules/geobuf/decode.js","../../from-git/browser-geo-tz/node_modules/geobuf/index.js","../../from-git/browser-geo-tz/node_modules/ieee754/index.js","../../from-git/browser-geo-tz/node_modules/pbf/index.js","../../from-git/browser-geo-tz/src/find.ts","../../from-git/browser-geo-tz/src/oceanUtils.ts","../../from-git/browser-geo-tz/node_modules/robust-predicates/esm/util.js","../../from-git/browser-geo-tz/node_modules/robust-predicates/esm/orient2d.js","../../from-git/browser-geo-tz/node_modules/robust-predicates/esm/orient3d.js","../../from-git/browser-geo-tz/node_modules/robust-predicates/esm/incircle.js","../../from-git/browser-geo-tz/node_modules/robust-predicates/esm/insphere.js","../../from-git/browser-geo-tz/node_modules/point-in-polygon-hao/dist/esm/index.js","../../from-git/browser-geo-tz/node_modules/@turf/helpers/index.ts","../../from-git/browser-geo-tz/node_modules/@turf/invariant/index.ts","../../from-git/browser-geo-tz/node_modules/@turf/boolean-point-in-polygon/index.ts","../src/utils.ts","../src/sun-position.ts"],"sourcesContent":["'use strict';\n\nmodule.exports = encode;\n\nvar keys, keysNum, keysArr, dim, e,\n maxPrecision = 1e6;\n\nvar geometryTypes = {\n 'Point': 0,\n 'MultiPoint': 1,\n 'LineString': 2,\n 'MultiLineString': 3,\n 'Polygon': 4,\n 'MultiPolygon': 5,\n 'GeometryCollection': 6\n};\n\nfunction encode(obj, pbf) {\n keys = {};\n keysArr = [];\n keysNum = 0;\n dim = 0;\n e = 1;\n\n analyze(obj);\n\n e = Math.min(e, maxPrecision);\n var precision = Math.ceil(Math.log(e) / Math.LN10);\n\n for (var i = 0; i < keysArr.length; i++) pbf.writeStringField(1, keysArr[i]);\n if (dim !== 2) pbf.writeVarintField(2, dim);\n if (precision !== 6) pbf.writeVarintField(3, precision);\n\n if (obj.type === 'FeatureCollection') pbf.writeMessage(4, writeFeatureCollection, obj);\n else if (obj.type === 'Feature') pbf.writeMessage(5, writeFeature, obj);\n else pbf.writeMessage(6, writeGeometry, obj);\n\n keys = null;\n\n return pbf.finish();\n}\n\nfunction analyze(obj) {\n var i, key;\n\n if (obj.type === 'FeatureCollection') {\n for (i = 0; i < obj.features.length; i++) analyze(obj.features[i]);\n\n } else if (obj.type === 'Feature') {\n if (obj.geometry !== null) analyze(obj.geometry);\n for (key in obj.properties) saveKey(key);\n\n } else if (obj.type === 'Point') analyzePoint(obj.coordinates);\n else if (obj.type === 'MultiPoint') analyzePoints(obj.coordinates);\n else if (obj.type === 'GeometryCollection') {\n for (i = 0; i < obj.geometries.length; i++) analyze(obj.geometries[i]);\n }\n else if (obj.type === 'LineString') analyzePoints(obj.coordinates);\n else if (obj.type === 'Polygon' || obj.type === 'MultiLineString') analyzeMultiLine(obj.coordinates);\n else if (obj.type === 'MultiPolygon') {\n for (i = 0; i < obj.coordinates.length; i++) analyzeMultiLine(obj.coordinates[i]);\n }\n\n for (key in obj) {\n if (!isSpecialKey(key, obj.type)) saveKey(key);\n }\n}\n\nfunction analyzeMultiLine(coords) {\n for (var i = 0; i < coords.length; i++) analyzePoints(coords[i]);\n}\n\nfunction analyzePoints(coords) {\n for (var i = 0; i < coords.length; i++) analyzePoint(coords[i]);\n}\n\nfunction analyzePoint(point) {\n dim = Math.max(dim, point.length);\n\n // find max precision\n for (var i = 0; i < point.length; i++) {\n while (Math.round(point[i] * e) / e !== point[i] && e < maxPrecision) e *= 10;\n }\n}\n\nfunction saveKey(key) {\n if (keys[key] === undefined) {\n keysArr.push(key);\n keys[key] = keysNum++;\n }\n}\n\nfunction writeFeatureCollection(obj, pbf) {\n for (var i = 0; i < obj.features.length; i++) {\n pbf.writeMessage(1, writeFeature, obj.features[i]);\n }\n writeProps(obj, pbf, true);\n}\n\nfunction writeFeature(feature, pbf) {\n if (feature.geometry !== null) pbf.writeMessage(1, writeGeometry, feature.geometry);\n\n if (feature.id !== undefined) {\n if (typeof feature.id === 'number' && feature.id % 1 === 0) pbf.writeSVarintField(12, feature.id);\n else pbf.writeStringField(11, feature.id);\n }\n\n if (feature.properties) writeProps(feature.properties, pbf);\n writeProps(feature, pbf, true);\n}\n\nfunction writeGeometry(geom, pbf) {\n pbf.writeVarintField(1, geometryTypes[geom.type]);\n\n var coords = geom.coordinates;\n\n if (geom.type === 'Point') writePoint(coords, pbf);\n else if (geom.type === 'MultiPoint') writeLine(coords, pbf, true);\n else if (geom.type === 'LineString') writeLine(coords, pbf);\n else if (geom.type === 'MultiLineString') writeMultiLine(coords, pbf);\n else if (geom.type === 'Polygon') writeMultiLine(coords, pbf, true);\n else if (geom.type === 'MultiPolygon') writeMultiPolygon(coords, pbf);\n else if (geom.type === 'GeometryCollection') {\n for (var i = 0; i < geom.geometries.length; i++) pbf.writeMessage(4, writeGeometry, geom.geometries[i]);\n }\n\n writeProps(geom, pbf, true);\n}\n\nfunction writeProps(props, pbf, isCustom) {\n var indexes = [],\n valueIndex = 0;\n\n for (var key in props) {\n if (isCustom && isSpecialKey(key, props.type)) {\n continue;\n }\n pbf.writeMessage(13, writeValue, props[key]);\n indexes.push(keys[key]);\n indexes.push(valueIndex++);\n }\n pbf.writePackedVarint(isCustom ? 15 : 14, indexes);\n}\n\nfunction writeValue(value, pbf) {\n if (value === null) return;\n\n var type = typeof value;\n\n if (type === 'string') pbf.writeStringField(1, value);\n else if (type === 'boolean') pbf.writeBooleanField(5, value);\n else if (type === 'object') pbf.writeStringField(6, JSON.stringify(value));\n else if (type === 'number') {\n if (value % 1 !== 0) pbf.writeDoubleField(2, value);\n else if (value >= 0) pbf.writeVarintField(3, value);\n else pbf.writeVarintField(4, -value);\n }\n}\n\nfunction writePoint(point, pbf) {\n var coords = [];\n for (var i = 0; i < dim; i++) coords.push(Math.round(point[i] * e));\n pbf.writePackedSVarint(3, coords);\n}\n\nfunction writeLine(line, pbf) {\n var coords = [];\n populateLine(coords, line);\n pbf.writePackedSVarint(3, coords);\n}\n\nfunction writeMultiLine(lines, pbf, closed) {\n var len = lines.length,\n i;\n if (len !== 1) {\n var lengths = [];\n for (i = 0; i < len; i++) lengths.push(lines[i].length - (closed ? 1 : 0));\n pbf.writePackedVarint(2, lengths);\n // TODO faster with custom writeMessage?\n }\n var coords = [];\n for (i = 0; i < len; i++) populateLine(coords, lines[i], closed);\n pbf.writePackedSVarint(3, coords);\n}\n\nfunction writeMultiPolygon(polygons, pbf) {\n var len = polygons.length,\n i, j;\n if (len !== 1 || polygons[0].length !== 1) {\n var lengths = [len];\n for (i = 0; i < len; i++) {\n lengths.push(polygons[i].length);\n for (j = 0; j < polygons[i].length; j++) lengths.push(polygons[i][j].length - 1);\n }\n pbf.writePackedVarint(2, lengths);\n }\n\n var coords = [];\n for (i = 0; i < len; i++) {\n for (j = 0; j < polygons[i].length; j++) populateLine(coords, polygons[i][j], true);\n }\n pbf.writePackedSVarint(3, coords);\n}\n\nfunction populateLine(coords, line, closed) {\n var i, j,\n len = line.length - (closed ? 1 : 0),\n sum = new Array(dim);\n for (j = 0; j < dim; j++) sum[j] = 0;\n for (i = 0; i < len; i++) {\n for (j = 0; j < dim; j++) {\n var n = Math.round(line[i][j] * e) - sum[j];\n coords.push(n);\n sum[j] += n;\n }\n }\n}\n\nfunction isSpecialKey(key, type) {\n if (key === 'type') return true;\n else if (type === 'FeatureCollection') {\n if (key === 'features') return true;\n } else if (type === 'Feature') {\n if (key === 'id' || key === 'properties' || key === 'geometry') return true;\n } else if (type === 'GeometryCollection') {\n if (key === 'geometries') return true;\n } else if (key === 'coordinates') return true;\n return false;\n}\n","'use strict';\n\nmodule.exports = decode;\n\nvar keys, values, lengths, dim, e;\n\nvar geometryTypes = [\n 'Point', 'MultiPoint', 'LineString', 'MultiLineString',\n 'Polygon', 'MultiPolygon', 'GeometryCollection'];\n\nfunction decode(pbf) {\n dim = 2;\n e = Math.pow(10, 6);\n lengths = null;\n\n keys = [];\n values = [];\n var obj = pbf.readFields(readDataField, {});\n keys = null;\n\n return obj;\n}\n\nfunction readDataField(tag, obj, pbf) {\n if (tag === 1) keys.push(pbf.readString());\n else if (tag === 2) dim = pbf.readVarint();\n else if (tag === 3) e = Math.pow(10, pbf.readVarint());\n\n else if (tag === 4) readFeatureCollection(pbf, obj);\n else if (tag === 5) readFeature(pbf, obj);\n else if (tag === 6) readGeometry(pbf, obj);\n}\n\nfunction readFeatureCollection(pbf, obj) {\n obj.type = 'FeatureCollection';\n obj.features = [];\n return pbf.readMessage(readFeatureCollectionField, obj);\n}\n\nfunction readFeature(pbf, feature) {\n feature.type = 'Feature';\n var f = pbf.readMessage(readFeatureField, feature);\n if (!('geometry' in f)) f.geometry = null;\n return f;\n}\n\nfunction readGeometry(pbf, geom) {\n geom.type = 'Point';\n return pbf.readMessage(readGeometryField, geom);\n}\n\nfunction readFeatureCollectionField(tag, obj, pbf) {\n if (tag === 1) obj.features.push(readFeature(pbf, {}));\n\n else if (tag === 13) values.push(readValue(pbf));\n else if (tag === 15) readProps(pbf, obj);\n}\n\nfunction readFeatureField(tag, feature, pbf) {\n if (tag === 1) feature.geometry = readGeometry(pbf, {});\n\n else if (tag === 11) feature.id = pbf.readString();\n else if (tag === 12) feature.id = pbf.readSVarint();\n\n else if (tag === 13) values.push(readValue(pbf));\n else if (tag === 14) feature.properties = readProps(pbf, {});\n else if (tag === 15) readProps(pbf, feature);\n}\n\nfunction readGeometryField(tag, geom, pbf) {\n if (tag === 1) geom.type = geometryTypes[pbf.readVarint()];\n\n else if (tag === 2) lengths = pbf.readPackedVarint();\n else if (tag === 3) readCoords(geom, pbf, geom.type);\n else if (tag === 4) {\n geom.geometries = geom.geometries || [];\n geom.geometries.push(readGeometry(pbf, {}));\n }\n else if (tag === 13) values.push(readValue(pbf));\n else if (tag === 15) readProps(pbf, geom);\n}\n\nfunction readCoords(geom, pbf, type) {\n if (type === 'Point') geom.coordinates = readPoint(pbf);\n else if (type === 'MultiPoint') geom.coordinates = readLine(pbf, true);\n else if (type === 'LineString') geom.coordinates = readLine(pbf);\n else if (type === 'MultiLineString') geom.coordinates = readMultiLine(pbf);\n else if (type === 'Polygon') geom.coordinates = readMultiLine(pbf, true);\n else if (type === 'MultiPolygon') geom.coordinates = readMultiPolygon(pbf);\n}\n\nfunction readValue(pbf) {\n var end = pbf.readVarint() + pbf.pos,\n value = null;\n\n while (pbf.pos < end) {\n var val = pbf.readVarint(),\n tag = val >> 3;\n\n if (tag === 1) value = pbf.readString();\n else if (tag === 2) value = pbf.readDouble();\n else if (tag === 3) value = pbf.readVarint();\n else if (tag === 4) value = -pbf.readVarint();\n else if (tag === 5) value = pbf.readBoolean();\n else if (tag === 6) value = JSON.parse(pbf.readString());\n }\n return value;\n}\n\nfunction readProps(pbf, props) {\n var end = pbf.readVarint() + pbf.pos;\n while (pbf.pos < end) props[keys[pbf.readVarint()]] = values[pbf.readVarint()];\n values = [];\n return props;\n}\n\nfunction readPoint(pbf) {\n var end = pbf.readVarint() + pbf.pos,\n coords = [];\n while (pbf.pos < end) coords.push(pbf.readSVarint() / e);\n return coords;\n}\n\nfunction readLinePart(pbf, end, len, closed) {\n var i = 0,\n coords = [],\n p, d;\n\n var prevP = [];\n for (d = 0; d < dim; d++) prevP[d] = 0;\n\n while (len ? i < len : pbf.pos < end) {\n p = [];\n for (d = 0; d < dim; d++) {\n prevP[d] += pbf.readSVarint();\n p[d] = prevP[d] / e;\n }\n coords.push(p);\n i++;\n }\n if (closed) coords.push(coords[0]);\n\n return coords;\n}\n\nfunction readLine(pbf) {\n return readLinePart(pbf, pbf.readVarint() + pbf.pos);\n}\n\nfunction readMultiLine(pbf, closed) {\n var end = pbf.readVarint() + pbf.pos;\n if (!lengths) return [readLinePart(pbf, end, null, closed)];\n\n var coords = [];\n for (var i = 0; i < lengths.length; i++) coords.push(readLinePart(pbf, end, lengths[i], closed));\n lengths = null;\n return coords;\n}\n\nfunction readMultiPolygon(pbf) {\n var end = pbf.readVarint() + pbf.pos;\n if (!lengths) return [[readLinePart(pbf, end, null, true)]];\n\n var coords = [];\n var j = 1;\n for (var i = 0; i < lengths[0]; i++) {\n var rings = [];\n for (var k = 0; k < lengths[j]; k++) rings.push(readLinePart(pbf, end, lengths[j + 1 + k], true));\n j += lengths[j] + 1;\n coords.push(rings);\n }\n lengths = null;\n return coords;\n}\n","'use strict';\n\nexports.encode = require('./encode');\nexports.decode = require('./decode');\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n var e, m\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var nBits = -7\n var i = isLE ? (nBytes - 1) : 0\n var d = isLE ? -1 : 1\n var s = buffer[offset + i]\n\n i += d\n\n e = s & ((1 << (-nBits)) - 1)\n s >>= (-nBits)\n nBits += eLen\n for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n m = e & ((1 << (-nBits)) - 1)\n e >>= (-nBits)\n nBits += mLen\n for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n if (e === 0) {\n e = 1 - eBias\n } else if (e === eMax) {\n return m ? NaN : ((s ? -1 : 1) * Infinity)\n } else {\n m = m + Math.pow(2, mLen)\n e = e - eBias\n }\n return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n var e, m, c\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n var i = isLE ? 0 : (nBytes - 1)\n var d = isLE ? 1 : -1\n var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n value = Math.abs(value)\n\n if (isNaN(value) || value === Infinity) {\n m = isNaN(value) ? 1 : 0\n e = eMax\n } else {\n e = Math.floor(Math.log(value) / Math.LN2)\n if (value * (c = Math.pow(2, -e)) < 1) {\n e--\n c *= 2\n }\n if (e + eBias >= 1) {\n value += rt / c\n } else {\n value += rt * Math.pow(2, 1 - eBias)\n }\n if (value * c >= 2) {\n e++\n c /= 2\n }\n\n if (e + eBias >= eMax) {\n m = 0\n e = eMax\n } else if (e + eBias >= 1) {\n m = ((value * c) - 1) * Math.pow(2, mLen)\n e = e + eBias\n } else {\n m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n e = 0\n }\n }\n\n for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n e = (e << mLen) | m\n eLen += mLen\n for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n buffer[offset + i - d] |= s * 128\n}\n","'use strict';\n\nmodule.exports = Pbf;\n\nvar ieee754 = require('ieee754');\n\nfunction Pbf(buf) {\n this.buf = ArrayBuffer.isView && ArrayBuffer.isView(buf) ? buf : new Uint8Array(buf || 0);\n this.pos = 0;\n this.type = 0;\n this.length = this.buf.length;\n}\n\nPbf.Varint = 0; // varint: int32, int64, uint32, uint64, sint32, sint64, bool, enum\nPbf.Fixed64 = 1; // 64-bit: double, fixed64, sfixed64\nPbf.Bytes = 2; // length-delimited: string, bytes, embedded messages, packed repeated fields\nPbf.Fixed32 = 5; // 32-bit: float, fixed32, sfixed32\n\nvar SHIFT_LEFT_32 = (1 << 16) * (1 << 16),\n SHIFT_RIGHT_32 = 1 / SHIFT_LEFT_32;\n\n// Threshold chosen based on both benchmarking and knowledge about browser string\n// data structures (which currently switch structure types at 12 bytes or more)\nvar TEXT_DECODER_MIN_LENGTH = 12;\nvar utf8TextDecoder = typeof TextDecoder === 'undefined' ? null : new TextDecoder('utf8');\n\nPbf.prototype = {\n\n destroy: function() {\n this.buf = null;\n },\n\n // === READING =================================================================\n\n readFields: function(readField, result, end) {\n end = end || this.length;\n\n while (this.pos < end) {\n var val = this.readVarint(),\n tag = val >> 3,\n startPos = this.pos;\n\n this.type = val & 0x7;\n readField(tag, result, this);\n\n if (this.pos === startPos) this.skip(val);\n }\n return result;\n },\n\n readMessage: function(readField, result) {\n return this.readFields(readField, result, this.readVarint() + this.pos);\n },\n\n readFixed32: function() {\n var val = readUInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n readSFixed32: function() {\n var val = readInt32(this.buf, this.pos);\n this.pos += 4;\n return val;\n },\n\n // 64-bit int handling is based on github.com/dpw/node-buffer-more-ints (MIT-licensed)\n\n readFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readUInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readSFixed64: function() {\n var val = readUInt32(this.buf, this.pos) + readInt32(this.buf, this.pos + 4) * SHIFT_LEFT_32;\n this.pos += 8;\n return val;\n },\n\n readFloat: function() {\n var val = ieee754.read(this.buf, this.pos, true, 23, 4);\n this.pos += 4;\n return val;\n },\n\n readDouble: function() {\n var val = ieee754.read(this.buf, this.pos, true, 52, 8);\n this.pos += 8;\n return val;\n },\n\n readVarint: function(isSigned) {\n var buf = this.buf,\n val, b;\n\n b = buf[this.pos++]; val = b & 0x7f; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 7; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 14; if (b < 0x80) return val;\n b = buf[this.pos++]; val |= (b & 0x7f) << 21; if (b < 0x80) return val;\n b = buf[this.pos]; val |= (b & 0x0f) << 28;\n\n return readVarintRemainder(val, isSigned, this);\n },\n\n readVarint64: function() { // for compatibility with v2.0.1\n return this.readVarint(true);\n },\n\n readSVarint: function() {\n var num = this.readVarint();\n return num % 2 === 1 ? (num + 1) / -2 : num / 2; // zigzag encoding\n },\n\n readBoolean: function() {\n return Boolean(this.readVarint());\n },\n\n readString: function() {\n var end = this.readVarint() + this.pos;\n var pos = this.pos;\n this.pos = end;\n\n if (end - pos >= TEXT_DECODER_MIN_LENGTH && utf8TextDecoder) {\n // longer strings are fast with the built-in browser TextDecoder API\n return readUtf8TextDecoder(this.buf, pos, end);\n }\n // short strings are fast with our custom implementation\n return readUtf8(this.buf, pos, end);\n },\n\n readBytes: function() {\n var end = this.readVarint() + this.pos,\n buffer = this.buf.subarray(this.pos, end);\n this.pos = end;\n return buffer;\n },\n\n // verbose for performance reasons; doesn't affect gzipped size\n\n readPackedVarint: function(arr, isSigned) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readVarint(isSigned));\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readVarint(isSigned));\n return arr;\n },\n readPackedSVarint: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSVarint());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSVarint());\n return arr;\n },\n readPackedBoolean: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readBoolean());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readBoolean());\n return arr;\n },\n readPackedFloat: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFloat());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFloat());\n return arr;\n },\n readPackedDouble: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readDouble());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readDouble());\n return arr;\n },\n readPackedFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed32());\n return arr;\n },\n readPackedSFixed32: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed32());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed32());\n return arr;\n },\n readPackedFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readFixed64());\n return arr;\n },\n readPackedSFixed64: function(arr) {\n if (this.type !== Pbf.Bytes) return arr.push(this.readSFixed64());\n var end = readPackedEnd(this);\n arr = arr || [];\n while (this.pos < end) arr.push(this.readSFixed64());\n return arr;\n },\n\n skip: function(val) {\n var type = val & 0x7;\n if (type === Pbf.Varint) while (this.buf[this.pos++] > 0x7f) {}\n else if (type === Pbf.Bytes) this.pos = this.readVarint() + this.pos;\n else if (type === Pbf.Fixed32) this.pos += 4;\n else if (type === Pbf.Fixed64) this.pos += 8;\n else throw new Error('Unimplemented type: ' + type);\n },\n\n // === WRITING =================================================================\n\n writeTag: function(tag, type) {\n this.writeVarint((tag << 3) | type);\n },\n\n realloc: function(min) {\n var length = this.length || 16;\n\n while (length < this.pos + min) length *= 2;\n\n if (length !== this.length) {\n var buf = new Uint8Array(length);\n buf.set(this.buf);\n this.buf = buf;\n this.length = length;\n }\n },\n\n finish: function() {\n this.length = this.pos;\n this.pos = 0;\n return this.buf.subarray(0, this.length);\n },\n\n writeFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeSFixed32: function(val) {\n this.realloc(4);\n writeInt32(this.buf, val, this.pos);\n this.pos += 4;\n },\n\n writeFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeSFixed64: function(val) {\n this.realloc(8);\n writeInt32(this.buf, val & -1, this.pos);\n writeInt32(this.buf, Math.floor(val * SHIFT_RIGHT_32), this.pos + 4);\n this.pos += 8;\n },\n\n writeVarint: function(val) {\n val = +val || 0;\n\n if (val > 0xfffffff || val < 0) {\n writeBigVarint(val, this);\n return;\n }\n\n this.realloc(4);\n\n this.buf[this.pos++] = val & 0x7f | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = ((val >>>= 7) & 0x7f) | (val > 0x7f ? 0x80 : 0); if (val <= 0x7f) return;\n this.buf[this.pos++] = (val >>> 7) & 0x7f;\n },\n\n writeSVarint: function(val) {\n this.writeVarint(val < 0 ? -val * 2 - 1 : val * 2);\n },\n\n writeBoolean: function(val) {\n this.writeVarint(Boolean(val));\n },\n\n writeString: function(str) {\n str = String(str);\n this.realloc(str.length * 4);\n\n this.pos++; // reserve 1 byte for short string length\n\n var startPos = this.pos;\n // write the string directly to the buffer and see how much was written\n this.pos = writeUtf8(this.buf, str, this.pos);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeFloat: function(val) {\n this.realloc(4);\n ieee754.write(this.buf, val, this.pos, true, 23, 4);\n this.pos += 4;\n },\n\n writeDouble: function(val) {\n this.realloc(8);\n ieee754.write(this.buf, val, this.pos, true, 52, 8);\n this.pos += 8;\n },\n\n writeBytes: function(buffer) {\n var len = buffer.length;\n this.writeVarint(len);\n this.realloc(len);\n for (var i = 0; i < len; i++) this.buf[this.pos++] = buffer[i];\n },\n\n writeRawMessage: function(fn, obj) {\n this.pos++; // reserve 1 byte for short message length\n\n // write the message directly to the buffer and see how much was written\n var startPos = this.pos;\n fn(obj, this);\n var len = this.pos - startPos;\n\n if (len >= 0x80) makeRoomForExtraLength(startPos, len, this);\n\n // finally, write the message length in the reserved place and restore the position\n this.pos = startPos - 1;\n this.writeVarint(len);\n this.pos += len;\n },\n\n writeMessage: function(tag, fn, obj) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeRawMessage(fn, obj);\n },\n\n writePackedVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedVarint, arr); },\n writePackedSVarint: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSVarint, arr); },\n writePackedBoolean: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedBoolean, arr); },\n writePackedFloat: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFloat, arr); },\n writePackedDouble: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedDouble, arr); },\n writePackedFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed32, arr); },\n writePackedSFixed32: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed32, arr); },\n writePackedFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedFixed64, arr); },\n writePackedSFixed64: function(tag, arr) { if (arr.length) this.writeMessage(tag, writePackedSFixed64, arr); },\n\n writeBytesField: function(tag, buffer) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeBytes(buffer);\n },\n writeFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFixed32(val);\n },\n writeSFixed32Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeSFixed32(val);\n },\n writeFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeFixed64(val);\n },\n writeSFixed64Field: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeSFixed64(val);\n },\n writeVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeVarint(val);\n },\n writeSVarintField: function(tag, val) {\n this.writeTag(tag, Pbf.Varint);\n this.writeSVarint(val);\n },\n writeStringField: function(tag, str) {\n this.writeTag(tag, Pbf.Bytes);\n this.writeString(str);\n },\n writeFloatField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed32);\n this.writeFloat(val);\n },\n writeDoubleField: function(tag, val) {\n this.writeTag(tag, Pbf.Fixed64);\n this.writeDouble(val);\n },\n writeBooleanField: function(tag, val) {\n this.writeVarintField(tag, Boolean(val));\n }\n};\n\nfunction readVarintRemainder(l, s, p) {\n var buf = p.buf,\n h, b;\n\n b = buf[p.pos++]; h = (b & 0x70) >> 4; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 3; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 10; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 17; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x7f) << 24; if (b < 0x80) return toNum(l, h, s);\n b = buf[p.pos++]; h |= (b & 0x01) << 31; if (b < 0x80) return toNum(l, h, s);\n\n throw new Error('Expected varint not more than 10 bytes');\n}\n\nfunction readPackedEnd(pbf) {\n return pbf.type === Pbf.Bytes ?\n pbf.readVarint() + pbf.pos : pbf.pos + 1;\n}\n\nfunction toNum(low, high, isSigned) {\n if (isSigned) {\n return high * 0x100000000 + (low >>> 0);\n }\n\n return ((high >>> 0) * 0x100000000) + (low >>> 0);\n}\n\nfunction writeBigVarint(val, pbf) {\n var low, high;\n\n if (val >= 0) {\n low = (val % 0x100000000) | 0;\n high = (val / 0x100000000) | 0;\n } else {\n low = ~(-val % 0x100000000);\n high = ~(-val / 0x100000000);\n\n if (low ^ 0xffffffff) {\n low = (low + 1) | 0;\n } else {\n low = 0;\n high = (high + 1) | 0;\n }\n }\n\n if (val >= 0x10000000000000000 || val < -0x10000000000000000) {\n throw new Error('Given varint doesn\\'t fit into 10 bytes');\n }\n\n pbf.realloc(10);\n\n writeBigVarintLow(low, high, pbf);\n writeBigVarintHigh(high, pbf);\n}\n\nfunction writeBigVarintLow(low, high, pbf) {\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos++] = low & 0x7f | 0x80; low >>>= 7;\n pbf.buf[pbf.pos] = low & 0x7f;\n}\n\nfunction writeBigVarintHigh(high, pbf) {\n var lsb = (high & 0x07) << 4;\n\n pbf.buf[pbf.pos++] |= lsb | ((high >>>= 3) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f | ((high >>>= 7) ? 0x80 : 0); if (!high) return;\n pbf.buf[pbf.pos++] = high & 0x7f;\n}\n\nfunction makeRoomForExtraLength(startPos, len, pbf) {\n var extraLen =\n len <= 0x3fff ? 1 :\n len <= 0x1fffff ? 2 :\n len <= 0xfffffff ? 3 : Math.floor(Math.log(len) / (Math.LN2 * 7));\n\n // if 1 byte isn't enough for encoding message length, shift the data to the right\n pbf.realloc(extraLen);\n for (var i = pbf.pos - 1; i >= startPos; i--) pbf.buf[i + extraLen] = pbf.buf[i];\n}\n\nfunction writePackedVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeVarint(arr[i]); }\nfunction writePackedSVarint(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSVarint(arr[i]); }\nfunction writePackedFloat(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFloat(arr[i]); }\nfunction writePackedDouble(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeDouble(arr[i]); }\nfunction writePackedBoolean(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeBoolean(arr[i]); }\nfunction writePackedFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed32(arr[i]); }\nfunction writePackedSFixed32(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed32(arr[i]); }\nfunction writePackedFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeFixed64(arr[i]); }\nfunction writePackedSFixed64(arr, pbf) { for (var i = 0; i < arr.length; i++) pbf.writeSFixed64(arr[i]); }\n\n// Buffer code below from https://github.com/feross/buffer, MIT-licensed\n\nfunction readUInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] * 0x1000000);\n}\n\nfunction writeInt32(buf, val, pos) {\n buf[pos] = val;\n buf[pos + 1] = (val >>> 8);\n buf[pos + 2] = (val >>> 16);\n buf[pos + 3] = (val >>> 24);\n}\n\nfunction readInt32(buf, pos) {\n return ((buf[pos]) |\n (buf[pos + 1] << 8) |\n (buf[pos + 2] << 16)) +\n (buf[pos + 3] << 24);\n}\n\nfunction readUtf8(buf, pos, end) {\n var str = '';\n var i = pos;\n\n while (i < end) {\n var b0 = buf[i];\n var c = null; // codepoint\n var bytesPerSequence =\n b0 > 0xEF ? 4 :\n b0 > 0xDF ? 3 :\n b0 > 0xBF ? 2 : 1;\n\n if (i + bytesPerSequence > end) break;\n\n var b1, b2, b3;\n\n if (bytesPerSequence === 1) {\n if (b0 < 0x80) {\n c = b0;\n }\n } else if (bytesPerSequence === 2) {\n b1 = buf[i + 1];\n if ((b1 & 0xC0) === 0x80) {\n c = (b0 & 0x1F) << 0x6 | (b1 & 0x3F);\n if (c <= 0x7F) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 3) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0xC | (b1 & 0x3F) << 0x6 | (b2 & 0x3F);\n if (c <= 0x7FF || (c >= 0xD800 && c <= 0xDFFF)) {\n c = null;\n }\n }\n } else if (bytesPerSequence === 4) {\n b1 = buf[i + 1];\n b2 = buf[i + 2];\n b3 = buf[i + 3];\n if ((b1 & 0xC0) === 0x80 && (b2 & 0xC0) === 0x80 && (b3 & 0xC0) === 0x80) {\n c = (b0 & 0xF) << 0x12 | (b1 & 0x3F) << 0xC | (b2 & 0x3F) << 0x6 | (b3 & 0x3F);\n if (c <= 0xFFFF || c >= 0x110000) {\n c = null;\n }\n }\n }\n\n if (c === null) {\n c = 0xFFFD;\n bytesPerSequence = 1;\n\n } else if (c > 0xFFFF) {\n c -= 0x10000;\n str += String.fromCharCode(c >>> 10 & 0x3FF | 0xD800);\n c = 0xDC00 | c & 0x3FF;\n }\n\n str += String.fromCharCode(c);\n i += bytesPerSequence;\n }\n\n return str;\n}\n\nfunction readUtf8TextDecoder(buf, pos, end) {\n return utf8TextDecoder.decode(buf.subarray(pos, end));\n}\n\nfunction writeUtf8(buf, str, pos) {\n for (var i = 0, c, lead; i < str.length; i++) {\n c = str.charCodeAt(i); // code point\n\n if (c > 0xD7FF && c < 0xE000) {\n if (lead) {\n if (c < 0xDC00) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = c;\n continue;\n } else {\n c = lead - 0xD800 << 10 | c - 0xDC00 | 0x10000;\n lead = null;\n }\n } else {\n if (c > 0xDBFF || (i + 1 === str.length)) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n } else {\n lead = c;\n }\n continue;\n }\n } else if (lead) {\n buf[pos++] = 0xEF;\n buf[pos++] = 0xBF;\n buf[pos++] = 0xBD;\n lead = null;\n }\n\n if (c < 0x80) {\n buf[pos++] = c;\n } else {\n if (c < 0x800) {\n buf[pos++] = c >> 0x6 | 0xC0;\n } else {\n if (c < 0x10000) {\n buf[pos++] = c >> 0xC | 0xE0;\n } else {\n buf[pos++] = c >> 0x12 | 0xF0;\n buf[pos++] = c >> 0xC & 0x3F | 0x80;\n }\n buf[pos++] = c >> 0x6 & 0x3F | 0x80;\n }\n buf[pos++] = c & 0x3F | 0x80;\n }\n }\n return pos;\n}\n","import { decode } from \"geobuf\";\r\nimport inside from \"@turf/boolean-point-in-polygon\";\r\nimport { point } from \"@turf/helpers\";\r\nimport Pbf from \"pbf\";\r\n\r\nimport { getTimezoneAtSea, oceanZones } from \"./oceanUtils\";\r\n\r\ntype GeoDataSource =\r\n | string\r\n | ((start: number, end: number) => Promise);\r\ntype TzDataSource = string | (() => Promise);\r\n\r\n/**\r\n * Initialize the GeoTZ module with the given data sources.\r\n *\r\n * @param geoDataSource A string of the URL of the GeoJSON data or a function that returns an ArrayBuffer given a byte range.\r\n * @param tzDataSource A string of the URL of the index.json data or a function that returns an object.\r\n * @returns An object with a find function that can be used to find the timezone ID(s) at the given GPS coordinates.\r\n */\r\nexport function init(\r\n geoDataSource: GeoDataSource = \"https://cdn.jsdelivr.net/npm/geo-tz@latest/data/timezones-1970.geojson.geo.dat\",\r\n tzDataSource: TzDataSource = \"https://cdn.jsdelivr.net/npm/geo-tz@latest/data/timezones-1970.geojson.index.json\",\r\n) {\r\n const geoData =\r\n typeof geoDataSource === \"string\"\r\n ? async (start: number, end: number) => {\r\n const response = await fetch(geoDataSource, {\r\n headers: { Range: `bytes=${start}-${end}` },\r\n });\r\n return await response.arrayBuffer();\r\n }\r\n : geoDataSource;\r\n\r\n let tzDataPromise: Promise | null = null;\r\n\r\n const tzData =\r\n typeof tzDataSource === \"string\"\r\n ? async () => {\r\n if (tzDataPromise) {\r\n return await tzDataPromise;\r\n }\r\n const promise = fetch(tzDataSource).then((response) =>\r\n response.json(),\r\n );\r\n tzDataPromise = promise;\r\n return await promise;\r\n }\r\n : tzDataSource;\r\n\r\n return {\r\n /**\r\n * Find the timezone ID(s) at the given GPS coordinates.\r\n *\r\n * @param lat latitude (must be >= -90 and <=90)\r\n * @param lon longitue (must be >= -180 and <=180)\r\n * @returns An array of string of TZIDs at the given coordinate.\r\n */\r\n find: async (lat: number, lon: number) => {\r\n return await findImpl(geoData, tzData, lat, lon);\r\n },\r\n };\r\n}\r\n\r\n/**\r\n * Find the timezone ID(s) at the given GPS coordinates. This is identical to calling\r\n * `init()` and then calling `find()`.\r\n *\r\n * @param lat latitude (must be >= -90 and <=90)\r\n * @param lon longitue (must be >= -180 and <=180)\r\n * @returns An array of string of TZIDs at the given coordinate.\r\n */\r\nexport async function find(lat: number, lon: number): Promise {\r\n return await init().find(lat, lon);\r\n}\r\n\r\nasync function findImpl(\r\n geoData: (start: number, end: number) => Promise,\r\n tzData: () => Promise,\r\n lat: number,\r\n lon: number,\r\n): Promise {\r\n const originalLon = lon;\r\n\r\n let err;\r\n\r\n // validate latitude\r\n if (isNaN(lat) || lat > 90 || lat < -90) {\r\n err = new Error(\"Invalid latitude: \" + lat);\r\n throw err;\r\n }\r\n\r\n // validate longitude\r\n if (isNaN(lon) || lon > 180 || lon < -180) {\r\n err = new Error(\"Invalid longitude: \" + lon);\r\n throw err;\r\n }\r\n\r\n // North Pole should return all ocean zones\r\n if (lat === 90) {\r\n return oceanZones.map((zone) => zone.tzid);\r\n }\r\n\r\n // fix edges of the world\r\n if (lat >= 89.9999) {\r\n lat = 89.9999;\r\n } else if (lat <= -89.9999) {\r\n lat = -89.9999;\r\n }\r\n\r\n if (lon >= 179.9999) {\r\n lon = 179.9999;\r\n } else if (lon <= -179.9999) {\r\n lon = -179.9999;\r\n }\r\n\r\n const pt = point([lon, lat]);\r\n\r\n // get exact boundaries\r\n const quadData = {\r\n top: 89.9999,\r\n bottom: -89.9999,\r\n left: -179.9999,\r\n right: 179.9999,\r\n midLat: 0,\r\n midLon: 0,\r\n };\r\n let quadPos = \"\";\r\n\r\n const tzDataResponse = await tzData();\r\n\r\n let curTzData = tzDataResponse.lookup;\r\n\r\n while (true) {\r\n // calculate next quadtree position\r\n let nextQuad;\r\n if (lat >= quadData.midLat && lon >= quadData.midLon) {\r\n nextQuad = \"a\";\r\n quadData.bottom = quadData.midLat;\r\n quadData.left = quadData.midLon;\r\n } else if (lat >= quadData.midLat && lon < quadData.midLon) {\r\n nextQuad = \"b\";\r\n quadData.bottom = quadData.midLat;\r\n quadData.right = quadData.midLon;\r\n } else if (lat < quadData.midLat && lon < quadData.midLon) {\r\n nextQuad = \"c\";\r\n quadData.top = quadData.midLat;\r\n quadData.right = quadData.midLon;\r\n } else {\r\n nextQuad = \"d\";\r\n quadData.top = quadData.midLat;\r\n quadData.left = quadData.midLon;\r\n }\r\n\r\n // console.log(nextQuad)\r\n curTzData = curTzData[nextQuad];\r\n // console.log()\r\n quadPos += nextQuad;\r\n\r\n // analyze result of current depth\r\n if (!curTzData) {\r\n // no timezone in this quad, therefore must be timezone at sea\r\n return getTimezoneAtSea(originalLon);\r\n } else if (curTzData.pos >= 0 && curTzData.len) {\r\n // get exact boundaries\r\n const bufSlice = await geoData(\r\n curTzData.pos,\r\n curTzData.pos + curTzData.len - 1,\r\n );\r\n const geoJson = decode(new Pbf(bufSlice));\r\n\r\n const timezonesContainingPoint = [];\r\n\r\n if (geoJson.type === \"FeatureCollection\") {\r\n for (let i = 0; i < geoJson.features.length; i++) {\r\n if (inside(pt, geoJson.features[i] as any)) {\r\n const properties = geoJson.features[i].properties;\r\n if (properties) {\r\n timezonesContainingPoint.push(properties.tzid);\r\n }\r\n }\r\n }\r\n } else if (geoJson.type === \"Feature\") {\r\n if (inside(pt, geoJson as any) && geoJson.properties) {\r\n timezonesContainingPoint.push(geoJson.properties.tzid);\r\n }\r\n }\r\n\r\n // if at least one timezone contained the point, return those timezones,\r\n // otherwise must be timezone at sea\r\n return timezonesContainingPoint.length > 0\r\n ? timezonesContainingPoint\r\n : getTimezoneAtSea(originalLon);\r\n } else if (curTzData.length > 0) {\r\n // exact match found\r\n const timezones = tzDataResponse.timezones;\r\n return curTzData.map((idx: number) => timezones[idx]);\r\n } else if (typeof curTzData !== \"object\") {\r\n // not another nested quad index, throw error\r\n err = new Error(\"Unexpected data type\");\r\n throw err;\r\n }\r\n\r\n // calculate next quadtree depth data\r\n quadData.midLat = (quadData.top + quadData.bottom) / 2;\r\n quadData.midLon = (quadData.left + quadData.right) / 2;\r\n }\r\n}\r\n\r\nexport function toOffset(timeZone: string) {\r\n const date = new Date();\r\n const utcDate = new Date(date.toLocaleString(\"en-US\", { timeZone: \"UTC\" }));\r\n const tzDate = new Date(date.toLocaleString(\"en-US\", { timeZone }));\r\n return (tzDate.getTime() - utcDate.getTime()) / 6e4;\r\n}\r\n","type OceanZone = {\r\n left: number\r\n right: number\r\n tzid: string\r\n}\r\n\r\nexport const oceanZones: OceanZone[] = [\r\n { tzid: 'Etc/GMT-12', left: 172.5, right: 180 },\r\n { tzid: 'Etc/GMT-11', left: 157.5, right: 172.5 },\r\n { tzid: 'Etc/GMT-10', left: 142.5, right: 157.5 },\r\n { tzid: 'Etc/GMT-9', left: 127.5, right: 142.5 },\r\n { tzid: 'Etc/GMT-8', left: 112.5, right: 127.5 },\r\n { tzid: 'Etc/GMT-7', left: 97.5, right: 112.5 },\r\n { tzid: 'Etc/GMT-6', left: 82.5, right: 97.5 },\r\n { tzid: 'Etc/GMT-5', left: 67.5, right: 82.5 },\r\n { tzid: 'Etc/GMT-4', left: 52.5, right: 67.5 },\r\n { tzid: 'Etc/GMT-3', left: 37.5, right: 52.5 },\r\n { tzid: 'Etc/GMT-2', left: 22.5, right: 37.5 },\r\n { tzid: 'Etc/GMT-1', left: 7.5, right: 22.5 },\r\n { tzid: 'Etc/GMT', left: -7.5, right: 7.5 },\r\n { tzid: 'Etc/GMT+1', left: -22.5, right: -7.5 },\r\n { tzid: 'Etc/GMT+2', left: -37.5, right: -22.5 },\r\n { tzid: 'Etc/GMT+3', left: -52.5, right: -37.5 },\r\n { tzid: 'Etc/GMT+4', left: -67.5, right: -52.5 },\r\n { tzid: 'Etc/GMT+5', left: -82.5, right: -67.5 },\r\n { tzid: 'Etc/GMT+6', left: -97.5, right: -82.5 },\r\n { tzid: 'Etc/GMT+7', left: -112.5, right: -97.5 },\r\n { tzid: 'Etc/GMT+8', left: -127.5, right: -112.5 },\r\n { tzid: 'Etc/GMT+9', left: -142.5, right: -127.5 },\r\n { tzid: 'Etc/GMT+10', left: -157.5, right: -142.5 },\r\n { tzid: 'Etc/GMT+11', left: -172.5, right: -157.5 },\r\n { tzid: 'Etc/GMT+12', left: -180, right: -172.5 },\r\n]\r\n\r\n/**\r\n * Find the Etc/GMT* timezone name(s) corresponding to the given longitue.\r\n *\r\n * @param lon The longitude to analyze\r\n * @returns An array of strings of TZIDs\r\n */\r\nexport function getTimezoneAtSea(lon: number): string[] {\r\n // coordinates along the 180 longitude should return two zones\r\n if (lon === -180 || lon === 180) {\r\n return ['Etc/GMT+12', 'Etc/GMT-12']\r\n }\r\n const tzs = []\r\n for (let i = 0; i < oceanZones.length; i++) {\r\n const z = oceanZones[i]\r\n if (z.left <= lon && z.right >= lon) {\r\n tzs.push(z.tzid)\r\n } else if (z.right < lon) {\r\n break\r\n }\r\n }\r\n return tzs\r\n}\r\n","export const epsilon = 1.1102230246251565e-16;\nexport const splitter = 134217729;\nexport const resulterrbound = (3 + 8 * epsilon) * epsilon;\n\n// fast_expansion_sum_zeroelim routine from oritinal code\nexport function sum(elen, e, flen, f, h) {\n let Q, Qnew, hh, bvirt;\n let enow = e[0];\n let fnow = f[0];\n let eindex = 0;\n let findex = 0;\n if ((fnow > enow) === (fnow > -enow)) {\n Q = enow;\n enow = e[++eindex];\n } else {\n Q = fnow;\n fnow = f[++findex];\n }\n let hindex = 0;\n if (eindex < elen && findex < flen) {\n if ((fnow > enow) === (fnow > -enow)) {\n Qnew = enow + Q;\n hh = Q - (Qnew - enow);\n enow = e[++eindex];\n } else {\n Qnew = fnow + Q;\n hh = Q - (Qnew - fnow);\n fnow = f[++findex];\n }\n Q = Qnew;\n if (hh !== 0) {\n h[hindex++] = hh;\n }\n while (eindex < elen && findex < flen) {\n if ((fnow > enow) === (fnow > -enow)) {\n Qnew = Q + enow;\n bvirt = Qnew - Q;\n hh = Q - (Qnew - bvirt) + (enow - bvirt);\n enow = e[++eindex];\n } else {\n Qnew = Q + fnow;\n bvirt = Qnew - Q;\n hh = Q - (Qnew - bvirt) + (fnow - bvirt);\n fnow = f[++findex];\n }\n Q = Qnew;\n if (hh !== 0) {\n h[hindex++] = hh;\n }\n }\n }\n while (eindex < elen) {\n Qnew = Q + enow;\n bvirt = Qnew - Q;\n hh = Q - (Qnew - bvirt) + (enow - bvirt);\n enow = e[++eindex];\n Q = Qnew;\n if (hh !== 0) {\n h[hindex++] = hh;\n }\n }\n while (findex < flen) {\n Qnew = Q + fnow;\n bvirt = Qnew - Q;\n hh = Q - (Qnew - bvirt) + (fnow - bvirt);\n fnow = f[++findex];\n Q = Qnew;\n if (hh !== 0) {\n h[hindex++] = hh;\n }\n }\n if (Q !== 0 || hindex === 0) {\n h[hindex++] = Q;\n }\n return hindex;\n}\n\nexport function sum_three(alen, a, blen, b, clen, c, tmp, out) {\n return sum(sum(alen, a, blen, b, tmp), tmp, clen, c, out);\n}\n\n// scale_expansion_zeroelim routine from oritinal code\nexport function scale(elen, e, b, h) {\n let Q, sum, hh, product1, product0;\n let bvirt, c, ahi, alo, bhi, blo;\n\n c = splitter * b;\n bhi = c - (c - b);\n blo = b - bhi;\n let enow = e[0];\n Q = enow * b;\n c = splitter * enow;\n ahi = c - (c - enow);\n alo = enow - ahi;\n hh = alo * blo - (Q - ahi * bhi - alo * bhi - ahi * blo);\n let hindex = 0;\n if (hh !== 0) {\n h[hindex++] = hh;\n }\n for (let i = 1; i < elen; i++) {\n enow = e[i];\n product1 = enow * b;\n c = splitter * enow;\n ahi = c - (c - enow);\n alo = enow - ahi;\n product0 = alo * blo - (product1 - ahi * bhi - alo * bhi - ahi * blo);\n sum = Q + product0;\n bvirt = sum - Q;\n hh = Q - (sum - bvirt) + (product0 - bvirt);\n if (hh !== 0) {\n h[hindex++] = hh;\n }\n Q = product1 + sum;\n hh = sum - (Q - product1);\n if (hh !== 0) {\n h[hindex++] = hh;\n }\n }\n if (Q !== 0 || hindex === 0) {\n h[hindex++] = Q;\n }\n return hindex;\n}\n\nexport function negate(elen, e) {\n for (let i = 0; i < elen; i++) e[i] = -e[i];\n return elen;\n}\n\nexport function estimate(elen, e) {\n let Q = e[0];\n for (let i = 1; i < elen; i++) Q += e[i];\n return Q;\n}\n\nexport function vec(n) {\n return new Float64Array(n);\n}\n","import {epsilon, splitter, resulterrbound, estimate, vec, sum} from './util.js';\n\nconst ccwerrboundA = (3 + 16 * epsilon) * epsilon;\nconst ccwerrboundB = (2 + 12 * epsilon) * epsilon;\nconst ccwerrboundC = (9 + 64 * epsilon) * epsilon * epsilon;\n\nconst B = vec(4);\nconst C1 = vec(8);\nconst C2 = vec(12);\nconst D = vec(16);\nconst u = vec(4);\n\nfunction orient2dadapt(ax, ay, bx, by, cx, cy, detsum) {\n let acxtail, acytail, bcxtail, bcytail;\n let bvirt, c, ahi, alo, bhi, blo, _i, _j, _0, s1, s0, t1, t0, u3;\n\n const acx = ax - cx;\n const bcx = bx - cx;\n const acy = ay - cy;\n const bcy = by - cy;\n\n s1 = acx * bcy;\n c = splitter * acx;\n ahi = c - (c - acx);\n alo = acx - ahi;\n c = splitter * bcy;\n bhi = c - (c - bcy);\n blo = bcy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = acy * bcx;\n c = splitter * acy;\n ahi = c - (c - acy);\n alo = acy - ahi;\n c = splitter * bcx;\n bhi = c - (c - bcx);\n blo = bcx - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n B[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n B[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n B[2] = _j - (u3 - bvirt) + (_i - bvirt);\n B[3] = u3;\n\n let det = estimate(4, B);\n let errbound = ccwerrboundB * detsum;\n if (det >= errbound || -det >= errbound) {\n return det;\n }\n\n bvirt = ax - acx;\n acxtail = ax - (acx + bvirt) + (bvirt - cx);\n bvirt = bx - bcx;\n bcxtail = bx - (bcx + bvirt) + (bvirt - cx);\n bvirt = ay - acy;\n acytail = ay - (acy + bvirt) + (bvirt - cy);\n bvirt = by - bcy;\n bcytail = by - (bcy + bvirt) + (bvirt - cy);\n\n if (acxtail === 0 && acytail === 0 && bcxtail === 0 && bcytail === 0) {\n return det;\n }\n\n errbound = ccwerrboundC * detsum + resulterrbound * Math.abs(det);\n det += (acx * bcytail + bcy * acxtail) - (acy * bcxtail + bcx * acytail);\n if (det >= errbound || -det >= errbound) return det;\n\n s1 = acxtail * bcy;\n c = splitter * acxtail;\n ahi = c - (c - acxtail);\n alo = acxtail - ahi;\n c = splitter * bcy;\n bhi = c - (c - bcy);\n blo = bcy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = acytail * bcx;\n c = splitter * acytail;\n ahi = c - (c - acytail);\n alo = acytail - ahi;\n c = splitter * bcx;\n bhi = c - (c - bcx);\n blo = bcx - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n u[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n u[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n u[2] = _j - (u3 - bvirt) + (_i - bvirt);\n u[3] = u3;\n const C1len = sum(4, B, 4, u, C1);\n\n s1 = acx * bcytail;\n c = splitter * acx;\n ahi = c - (c - acx);\n alo = acx - ahi;\n c = splitter * bcytail;\n bhi = c - (c - bcytail);\n blo = bcytail - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = acy * bcxtail;\n c = splitter * acy;\n ahi = c - (c - acy);\n alo = acy - ahi;\n c = splitter * bcxtail;\n bhi = c - (c - bcxtail);\n blo = bcxtail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n u[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n u[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n u[2] = _j - (u3 - bvirt) + (_i - bvirt);\n u[3] = u3;\n const C2len = sum(C1len, C1, 4, u, C2);\n\n s1 = acxtail * bcytail;\n c = splitter * acxtail;\n ahi = c - (c - acxtail);\n alo = acxtail - ahi;\n c = splitter * bcytail;\n bhi = c - (c - bcytail);\n blo = bcytail - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = acytail * bcxtail;\n c = splitter * acytail;\n ahi = c - (c - acytail);\n alo = acytail - ahi;\n c = splitter * bcxtail;\n bhi = c - (c - bcxtail);\n blo = bcxtail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n u[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n u[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n u[2] = _j - (u3 - bvirt) + (_i - bvirt);\n u[3] = u3;\n const Dlen = sum(C2len, C2, 4, u, D);\n\n return D[Dlen - 1];\n}\n\nexport function orient2d(ax, ay, bx, by, cx, cy) {\n const detleft = (ay - cy) * (bx - cx);\n const detright = (ax - cx) * (by - cy);\n const det = detleft - detright;\n\n const detsum = Math.abs(detleft + detright);\n if (Math.abs(det) >= ccwerrboundA * detsum) return det;\n\n return -orient2dadapt(ax, ay, bx, by, cx, cy, detsum);\n}\n\nexport function orient2dfast(ax, ay, bx, by, cx, cy) {\n return (ay - cy) * (bx - cx) - (ax - cx) * (by - cy);\n}\n","import {epsilon, splitter, resulterrbound, estimate, vec, sum, scale} from './util.js';\n\nconst o3derrboundA = (7 + 56 * epsilon) * epsilon;\nconst o3derrboundB = (3 + 28 * epsilon) * epsilon;\nconst o3derrboundC = (26 + 288 * epsilon) * epsilon * epsilon;\n\nconst bc = vec(4);\nconst ca = vec(4);\nconst ab = vec(4);\nconst at_b = vec(4);\nconst at_c = vec(4);\nconst bt_c = vec(4);\nconst bt_a = vec(4);\nconst ct_a = vec(4);\nconst ct_b = vec(4);\nconst bct = vec(8);\nconst cat = vec(8);\nconst abt = vec(8);\nconst u = vec(4);\n\nconst _8 = vec(8);\nconst _8b = vec(8);\nconst _16 = vec(8);\nconst _12 = vec(12);\n\nlet fin = vec(192);\nlet fin2 = vec(192);\n\nfunction finadd(finlen, alen, a) {\n finlen = sum(finlen, fin, alen, a, fin2);\n const tmp = fin; fin = fin2; fin2 = tmp;\n return finlen;\n}\n\nfunction tailinit(xtail, ytail, ax, ay, bx, by, a, b) {\n let bvirt, c, ahi, alo, bhi, blo, _i, _j, _k, _0, s1, s0, t1, t0, u3, negate;\n if (xtail === 0) {\n if (ytail === 0) {\n a[0] = 0;\n b[0] = 0;\n return 1;\n } else {\n negate = -ytail;\n s1 = negate * ax;\n c = splitter * negate;\n ahi = c - (c - negate);\n alo = negate - ahi;\n c = splitter * ax;\n bhi = c - (c - ax);\n blo = ax - bhi;\n a[0] = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n a[1] = s1;\n s1 = ytail * bx;\n c = splitter * ytail;\n ahi = c - (c - ytail);\n alo = ytail - ahi;\n c = splitter * bx;\n bhi = c - (c - bx);\n blo = bx - bhi;\n b[0] = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n b[1] = s1;\n return 2;\n }\n } else {\n if (ytail === 0) {\n s1 = xtail * ay;\n c = splitter * xtail;\n ahi = c - (c - xtail);\n alo = xtail - ahi;\n c = splitter * ay;\n bhi = c - (c - ay);\n blo = ay - bhi;\n a[0] = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n a[1] = s1;\n negate = -xtail;\n s1 = negate * by;\n c = splitter * negate;\n ahi = c - (c - negate);\n alo = negate - ahi;\n c = splitter * by;\n bhi = c - (c - by);\n blo = by - bhi;\n b[0] = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n b[1] = s1;\n return 2;\n } else {\n s1 = xtail * ay;\n c = splitter * xtail;\n ahi = c - (c - xtail);\n alo = xtail - ahi;\n c = splitter * ay;\n bhi = c - (c - ay);\n blo = ay - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = ytail * ax;\n c = splitter * ytail;\n ahi = c - (c - ytail);\n alo = ytail - ahi;\n c = splitter * ax;\n bhi = c - (c - ax);\n blo = ax - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n a[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n a[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n a[2] = _j - (u3 - bvirt) + (_i - bvirt);\n a[3] = u3;\n s1 = ytail * bx;\n c = splitter * ytail;\n ahi = c - (c - ytail);\n alo = ytail - ahi;\n c = splitter * bx;\n bhi = c - (c - bx);\n blo = bx - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = xtail * by;\n c = splitter * xtail;\n ahi = c - (c - xtail);\n alo = xtail - ahi;\n c = splitter * by;\n bhi = c - (c - by);\n blo = by - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n b[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n b[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n b[2] = _j - (u3 - bvirt) + (_i - bvirt);\n b[3] = u3;\n return 4;\n }\n }\n}\n\nfunction tailadd(finlen, a, b, k, z) {\n let bvirt, c, ahi, alo, bhi, blo, _i, _j, _k, _0, s1, s0, u3;\n s1 = a * b;\n c = splitter * a;\n ahi = c - (c - a);\n alo = a - ahi;\n c = splitter * b;\n bhi = c - (c - b);\n blo = b - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n c = splitter * k;\n bhi = c - (c - k);\n blo = k - bhi;\n _i = s0 * k;\n c = splitter * s0;\n ahi = c - (c - s0);\n alo = s0 - ahi;\n u[0] = alo * blo - (_i - ahi * bhi - alo * bhi - ahi * blo);\n _j = s1 * k;\n c = splitter * s1;\n ahi = c - (c - s1);\n alo = s1 - ahi;\n _0 = alo * blo - (_j - ahi * bhi - alo * bhi - ahi * blo);\n _k = _i + _0;\n bvirt = _k - _i;\n u[1] = _i - (_k - bvirt) + (_0 - bvirt);\n u3 = _j + _k;\n u[2] = _k - (u3 - _j);\n u[3] = u3;\n finlen = finadd(finlen, 4, u);\n if (z !== 0) {\n c = splitter * z;\n bhi = c - (c - z);\n blo = z - bhi;\n _i = s0 * z;\n c = splitter * s0;\n ahi = c - (c - s0);\n alo = s0 - ahi;\n u[0] = alo * blo - (_i - ahi * bhi - alo * bhi - ahi * blo);\n _j = s1 * z;\n c = splitter * s1;\n ahi = c - (c - s1);\n alo = s1 - ahi;\n _0 = alo * blo - (_j - ahi * bhi - alo * bhi - ahi * blo);\n _k = _i + _0;\n bvirt = _k - _i;\n u[1] = _i - (_k - bvirt) + (_0 - bvirt);\n u3 = _j + _k;\n u[2] = _k - (u3 - _j);\n u[3] = u3;\n finlen = finadd(finlen, 4, u);\n }\n return finlen;\n}\n\nfunction orient3dadapt(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz, permanent) {\n let finlen;\n let adxtail, bdxtail, cdxtail;\n let adytail, bdytail, cdytail;\n let adztail, bdztail, cdztail;\n let bvirt, c, ahi, alo, bhi, blo, _i, _j, _k, _0, s1, s0, t1, t0, u3;\n\n const adx = ax - dx;\n const bdx = bx - dx;\n const cdx = cx - dx;\n const ady = ay - dy;\n const bdy = by - dy;\n const cdy = cy - dy;\n const adz = az - dz;\n const bdz = bz - dz;\n const cdz = cz - dz;\n\n s1 = bdx * cdy;\n c = splitter * bdx;\n ahi = c - (c - bdx);\n alo = bdx - ahi;\n c = splitter * cdy;\n bhi = c - (c - cdy);\n blo = cdy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cdx * bdy;\n c = splitter * cdx;\n ahi = c - (c - cdx);\n alo = cdx - ahi;\n c = splitter * bdy;\n bhi = c - (c - bdy);\n blo = bdy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n bc[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n bc[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n bc[2] = _j - (u3 - bvirt) + (_i - bvirt);\n bc[3] = u3;\n s1 = cdx * ady;\n c = splitter * cdx;\n ahi = c - (c - cdx);\n alo = cdx - ahi;\n c = splitter * ady;\n bhi = c - (c - ady);\n blo = ady - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = adx * cdy;\n c = splitter * adx;\n ahi = c - (c - adx);\n alo = adx - ahi;\n c = splitter * cdy;\n bhi = c - (c - cdy);\n blo = cdy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ca[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ca[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ca[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ca[3] = u3;\n s1 = adx * bdy;\n c = splitter * adx;\n ahi = c - (c - adx);\n alo = adx - ahi;\n c = splitter * bdy;\n bhi = c - (c - bdy);\n blo = bdy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bdx * ady;\n c = splitter * bdx;\n ahi = c - (c - bdx);\n alo = bdx - ahi;\n c = splitter * ady;\n bhi = c - (c - ady);\n blo = ady - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ab[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ab[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ab[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ab[3] = u3;\n\n finlen = sum(\n sum(\n scale(4, bc, adz, _8), _8,\n scale(4, ca, bdz, _8b), _8b, _16), _16,\n scale(4, ab, cdz, _8), _8, fin);\n\n let det = estimate(finlen, fin);\n let errbound = o3derrboundB * permanent;\n if (det >= errbound || -det >= errbound) {\n return det;\n }\n\n bvirt = ax - adx;\n adxtail = ax - (adx + bvirt) + (bvirt - dx);\n bvirt = bx - bdx;\n bdxtail = bx - (bdx + bvirt) + (bvirt - dx);\n bvirt = cx - cdx;\n cdxtail = cx - (cdx + bvirt) + (bvirt - dx);\n bvirt = ay - ady;\n adytail = ay - (ady + bvirt) + (bvirt - dy);\n bvirt = by - bdy;\n bdytail = by - (bdy + bvirt) + (bvirt - dy);\n bvirt = cy - cdy;\n cdytail = cy - (cdy + bvirt) + (bvirt - dy);\n bvirt = az - adz;\n adztail = az - (adz + bvirt) + (bvirt - dz);\n bvirt = bz - bdz;\n bdztail = bz - (bdz + bvirt) + (bvirt - dz);\n bvirt = cz - cdz;\n cdztail = cz - (cdz + bvirt) + (bvirt - dz);\n\n if (adxtail === 0 && bdxtail === 0 && cdxtail === 0 &&\n adytail === 0 && bdytail === 0 && cdytail === 0 &&\n adztail === 0 && bdztail === 0 && cdztail === 0) {\n return det;\n }\n\n errbound = o3derrboundC * permanent + resulterrbound * Math.abs(det);\n det +=\n adz * (bdx * cdytail + cdy * bdxtail - (bdy * cdxtail + cdx * bdytail)) + adztail * (bdx * cdy - bdy * cdx) +\n bdz * (cdx * adytail + ady * cdxtail - (cdy * adxtail + adx * cdytail)) + bdztail * (cdx * ady - cdy * adx) +\n cdz * (adx * bdytail + bdy * adxtail - (ady * bdxtail + bdx * adytail)) + cdztail * (adx * bdy - ady * bdx);\n if (det >= errbound || -det >= errbound) {\n return det;\n }\n\n const at_len = tailinit(adxtail, adytail, bdx, bdy, cdx, cdy, at_b, at_c);\n const bt_len = tailinit(bdxtail, bdytail, cdx, cdy, adx, ady, bt_c, bt_a);\n const ct_len = tailinit(cdxtail, cdytail, adx, ady, bdx, bdy, ct_a, ct_b);\n\n const bctlen = sum(bt_len, bt_c, ct_len, ct_b, bct);\n finlen = finadd(finlen, scale(bctlen, bct, adz, _16), _16);\n\n const catlen = sum(ct_len, ct_a, at_len, at_c, cat);\n finlen = finadd(finlen, scale(catlen, cat, bdz, _16), _16);\n\n const abtlen = sum(at_len, at_b, bt_len, bt_a, abt);\n finlen = finadd(finlen, scale(abtlen, abt, cdz, _16), _16);\n\n if (adztail !== 0) {\n finlen = finadd(finlen, scale(4, bc, adztail, _12), _12);\n finlen = finadd(finlen, scale(bctlen, bct, adztail, _16), _16);\n }\n if (bdztail !== 0) {\n finlen = finadd(finlen, scale(4, ca, bdztail, _12), _12);\n finlen = finadd(finlen, scale(catlen, cat, bdztail, _16), _16);\n }\n if (cdztail !== 0) {\n finlen = finadd(finlen, scale(4, ab, cdztail, _12), _12);\n finlen = finadd(finlen, scale(abtlen, abt, cdztail, _16), _16);\n }\n\n if (adxtail !== 0) {\n if (bdytail !== 0) {\n finlen = tailadd(finlen, adxtail, bdytail, cdz, cdztail);\n }\n if (cdytail !== 0) {\n finlen = tailadd(finlen, -adxtail, cdytail, bdz, bdztail);\n }\n }\n if (bdxtail !== 0) {\n if (cdytail !== 0) {\n finlen = tailadd(finlen, bdxtail, cdytail, adz, adztail);\n }\n if (adytail !== 0) {\n finlen = tailadd(finlen, -bdxtail, adytail, cdz, cdztail);\n }\n }\n if (cdxtail !== 0) {\n if (adytail !== 0) {\n finlen = tailadd(finlen, cdxtail, adytail, bdz, bdztail);\n }\n if (bdytail !== 0) {\n finlen = tailadd(finlen, -cdxtail, bdytail, adz, adztail);\n }\n }\n\n return fin[finlen - 1];\n}\n\nexport function orient3d(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz) {\n const adx = ax - dx;\n const bdx = bx - dx;\n const cdx = cx - dx;\n const ady = ay - dy;\n const bdy = by - dy;\n const cdy = cy - dy;\n const adz = az - dz;\n const bdz = bz - dz;\n const cdz = cz - dz;\n\n const bdxcdy = bdx * cdy;\n const cdxbdy = cdx * bdy;\n\n const cdxady = cdx * ady;\n const adxcdy = adx * cdy;\n\n const adxbdy = adx * bdy;\n const bdxady = bdx * ady;\n\n const det =\n adz * (bdxcdy - cdxbdy) +\n bdz * (cdxady - adxcdy) +\n cdz * (adxbdy - bdxady);\n\n const permanent =\n (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * Math.abs(adz) +\n (Math.abs(cdxady) + Math.abs(adxcdy)) * Math.abs(bdz) +\n (Math.abs(adxbdy) + Math.abs(bdxady)) * Math.abs(cdz);\n\n const errbound = o3derrboundA * permanent;\n if (det > errbound || -det > errbound) {\n return det;\n }\n\n return orient3dadapt(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz, permanent);\n}\n\nexport function orient3dfast(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz) {\n const adx = ax - dx;\n const bdx = bx - dx;\n const cdx = cx - dx;\n const ady = ay - dy;\n const bdy = by - dy;\n const cdy = cy - dy;\n const adz = az - dz;\n const bdz = bz - dz;\n const cdz = cz - dz;\n\n return adx * (bdy * cdz - bdz * cdy) +\n bdx * (cdy * adz - cdz * ady) +\n cdx * (ady * bdz - adz * bdy);\n}\n","import {epsilon, splitter, resulterrbound, estimate, vec, sum, sum_three, scale} from './util.js';\n\nconst iccerrboundA = (10 + 96 * epsilon) * epsilon;\nconst iccerrboundB = (4 + 48 * epsilon) * epsilon;\nconst iccerrboundC = (44 + 576 * epsilon) * epsilon * epsilon;\n\nconst bc = vec(4);\nconst ca = vec(4);\nconst ab = vec(4);\nconst aa = vec(4);\nconst bb = vec(4);\nconst cc = vec(4);\nconst u = vec(4);\nconst v = vec(4);\nconst axtbc = vec(8);\nconst aytbc = vec(8);\nconst bxtca = vec(8);\nconst bytca = vec(8);\nconst cxtab = vec(8);\nconst cytab = vec(8);\nconst abt = vec(8);\nconst bct = vec(8);\nconst cat = vec(8);\nconst abtt = vec(4);\nconst bctt = vec(4);\nconst catt = vec(4);\n\nconst _8 = vec(8);\nconst _16 = vec(16);\nconst _16b = vec(16);\nconst _16c = vec(16);\nconst _32 = vec(32);\nconst _32b = vec(32);\nconst _48 = vec(48);\nconst _64 = vec(64);\n\nlet fin = vec(1152);\nlet fin2 = vec(1152);\n\nfunction finadd(finlen, a, alen) {\n finlen = sum(finlen, fin, a, alen, fin2);\n const tmp = fin; fin = fin2; fin2 = tmp;\n return finlen;\n}\n\nfunction incircleadapt(ax, ay, bx, by, cx, cy, dx, dy, permanent) {\n let finlen;\n let adxtail, bdxtail, cdxtail, adytail, bdytail, cdytail;\n let axtbclen, aytbclen, bxtcalen, bytcalen, cxtablen, cytablen;\n let abtlen, bctlen, catlen;\n let abttlen, bcttlen, cattlen;\n let n1, n0;\n\n let bvirt, c, ahi, alo, bhi, blo, _i, _j, _0, s1, s0, t1, t0, u3;\n\n const adx = ax - dx;\n const bdx = bx - dx;\n const cdx = cx - dx;\n const ady = ay - dy;\n const bdy = by - dy;\n const cdy = cy - dy;\n\n s1 = bdx * cdy;\n c = splitter * bdx;\n ahi = c - (c - bdx);\n alo = bdx - ahi;\n c = splitter * cdy;\n bhi = c - (c - cdy);\n blo = cdy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cdx * bdy;\n c = splitter * cdx;\n ahi = c - (c - cdx);\n alo = cdx - ahi;\n c = splitter * bdy;\n bhi = c - (c - bdy);\n blo = bdy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n bc[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n bc[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n bc[2] = _j - (u3 - bvirt) + (_i - bvirt);\n bc[3] = u3;\n s1 = cdx * ady;\n c = splitter * cdx;\n ahi = c - (c - cdx);\n alo = cdx - ahi;\n c = splitter * ady;\n bhi = c - (c - ady);\n blo = ady - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = adx * cdy;\n c = splitter * adx;\n ahi = c - (c - adx);\n alo = adx - ahi;\n c = splitter * cdy;\n bhi = c - (c - cdy);\n blo = cdy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ca[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ca[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ca[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ca[3] = u3;\n s1 = adx * bdy;\n c = splitter * adx;\n ahi = c - (c - adx);\n alo = adx - ahi;\n c = splitter * bdy;\n bhi = c - (c - bdy);\n blo = bdy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bdx * ady;\n c = splitter * bdx;\n ahi = c - (c - bdx);\n alo = bdx - ahi;\n c = splitter * ady;\n bhi = c - (c - ady);\n blo = ady - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ab[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ab[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ab[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ab[3] = u3;\n\n finlen = sum(\n sum(\n sum(\n scale(scale(4, bc, adx, _8), _8, adx, _16), _16,\n scale(scale(4, bc, ady, _8), _8, ady, _16b), _16b, _32), _32,\n sum(\n scale(scale(4, ca, bdx, _8), _8, bdx, _16), _16,\n scale(scale(4, ca, bdy, _8), _8, bdy, _16b), _16b, _32b), _32b, _64), _64,\n sum(\n scale(scale(4, ab, cdx, _8), _8, cdx, _16), _16,\n scale(scale(4, ab, cdy, _8), _8, cdy, _16b), _16b, _32), _32, fin);\n\n let det = estimate(finlen, fin);\n let errbound = iccerrboundB * permanent;\n if (det >= errbound || -det >= errbound) {\n return det;\n }\n\n bvirt = ax - adx;\n adxtail = ax - (adx + bvirt) + (bvirt - dx);\n bvirt = ay - ady;\n adytail = ay - (ady + bvirt) + (bvirt - dy);\n bvirt = bx - bdx;\n bdxtail = bx - (bdx + bvirt) + (bvirt - dx);\n bvirt = by - bdy;\n bdytail = by - (bdy + bvirt) + (bvirt - dy);\n bvirt = cx - cdx;\n cdxtail = cx - (cdx + bvirt) + (bvirt - dx);\n bvirt = cy - cdy;\n cdytail = cy - (cdy + bvirt) + (bvirt - dy);\n if (adxtail === 0 && bdxtail === 0 && cdxtail === 0 && adytail === 0 && bdytail === 0 && cdytail === 0) {\n return det;\n }\n\n errbound = iccerrboundC * permanent + resulterrbound * Math.abs(det);\n det += ((adx * adx + ady * ady) * ((bdx * cdytail + cdy * bdxtail) - (bdy * cdxtail + cdx * bdytail)) +\n 2 * (adx * adxtail + ady * adytail) * (bdx * cdy - bdy * cdx)) +\n ((bdx * bdx + bdy * bdy) * ((cdx * adytail + ady * cdxtail) - (cdy * adxtail + adx * cdytail)) +\n 2 * (bdx * bdxtail + bdy * bdytail) * (cdx * ady - cdy * adx)) +\n ((cdx * cdx + cdy * cdy) * ((adx * bdytail + bdy * adxtail) - (ady * bdxtail + bdx * adytail)) +\n 2 * (cdx * cdxtail + cdy * cdytail) * (adx * bdy - ady * bdx));\n\n if (det >= errbound || -det >= errbound) {\n return det;\n }\n\n if (bdxtail !== 0 || bdytail !== 0 || cdxtail !== 0 || cdytail !== 0) {\n s1 = adx * adx;\n c = splitter * adx;\n ahi = c - (c - adx);\n alo = adx - ahi;\n s0 = alo * alo - (s1 - ahi * ahi - (ahi + ahi) * alo);\n t1 = ady * ady;\n c = splitter * ady;\n ahi = c - (c - ady);\n alo = ady - ahi;\n t0 = alo * alo - (t1 - ahi * ahi - (ahi + ahi) * alo);\n _i = s0 + t0;\n bvirt = _i - s0;\n aa[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n aa[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n aa[2] = _j - (u3 - bvirt) + (_i - bvirt);\n aa[3] = u3;\n }\n if (cdxtail !== 0 || cdytail !== 0 || adxtail !== 0 || adytail !== 0) {\n s1 = bdx * bdx;\n c = splitter * bdx;\n ahi = c - (c - bdx);\n alo = bdx - ahi;\n s0 = alo * alo - (s1 - ahi * ahi - (ahi + ahi) * alo);\n t1 = bdy * bdy;\n c = splitter * bdy;\n ahi = c - (c - bdy);\n alo = bdy - ahi;\n t0 = alo * alo - (t1 - ahi * ahi - (ahi + ahi) * alo);\n _i = s0 + t0;\n bvirt = _i - s0;\n bb[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n bb[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n bb[2] = _j - (u3 - bvirt) + (_i - bvirt);\n bb[3] = u3;\n }\n if (adxtail !== 0 || adytail !== 0 || bdxtail !== 0 || bdytail !== 0) {\n s1 = cdx * cdx;\n c = splitter * cdx;\n ahi = c - (c - cdx);\n alo = cdx - ahi;\n s0 = alo * alo - (s1 - ahi * ahi - (ahi + ahi) * alo);\n t1 = cdy * cdy;\n c = splitter * cdy;\n ahi = c - (c - cdy);\n alo = cdy - ahi;\n t0 = alo * alo - (t1 - ahi * ahi - (ahi + ahi) * alo);\n _i = s0 + t0;\n bvirt = _i - s0;\n cc[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n cc[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n cc[2] = _j - (u3 - bvirt) + (_i - bvirt);\n cc[3] = u3;\n }\n\n if (adxtail !== 0) {\n axtbclen = scale(4, bc, adxtail, axtbc);\n finlen = finadd(finlen, sum_three(\n scale(axtbclen, axtbc, 2 * adx, _16), _16,\n scale(scale(4, cc, adxtail, _8), _8, bdy, _16b), _16b,\n scale(scale(4, bb, adxtail, _8), _8, -cdy, _16c), _16c, _32, _48), _48);\n }\n if (adytail !== 0) {\n aytbclen = scale(4, bc, adytail, aytbc);\n finlen = finadd(finlen, sum_three(\n scale(aytbclen, aytbc, 2 * ady, _16), _16,\n scale(scale(4, bb, adytail, _8), _8, cdx, _16b), _16b,\n scale(scale(4, cc, adytail, _8), _8, -bdx, _16c), _16c, _32, _48), _48);\n }\n if (bdxtail !== 0) {\n bxtcalen = scale(4, ca, bdxtail, bxtca);\n finlen = finadd(finlen, sum_three(\n scale(bxtcalen, bxtca, 2 * bdx, _16), _16,\n scale(scale(4, aa, bdxtail, _8), _8, cdy, _16b), _16b,\n scale(scale(4, cc, bdxtail, _8), _8, -ady, _16c), _16c, _32, _48), _48);\n }\n if (bdytail !== 0) {\n bytcalen = scale(4, ca, bdytail, bytca);\n finlen = finadd(finlen, sum_three(\n scale(bytcalen, bytca, 2 * bdy, _16), _16,\n scale(scale(4, cc, bdytail, _8), _8, adx, _16b), _16b,\n scale(scale(4, aa, bdytail, _8), _8, -cdx, _16c), _16c, _32, _48), _48);\n }\n if (cdxtail !== 0) {\n cxtablen = scale(4, ab, cdxtail, cxtab);\n finlen = finadd(finlen, sum_three(\n scale(cxtablen, cxtab, 2 * cdx, _16), _16,\n scale(scale(4, bb, cdxtail, _8), _8, ady, _16b), _16b,\n scale(scale(4, aa, cdxtail, _8), _8, -bdy, _16c), _16c, _32, _48), _48);\n }\n if (cdytail !== 0) {\n cytablen = scale(4, ab, cdytail, cytab);\n finlen = finadd(finlen, sum_three(\n scale(cytablen, cytab, 2 * cdy, _16), _16,\n scale(scale(4, aa, cdytail, _8), _8, bdx, _16b), _16b,\n scale(scale(4, bb, cdytail, _8), _8, -adx, _16c), _16c, _32, _48), _48);\n }\n\n if (adxtail !== 0 || adytail !== 0) {\n if (bdxtail !== 0 || bdytail !== 0 || cdxtail !== 0 || cdytail !== 0) {\n s1 = bdxtail * cdy;\n c = splitter * bdxtail;\n ahi = c - (c - bdxtail);\n alo = bdxtail - ahi;\n c = splitter * cdy;\n bhi = c - (c - cdy);\n blo = cdy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bdx * cdytail;\n c = splitter * bdx;\n ahi = c - (c - bdx);\n alo = bdx - ahi;\n c = splitter * cdytail;\n bhi = c - (c - cdytail);\n blo = cdytail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 + t0;\n bvirt = _i - s0;\n u[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n u[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n u[2] = _j - (u3 - bvirt) + (_i - bvirt);\n u[3] = u3;\n s1 = cdxtail * -bdy;\n c = splitter * cdxtail;\n ahi = c - (c - cdxtail);\n alo = cdxtail - ahi;\n c = splitter * -bdy;\n bhi = c - (c - -bdy);\n blo = -bdy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cdx * -bdytail;\n c = splitter * cdx;\n ahi = c - (c - cdx);\n alo = cdx - ahi;\n c = splitter * -bdytail;\n bhi = c - (c - -bdytail);\n blo = -bdytail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 + t0;\n bvirt = _i - s0;\n v[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n v[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n v[2] = _j - (u3 - bvirt) + (_i - bvirt);\n v[3] = u3;\n bctlen = sum(4, u, 4, v, bct);\n s1 = bdxtail * cdytail;\n c = splitter * bdxtail;\n ahi = c - (c - bdxtail);\n alo = bdxtail - ahi;\n c = splitter * cdytail;\n bhi = c - (c - cdytail);\n blo = cdytail - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cdxtail * bdytail;\n c = splitter * cdxtail;\n ahi = c - (c - cdxtail);\n alo = cdxtail - ahi;\n c = splitter * bdytail;\n bhi = c - (c - bdytail);\n blo = bdytail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n bctt[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n bctt[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n bctt[2] = _j - (u3 - bvirt) + (_i - bvirt);\n bctt[3] = u3;\n bcttlen = 4;\n } else {\n bct[0] = 0;\n bctlen = 1;\n bctt[0] = 0;\n bcttlen = 1;\n }\n if (adxtail !== 0) {\n const len = scale(bctlen, bct, adxtail, _16c);\n finlen = finadd(finlen, sum(\n scale(axtbclen, axtbc, adxtail, _16), _16,\n scale(len, _16c, 2 * adx, _32), _32, _48), _48);\n\n const len2 = scale(bcttlen, bctt, adxtail, _8);\n finlen = finadd(finlen, sum_three(\n scale(len2, _8, 2 * adx, _16), _16,\n scale(len2, _8, adxtail, _16b), _16b,\n scale(len, _16c, adxtail, _32), _32, _32b, _64), _64);\n\n if (bdytail !== 0) {\n finlen = finadd(finlen, scale(scale(4, cc, adxtail, _8), _8, bdytail, _16), _16);\n }\n if (cdytail !== 0) {\n finlen = finadd(finlen, scale(scale(4, bb, -adxtail, _8), _8, cdytail, _16), _16);\n }\n }\n if (adytail !== 0) {\n const len = scale(bctlen, bct, adytail, _16c);\n finlen = finadd(finlen, sum(\n scale(aytbclen, aytbc, adytail, _16), _16,\n scale(len, _16c, 2 * ady, _32), _32, _48), _48);\n\n const len2 = scale(bcttlen, bctt, adytail, _8);\n finlen = finadd(finlen, sum_three(\n scale(len2, _8, 2 * ady, _16), _16,\n scale(len2, _8, adytail, _16b), _16b,\n scale(len, _16c, adytail, _32), _32, _32b, _64), _64);\n }\n }\n if (bdxtail !== 0 || bdytail !== 0) {\n if (cdxtail !== 0 || cdytail !== 0 || adxtail !== 0 || adytail !== 0) {\n s1 = cdxtail * ady;\n c = splitter * cdxtail;\n ahi = c - (c - cdxtail);\n alo = cdxtail - ahi;\n c = splitter * ady;\n bhi = c - (c - ady);\n blo = ady - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cdx * adytail;\n c = splitter * cdx;\n ahi = c - (c - cdx);\n alo = cdx - ahi;\n c = splitter * adytail;\n bhi = c - (c - adytail);\n blo = adytail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 + t0;\n bvirt = _i - s0;\n u[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n u[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n u[2] = _j - (u3 - bvirt) + (_i - bvirt);\n u[3] = u3;\n n1 = -cdy;\n n0 = -cdytail;\n s1 = adxtail * n1;\n c = splitter * adxtail;\n ahi = c - (c - adxtail);\n alo = adxtail - ahi;\n c = splitter * n1;\n bhi = c - (c - n1);\n blo = n1 - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = adx * n0;\n c = splitter * adx;\n ahi = c - (c - adx);\n alo = adx - ahi;\n c = splitter * n0;\n bhi = c - (c - n0);\n blo = n0 - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 + t0;\n bvirt = _i - s0;\n v[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n v[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n v[2] = _j - (u3 - bvirt) + (_i - bvirt);\n v[3] = u3;\n catlen = sum(4, u, 4, v, cat);\n s1 = cdxtail * adytail;\n c = splitter * cdxtail;\n ahi = c - (c - cdxtail);\n alo = cdxtail - ahi;\n c = splitter * adytail;\n bhi = c - (c - adytail);\n blo = adytail - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = adxtail * cdytail;\n c = splitter * adxtail;\n ahi = c - (c - adxtail);\n alo = adxtail - ahi;\n c = splitter * cdytail;\n bhi = c - (c - cdytail);\n blo = cdytail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n catt[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n catt[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n catt[2] = _j - (u3 - bvirt) + (_i - bvirt);\n catt[3] = u3;\n cattlen = 4;\n } else {\n cat[0] = 0;\n catlen = 1;\n catt[0] = 0;\n cattlen = 1;\n }\n if (bdxtail !== 0) {\n const len = scale(catlen, cat, bdxtail, _16c);\n finlen = finadd(finlen, sum(\n scale(bxtcalen, bxtca, bdxtail, _16), _16,\n scale(len, _16c, 2 * bdx, _32), _32, _48), _48);\n\n const len2 = scale(cattlen, catt, bdxtail, _8);\n finlen = finadd(finlen, sum_three(\n scale(len2, _8, 2 * bdx, _16), _16,\n scale(len2, _8, bdxtail, _16b), _16b,\n scale(len, _16c, bdxtail, _32), _32, _32b, _64), _64);\n\n if (cdytail !== 0) {\n finlen = finadd(finlen, scale(scale(4, aa, bdxtail, _8), _8, cdytail, _16), _16);\n }\n if (adytail !== 0) {\n finlen = finadd(finlen, scale(scale(4, cc, -bdxtail, _8), _8, adytail, _16), _16);\n }\n }\n if (bdytail !== 0) {\n const len = scale(catlen, cat, bdytail, _16c);\n finlen = finadd(finlen, sum(\n scale(bytcalen, bytca, bdytail, _16), _16,\n scale(len, _16c, 2 * bdy, _32), _32, _48), _48);\n\n const len2 = scale(cattlen, catt, bdytail, _8);\n finlen = finadd(finlen, sum_three(\n scale(len2, _8, 2 * bdy, _16), _16,\n scale(len2, _8, bdytail, _16b), _16b,\n scale(len, _16c, bdytail, _32), _32, _32b, _64), _64);\n }\n }\n if (cdxtail !== 0 || cdytail !== 0) {\n if (adxtail !== 0 || adytail !== 0 || bdxtail !== 0 || bdytail !== 0) {\n s1 = adxtail * bdy;\n c = splitter * adxtail;\n ahi = c - (c - adxtail);\n alo = adxtail - ahi;\n c = splitter * bdy;\n bhi = c - (c - bdy);\n blo = bdy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = adx * bdytail;\n c = splitter * adx;\n ahi = c - (c - adx);\n alo = adx - ahi;\n c = splitter * bdytail;\n bhi = c - (c - bdytail);\n blo = bdytail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 + t0;\n bvirt = _i - s0;\n u[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n u[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n u[2] = _j - (u3 - bvirt) + (_i - bvirt);\n u[3] = u3;\n n1 = -ady;\n n0 = -adytail;\n s1 = bdxtail * n1;\n c = splitter * bdxtail;\n ahi = c - (c - bdxtail);\n alo = bdxtail - ahi;\n c = splitter * n1;\n bhi = c - (c - n1);\n blo = n1 - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bdx * n0;\n c = splitter * bdx;\n ahi = c - (c - bdx);\n alo = bdx - ahi;\n c = splitter * n0;\n bhi = c - (c - n0);\n blo = n0 - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 + t0;\n bvirt = _i - s0;\n v[0] = s0 - (_i - bvirt) + (t0 - bvirt);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 + t1;\n bvirt = _i - _0;\n v[1] = _0 - (_i - bvirt) + (t1 - bvirt);\n u3 = _j + _i;\n bvirt = u3 - _j;\n v[2] = _j - (u3 - bvirt) + (_i - bvirt);\n v[3] = u3;\n abtlen = sum(4, u, 4, v, abt);\n s1 = adxtail * bdytail;\n c = splitter * adxtail;\n ahi = c - (c - adxtail);\n alo = adxtail - ahi;\n c = splitter * bdytail;\n bhi = c - (c - bdytail);\n blo = bdytail - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bdxtail * adytail;\n c = splitter * bdxtail;\n ahi = c - (c - bdxtail);\n alo = bdxtail - ahi;\n c = splitter * adytail;\n bhi = c - (c - adytail);\n blo = adytail - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n abtt[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n abtt[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n abtt[2] = _j - (u3 - bvirt) + (_i - bvirt);\n abtt[3] = u3;\n abttlen = 4;\n } else {\n abt[0] = 0;\n abtlen = 1;\n abtt[0] = 0;\n abttlen = 1;\n }\n if (cdxtail !== 0) {\n const len = scale(abtlen, abt, cdxtail, _16c);\n finlen = finadd(finlen, sum(\n scale(cxtablen, cxtab, cdxtail, _16), _16,\n scale(len, _16c, 2 * cdx, _32), _32, _48), _48);\n\n const len2 = scale(abttlen, abtt, cdxtail, _8);\n finlen = finadd(finlen, sum_three(\n scale(len2, _8, 2 * cdx, _16), _16,\n scale(len2, _8, cdxtail, _16b), _16b,\n scale(len, _16c, cdxtail, _32), _32, _32b, _64), _64);\n\n if (adytail !== 0) {\n finlen = finadd(finlen, scale(scale(4, bb, cdxtail, _8), _8, adytail, _16), _16);\n }\n if (bdytail !== 0) {\n finlen = finadd(finlen, scale(scale(4, aa, -cdxtail, _8), _8, bdytail, _16), _16);\n }\n }\n if (cdytail !== 0) {\n const len = scale(abtlen, abt, cdytail, _16c);\n finlen = finadd(finlen, sum(\n scale(cytablen, cytab, cdytail, _16), _16,\n scale(len, _16c, 2 * cdy, _32), _32, _48), _48);\n\n const len2 = scale(abttlen, abtt, cdytail, _8);\n finlen = finadd(finlen, sum_three(\n scale(len2, _8, 2 * cdy, _16), _16,\n scale(len2, _8, cdytail, _16b), _16b,\n scale(len, _16c, cdytail, _32), _32, _32b, _64), _64);\n }\n }\n\n return fin[finlen - 1];\n}\n\nexport function incircle(ax, ay, bx, by, cx, cy, dx, dy) {\n const adx = ax - dx;\n const bdx = bx - dx;\n const cdx = cx - dx;\n const ady = ay - dy;\n const bdy = by - dy;\n const cdy = cy - dy;\n\n const bdxcdy = bdx * cdy;\n const cdxbdy = cdx * bdy;\n const alift = adx * adx + ady * ady;\n\n const cdxady = cdx * ady;\n const adxcdy = adx * cdy;\n const blift = bdx * bdx + bdy * bdy;\n\n const adxbdy = adx * bdy;\n const bdxady = bdx * ady;\n const clift = cdx * cdx + cdy * cdy;\n\n const det =\n alift * (bdxcdy - cdxbdy) +\n blift * (cdxady - adxcdy) +\n clift * (adxbdy - bdxady);\n\n const permanent =\n (Math.abs(bdxcdy) + Math.abs(cdxbdy)) * alift +\n (Math.abs(cdxady) + Math.abs(adxcdy)) * blift +\n (Math.abs(adxbdy) + Math.abs(bdxady)) * clift;\n\n const errbound = iccerrboundA * permanent;\n\n if (det > errbound || -det > errbound) {\n return det;\n }\n return incircleadapt(ax, ay, bx, by, cx, cy, dx, dy, permanent);\n}\n\nexport function incirclefast(ax, ay, bx, by, cx, cy, dx, dy) {\n const adx = ax - dx;\n const ady = ay - dy;\n const bdx = bx - dx;\n const bdy = by - dy;\n const cdx = cx - dx;\n const cdy = cy - dy;\n\n const abdet = adx * bdy - bdx * ady;\n const bcdet = bdx * cdy - cdx * bdy;\n const cadet = cdx * ady - adx * cdy;\n const alift = adx * adx + ady * ady;\n const blift = bdx * bdx + bdy * bdy;\n const clift = cdx * cdx + cdy * cdy;\n\n return alift * bcdet + blift * cadet + clift * abdet;\n}\n","import {epsilon, splitter, resulterrbound, estimate, vec, sum, sum_three, scale, negate} from './util.js';\n\nconst isperrboundA = (16 + 224 * epsilon) * epsilon;\nconst isperrboundB = (5 + 72 * epsilon) * epsilon;\nconst isperrboundC = (71 + 1408 * epsilon) * epsilon * epsilon;\n\nconst ab = vec(4);\nconst bc = vec(4);\nconst cd = vec(4);\nconst de = vec(4);\nconst ea = vec(4);\nconst ac = vec(4);\nconst bd = vec(4);\nconst ce = vec(4);\nconst da = vec(4);\nconst eb = vec(4);\n\nconst abc = vec(24);\nconst bcd = vec(24);\nconst cde = vec(24);\nconst dea = vec(24);\nconst eab = vec(24);\nconst abd = vec(24);\nconst bce = vec(24);\nconst cda = vec(24);\nconst deb = vec(24);\nconst eac = vec(24);\n\nconst adet = vec(1152);\nconst bdet = vec(1152);\nconst cdet = vec(1152);\nconst ddet = vec(1152);\nconst edet = vec(1152);\nconst abdet = vec(2304);\nconst cddet = vec(2304);\nconst cdedet = vec(3456);\nconst deter = vec(5760);\n\nconst _8 = vec(8);\nconst _8b = vec(8);\nconst _8c = vec(8);\nconst _16 = vec(16);\nconst _24 = vec(24);\nconst _48 = vec(48);\nconst _48b = vec(48);\nconst _96 = vec(96);\nconst _192 = vec(192);\nconst _384x = vec(384);\nconst _384y = vec(384);\nconst _384z = vec(384);\nconst _768 = vec(768);\n\nfunction sum_three_scale(a, b, c, az, bz, cz, out) {\n return sum_three(\n scale(4, a, az, _8), _8,\n scale(4, b, bz, _8b), _8b,\n scale(4, c, cz, _8c), _8c, _16, out);\n}\n\nfunction liftexact(alen, a, blen, b, clen, c, dlen, d, x, y, z, out) {\n const len = sum(\n sum(alen, a, blen, b, _48), _48,\n negate(sum(clen, c, dlen, d, _48b), _48b), _48b, _96);\n\n return sum_three(\n scale(scale(len, _96, x, _192), _192, x, _384x), _384x,\n scale(scale(len, _96, y, _192), _192, y, _384y), _384y,\n scale(scale(len, _96, z, _192), _192, z, _384z), _384z, _768, out);\n}\n\nfunction insphereexact(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz, ex, ey, ez) {\n let bvirt, c, ahi, alo, bhi, blo, _i, _j, _0, s1, s0, t1, t0, u3;\n\n s1 = ax * by;\n c = splitter * ax;\n ahi = c - (c - ax);\n alo = ax - ahi;\n c = splitter * by;\n bhi = c - (c - by);\n blo = by - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bx * ay;\n c = splitter * bx;\n ahi = c - (c - bx);\n alo = bx - ahi;\n c = splitter * ay;\n bhi = c - (c - ay);\n blo = ay - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ab[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ab[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ab[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ab[3] = u3;\n s1 = bx * cy;\n c = splitter * bx;\n ahi = c - (c - bx);\n alo = bx - ahi;\n c = splitter * cy;\n bhi = c - (c - cy);\n blo = cy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cx * by;\n c = splitter * cx;\n ahi = c - (c - cx);\n alo = cx - ahi;\n c = splitter * by;\n bhi = c - (c - by);\n blo = by - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n bc[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n bc[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n bc[2] = _j - (u3 - bvirt) + (_i - bvirt);\n bc[3] = u3;\n s1 = cx * dy;\n c = splitter * cx;\n ahi = c - (c - cx);\n alo = cx - ahi;\n c = splitter * dy;\n bhi = c - (c - dy);\n blo = dy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = dx * cy;\n c = splitter * dx;\n ahi = c - (c - dx);\n alo = dx - ahi;\n c = splitter * cy;\n bhi = c - (c - cy);\n blo = cy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n cd[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n cd[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n cd[2] = _j - (u3 - bvirt) + (_i - bvirt);\n cd[3] = u3;\n s1 = dx * ey;\n c = splitter * dx;\n ahi = c - (c - dx);\n alo = dx - ahi;\n c = splitter * ey;\n bhi = c - (c - ey);\n blo = ey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = ex * dy;\n c = splitter * ex;\n ahi = c - (c - ex);\n alo = ex - ahi;\n c = splitter * dy;\n bhi = c - (c - dy);\n blo = dy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n de[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n de[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n de[2] = _j - (u3 - bvirt) + (_i - bvirt);\n de[3] = u3;\n s1 = ex * ay;\n c = splitter * ex;\n ahi = c - (c - ex);\n alo = ex - ahi;\n c = splitter * ay;\n bhi = c - (c - ay);\n blo = ay - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = ax * ey;\n c = splitter * ax;\n ahi = c - (c - ax);\n alo = ax - ahi;\n c = splitter * ey;\n bhi = c - (c - ey);\n blo = ey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ea[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ea[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ea[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ea[3] = u3;\n s1 = ax * cy;\n c = splitter * ax;\n ahi = c - (c - ax);\n alo = ax - ahi;\n c = splitter * cy;\n bhi = c - (c - cy);\n blo = cy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cx * ay;\n c = splitter * cx;\n ahi = c - (c - cx);\n alo = cx - ahi;\n c = splitter * ay;\n bhi = c - (c - ay);\n blo = ay - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ac[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ac[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ac[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ac[3] = u3;\n s1 = bx * dy;\n c = splitter * bx;\n ahi = c - (c - bx);\n alo = bx - ahi;\n c = splitter * dy;\n bhi = c - (c - dy);\n blo = dy - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = dx * by;\n c = splitter * dx;\n ahi = c - (c - dx);\n alo = dx - ahi;\n c = splitter * by;\n bhi = c - (c - by);\n blo = by - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n bd[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n bd[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n bd[2] = _j - (u3 - bvirt) + (_i - bvirt);\n bd[3] = u3;\n s1 = cx * ey;\n c = splitter * cx;\n ahi = c - (c - cx);\n alo = cx - ahi;\n c = splitter * ey;\n bhi = c - (c - ey);\n blo = ey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = ex * cy;\n c = splitter * ex;\n ahi = c - (c - ex);\n alo = ex - ahi;\n c = splitter * cy;\n bhi = c - (c - cy);\n blo = cy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ce[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ce[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n ce[2] = _j - (u3 - bvirt) + (_i - bvirt);\n ce[3] = u3;\n s1 = dx * ay;\n c = splitter * dx;\n ahi = c - (c - dx);\n alo = dx - ahi;\n c = splitter * ay;\n bhi = c - (c - ay);\n blo = ay - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = ax * dy;\n c = splitter * ax;\n ahi = c - (c - ax);\n alo = ax - ahi;\n c = splitter * dy;\n bhi = c - (c - dy);\n blo = dy - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n da[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n da[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n da[2] = _j - (u3 - bvirt) + (_i - bvirt);\n da[3] = u3;\n s1 = ex * by;\n c = splitter * ex;\n ahi = c - (c - ex);\n alo = ex - ahi;\n c = splitter * by;\n bhi = c - (c - by);\n blo = by - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bx * ey;\n c = splitter * bx;\n ahi = c - (c - bx);\n alo = bx - ahi;\n c = splitter * ey;\n bhi = c - (c - ey);\n blo = ey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n eb[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n eb[1] = _0 - (_i + bvirt) + (bvirt - t1);\n u3 = _j + _i;\n bvirt = u3 - _j;\n eb[2] = _j - (u3 - bvirt) + (_i - bvirt);\n eb[3] = u3;\n\n const abclen = sum_three_scale(ab, bc, ac, cz, az, -bz, abc);\n const bcdlen = sum_three_scale(bc, cd, bd, dz, bz, -cz, bcd);\n const cdelen = sum_three_scale(cd, de, ce, ez, cz, -dz, cde);\n const dealen = sum_three_scale(de, ea, da, az, dz, -ez, dea);\n const eablen = sum_three_scale(ea, ab, eb, bz, ez, -az, eab);\n const abdlen = sum_three_scale(ab, bd, da, dz, az, bz, abd);\n const bcelen = sum_three_scale(bc, ce, eb, ez, bz, cz, bce);\n const cdalen = sum_three_scale(cd, da, ac, az, cz, dz, cda);\n const deblen = sum_three_scale(de, eb, bd, bz, dz, ez, deb);\n const eaclen = sum_three_scale(ea, ac, ce, cz, ez, az, eac);\n\n const deterlen = sum_three(\n liftexact(cdelen, cde, bcelen, bce, deblen, deb, bcdlen, bcd, ax, ay, az, adet), adet,\n liftexact(dealen, dea, cdalen, cda, eaclen, eac, cdelen, cde, bx, by, bz, bdet), bdet,\n sum_three(\n liftexact(eablen, eab, deblen, deb, abdlen, abd, dealen, dea, cx, cy, cz, cdet), cdet,\n liftexact(abclen, abc, eaclen, eac, bcelen, bce, eablen, eab, dx, dy, dz, ddet), ddet,\n liftexact(bcdlen, bcd, abdlen, abd, cdalen, cda, abclen, abc, ex, ey, ez, edet), edet, cddet, cdedet), cdedet, abdet, deter);\n\n return deter[deterlen - 1];\n}\n\nconst xdet = vec(96);\nconst ydet = vec(96);\nconst zdet = vec(96);\nconst fin = vec(1152);\n\nfunction liftadapt(a, b, c, az, bz, cz, x, y, z, out) {\n const len = sum_three_scale(a, b, c, az, bz, cz, _24);\n return sum_three(\n scale(scale(len, _24, x, _48), _48, x, xdet), xdet,\n scale(scale(len, _24, y, _48), _48, y, ydet), ydet,\n scale(scale(len, _24, z, _48), _48, z, zdet), zdet, _192, out);\n}\n\nfunction insphereadapt(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz, ex, ey, ez, permanent) {\n let ab3, bc3, cd3, da3, ac3, bd3;\n\n let aextail, bextail, cextail, dextail;\n let aeytail, beytail, ceytail, deytail;\n let aeztail, beztail, ceztail, deztail;\n\n let bvirt, c, ahi, alo, bhi, blo, _i, _j, _0, s1, s0, t1, t0;\n\n const aex = ax - ex;\n const bex = bx - ex;\n const cex = cx - ex;\n const dex = dx - ex;\n const aey = ay - ey;\n const bey = by - ey;\n const cey = cy - ey;\n const dey = dy - ey;\n const aez = az - ez;\n const bez = bz - ez;\n const cez = cz - ez;\n const dez = dz - ez;\n\n s1 = aex * bey;\n c = splitter * aex;\n ahi = c - (c - aex);\n alo = aex - ahi;\n c = splitter * bey;\n bhi = c - (c - bey);\n blo = bey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = bex * aey;\n c = splitter * bex;\n ahi = c - (c - bex);\n alo = bex - ahi;\n c = splitter * aey;\n bhi = c - (c - aey);\n blo = aey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ab[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ab[1] = _0 - (_i + bvirt) + (bvirt - t1);\n ab3 = _j + _i;\n bvirt = ab3 - _j;\n ab[2] = _j - (ab3 - bvirt) + (_i - bvirt);\n ab[3] = ab3;\n s1 = bex * cey;\n c = splitter * bex;\n ahi = c - (c - bex);\n alo = bex - ahi;\n c = splitter * cey;\n bhi = c - (c - cey);\n blo = cey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cex * bey;\n c = splitter * cex;\n ahi = c - (c - cex);\n alo = cex - ahi;\n c = splitter * bey;\n bhi = c - (c - bey);\n blo = bey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n bc[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n bc[1] = _0 - (_i + bvirt) + (bvirt - t1);\n bc3 = _j + _i;\n bvirt = bc3 - _j;\n bc[2] = _j - (bc3 - bvirt) + (_i - bvirt);\n bc[3] = bc3;\n s1 = cex * dey;\n c = splitter * cex;\n ahi = c - (c - cex);\n alo = cex - ahi;\n c = splitter * dey;\n bhi = c - (c - dey);\n blo = dey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = dex * cey;\n c = splitter * dex;\n ahi = c - (c - dex);\n alo = dex - ahi;\n c = splitter * cey;\n bhi = c - (c - cey);\n blo = cey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n cd[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n cd[1] = _0 - (_i + bvirt) + (bvirt - t1);\n cd3 = _j + _i;\n bvirt = cd3 - _j;\n cd[2] = _j - (cd3 - bvirt) + (_i - bvirt);\n cd[3] = cd3;\n s1 = dex * aey;\n c = splitter * dex;\n ahi = c - (c - dex);\n alo = dex - ahi;\n c = splitter * aey;\n bhi = c - (c - aey);\n blo = aey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = aex * dey;\n c = splitter * aex;\n ahi = c - (c - aex);\n alo = aex - ahi;\n c = splitter * dey;\n bhi = c - (c - dey);\n blo = dey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n da[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n da[1] = _0 - (_i + bvirt) + (bvirt - t1);\n da3 = _j + _i;\n bvirt = da3 - _j;\n da[2] = _j - (da3 - bvirt) + (_i - bvirt);\n da[3] = da3;\n s1 = aex * cey;\n c = splitter * aex;\n ahi = c - (c - aex);\n alo = aex - ahi;\n c = splitter * cey;\n bhi = c - (c - cey);\n blo = cey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = cex * aey;\n c = splitter * cex;\n ahi = c - (c - cex);\n alo = cex - ahi;\n c = splitter * aey;\n bhi = c - (c - aey);\n blo = aey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n ac[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n ac[1] = _0 - (_i + bvirt) + (bvirt - t1);\n ac3 = _j + _i;\n bvirt = ac3 - _j;\n ac[2] = _j - (ac3 - bvirt) + (_i - bvirt);\n ac[3] = ac3;\n s1 = bex * dey;\n c = splitter * bex;\n ahi = c - (c - bex);\n alo = bex - ahi;\n c = splitter * dey;\n bhi = c - (c - dey);\n blo = dey - bhi;\n s0 = alo * blo - (s1 - ahi * bhi - alo * bhi - ahi * blo);\n t1 = dex * bey;\n c = splitter * dex;\n ahi = c - (c - dex);\n alo = dex - ahi;\n c = splitter * bey;\n bhi = c - (c - bey);\n blo = bey - bhi;\n t0 = alo * blo - (t1 - ahi * bhi - alo * bhi - ahi * blo);\n _i = s0 - t0;\n bvirt = s0 - _i;\n bd[0] = s0 - (_i + bvirt) + (bvirt - t0);\n _j = s1 + _i;\n bvirt = _j - s1;\n _0 = s1 - (_j - bvirt) + (_i - bvirt);\n _i = _0 - t1;\n bvirt = _0 - _i;\n bd[1] = _0 - (_i + bvirt) + (bvirt - t1);\n bd3 = _j + _i;\n bvirt = bd3 - _j;\n bd[2] = _j - (bd3 - bvirt) + (_i - bvirt);\n bd[3] = bd3;\n\n const finlen = sum(\n sum(\n negate(liftadapt(bc, cd, bd, dez, bez, -cez, aex, aey, aez, adet), adet), adet,\n liftadapt(cd, da, ac, aez, cez, dez, bex, bey, bez, bdet), bdet, abdet), abdet,\n sum(\n negate(liftadapt(da, ab, bd, bez, dez, aez, cex, cey, cez, cdet), cdet), cdet,\n liftadapt(ab, bc, ac, cez, aez, -bez, dex, dey, dez, ddet), ddet, cddet), cddet, fin);\n\n let det = estimate(finlen, fin);\n let errbound = isperrboundB * permanent;\n if (det >= errbound || -det >= errbound) {\n return det;\n }\n\n bvirt = ax - aex;\n aextail = ax - (aex + bvirt) + (bvirt - ex);\n bvirt = ay - aey;\n aeytail = ay - (aey + bvirt) + (bvirt - ey);\n bvirt = az - aez;\n aeztail = az - (aez + bvirt) + (bvirt - ez);\n bvirt = bx - bex;\n bextail = bx - (bex + bvirt) + (bvirt - ex);\n bvirt = by - bey;\n beytail = by - (bey + bvirt) + (bvirt - ey);\n bvirt = bz - bez;\n beztail = bz - (bez + bvirt) + (bvirt - ez);\n bvirt = cx - cex;\n cextail = cx - (cex + bvirt) + (bvirt - ex);\n bvirt = cy - cey;\n ceytail = cy - (cey + bvirt) + (bvirt - ey);\n bvirt = cz - cez;\n ceztail = cz - (cez + bvirt) + (bvirt - ez);\n bvirt = dx - dex;\n dextail = dx - (dex + bvirt) + (bvirt - ex);\n bvirt = dy - dey;\n deytail = dy - (dey + bvirt) + (bvirt - ey);\n bvirt = dz - dez;\n deztail = dz - (dez + bvirt) + (bvirt - ez);\n if (aextail === 0 && aeytail === 0 && aeztail === 0 &&\n bextail === 0 && beytail === 0 && beztail === 0 &&\n cextail === 0 && ceytail === 0 && ceztail === 0 &&\n dextail === 0 && deytail === 0 && deztail === 0) {\n return det;\n }\n\n errbound = isperrboundC * permanent + resulterrbound * Math.abs(det);\n\n const abeps = (aex * beytail + bey * aextail) - (aey * bextail + bex * aeytail);\n const bceps = (bex * ceytail + cey * bextail) - (bey * cextail + cex * beytail);\n const cdeps = (cex * deytail + dey * cextail) - (cey * dextail + dex * ceytail);\n const daeps = (dex * aeytail + aey * dextail) - (dey * aextail + aex * deytail);\n const aceps = (aex * ceytail + cey * aextail) - (aey * cextail + cex * aeytail);\n const bdeps = (bex * deytail + dey * bextail) - (bey * dextail + dex * beytail);\n det +=\n (((bex * bex + bey * bey + bez * bez) * ((cez * daeps + dez * aceps + aez * cdeps) +\n (ceztail * da3 + deztail * ac3 + aeztail * cd3)) + (dex * dex + dey * dey + dez * dez) *\n ((aez * bceps - bez * aceps + cez * abeps) + (aeztail * bc3 - beztail * ac3 + ceztail * ab3))) -\n ((aex * aex + aey * aey + aez * aez) * ((bez * cdeps - cez * bdeps + dez * bceps) +\n (beztail * cd3 - ceztail * bd3 + deztail * bc3)) + (cex * cex + cey * cey + cez * cez) *\n ((dez * abeps + aez * bdeps + bez * daeps) + (deztail * ab3 + aeztail * bd3 + beztail * da3)))) +\n 2 * (((bex * bextail + bey * beytail + bez * beztail) * (cez * da3 + dez * ac3 + aez * cd3) +\n (dex * dextail + dey * deytail + dez * deztail) * (aez * bc3 - bez * ac3 + cez * ab3)) -\n ((aex * aextail + aey * aeytail + aez * aeztail) * (bez * cd3 - cez * bd3 + dez * bc3) +\n (cex * cextail + cey * ceytail + cez * ceztail) * (dez * ab3 + aez * bd3 + bez * da3)));\n\n if (det >= errbound || -det >= errbound) {\n return det;\n }\n\n return insphereexact(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz, ex, ey, ez);\n}\n\nexport function insphere(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz, ex, ey, ez) {\n const aex = ax - ex;\n const bex = bx - ex;\n const cex = cx - ex;\n const dex = dx - ex;\n const aey = ay - ey;\n const bey = by - ey;\n const cey = cy - ey;\n const dey = dy - ey;\n const aez = az - ez;\n const bez = bz - ez;\n const cez = cz - ez;\n const dez = dz - ez;\n\n const aexbey = aex * bey;\n const bexaey = bex * aey;\n const ab = aexbey - bexaey;\n const bexcey = bex * cey;\n const cexbey = cex * bey;\n const bc = bexcey - cexbey;\n const cexdey = cex * dey;\n const dexcey = dex * cey;\n const cd = cexdey - dexcey;\n const dexaey = dex * aey;\n const aexdey = aex * dey;\n const da = dexaey - aexdey;\n const aexcey = aex * cey;\n const cexaey = cex * aey;\n const ac = aexcey - cexaey;\n const bexdey = bex * dey;\n const dexbey = dex * bey;\n const bd = bexdey - dexbey;\n\n const alift = aex * aex + aey * aey + aez * aez;\n const blift = bex * bex + bey * bey + bez * bez;\n const clift = cex * cex + cey * cey + cez * cez;\n const dlift = dex * dex + dey * dey + dez * dez;\n\n const det =\n (clift * (dez * ab + aez * bd + bez * da) - dlift * (aez * bc - bez * ac + cez * ab)) +\n (alift * (bez * cd - cez * bd + dez * bc) - blift * (cez * da + dez * ac + aez * cd));\n\n const aezplus = Math.abs(aez);\n const bezplus = Math.abs(bez);\n const cezplus = Math.abs(cez);\n const dezplus = Math.abs(dez);\n const aexbeyplus = Math.abs(aexbey) + Math.abs(bexaey);\n const bexceyplus = Math.abs(bexcey) + Math.abs(cexbey);\n const cexdeyplus = Math.abs(cexdey) + Math.abs(dexcey);\n const dexaeyplus = Math.abs(dexaey) + Math.abs(aexdey);\n const aexceyplus = Math.abs(aexcey) + Math.abs(cexaey);\n const bexdeyplus = Math.abs(bexdey) + Math.abs(dexbey);\n const permanent =\n (cexdeyplus * bezplus + bexdeyplus * cezplus + bexceyplus * dezplus) * alift +\n (dexaeyplus * cezplus + aexceyplus * dezplus + cexdeyplus * aezplus) * blift +\n (aexbeyplus * dezplus + bexdeyplus * aezplus + dexaeyplus * bezplus) * clift +\n (bexceyplus * aezplus + aexceyplus * bezplus + aexbeyplus * cezplus) * dlift;\n\n const errbound = isperrboundA * permanent;\n if (det > errbound || -det > errbound) {\n return det;\n }\n return -insphereadapt(ax, ay, az, bx, by, bz, cx, cy, cz, dx, dy, dz, ex, ey, ez, permanent);\n}\n\nexport function inspherefast(pax, pay, paz, pbx, pby, pbz, pcx, pcy, pcz, pdx, pdy, pdz, pex, pey, pez) {\n const aex = pax - pex;\n const bex = pbx - pex;\n const cex = pcx - pex;\n const dex = pdx - pex;\n const aey = pay - pey;\n const bey = pby - pey;\n const cey = pcy - pey;\n const dey = pdy - pey;\n const aez = paz - pez;\n const bez = pbz - pez;\n const cez = pcz - pez;\n const dez = pdz - pez;\n\n const ab = aex * bey - bex * aey;\n const bc = bex * cey - cex * bey;\n const cd = cex * dey - dex * cey;\n const da = dex * aey - aex * dey;\n const ac = aex * cey - cex * aey;\n const bd = bex * dey - dex * bey;\n\n const abc = aez * bc - bez * ac + cez * ab;\n const bcd = bez * cd - cez * bd + dez * bc;\n const cda = cez * da + dez * ac + aez * cd;\n const dab = dez * ab + aez * bd + bez * da;\n\n const alift = aex * aex + aey * aey + aez * aez;\n const blift = bex * bex + bey * bey + bez * bez;\n const clift = cex * cex + cey * cey + cez * cez;\n const dlift = dex * dex + dey * dey + dez * dez;\n\n return (clift * dab - dlift * abc) + (alift * bcd - blift * cda);\n}\n","import { orient2d } from 'robust-predicates';\n\nfunction pointInPolygon(p, polygon) {\n var i;\n var ii;\n var k = 0;\n var f;\n var u1;\n var v1;\n var u2;\n var v2;\n var currentP;\n var nextP;\n\n var x = p[0];\n var y = p[1];\n\n var numContours = polygon.length;\n for (i = 0; i < numContours; i++) {\n ii = 0;\n var contour = polygon[i];\n var contourLen = contour.length - 1;\n\n currentP = contour[0];\n if (currentP[0] !== contour[contourLen][0] &&\n currentP[1] !== contour[contourLen][1]) {\n throw new Error('First and last coordinates in a ring must be the same')\n }\n\n u1 = currentP[0] - x;\n v1 = currentP[1] - y;\n\n for (ii; ii < contourLen; ii++) {\n nextP = contour[ii + 1];\n\n u2 = nextP[0] - x;\n v2 = nextP[1] - y;\n\n if (v1 === 0 && v2 === 0) {\n if ((u2 <= 0 && u1 >= 0) || (u1 <= 0 && u2 >= 0)) { return 0 }\n } else if ((v2 >= 0 && v1 < 0) || (v2 < 0 && v1 >= 0)) {\n f = orient2d(u1, u2, v1, v2, 0, 0);\n if (f === 0) { return 0 }\n if ((f > 0 && v2 > 0 && v1 <= 0) || (f < 0 && v2 <= 0 && v1 > 0)) { k++; }\n }\n currentP = nextP;\n v1 = v2;\n u1 = u2;\n }\n }\n\n if (k % 2 === 0) { return false }\n return true\n}\n\nexport { pointInPolygon as default };\n","import {\n BBox,\n Feature,\n FeatureCollection,\n Geometry,\n GeometryCollection,\n GeometryObject,\n LineString,\n MultiLineString,\n MultiPoint,\n MultiPolygon,\n Point,\n Polygon,\n Position,\n GeoJsonProperties,\n} from \"geojson\";\n\nimport { Id } from \"./lib/geojson.js\";\nexport * from \"./lib/geojson.js\";\n\n// TurfJS Combined Types\nexport type Coord = Feature | Point | Position;\n\n// TurfJS String Types\nexport type Units =\n | \"meters\"\n | \"metres\"\n | \"millimeters\"\n | \"millimetres\"\n | \"centimeters\"\n | \"centimetres\"\n | \"kilometers\"\n | \"kilometres\"\n | \"miles\"\n | \"nauticalmiles\"\n | \"inches\"\n | \"yards\"\n | \"feet\"\n | \"radians\"\n | \"degrees\";\nexport type AreaUnits =\n | Exclude\n | \"acres\"\n | \"hectares\";\nexport type Grid = \"point\" | \"square\" | \"hex\" | \"triangle\";\nexport type Corners = \"sw\" | \"se\" | \"nw\" | \"ne\" | \"center\" | \"centroid\";\n\nexport type Lines = LineString | MultiLineString | Polygon | MultiPolygon;\nexport type AllGeoJSON =\n | Feature\n | FeatureCollection\n | Geometry\n | GeometryCollection;\n\n/**\n * @module helpers\n */\n\n/**\n * The Earth radius in kilometers. Used by Turf modules that model the Earth as a sphere. The {@link https://en.wikipedia.org/wiki/Earth_radius#Arithmetic_mean_radius mean radius} was selected because it is {@link https://rosettacode.org/wiki/Haversine_formula#:~:text=This%20value%20is%20recommended recommended } by the Haversine formula (used by turf/distance) to reduce error.\n * @memberof helpers\n * @type {number}\n */\nexport const earthRadius = 6371008.8;\n\n/**\n * Unit of measurement factors based on earthRadius.\n *\n * Keys are the name of the unit, values are the number of that unit in a single radian\n *\n * @memberof helpers\n * @type {Object}\n */\nexport const factors: Record = {\n centimeters: earthRadius * 100,\n centimetres: earthRadius * 100,\n degrees: 360 / (2 * Math.PI),\n feet: earthRadius * 3.28084,\n inches: earthRadius * 39.37,\n kilometers: earthRadius / 1000,\n kilometres: earthRadius / 1000,\n meters: earthRadius,\n metres: earthRadius,\n miles: earthRadius / 1609.344,\n millimeters: earthRadius * 1000,\n millimetres: earthRadius * 1000,\n nauticalmiles: earthRadius / 1852,\n radians: 1,\n yards: earthRadius * 1.0936,\n};\n\n/**\n\n * Area of measurement factors based on 1 square meter.\n *\n * @memberof helpers\n * @type {Object}\n */\nexport const areaFactors: Record = {\n acres: 0.000247105,\n centimeters: 10000,\n centimetres: 10000,\n feet: 10.763910417,\n hectares: 0.0001,\n inches: 1550.003100006,\n kilometers: 0.000001,\n kilometres: 0.000001,\n meters: 1,\n metres: 1,\n miles: 3.86e-7,\n nauticalmiles: 2.9155334959812285e-7,\n millimeters: 1000000,\n millimetres: 1000000,\n yards: 1.195990046,\n};\n\n/**\n * Wraps a GeoJSON {@link Geometry} in a GeoJSON {@link Feature}.\n *\n * @name feature\n * @param {Geometry} geometry input geometry\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} a GeoJSON Feature\n * @example\n * var geometry = {\n * \"type\": \"Point\",\n * \"coordinates\": [110, 50]\n * };\n *\n * var feature = turf.feature(geometry);\n *\n * //=feature\n */\nexport function feature<\n G extends GeometryObject = Geometry,\n P extends GeoJsonProperties = GeoJsonProperties,\n>(\n geom: G | null,\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n const feat: any = { type: \"Feature\" };\n if (options.id === 0 || options.id) {\n feat.id = options.id;\n }\n if (options.bbox) {\n feat.bbox = options.bbox;\n }\n feat.properties = properties || {};\n feat.geometry = geom;\n return feat;\n}\n\n/**\n * Creates a GeoJSON {@link Geometry} from a Geometry string type & coordinates.\n * For GeometryCollection type use `helpers.geometryCollection`\n *\n * @name geometry\n * @param {string} type Geometry Type\n * @param {Array} coordinates Coordinates\n * @param {Object} [options={}] Optional Parameters\n * @returns {Geometry} a GeoJSON Geometry\n * @example\n * var type = \"Point\";\n * var coordinates = [110, 50];\n * var geometry = turf.geometry(type, coordinates);\n * // => geometry\n */\nexport function geometry(\n type:\n | \"Point\"\n | \"LineString\"\n | \"Polygon\"\n | \"MultiPoint\"\n | \"MultiLineString\"\n | \"MultiPolygon\",\n coordinates: any[],\n _options: Record = {}\n) {\n switch (type) {\n case \"Point\":\n return point(coordinates).geometry;\n case \"LineString\":\n return lineString(coordinates).geometry;\n case \"Polygon\":\n return polygon(coordinates).geometry;\n case \"MultiPoint\":\n return multiPoint(coordinates).geometry;\n case \"MultiLineString\":\n return multiLineString(coordinates).geometry;\n case \"MultiPolygon\":\n return multiPolygon(coordinates).geometry;\n default:\n throw new Error(type + \" is invalid\");\n }\n}\n\n/**\n * Creates a {@link Point} {@link Feature} from a Position.\n *\n * @name point\n * @param {Array} coordinates longitude, latitude position (each in decimal degrees)\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} a Point feature\n * @example\n * var point = turf.point([-75.343, 39.984]);\n *\n * //=point\n */\nexport function point

(\n coordinates: Position,\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n if (!coordinates) {\n throw new Error(\"coordinates is required\");\n }\n if (!Array.isArray(coordinates)) {\n throw new Error(\"coordinates must be an Array\");\n }\n if (coordinates.length < 2) {\n throw new Error(\"coordinates must be at least 2 numbers long\");\n }\n if (!isNumber(coordinates[0]) || !isNumber(coordinates[1])) {\n throw new Error(\"coordinates must contain numbers\");\n }\n\n const geom: Point = {\n type: \"Point\",\n coordinates,\n };\n return feature(geom, properties, options);\n}\n\n/**\n * Creates a {@link Point} {@link FeatureCollection} from an Array of Point coordinates.\n *\n * @name points\n * @param {Array>} coordinates an array of Points\n * @param {Object} [properties={}] Translate these properties to each Feature\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north]\n * associated with the FeatureCollection\n * @param {string|number} [options.id] Identifier associated with the FeatureCollection\n * @returns {FeatureCollection} Point Feature\n * @example\n * var points = turf.points([\n * [-75, 39],\n * [-80, 45],\n * [-78, 50]\n * ]);\n *\n * //=points\n */\nexport function points

(\n coordinates: Position[],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): FeatureCollection {\n return featureCollection(\n coordinates.map((coords) => {\n return point(coords, properties);\n }),\n options\n );\n}\n\n/**\n * Creates a {@link Polygon} {@link Feature} from an Array of LinearRings.\n *\n * @name polygon\n * @param {Array>>} coordinates an array of LinearRings\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} Polygon Feature\n * @example\n * var polygon = turf.polygon([[[-5, 52], [-4, 56], [-2, 51], [-7, 54], [-5, 52]]], { name: 'poly1' });\n *\n * //=polygon\n */\nexport function polygon

(\n coordinates: Position[][],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n for (const ring of coordinates) {\n if (ring.length < 4) {\n throw new Error(\n \"Each LinearRing of a Polygon must have 4 or more Positions.\"\n );\n }\n\n if (ring[ring.length - 1].length !== ring[0].length) {\n throw new Error(\"First and last Position are not equivalent.\");\n }\n\n for (let j = 0; j < ring[ring.length - 1].length; j++) {\n // Check if first point of Polygon contains two numbers\n if (ring[ring.length - 1][j] !== ring[0][j]) {\n throw new Error(\"First and last Position are not equivalent.\");\n }\n }\n }\n const geom: Polygon = {\n type: \"Polygon\",\n coordinates,\n };\n return feature(geom, properties, options);\n}\n\n/**\n * Creates a {@link Polygon} {@link FeatureCollection} from an Array of Polygon coordinates.\n *\n * @name polygons\n * @param {Array>>>} coordinates an array of Polygon coordinates\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the FeatureCollection\n * @returns {FeatureCollection} Polygon FeatureCollection\n * @example\n * var polygons = turf.polygons([\n * [[[-5, 52], [-4, 56], [-2, 51], [-7, 54], [-5, 52]]],\n * [[[-15, 42], [-14, 46], [-12, 41], [-17, 44], [-15, 42]]],\n * ]);\n *\n * //=polygons\n */\nexport function polygons

(\n coordinates: Position[][][],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): FeatureCollection {\n return featureCollection(\n coordinates.map((coords) => {\n return polygon(coords, properties);\n }),\n options\n );\n}\n\n/**\n * Creates a {@link LineString} {@link Feature} from an Array of Positions.\n *\n * @name lineString\n * @param {Array>} coordinates an array of Positions\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} LineString Feature\n * @example\n * var linestring1 = turf.lineString([[-24, 63], [-23, 60], [-25, 65], [-20, 69]], {name: 'line 1'});\n * var linestring2 = turf.lineString([[-14, 43], [-13, 40], [-15, 45], [-10, 49]], {name: 'line 2'});\n *\n * //=linestring1\n * //=linestring2\n */\nexport function lineString

(\n coordinates: Position[],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n if (coordinates.length < 2) {\n throw new Error(\"coordinates must be an array of two or more positions\");\n }\n const geom: LineString = {\n type: \"LineString\",\n coordinates,\n };\n return feature(geom, properties, options);\n}\n\n/**\n * Creates a {@link LineString} {@link FeatureCollection} from an Array of LineString coordinates.\n *\n * @name lineStrings\n * @param {Array>>} coordinates an array of LinearRings\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north]\n * associated with the FeatureCollection\n * @param {string|number} [options.id] Identifier associated with the FeatureCollection\n * @returns {FeatureCollection} LineString FeatureCollection\n * @example\n * var linestrings = turf.lineStrings([\n * [[-24, 63], [-23, 60], [-25, 65], [-20, 69]],\n * [[-14, 43], [-13, 40], [-15, 45], [-10, 49]]\n * ]);\n *\n * //=linestrings\n */\nexport function lineStrings

(\n coordinates: Position[][],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): FeatureCollection {\n return featureCollection(\n coordinates.map((coords) => {\n return lineString(coords, properties);\n }),\n options\n );\n}\n\n/**\n * Takes one or more {@link Feature|Features} and creates a {@link FeatureCollection}.\n *\n * @name featureCollection\n * @param {Feature[]} features input features\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {FeatureCollection} FeatureCollection of Features\n * @example\n * var locationA = turf.point([-75.343, 39.984], {name: 'Location A'});\n * var locationB = turf.point([-75.833, 39.284], {name: 'Location B'});\n * var locationC = turf.point([-75.534, 39.123], {name: 'Location C'});\n *\n * var collection = turf.featureCollection([\n * locationA,\n * locationB,\n * locationC\n * ]);\n *\n * //=collection\n */\nexport function featureCollection<\n G extends GeometryObject = Geometry,\n P extends GeoJsonProperties = GeoJsonProperties,\n>(\n features: Array>,\n options: { bbox?: BBox; id?: Id } = {}\n): FeatureCollection {\n const fc: any = { type: \"FeatureCollection\" };\n if (options.id) {\n fc.id = options.id;\n }\n if (options.bbox) {\n fc.bbox = options.bbox;\n }\n fc.features = features;\n return fc;\n}\n\n/**\n * Creates a {@link Feature} based on a\n * coordinate array. Properties can be added optionally.\n *\n * @name multiLineString\n * @param {Array>>} coordinates an array of LineStrings\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} a MultiLineString feature\n * @throws {Error} if no coordinates are passed\n * @example\n * var multiLine = turf.multiLineString([[[0,0],[10,10]]]);\n *\n * //=multiLine\n */\nexport function multiLineString<\n P extends GeoJsonProperties = GeoJsonProperties,\n>(\n coordinates: Position[][],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n const geom: MultiLineString = {\n type: \"MultiLineString\",\n coordinates,\n };\n return feature(geom, properties, options);\n}\n\n/**\n * Creates a {@link Feature} based on a\n * coordinate array. Properties can be added optionally.\n *\n * @name multiPoint\n * @param {Array>} coordinates an array of Positions\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} a MultiPoint feature\n * @throws {Error} if no coordinates are passed\n * @example\n * var multiPt = turf.multiPoint([[0,0],[10,10]]);\n *\n * //=multiPt\n */\nexport function multiPoint

(\n coordinates: Position[],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n const geom: MultiPoint = {\n type: \"MultiPoint\",\n coordinates,\n };\n return feature(geom, properties, options);\n}\n\n/**\n * Creates a {@link Feature} based on a\n * coordinate array. Properties can be added optionally.\n *\n * @name multiPolygon\n * @param {Array>>>} coordinates an array of Polygons\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} a multipolygon feature\n * @throws {Error} if no coordinates are passed\n * @example\n * var multiPoly = turf.multiPolygon([[[[0,0],[0,10],[10,10],[10,0],[0,0]]]]);\n *\n * //=multiPoly\n *\n */\nexport function multiPolygon

(\n coordinates: Position[][][],\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n const geom: MultiPolygon = {\n type: \"MultiPolygon\",\n coordinates,\n };\n return feature(geom, properties, options);\n}\n\n/**\n * Creates a {@link Feature} based on a\n * coordinate array. Properties can be added optionally.\n *\n * @name geometryCollection\n * @param {Array} geometries an array of GeoJSON Geometries\n * @param {Object} [properties={}] an Object of key-value pairs to add as properties\n * @param {Object} [options={}] Optional Parameters\n * @param {Array} [options.bbox] Bounding Box Array [west, south, east, north] associated with the Feature\n * @param {string|number} [options.id] Identifier associated with the Feature\n * @returns {Feature} a GeoJSON GeometryCollection Feature\n * @example\n * var pt = turf.geometry(\"Point\", [100, 0]);\n * var line = turf.geometry(\"LineString\", [[101, 0], [102, 1]]);\n * var collection = turf.geometryCollection([pt, line]);\n *\n * // => collection\n */\nexport function geometryCollection<\n P extends GeoJsonProperties = GeoJsonProperties,\n>(\n geometries: Array<\n Point | LineString | Polygon | MultiPoint | MultiLineString | MultiPolygon\n >,\n properties?: P,\n options: { bbox?: BBox; id?: Id } = {}\n): Feature {\n const geom: GeometryCollection = {\n type: \"GeometryCollection\",\n geometries,\n };\n return feature(geom, properties, options);\n}\n\n/**\n * Round number to precision\n *\n * @param {number} num Number\n * @param {number} [precision=0] Precision\n * @returns {number} rounded number\n * @example\n * turf.round(120.4321)\n * //=120\n *\n * turf.round(120.4321, 2)\n * //=120.43\n */\nexport function round(num: number, precision = 0): number {\n if (precision && !(precision >= 0)) {\n throw new Error(\"precision must be a positive number\");\n }\n const multiplier = Math.pow(10, precision || 0);\n return Math.round(num * multiplier) / multiplier;\n}\n\n/**\n * Convert a distance measurement (assuming a spherical Earth) from radians to a more friendly unit.\n * Valid units: miles, nauticalmiles, inches, yards, meters, metres, kilometers, centimeters, feet\n *\n * @name radiansToLength\n * @param {number} radians in radians across the sphere\n * @param {string} [units=\"kilometers\"] can be degrees, radians, miles, inches, yards, metres,\n * meters, kilometres, kilometers.\n * @returns {number} distance\n */\nexport function radiansToLength(\n radians: number,\n units: Units = \"kilometers\"\n): number {\n const factor = factors[units];\n if (!factor) {\n throw new Error(units + \" units is invalid\");\n }\n return radians * factor;\n}\n\n/**\n * Convert a distance measurement (assuming a spherical Earth) from a real-world unit into radians\n * Valid units: miles, nauticalmiles, inches, yards, meters, metres, kilometers, centimeters, feet\n *\n * @name lengthToRadians\n * @param {number} distance in real units\n * @param {string} [units=\"kilometers\"] can be degrees, radians, miles, inches, yards, metres,\n * meters, kilometres, kilometers.\n * @returns {number} radians\n */\nexport function lengthToRadians(\n distance: number,\n units: Units = \"kilometers\"\n): number {\n const factor = factors[units];\n if (!factor) {\n throw new Error(units + \" units is invalid\");\n }\n return distance / factor;\n}\n\n/**\n * Convert a distance measurement (assuming a spherical Earth) from a real-world unit into degrees\n * Valid units: miles, nauticalmiles, inches, yards, meters, metres, centimeters, kilometres, feet\n *\n * @name lengthToDegrees\n * @param {number} distance in real units\n * @param {string} [units=\"kilometers\"] can be degrees, radians, miles, inches, yards, metres,\n * meters, kilometres, kilometers.\n * @returns {number} degrees\n */\nexport function lengthToDegrees(distance: number, units?: Units): number {\n return radiansToDegrees(lengthToRadians(distance, units));\n}\n\n/**\n * Converts any bearing angle from the north line direction (positive clockwise)\n * and returns an angle between 0-360 degrees (positive clockwise), 0 being the north line\n *\n * @name bearingToAzimuth\n * @param {number} bearing angle, between -180 and +180 degrees\n * @returns {number} angle between 0 and 360 degrees\n */\nexport function bearingToAzimuth(bearing: number): number {\n let angle = bearing % 360;\n if (angle < 0) {\n angle += 360;\n }\n return angle;\n}\n\n/**\n * Converts any azimuth angle from the north line direction (positive clockwise)\n * and returns an angle between -180 and +180 degrees (positive clockwise), 0 being the north line\n *\n * @name azimuthToBearing\n * @param {number} angle between 0 and 360 degrees\n * @returns {number} bearing between -180 and +180 degrees\n */\nexport function azimuthToBearing(angle: number): number {\n angle = angle % 360;\n if (angle > 0) return angle > 180 ? angle - 360 : angle;\n return angle < -180 ? angle + 360 : angle;\n}\n\n/**\n * Converts an angle in radians to degrees\n *\n * @name radiansToDegrees\n * @param {number} radians angle in radians\n * @returns {number} degrees between 0 and 360 degrees\n */\nexport function radiansToDegrees(radians: number): number {\n const degrees = radians % (2 * Math.PI);\n return (degrees * 180) / Math.PI;\n}\n\n/**\n * Converts an angle in degrees to radians\n *\n * @name degreesToRadians\n * @param {number} degrees angle between 0 and 360 degrees\n * @returns {number} angle in radians\n */\nexport function degreesToRadians(degrees: number): number {\n const radians = degrees % 360;\n return (radians * Math.PI) / 180;\n}\n\n/**\n * Converts a length to the requested unit.\n * Valid units: miles, nauticalmiles, inches, yards, meters, metres, kilometers, centimeters, feet\n *\n * @param {number} length to be converted\n * @param {Units} [originalUnit=\"kilometers\"] of the length\n * @param {Units} [finalUnit=\"kilometers\"] returned unit\n * @returns {number} the converted length\n */\nexport function convertLength(\n length: number,\n originalUnit: Units = \"kilometers\",\n finalUnit: Units = \"kilometers\"\n): number {\n if (!(length >= 0)) {\n throw new Error(\"length must be a positive number\");\n }\n return radiansToLength(lengthToRadians(length, originalUnit), finalUnit);\n}\n\n/**\n * Converts a area to the requested unit.\n * Valid units: kilometers, kilometres, meters, metres, centimetres, millimeters, acres, miles, yards, feet, inches, hectares\n * @param {number} area to be converted\n * @param {Units} [originalUnit=\"meters\"] of the distance\n * @param {Units} [finalUnit=\"kilometers\"] returned unit\n * @returns {number} the converted area\n */\nexport function convertArea(\n area: number,\n originalUnit: AreaUnits = \"meters\",\n finalUnit: AreaUnits = \"kilometers\"\n): number {\n if (!(area >= 0)) {\n throw new Error(\"area must be a positive number\");\n }\n\n const startFactor = areaFactors[originalUnit];\n if (!startFactor) {\n throw new Error(\"invalid original units\");\n }\n\n const finalFactor = areaFactors[finalUnit];\n if (!finalFactor) {\n throw new Error(\"invalid final units\");\n }\n\n return (area / startFactor) * finalFactor;\n}\n\n/**\n * isNumber\n *\n * @param {*} num Number to validate\n * @returns {boolean} true/false\n * @example\n * turf.isNumber(123)\n * //=true\n * turf.isNumber('foo')\n * //=false\n */\nexport function isNumber(num: any): boolean {\n return !isNaN(num) && num !== null && !Array.isArray(num);\n}\n\n/**\n * isObject\n *\n * @param {*} input variable to validate\n * @returns {boolean} true/false, including false for Arrays and Functions\n * @example\n * turf.isObject({elevation: 10})\n * //=true\n * turf.isObject('foo')\n * //=false\n */\nexport function isObject(input: any): boolean {\n return input !== null && typeof input === \"object\" && !Array.isArray(input);\n}\n\n/**\n * Validate BBox\n *\n * @private\n * @param {Array} bbox BBox to validate\n * @returns {void}\n * @throws {Error} if BBox is not valid\n * @example\n * validateBBox([-180, -40, 110, 50])\n * //=OK\n * validateBBox([-180, -40])\n * //=Error\n * validateBBox('Foo')\n * //=Error\n * validateBBox(5)\n * //=Error\n * validateBBox(null)\n * //=Error\n * validateBBox(undefined)\n * //=Error\n */\nexport function validateBBox(bbox: any): void {\n if (!bbox) {\n throw new Error(\"bbox is required\");\n }\n if (!Array.isArray(bbox)) {\n throw new Error(\"bbox must be an Array\");\n }\n if (bbox.length !== 4 && bbox.length !== 6) {\n throw new Error(\"bbox must be an Array of 4 or 6 numbers\");\n }\n bbox.forEach((num) => {\n if (!isNumber(num)) {\n throw new Error(\"bbox must only contain numbers\");\n }\n });\n}\n\n/**\n * Validate Id\n *\n * @private\n * @param {string|number} id Id to validate\n * @returns {void}\n * @throws {Error} if Id is not valid\n * @example\n * validateId([-180, -40, 110, 50])\n * //=Error\n * validateId([-180, -40])\n * //=Error\n * validateId('Foo')\n * //=OK\n * validateId(5)\n * //=OK\n * validateId(null)\n * //=Error\n * validateId(undefined)\n * //=Error\n */\nexport function validateId(id: any): void {\n if (!id) {\n throw new Error(\"id is required\");\n }\n if ([\"string\", \"number\"].indexOf(typeof id) === -1) {\n throw new Error(\"id must be a number or a string\");\n }\n}\n","import {\n Feature,\n FeatureCollection,\n Geometry,\n LineString,\n MultiPoint,\n MultiLineString,\n MultiPolygon,\n Point,\n Polygon,\n} from \"geojson\";\nimport { isNumber } from \"@turf/helpers\";\n\n/**\n * Unwrap a coordinate from a Point Feature, Geometry or a single coordinate.\n *\n * @name getCoord\n * @param {Array|Geometry|Feature} coord GeoJSON Point or an Array of numbers\n * @returns {Array} coordinates\n * @example\n * var pt = turf.point([10, 10]);\n *\n * var coord = turf.getCoord(pt);\n * //= [10, 10]\n */\nfunction getCoord(coord: Feature | Point | number[]): number[] {\n if (!coord) {\n throw new Error(\"coord is required\");\n }\n\n if (!Array.isArray(coord)) {\n if (\n coord.type === \"Feature\" &&\n coord.geometry !== null &&\n coord.geometry.type === \"Point\"\n ) {\n return [...coord.geometry.coordinates];\n }\n if (coord.type === \"Point\") {\n return [...coord.coordinates];\n }\n }\n if (\n Array.isArray(coord) &&\n coord.length >= 2 &&\n !Array.isArray(coord[0]) &&\n !Array.isArray(coord[1])\n ) {\n return [...coord];\n }\n\n throw new Error(\"coord must be GeoJSON Point or an Array of numbers\");\n}\n\n/**\n * Unwrap coordinates from a Feature, Geometry Object or an Array\n *\n * @name getCoords\n * @param {Array|Geometry|Feature} coords Feature, Geometry Object or an Array\n * @returns {Array} coordinates\n * @example\n * var poly = turf.polygon([[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]);\n *\n * var coords = turf.getCoords(poly);\n * //= [[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]\n */\nfunction getCoords<\n G extends\n | Point\n | LineString\n | Polygon\n | MultiPoint\n | MultiLineString\n | MultiPolygon,\n>(coords: any[] | Feature | G): any[] {\n if (Array.isArray(coords)) {\n return coords;\n }\n\n // Feature\n if (coords.type === \"Feature\") {\n if (coords.geometry !== null) {\n return coords.geometry.coordinates;\n }\n } else {\n // Geometry\n if (coords.coordinates) {\n return coords.coordinates;\n }\n }\n\n throw new Error(\n \"coords must be GeoJSON Feature, Geometry Object or an Array\"\n );\n}\n\n/**\n * Checks if coordinates contains a number\n *\n * @name containsNumber\n * @param {Array} coordinates GeoJSON Coordinates\n * @returns {boolean} true if Array contains a number\n */\nfunction containsNumber(coordinates: any[]): boolean {\n if (\n coordinates.length > 1 &&\n isNumber(coordinates[0]) &&\n isNumber(coordinates[1])\n ) {\n return true;\n }\n\n if (Array.isArray(coordinates[0]) && coordinates[0].length) {\n return containsNumber(coordinates[0]);\n }\n throw new Error(\"coordinates must only contain numbers\");\n}\n\n/**\n * Enforce expectations about types of GeoJSON objects for Turf.\n *\n * @name geojsonType\n * @param {GeoJSON} value any GeoJSON object\n * @param {string} type expected GeoJSON type\n * @param {string} name name of calling function\n * @throws {Error} if value is not the expected type.\n */\nfunction geojsonType(value: any, type: string, name: string): void {\n if (!type || !name) {\n throw new Error(\"type and name required\");\n }\n\n if (!value || value.type !== type) {\n throw new Error(\n \"Invalid input to \" +\n name +\n \": must be a \" +\n type +\n \", given \" +\n value.type\n );\n }\n}\n\n/**\n * Enforce expectations about types of {@link Feature} inputs for Turf.\n * Internally this uses {@link geojsonType} to judge geometry types.\n *\n * @name featureOf\n * @param {Feature} feature a feature with an expected geometry type\n * @param {string} type expected GeoJSON type\n * @param {string} name name of calling function\n * @throws {Error} error if value is not the expected type.\n */\nfunction featureOf(feature: Feature, type: string, name: string): void {\n if (!feature) {\n throw new Error(\"No feature passed\");\n }\n if (!name) {\n throw new Error(\".featureOf() requires a name\");\n }\n if (!feature || feature.type !== \"Feature\" || !feature.geometry) {\n throw new Error(\n \"Invalid input to \" + name + \", Feature with geometry required\"\n );\n }\n if (!feature.geometry || feature.geometry.type !== type) {\n throw new Error(\n \"Invalid input to \" +\n name +\n \": must be a \" +\n type +\n \", given \" +\n feature.geometry.type\n );\n }\n}\n\n/**\n * Enforce expectations about types of {@link FeatureCollection} inputs for Turf.\n * Internally this uses {@link geojsonType} to judge geometry types.\n *\n * @name collectionOf\n * @param {FeatureCollection} featureCollection a FeatureCollection for which features will be judged\n * @param {string} type expected GeoJSON type\n * @param {string} name name of calling function\n * @throws {Error} if value is not the expected type.\n */\nfunction collectionOf(\n featureCollection: FeatureCollection,\n type: string,\n name: string\n) {\n if (!featureCollection) {\n throw new Error(\"No featureCollection passed\");\n }\n if (!name) {\n throw new Error(\".collectionOf() requires a name\");\n }\n if (!featureCollection || featureCollection.type !== \"FeatureCollection\") {\n throw new Error(\n \"Invalid input to \" + name + \", FeatureCollection required\"\n );\n }\n for (const feature of featureCollection.features) {\n if (!feature || feature.type !== \"Feature\" || !feature.geometry) {\n throw new Error(\n \"Invalid input to \" + name + \", Feature with geometry required\"\n );\n }\n if (!feature.geometry || feature.geometry.type !== type) {\n throw new Error(\n \"Invalid input to \" +\n name +\n \": must be a \" +\n type +\n \", given \" +\n feature.geometry.type\n );\n }\n }\n}\n\n/**\n * Get Geometry from Feature or Geometry Object\n *\n * @param {Feature|Geometry} geojson GeoJSON Feature or Geometry Object\n * @returns {Geometry|null} GeoJSON Geometry Object\n * @throws {Error} if geojson is not a Feature or Geometry Object\n * @example\n * var point = {\n * \"type\": \"Feature\",\n * \"properties\": {},\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [110, 40]\n * }\n * }\n * var geom = turf.getGeom(point)\n * //={\"type\": \"Point\", \"coordinates\": [110, 40]}\n */\nfunction getGeom(geojson: Feature | G): G {\n if (geojson.type === \"Feature\") {\n return geojson.geometry;\n }\n return geojson;\n}\n\n/**\n * Get GeoJSON object's type, Geometry type is prioritize.\n *\n * @param {GeoJSON} geojson GeoJSON object\n * @param {string} [name=\"geojson\"] name of the variable to display in error message (unused)\n * @returns {string} GeoJSON type\n * @example\n * var point = {\n * \"type\": \"Feature\",\n * \"properties\": {},\n * \"geometry\": {\n * \"type\": \"Point\",\n * \"coordinates\": [110, 40]\n * }\n * }\n * var geom = turf.getType(point)\n * //=\"Point\"\n */\nfunction getType(\n geojson: Feature | FeatureCollection | Geometry,\n _name?: string\n): string {\n if (geojson.type === \"FeatureCollection\") {\n return \"FeatureCollection\";\n }\n if (geojson.type === \"GeometryCollection\") {\n return \"GeometryCollection\";\n }\n if (geojson.type === \"Feature\" && geojson.geometry !== null) {\n return geojson.geometry.type;\n }\n return geojson.type;\n}\n\nexport {\n getCoord,\n getCoords,\n containsNumber,\n geojsonType,\n featureOf,\n collectionOf,\n getGeom,\n getType,\n};\n// No default export!\n","import pip from \"point-in-polygon-hao\";\nimport {\n BBox,\n Feature,\n MultiPolygon,\n Polygon,\n GeoJsonProperties,\n} from \"geojson\";\nimport { Coord } from \"@turf/helpers\";\nimport { getCoord, getGeom } from \"@turf/invariant\";\n\n// http://en.wikipedia.org/wiki/Even%E2%80%93odd_rule\n// modified from: https://github.com/substack/point-in-polygon/blob/master/index.js\n// which was modified from http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html\n/**\n * Takes a {@link Point} and a {@link Polygon} or {@link MultiPolygon} and determines if the point\n * resides inside the polygon. The polygon can be convex or concave. The function accounts for holes.\n *\n * @name booleanPointInPolygon\n * @param {Coord} point input point\n * @param {Feature} polygon input polygon or multipolygon\n * @param {Object} [options={}] Optional parameters\n * @param {boolean} [options.ignoreBoundary=false] True if polygon boundary should be ignored when determining if\n * the point is inside the polygon otherwise false.\n * @returns {boolean} `true` if the Point is inside the Polygon; `false` if the Point is not inside the Polygon\n * @example\n * var pt = turf.point([-77, 44]);\n * var poly = turf.polygon([[\n * [-81, 41],\n * [-81, 47],\n * [-72, 47],\n * [-72, 41],\n * [-81, 41]\n * ]]);\n *\n * turf.booleanPointInPolygon(pt, poly);\n * //= true\n */\nfunction booleanPointInPolygon<\n G extends Polygon | MultiPolygon,\n P extends GeoJsonProperties = GeoJsonProperties,\n>(\n point: Coord,\n polygon: Feature | G,\n options: {\n ignoreBoundary?: boolean;\n } = {}\n) {\n // validation\n if (!point) {\n throw new Error(\"point is required\");\n }\n if (!polygon) {\n throw new Error(\"polygon is required\");\n }\n\n const pt = getCoord(point);\n const geom = getGeom(polygon);\n const type = geom.type;\n const bbox = polygon.bbox;\n let polys: any[] = geom.coordinates;\n\n // Quick elimination if point is not inside bbox\n if (bbox && inBBox(pt, bbox) === false) {\n return false;\n }\n\n if (type === \"Polygon\") {\n polys = [polys];\n }\n let result = false;\n for (var i = 0; i < polys.length; ++i) {\n const polyResult = pip(pt, polys[i]);\n if (polyResult === 0) return options.ignoreBoundary ? false : true;\n else if (polyResult) result = true;\n }\n\n return result;\n}\n\n/**\n * inBBox\n *\n * @private\n * @param {Position} pt point [x,y]\n * @param {BBox} bbox BBox [west, south, east, north]\n * @returns {boolean} true/false if point is inside BBox\n */\nfunction inBBox(pt: number[], bbox: BBox) {\n return (\n bbox[0] <= pt[0] && bbox[1] <= pt[1] && bbox[2] >= pt[0] && bbox[3] >= pt[1]\n );\n}\n\nexport { booleanPointInPolygon };\nexport default booleanPointInPolygon;\n","import * as GeoTZ from \"browser-geo-tz\";\r\nimport { Coordinates, CurrectionObject } from \"./types\";\r\n\r\n// Polar to Cartesian [r, theta] => [x, y]\r\nconst p2c = (pt: Array): Array => [pt[0] * Math.cos(pt[1]), pt[0] * Math.sin(pt[1])];\r\n// Cartesian to Polar [x, y] => [r, theta]\r\nconst c2p = (pt: Array): Array => [Math.sqrt(pt[0] ** 2 + pt[1] ** 2), Math.atan2(pt[1], pt[0])];\r\n\r\n// Dregrees to Radians\r\nconst degreesToRadians = (degrees: number): number => {\r\n return (degrees % 360) * (Math.PI / 180);\r\n}\r\n\r\n// Radians to Degress\r\nconst radiansToDegrees = (radians: number): number => {\r\n return radians * (180 / Math.PI);\r\n}\r\n\r\n// Correction of time values in the format 0 to 60\r\nconst correctionArrayHour = (array: Array, values: CurrectionObject): Array => {\r\n let hour = array[0];\r\n let minute = array[1] + values.minutes;\r\n let second = array[2] + values.seconds;\r\n\r\n if (second >= 60) {\r\n minute = minute + 1;\r\n second = second - 60;\r\n } else if (second < 0) {\r\n minute = minute - 1;\r\n second = 60 - Math.abs(second);\r\n }\r\n\r\n if (minute >= 60) {\r\n hour = hour + 1;\r\n minute = minute - 60;\r\n } else if (minute < 0) {\r\n hour = hour - 1;\r\n minute = 60 - Math.abs(minute);\r\n }\r\n\r\n return [hour, minute, second];\r\n}\r\n\r\n// Decimal time to hour, minute and seconds\r\nconst hd2hms = (hd: number): Array => {\r\n let hend = Math.floor(hd);\r\n let med = (hd - hend) * 60;\r\n let mend = Math.floor((hd - hend) * 60);\r\n let sed = (med - mend) * 60;\r\n let send = Math.floor(sed);\r\n return [hend, mend, send];\r\n}\r\n\r\n// Request to the timezonedb api to fetch the timezone of the coordinates\r\nconst timeZoneName = async (coords: Coordinates) => {\r\n if (coords.lat !== null && coords.lng !== null) {\r\n try {\r\n return await GeoTZ.find(coords.lat, coords.lng);\r\n } catch (error) {\r\n throw new Error(\"TimeZone name error\");\r\n }\r\n }\r\n}\r\n\r\n// Calculate timezone offset in seconds\r\nconst getOffset = (timeZone: string | undefined) => {\r\n const timeZoneName = Intl.DateTimeFormat(\"ia\", {\r\n timeZoneName: \"short\",\r\n timeZone,\r\n })\r\n .formatToParts()\r\n .find((i) => i.type === \"timeZoneName\")?.value;\r\n const offset = timeZoneName?.slice(3);\r\n if (!offset) return 0;\r\n\r\n const matchData = offset.match(/([+-])(\\d+)(?::(\\d+))?/);\r\n if (!matchData) throw `cannot parse timezone name: ${timeZoneName}`;\r\n\r\n const [, sign, hour, minute] = matchData;\r\n let result = parseInt(hour) * 60 * 60;\r\n if (sign === \"-\") result *= -1;\r\n if (minute) result += parseInt(minute);\r\n\r\n return result;\r\n};\r\n\r\nexport {\r\n p2c,\r\n c2p,\r\n hd2hms,\r\n getOffset,\r\n timeZoneName,\r\n degreesToRadians,\r\n radiansToDegrees,\r\n correctionArrayHour\r\n}","import { CurrectionObject, LocTime, SunTime, TimeZone } from \"./types\";\r\nimport { correctionArrayHour, degreesToRadians, getOffset, hd2hms, radiansToDegrees, timeZoneName } from \"./utils\";\r\n\r\nexport class SunPosition {\r\n private STANDARD_MERIDIAN: number = 0;\r\n private lat: number;\r\n private lng: number;\r\n private TZ: Promise;\r\n private x: number;\r\n private angleDeclination: number;\r\n private sunrise: Array;\r\n private sunset: Array;\r\n private elevation: number;\r\n private azimuth: number;\r\n private durationDay: Array;\r\n private objectCurrection: CurrectionObject;\r\n private hourDay: number;\r\n private dateTimeLoc: Date;\r\n\r\n private floor = Math.floor;\r\n private round = Math.round;\r\n private sin = Math.sin;\r\n private cos = Math.cos;\r\n private tan = Math.tan;\r\n private asin = Math.asin;\r\n private acos = Math.acos;\r\n\r\n constructor(lat: number, lng: number, date: Date) {\r\n this.lat = lat;\r\n this.lng = lng;\r\n this.TZ = this.timeZoneObt();\r\n this.dateTimeLoc = date;\r\n this.calcDeclination();\r\n this.sunHour();\r\n }\r\n\r\n public setLatitude(lat: number): void {\r\n this.lat = lat;\r\n if (this.lat !== lat) {\r\n this.TZ = this.timeZoneObt();\r\n }\r\n }\r\n\r\n public setLongitude(lng: number): void {\r\n this.lng = lng;\r\n if (this.lng !== lng) {\r\n this.TZ = this.timeZoneObt();\r\n }\r\n }\r\n\r\n public setDateTime(dateTime: Date) {\r\n this.dateTimeLoc = dateTime;\r\n this.calcDeclination();\r\n this.sunHour();\r\n }\r\n\r\n public getDurationDay() {\r\n return this.durationDay;\r\n }\r\n\r\n public getDeclinationAngle() {\r\n return this.angleDeclination;\r\n }\r\n\r\n public async getTimeZone() {\r\n return this.TZ;\r\n }\r\n\r\n // Calculate the length of the day, sunrise and sunset in local time and in the official time of the meridian that\r\n // governs the spindle\r\n private sunHour(): void {\r\n this.hourDay = (2 / 15) * radiansToDegrees(this.acos(-this.tan(degreesToRadians(this.lat)) * this.tan(degreesToRadians(this.angleDeclination))));\r\n this.durationDay = hd2hms(this.hourDay);\r\n\r\n // Sunrise calculation\r\n let initDay = 12 - (this.hourDay / 2);\r\n this.sunrise = hd2hms(initDay);\r\n\r\n // Sunset calculation\r\n let endDay = 12 + (this.hourDay / 2);\r\n this.sunset = hd2hms(endDay);\r\n }\r\n\r\n // Equation of time currenction (obliquity and ellipticity)\r\n private Eot(): number {\r\n // Return in minutes\r\n let Eot = 9.87 * this.sin(degreesToRadians(2 * this.x)) - 7.53 * this.cos(degreesToRadians(this.x)) - 1.5 * this.sin(degreesToRadians(this.x));\r\n return Eot;\r\n }\r\n\r\n // Correction for position on the meridian in relation to local standard time.\r\n private currectionTime() {\r\n return new Promise(async (resolve) => {\r\n // Standard time zone meridian. If the API request fails, \r\n // set the meridian based on a multiple of 15 degrees\r\n this.STANDARD_MERIDIAN = (await this.TZ).gmtOffset ? ((await this.TZ).gmtOffset / (60 * 60)) * 15 : this.round(this.lng / 15) * 15;\r\n // Correction of time to the region's official time\r\n let currection = ((this.STANDARD_MERIDIAN - this.lng) * 4) - this.Eot();\r\n let minutes = this.round(currection);\r\n let seconds = this.round((currection - minutes) * 60);\r\n resolve({\r\n minutes,\r\n seconds\r\n })\r\n })\r\n }\r\n\r\n // Return function for solar time, with sunrise and sunset. Also returns the current input time corrected for solar time\r\n public getSunTime() {\r\n let date = this.dateTimeLoc;\r\n return new Promise(async (resolve) => {\r\n // COrrection to Local meridian\r\n let currection = await this.currectionTime();\r\n let eot = this.Eot();\r\n // Correct values above 60 or negative values in hourly data\r\n let SMT = correctionArrayHour([date.getHours(), date.getMinutes(), date.getSeconds()], { minutes: -currection.minutes, seconds: -currection.seconds });\r\n // Correction to Eot()\r\n let minutes = -this.round(eot);\r\n let seconds = -this.round((eot - minutes) * 60);\r\n let STIC = correctionArrayHour(this.sunrise, { minutes, seconds });\r\n let STEC = correctionArrayHour(this.sunset, { minutes, seconds });\r\n resolve({\r\n moment: new Date(date.getFullYear(), date.getMonth(), date.getDate(), SMT[0], SMT[1], SMT[2]),\r\n sunrise: new Date(date.getFullYear(), date.getMonth(), date.getDate(), STIC[0], STIC[1], STIC[2]),\r\n sunset: new Date(date.getFullYear(), date.getMonth(), date.getDate(), STEC[0], STEC[1], STEC[2]),\r\n })\r\n })\r\n }\r\n\r\n // Return function to local time, with sunrise and sunset. Also returns the current entry time\r\n public getLocTime() {\r\n let date = this.dateTimeLoc;\r\n return new Promise(async (resolve) => {\r\n this.objectCurrection = await this.currectionTime();\r\n // Correct values above 60 or negative values in hourly data\r\n let STIC = correctionArrayHour(this.sunrise, this.objectCurrection);\r\n let STEC = correctionArrayHour(this.sunset, this.objectCurrection);\r\n resolve({\r\n moment: date,\r\n sunrise: new Date(date.getFullYear(), date.getMonth(), date.getDate(), STIC[0], STIC[1], STIC[2]),\r\n sunset: new Date(date.getFullYear(), date.getMonth(), date.getDate(), STEC[0], STEC[1], STEC[2]),\r\n })\r\n }\r\n )\r\n }\r\n\r\n // Calculate the angle of declination\r\n private calcDeclination(): void {\r\n let date = this.dateTimeLoc;\r\n let dateInit = new Date(`01/01/${date.getFullYear()}`);\r\n let dateEnd = date;\r\n let diff = this.floor(dateEnd.getTime() - dateInit.getTime());\r\n let dayYear = diff / (1000 * 60 * 60 * 24);\r\n this.x = (360 / 365) * (dayYear - 81);\r\n this.angleDeclination = 23.45 * this.sin(degreesToRadians(this.x));\r\n }\r\n\r\n // Hour angle according to local time in hours\r\n private async calcAngleHour(): Promise {\r\n let moment = (await this.getSunTime()).moment;\r\n // For elevation calculation, consider non-standard time\r\n // The user's entry time must be understood as the official time of the location, therefore, the correction must be made\r\n // for calculating solar time.\r\n const time = moment.getHours() + (moment.getMinutes() / 60) + (moment.getSeconds() / (60 * 60));\r\n return (time - 12) * 15;\r\n }\r\n\r\n // Elevation angle\r\n public getElevation(): Promise {\r\n return new Promise(async (resolve) => {\r\n const angle = this.sin(degreesToRadians(this.angleDeclination)) * this.sin(degreesToRadians(this.lat))\r\n + this.cos(degreesToRadians(this.angleDeclination)) * this.cos(degreesToRadians(this.lat)) * this.cos(degreesToRadians(await this.calcAngleHour()));\r\n this.elevation = radiansToDegrees(this.asin(angle));\r\n resolve(this.elevation);\r\n })\r\n }\r\n\r\n // Azimuth angle\r\n public getAzimuth(): Promise {\r\n return new Promise(async (resolve) => {\r\n const angle = (this.sin(degreesToRadians(this.angleDeclination)) * this.cos(degreesToRadians(this.lat))\r\n - this.cos(degreesToRadians(this.angleDeclination)) * this.sin(degreesToRadians(this.lat)) * this.cos(degreesToRadians(await this.calcAngleHour()))) / this.cos(degreesToRadians(this.elevation));\r\n if (await this.calcAngleHour() >= 0) {\r\n this.azimuth = 360 - radiansToDegrees(this.acos(angle));\r\n } else {\r\n this.azimuth = radiansToDegrees(this.acos(angle));\r\n }\r\n resolve(this.azimuth);\r\n })\r\n }\r\n\r\n // Return function with local time zone data\r\n private async timeZoneObt(): Promise {\r\n const result = await timeZoneName({ lat: this.lat, lng: this.lng });\r\n const offset = getOffset(result && result[0]);\r\n this.STANDARD_MERIDIAN = offset ? 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