xstream/extra/tween.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var index_1 = require("../index");
var concat_1 = require("./concat");
function interpolate(y, from, to) {
    return (from * (1 - y) + to * y);
}
function flip(fn) {
    return function (x) { return 1 - fn(1 - x); };
}
function createEasing(fn) {
    var fnFlipped = flip(fn);
    return {
        easeIn: function (x, from, to) {
            return interpolate(fn(x), from, to);
        },
        easeOut: function (x, from, to) {
            return interpolate(fnFlipped(x), from, to);
        },
        easeInOut: function (x, from, to) {
            var y = (x < 0.5) ?
                (fn(2 * x) * 0.5) :
                (0.5 + fnFlipped(2 * (x - 0.5)) * 0.5);
            return interpolate(y, from, to);
        }
    };
}
var easingPower2 = createEasing(function (x) { return x * x; });
var easingPower3 = createEasing(function (x) { return x * x * x; });
var easingPower4 = createEasing(function (x) {
    var xx = x * x;
    return xx * xx;
});
var EXP_WEIGHT = 6;
var EXP_MAX = Math.exp(EXP_WEIGHT) - 1;
function expFn(x) {
    return (Math.exp(x * EXP_WEIGHT) - 1) / EXP_MAX;
}
var easingExponential = createEasing(expFn);
var OVERSHOOT = 1.70158;
var easingBack = createEasing(function (x) { return x * x * ((OVERSHOOT + 1) * x - OVERSHOOT); });
var PARAM1 = 7.5625;
var PARAM2 = 2.75;
function easeOutFn(x) {
    var z = x;
    if (z < 1 / PARAM2) {
        return (PARAM1 * z * z);
    }
    else if (z < 2 / PARAM2) {
        return (PARAM1 * (z -= 1.5 / PARAM2) * z + 0.75);
    }
    else if (z < 2.5 / PARAM2) {
        return (PARAM1 * (z -= 2.25 / PARAM2) * z + 0.9375);
    }
    else {
        return (PARAM1 * (z -= 2.625 / PARAM2) * z + 0.984375);
    }
}
var easingBounce = createEasing(function (x) { return 1 - easeOutFn(1 - x); });
var easingCirc = createEasing(function (x) { return -(Math.sqrt(1 - x * x) - 1); });
var PERIOD = 0.3;
var OVERSHOOT_ELASTIC = PERIOD / 4;
var AMPLITUDE = 1;
function elasticIn(x) {
    var z = x;
    if (z <= 0) {
        return 0;
    }
    else if (z >= 1) {
        return 1;
    }
    else {
        z -= 1;
        return -(AMPLITUDE * Math.pow(2, 10 * z))
            * Math.sin((z - OVERSHOOT_ELASTIC) * (2 * Math.PI) / PERIOD);
    }
}
var easingElastic = createEasing(elasticIn);
var HALF_PI = Math.PI * 0.5;
var easingSine = createEasing(function (x) { return 1 - Math.cos(x * HALF_PI); });
var DEFAULT_INTERVAL = 15;
/**
 * Creates a stream of numbers emitted in a quick burst, following a numeric
 * function like sine or elastic or quadratic. tween() is meant for creating
 * streams for animations.
 *
 * Example:
 *
 * ```js
 * import tween from 'xstream/extra/tween'
 *
 * const stream = tween({
 *   from: 20,
 *   to: 100,
 *   ease: tween.exponential.easeIn,
 *   duration: 1000, // milliseconds
 * })
 *
 * stream.addListener({
 *   next: (x) => console.log(x),
 *   error: (err) => console.error(err),
 *   complete: () => console.log('concat completed'),
 * })
 * ```
 *
 * The stream would behave like the plot below:
 *
 * ```text
 * 100                  #
 * |
 * |
 * |
 * |
 * 80                  #
 * |
 * |
 * |
 * |                  #
 * 60
 * |
 * |                 #
 * |
 * |                #
 * 40
 * |               #
 * |              #
 * |            ##
 * |         ###
 * 20########
 * +---------------------> time
 * ```
 *
 * Provide a configuration object with **from**, **to**, **duration**, **ease**,
 * **interval** (optional), and this factory function will return a stream of
 * numbers following that pattern. The first number emitted will be `from`, and
 * the last number will be `to`. The numbers in between follow the easing
 * function you specify in `ease`, and the stream emission will last in total
 * `duration` milliseconds.
 *
 * The easing functions are attached to `tween` too, such as
 * `tween.linear.ease`, `tween.power2.easeIn`, `tween.exponential.easeOut`, etc.
 * Here is a list of all the available easing options:
 *
 * - `tween.linear` with ease
 * - `tween.power2` with easeIn, easeOut, easeInOut
 * - `tween.power3` with easeIn, easeOut, easeInOut
 * - `tween.power4` with easeIn, easeOut, easeInOut
 * - `tween.exponential` with easeIn, easeOut, easeInOut
 * - `tween.back` with easeIn, easeOut, easeInOut
 * - `tween.bounce` with easeIn, easeOut, easeInOut
 * - `tween.circular` with easeIn, easeOut, easeInOut
 * - `tween.elastic` with easeIn, easeOut, easeInOut
 * - `tween.sine` with easeIn, easeOut, easeInOut
 *
 * @factory true
 * @param {TweenConfig} config An object with properties `from: number`,
 * `to: number`, `duration: number`, `ease: function` (optional, defaults to
 * linear), `interval: number` (optional, defaults to 15).
 * @return {Stream}
 */
function tween(_a) {
    var from = _a.from, to = _a.to, duration = _a.duration, _b = _a.ease, ease = _b === void 0 ? tweenFactory.linear.ease : _b, _c = _a.interval, interval = _c === void 0 ? DEFAULT_INTERVAL : _c;
    var totalTicks = Math.round(duration / interval);
    return index_1.Stream.periodic(interval)
        .take(totalTicks)
        .map(function (tick) { return ease(tick / totalTicks, from, to); })
        .compose(function (s) { return concat_1.default(s, index_1.Stream.of(to)); });
}
var tweenFactory = tween;
tweenFactory.linear = { ease: interpolate };
tweenFactory.power2 = easingPower2;
tweenFactory.power3 = easingPower3;
tweenFactory.power4 = easingPower4;
tweenFactory.exponential = easingExponential;
tweenFactory.back = easingBack;
tweenFactory.bounce = easingBounce;
tweenFactory.circular = easingCirc;
tweenFactory.elastic = easingElastic;
tweenFactory.sine = easingSine;
exports.default = tweenFactory;
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"tween.js","sourceRoot":"","sources":["../src/extra/tween.ts"],"names":[],"mappings":";;AAAA,kCAAgC;AAChC,mCAA8B;AAmB9B,SAAS,WAAW,CAAC,CAAS,EAAE,IAAY,EAAE,EAAU;IACtD,OAAO,CAAC,IAAI,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,GAAG,EAAE,GAAG,CAAC,CAAC,CAAC;AACnC,CAAC;AAED,SAAS,IAAI,CAAC,EAAmB;IAC/B,OAAO,UAAA,CAAC,IAAI,OAAA,CAAC,GAAG,EAAE,CAAC,CAAC,GAAG,CAAC,CAAC,EAAb,CAAa,CAAC;AAC5B,CAAC;AAED,SAAS,YAAY,CAAC,EAAmB;IACvC,IAAI,SAAS,GAAG,IAAI,CAAC,EAAE,CAAC,CAAC;IACzB,OAAO;QACL,MAAM,YAAC,CAAC,EAAE,IAAI,EAAE,EAAE;YAChB,OAAO,WAAW,CAAC,EAAE,CAAC,CAAC,CAAC,EAAE,IAAI,EAAE,EAAE,CAAC,CAAC;QACtC,CAAC;QACD,OAAO,YAAC,CAAC,EAAE,IAAI,EAAE,EAAE;YACjB,OAAO,WAAW,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,IAAI,EAAE,EAAE,CAAC,CAAC;QAC7C,CAAC;QACD,SAAS,YAAC,CAAC,EAAE,IAAI,EAAE,EAAE;YACnB,IAAM,CAAC,GAAG,CAAC,CAAC,GAAG,GAAG,CAAC,CAAC,CAAC;gBACnB,CAAC,EAAE,CAAC,CAAC,GAAG,CAAC,CAAC,GAAG,GAAG,CAAC,CAAC,CAAC;gBACnB,CAAC,GAAG,GAAG,SAAS,CAAC,CAAC,GAAG,CAAC,CAAC,GAAG,GAAG,CAAC,CAAC,GAAG,GAAG,CAAC,CAAC;YACzC,OAAO,WAAW,CAAC,CAAC,EAAE,IAAI,EAAE,EAAE,CAAC,CAAC;QAClC,CAAC;KACF,CAAC;AACJ,CAAC;AAED,IAAI,YAAY,GAAG,YAAY,CAAC,UAAA,CAAC,IAAI,OAAA,CAAC,GAAG,CAAC,EAAL,CAAK,CAAC,CAAC;AAC5C,IAAI,YAAY,GAAG,YAAY,CAAC,UAAA,CAAC,IAAI,OAAA,CAAC,GAAG,CAAC,GAAG,CAAC,EAAT,CAAS,CAAC,CAAC;AAChD,IAAI,YAAY,GAAG,YAAY,CAAC,UAAA,CAAC;IAC/B,IAAM,EAAE,GAAG,CAAC,GAAG,CAAC,CAAC;IACjB,OAAO,EAAE,GAAG,EAAE,CAAC;AACjB,CAAC,CAAC,CAAC;AAEH,IAAM,UAAU,GAAG,CAAC,CAAC;AACrB,IAAM,OAAO,GAAG,IAAI,CAAC,GAAG,CAAC,UAAU,CAAC,GAAG,CAAC,CAAC;AACzC,SAAS,KAAK,CAAC,CAAS;IACtB,OAAO,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,GAAG,UAAU,CAAC,GAAG,CAAC,CAAC,GAAG,OAAO,CAAC;AAClD,CAAC;AACD,IAAI,iBAAiB,GAAG,YAAY,CAAC,KAAK,CAAC,CAAC;AAE5C,IAAM,SAAS,GAAG,OAAO,CAAC;AAC1B,IAAI,UAAU,GAAG,YAAY,CAAC,UAAA,CAAC,IAAI,OAAA,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC,SAAS,GAAG,CAAC,CAAC,GAAG,CAAC,GAAG,SAAS,CAAC,EAAzC,CAAyC,CAAC,CAAC;AAE9E,IAAM,MAAM,GAAG,MAAM,CAAC;AACtB,IAAM,MAAM,GAAG,IAAI,CAAC;AACpB,SAAS,SAAS,CAAC,CAAS;IAC1B,IAAI,CAAC,GAAG,CAAC,CAAC;IACV,IAAI,CAAC,GAAG,CAAC,GAAG,MAAM,EAAE;QAClB,OAAO,CAAC,MAAM,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC;KACzB;SAAM,IAAI,CAAC,GAAG,CAAC,GAAG,MAAM,EAAE;QACzB,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC,IAAI,GAAG,GAAG,MAAM,CAAC,GAAG,CAAC,GAAG,IAAI,CAAC,CAAC;KAClD;SAAM,IAAI,CAAC,GAAG,GAAG,GAAG,MAAM,EAAE;QAC3B,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC,IAAI,IAAI,GAAG,MAAM,CAAC,GAAG,CAAC,GAAG,MAAM,CAAC,CAAC;KACrD;SAAM;QACL,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC,IAAI,KAAK,GAAG,MAAM,CAAC,GAAG,CAAC,GAAG,QAAQ,CAAC,CAAC;KACxD;AACH,CAAC;AACD,IAAI,YAAY,GAAG,YAAY,CAAC,UAAA,CAAC,IAAI,OAAA,CAAC,GAAG,SAAS,CAAC,CAAC,GAAG,CAAC,CAAC,EAApB,CAAoB,CAAC,CAAC;AAE3D,IAAI,UAAU,GAAG,YAAY,CAAC,UAAA,CAAC,IAAI,OAAA,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,EAA3B,CAA2B,CAAC,CAAC;AAEhE,IAAM,MAAM,GAAG,GAAG,CAAC;AACnB,IAAM,iBAAiB,GAAG,MAAM,GAAG,CAAC,CAAC;AACrC,IAAM,SAAS,GAAG,CAAC,CAAC;AACpB,SAAS,SAAS,CAAC,CAAS;IAC1B,IAAI,CAAC,GAAG,CAAC,CAAC;IACV,IAAI,CAAC,IAAI,CAAC,EAAE;QACV,OAAO,CAAC,CAAC;KACV;SAAM,IAAI,CAAC,IAAI,CAAC,EAAE;QACjB,OAAO,CAAC,CAAC;KACV;SAAM;QACL,CAAC,IAAI,CAAC,CAAC;QACP,OAAO,CAAC,CAAC,SAAS,GAAG,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,EAAE,GAAG,CAAC,CAAC,CAAC;cACrC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,iBAAiB,CAAC,GAAG,CAAC,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC,GAAG,MAAM,CAAC,CAAC;KAChE;AACH,CAAC;AACD,IAAI,aAAa,GAAG,YAAY,CAAC,SAAS,CAAC,CAAC;AAE5C,IAAM,OAAO,GAAG,IAAI,CAAC,EAAE,GAAG,GAAG,CAAC;AAC9B,IAAI,UAAU,GAAG,YAAY,CAAC,UAAA,CAAC,IAAI,OAAA,CAAC,GAAG,IAAI,CAAC,GAAG,CAAC,CAAC,GAAG,OAAO,CAAC,EAAzB,CAAyB,CAAC,CAAC;AAE9D,IAAM,gBAAgB,GAAW,EAAE,CAAC;AAgBpC;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GA8EG;AACH,SAAS,KAAK,CAAC,EAMD;QALZ,cAAI,EACJ,UAAE,EACF,sBAAQ,EACR,YAA+B,EAA/B,oDAA+B,EAC/B,gBAA2B,EAA3B,gDAA2B;IAE3B,IAAM,UAAU,GAAG,IAAI,CAAC,KAAK,CAAC,QAAQ,GAAG,QAAQ,CAAC,CAAC;IACnD,OAAO,cAAM,CAAC,QAAQ,CAAC,QAAQ,CAAC;SAC7B,IAAI,CAAC,UAAU,CAAC;SAChB,GAAG,CAAC,UAAA,IAAI,IAAI,OAAA,IAAI,CAAC,IAAI,GAAG,UAAU,EAAE,IAAI,EAAE,EAAE,CAAC,EAAjC,CAAiC,CAAC;SAC9C,OAAO,CAAC,UAAA,CAAC,IAAI,OAAA,gBAAM,CAAS,CAAC,EAAE,cAAM,CAAC,EAAE,CAAC,EAAE,CAAC,CAAC,EAAhC,CAAgC,CAAC,CAAC;AACpD,CAAC;AAED,IAAM,YAAY,GAAgC,KAAK,CAAC;AAExD,YAAY,CAAC,MAAM,GAAG,EAAE,IAAI,EAAE,WAAW,EAAE,CAAC;AAC5C,YAAY,CAAC,MAAM,GAAG,YAAY,CAAC;AACnC,YAAY,CAAC,MAAM,GAAG,YAAY,CAAC;AACnC,YAAY,CAAC,MAAM,GAAG,YAAY,CAAC;AACnC,YAAY,CAAC,WAAW,GAAG,iBAAiB,CAAC;AAC7C,YAAY,CAAC,IAAI,GAAG,UAAU,CAAC;AAC/B,YAAY,CAAC,MAAM,GAAG,YAAY,CAAC;AACnC,YAAY,CAAC,QAAQ,GAAG,UAAU,CAAC;AACnC,YAAY,CAAC,OAAO,GAAG,aAAa,CAAC;AACrC,YAAY,CAAC,IAAI,GAAG,UAAU,CAAC;AAE/B,kBAAe,YAAY,CAAC","sourcesContent":["import {Stream} from '../index';\nimport concat from './concat';\n\nexport type Ease = (x: number, from: number, to: number) => number;\nexport type Easings = {\n  easeIn: Ease;\n  easeOut: Ease;\n  easeInOut: Ease;\n};\n\nexport type NumericFunction = (input: number) => number;\n\nexport interface TweenConfig {\n  from: number;\n  to: number;\n  duration: number;\n  ease?: Ease;\n  interval?: number;\n}\n\nfunction interpolate(y: number, from: number, to: number): number {\n  return (from * (1 - y) + to * y);\n}\n\nfunction flip(fn: NumericFunction): NumericFunction {\n  return x => 1 - fn(1 - x);\n}\n\nfunction createEasing(fn: NumericFunction): Easings {\n  let fnFlipped = flip(fn);\n  return {\n    easeIn(x, from, to) {\n      return interpolate(fn(x), from, to);\n    },\n    easeOut(x, from, to) {\n      return interpolate(fnFlipped(x), from, to);\n    },\n    easeInOut(x, from, to) {\n      const y = (x < 0.5) ?\n        (fn(2 * x) * 0.5) :\n        (0.5 + fnFlipped(2 * (x - 0.5)) * 0.5);\n      return interpolate(y, from, to);\n    }\n  };\n}\n\nlet easingPower2 = createEasing(x => x * x);\nlet easingPower3 = createEasing(x => x * x * x);\nlet easingPower4 = createEasing(x => {\n  const xx = x * x;\n  return xx * xx;\n});\n\nconst EXP_WEIGHT = 6;\nconst EXP_MAX = Math.exp(EXP_WEIGHT) - 1;\nfunction expFn(x: number): number {\n  return (Math.exp(x * EXP_WEIGHT) - 1) / EXP_MAX;\n}\nlet easingExponential = createEasing(expFn);\n\nconst OVERSHOOT = 1.70158;\nlet easingBack = createEasing(x => x * x * ((OVERSHOOT + 1) * x - OVERSHOOT));\n\nconst PARAM1 = 7.5625;\nconst PARAM2 = 2.75;\nfunction easeOutFn(x: number): number {\n  let z = x;\n  if (z < 1 / PARAM2) {\n    return (PARAM1 * z * z);\n  } else if (z < 2 / PARAM2) {\n    return (PARAM1 * (z -= 1.5 / PARAM2) * z + 0.75);\n  } else if (z < 2.5 / PARAM2) {\n    return (PARAM1 * (z -= 2.25 / PARAM2) * z + 0.9375);\n  } else {\n    return (PARAM1 * (z -= 2.625 / PARAM2) * z + 0.984375);\n  }\n}\nlet easingBounce = createEasing(x => 1 - easeOutFn(1 - x));\n\nlet easingCirc = createEasing(x => -(Math.sqrt(1 - x * x) - 1));\n\nconst PERIOD = 0.3;\nconst OVERSHOOT_ELASTIC = PERIOD / 4;\nconst AMPLITUDE = 1;\nfunction elasticIn(x: number): number {\n  let z = x;\n  if (z <= 0) {\n    return 0;\n  } else if (z >= 1) {\n    return 1;\n  } else {\n    z -= 1;\n    return -(AMPLITUDE * Math.pow(2, 10 * z))\n      * Math.sin((z - OVERSHOOT_ELASTIC) * (2 * Math.PI) / PERIOD);\n  }\n}\nlet easingElastic = createEasing(elasticIn);\n\nconst HALF_PI = Math.PI * 0.5;\nlet easingSine = createEasing(x => 1 - Math.cos(x * HALF_PI));\n\nconst DEFAULT_INTERVAL: number = 15;\n\nexport interface TweenFactory {\n  (config: TweenConfig): Stream<number>;\n  linear: { ease: Ease };\n  power2: Easings;\n  power3: Easings;\n  power4: Easings;\n  exponential: Easings;\n  back: Easings;\n  bounce: Easings;\n  circular: Easings;\n  elastic: Easings;\n  sine: Easings;\n}\n\n/**\n * Creates a stream of numbers emitted in a quick burst, following a numeric\n * function like sine or elastic or quadratic. tween() is meant for creating\n * streams for animations.\n *\n * Example:\n *\n * ```js\n * import tween from 'xstream/extra/tween'\n *\n * const stream = tween({\n *   from: 20,\n *   to: 100,\n *   ease: tween.exponential.easeIn,\n *   duration: 1000, // milliseconds\n * })\n *\n * stream.addListener({\n *   next: (x) => console.log(x),\n *   error: (err) => console.error(err),\n *   complete: () => console.log('concat completed'),\n * })\n * ```\n *\n * The stream would behave like the plot below:\n *\n * ```text\n * 100                  #\n * |\n * |\n * |\n * |\n * 80                  #\n * |\n * |\n * |\n * |                  #\n * 60\n * |\n * |                 #\n * |\n * |                #\n * 40\n * |               #\n * |              #\n * |            ##\n * |         ###\n * 20########\n * +---------------------> time\n * ```\n *\n * Provide a configuration object with **from**, **to**, **duration**, **ease**,\n * **interval** (optional), and this factory function will return a stream of\n * numbers following that pattern. The first number emitted will be `from`, and\n * the last number will be `to`. The numbers in between follow the easing\n * function you specify in `ease`, and the stream emission will last in total\n * `duration` milliseconds.\n *\n * The easing functions are attached to `tween` too, such as\n * `tween.linear.ease`, `tween.power2.easeIn`, `tween.exponential.easeOut`, etc.\n * Here is a list of all the available easing options:\n *\n * - `tween.linear` with ease\n * - `tween.power2` with easeIn, easeOut, easeInOut\n * - `tween.power3` with easeIn, easeOut, easeInOut\n * - `tween.power4` with easeIn, easeOut, easeInOut\n * - `tween.exponential` with easeIn, easeOut, easeInOut\n * - `tween.back` with easeIn, easeOut, easeInOut\n * - `tween.bounce` with easeIn, easeOut, easeInOut\n * - `tween.circular` with easeIn, easeOut, easeInOut\n * - `tween.elastic` with easeIn, easeOut, easeInOut\n * - `tween.sine` with easeIn, easeOut, easeInOut\n *\n * @factory true\n * @param {TweenConfig} config An object with properties `from: number`,\n * `to: number`, `duration: number`, `ease: function` (optional, defaults to\n * linear), `interval: number` (optional, defaults to 15).\n * @return {Stream}\n */\nfunction tween({\n  from,\n  to,\n  duration,\n  ease = tweenFactory.linear.ease,\n  interval = DEFAULT_INTERVAL\n}: TweenConfig): Stream<number> {\n  const totalTicks = Math.round(duration / interval);\n  return Stream.periodic(interval)\n    .take(totalTicks)\n    .map(tick => ease(tick / totalTicks, from, to))\n    .compose(s => concat<number>(s, Stream.of(to)));\n}\n\nconst tweenFactory: TweenFactory = <TweenFactory> tween;\n\ntweenFactory.linear = { ease: interpolate };\ntweenFactory.power2 = easingPower2;\ntweenFactory.power3 = easingPower3;\ntweenFactory.power4 = easingPower4;\ntweenFactory.exponential = easingExponential;\ntweenFactory.back = easingBack;\ntweenFactory.bounce = easingBounce;\ntweenFactory.circular = easingCirc;\ntweenFactory.elastic = easingElastic;\ntweenFactory.sine = easingSine;\n\nexport default tweenFactory;\n"]}