918 lines
15 KiB
JavaScript
918 lines
15 KiB
JavaScript
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/**
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* Tween.js - Licensed under the MIT license
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* https://github.com/tweenjs/tween.js
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* ----------------------------------------------
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*
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* See https://github.com/tweenjs/tween.js/graphs/contributors for the full list of contributors.
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* Thank you all, you're awesome!
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*/
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var _Group = function () {
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this._tweens = {};
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this._tweensAddedDuringUpdate = {};
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};
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_Group.prototype = {
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getAll: function () {
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return Object.keys(this._tweens).map(function (tweenId) {
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return this._tweens[tweenId];
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}.bind(this));
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},
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removeAll: function () {
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this._tweens = {};
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},
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add: function (tween) {
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this._tweens[tween.getId()] = tween;
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this._tweensAddedDuringUpdate[tween.getId()] = tween;
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},
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remove: function (tween) {
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delete this._tweens[tween.getId()];
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delete this._tweensAddedDuringUpdate[tween.getId()];
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},
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update: function (time, preserve) {
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var tweenIds = Object.keys(this._tweens);
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if (tweenIds.length === 0) {
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return false;
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}
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time = time !== undefined ? time : TWEEN.now();
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// Tweens are updated in "batches". If you add a new tween during an update, then the
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// new tween will be updated in the next batch.
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// If you remove a tween during an update, it may or may not be updated. However,
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// if the removed tween was added during the current batch, then it will not be updated.
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while (tweenIds.length > 0) {
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this._tweensAddedDuringUpdate = {};
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for (var i = 0; i < tweenIds.length; i++) {
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var tween = this._tweens[tweenIds[i]];
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if (tween && tween.update(time) === false) {
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tween._isPlaying = false;
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if (!preserve) {
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delete this._tweens[tweenIds[i]];
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}
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}
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}
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tweenIds = Object.keys(this._tweensAddedDuringUpdate);
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}
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return true;
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}
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};
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var TWEEN = new _Group();
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TWEEN.Group = _Group;
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TWEEN._nextId = 0;
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TWEEN.nextId = function () {
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return TWEEN._nextId++;
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};
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// Include a performance.now polyfill.
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// In node.js, use process.hrtime.
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if (typeof (window) === 'undefined' && typeof (process) !== 'undefined') {
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TWEEN.now = function () {
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var time = process.hrtime();
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// Convert [seconds, nanoseconds] to milliseconds.
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return time[0] * 1000 + time[1] / 1000000;
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};
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}
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// In a browser, use window.performance.now if it is available.
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else if (typeof (window) !== 'undefined' &&
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window.performance !== undefined &&
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window.performance.now !== undefined) {
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// This must be bound, because directly assigning this function
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// leads to an invocation exception in Chrome.
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TWEEN.now = window.performance.now.bind(window.performance);
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}
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// Use Date.now if it is available.
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else if (Date.now !== undefined) {
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TWEEN.now = Date.now;
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}
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// Otherwise, use 'new Date().getTime()'.
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else {
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TWEEN.now = function () {
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return new Date().getTime();
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};
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}
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TWEEN.Tween = function (object, group) {
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this._object = object;
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this._valuesStart = {};
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this._valuesEnd = {};
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this._valuesStartRepeat = {};
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this._duration = 1000;
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this._repeat = 0;
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this._repeatDelayTime = undefined;
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this._yoyo = false;
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this._isPlaying = false;
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this._reversed = false;
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this._delayTime = 0;
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this._startTime = null;
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this._easingFunction = TWEEN.Easing.Linear.None;
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this._interpolationFunction = TWEEN.Interpolation.Linear;
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this._chainedTweens = [];
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this._onStartCallback = null;
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this._onStartCallbackFired = false;
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this._onUpdateCallback = null;
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this._onCompleteCallback = null;
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this._onStopCallback = null;
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this._group = group || TWEEN;
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this._id = TWEEN.nextId();
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};
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TWEEN.Tween.prototype = {
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getId: function getId() {
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return this._id;
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},
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isPlaying: function isPlaying() {
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return this._isPlaying;
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},
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to: function to(properties, duration) {
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this._valuesEnd = properties;
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if (duration !== undefined) {
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this._duration = duration;
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}
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return this;
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},
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start: function start(time) {
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this._group.add(this);
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this._isPlaying = true;
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this._onStartCallbackFired = false;
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this._startTime = time !== undefined ? typeof time === 'string' ? TWEEN.now() + parseFloat(time) : time : TWEEN.now();
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this._startTime += this._delayTime;
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for (var property in this._valuesEnd) {
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// Check if an Array was provided as property value
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if (this._valuesEnd[property] instanceof Array) {
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if (this._valuesEnd[property].length === 0) {
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continue;
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}
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// Create a local copy of the Array with the start value at the front
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this._valuesEnd[property] = [this._object[property]].concat(this._valuesEnd[property]);
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}
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// If `to()` specifies a property that doesn't exist in the source object,
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// we should not set that property in the object
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if (this._object[property] === undefined) {
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continue;
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}
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// Save the starting value.
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this._valuesStart[property] = this._object[property];
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if ((this._valuesStart[property] instanceof Array) === false) {
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this._valuesStart[property] *= 1.0; // Ensures we're using numbers, not strings
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}
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this._valuesStartRepeat[property] = this._valuesStart[property] || 0;
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}
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return this;
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},
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stop: function stop() {
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if (!this._isPlaying) {
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return this;
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}
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this._group.remove(this);
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this._isPlaying = false;
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if (this._onStopCallback !== null) {
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this._onStopCallback(this._object);
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}
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this.stopChainedTweens();
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return this;
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},
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end: function end() {
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this.update(this._startTime + this._duration);
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return this;
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},
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stopChainedTweens: function stopChainedTweens() {
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for (var i = 0, numChainedTweens = this._chainedTweens.length; i < numChainedTweens; i++) {
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this._chainedTweens[i].stop();
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}
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},
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group: function group(group) {
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this._group = group;
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return this;
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},
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delay: function delay(amount) {
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this._delayTime = amount;
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return this;
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},
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repeat: function repeat(times) {
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this._repeat = times;
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return this;
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},
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repeatDelay: function repeatDelay(amount) {
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this._repeatDelayTime = amount;
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return this;
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},
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yoyo: function yoyo(yy) {
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this._yoyo = yy;
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return this;
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},
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easing: function easing(eas) {
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this._easingFunction = eas;
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return this;
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},
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interpolation: function interpolation(inter) {
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this._interpolationFunction = inter;
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return this;
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},
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chain: function chain() {
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this._chainedTweens = arguments;
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return this;
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},
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onStart: function onStart(callback) {
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this._onStartCallback = callback;
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return this;
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},
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onUpdate: function onUpdate(callback) {
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this._onUpdateCallback = callback;
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return this;
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},
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onComplete: function onComplete(callback) {
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this._onCompleteCallback = callback;
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return this;
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},
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onStop: function onStop(callback) {
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this._onStopCallback = callback;
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return this;
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},
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update: function update(time) {
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var property;
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var elapsed;
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var value;
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if (time < this._startTime) {
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return true;
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}
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if (this._onStartCallbackFired === false) {
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if (this._onStartCallback !== null) {
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this._onStartCallback(this._object);
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}
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this._onStartCallbackFired = true;
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}
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elapsed = (time - this._startTime) / this._duration;
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elapsed = (this._duration === 0 || elapsed > 1) ? 1 : elapsed;
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value = this._easingFunction(elapsed);
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for (property in this._valuesEnd) {
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// Don't update properties that do not exist in the source object
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if (this._valuesStart[property] === undefined) {
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continue;
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}
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var start = this._valuesStart[property] || 0;
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var end = this._valuesEnd[property];
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if (end instanceof Array) {
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this._object[property] = this._interpolationFunction(end, value);
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} else {
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// Parses relative end values with start as base (e.g.: +10, -3)
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if (typeof (end) === 'string') {
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if (end.charAt(0) === '+' || end.charAt(0) === '-') {
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end = start + parseFloat(end);
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} else {
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end = parseFloat(end);
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}
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}
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// Protect against non numeric properties.
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if (typeof (end) === 'number') {
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this._object[property] = start + (end - start) * value;
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}
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}
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}
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if (this._onUpdateCallback !== null) {
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this._onUpdateCallback(this._object);
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}
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if (elapsed === 1) {
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if (this._repeat > 0) {
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if (isFinite(this._repeat)) {
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this._repeat--;
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}
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// Reassign starting values, restart by making startTime = now
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for (property in this._valuesStartRepeat) {
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if (typeof (this._valuesEnd[property]) === 'string') {
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this._valuesStartRepeat[property] = this._valuesStartRepeat[property] + parseFloat(this._valuesEnd[property]);
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}
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if (this._yoyo) {
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var tmp = this._valuesStartRepeat[property];
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this._valuesStartRepeat[property] = this._valuesEnd[property];
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this._valuesEnd[property] = tmp;
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}
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this._valuesStart[property] = this._valuesStartRepeat[property];
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}
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if (this._yoyo) {
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this._reversed = !this._reversed;
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}
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if (this._repeatDelayTime !== undefined) {
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this._startTime = time + this._repeatDelayTime;
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} else {
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this._startTime = time + this._delayTime;
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}
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return true;
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} else {
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if (this._onCompleteCallback !== null) {
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this._onCompleteCallback(this._object);
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}
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for (var i = 0, numChainedTweens = this._chainedTweens.length; i < numChainedTweens; i++) {
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// Make the chained tweens start exactly at the time they should,
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// even if the `update()` method was called way past the duration of the tween
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this._chainedTweens[i].start(this._startTime + this._duration);
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}
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return false;
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}
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||
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}
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||
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return true;
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||
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}
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||
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};
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||
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TWEEN.Easing = {
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Linear: {
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None: function (k) {
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return k;
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}
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},
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||
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Quadratic: {
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||
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In: function (k) {
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return k * k;
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},
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Out: function (k) {
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return k * (2 - k);
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},
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InOut: function (k) {
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if ((k *= 2) < 1) {
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return 0.5 * k * k;
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}
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return - 0.5 * (--k * (k - 2) - 1);
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}
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},
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Cubic: {
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In: function (k) {
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return k * k * k;
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},
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Out: function (k) {
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return --k * k * k + 1;
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},
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||
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InOut: function (k) {
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||
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if ((k *= 2) < 1) {
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return 0.5 * k * k * k;
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}
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||
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||
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return 0.5 * ((k -= 2) * k * k + 2);
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||
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}
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||
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},
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||
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Quartic: {
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||
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In: function (k) {
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||
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||
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return k * k * k * k;
|
||
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||
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},
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||
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Out: function (k) {
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||
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||
|
return 1 - (--k * k * k * k);
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
if ((k *= 2) < 1) {
|
||
|
return 0.5 * k * k * k * k;
|
||
|
}
|
||
|
|
||
|
return - 0.5 * ((k -= 2) * k * k * k - 2);
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Quintic: {
|
||
|
|
||
|
In: function (k) {
|
||
|
|
||
|
return k * k * k * k * k;
|
||
|
|
||
|
},
|
||
|
|
||
|
Out: function (k) {
|
||
|
|
||
|
return --k * k * k * k * k + 1;
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
if ((k *= 2) < 1) {
|
||
|
return 0.5 * k * k * k * k * k;
|
||
|
}
|
||
|
|
||
|
return 0.5 * ((k -= 2) * k * k * k * k + 2);
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Sinusoidal: {
|
||
|
|
||
|
In: function (k) {
|
||
|
|
||
|
return 1 - Math.cos(k * Math.PI / 2);
|
||
|
|
||
|
},
|
||
|
|
||
|
Out: function (k) {
|
||
|
|
||
|
return Math.sin(k * Math.PI / 2);
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
return 0.5 * (1 - Math.cos(Math.PI * k));
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Exponential: {
|
||
|
|
||
|
In: function (k) {
|
||
|
|
||
|
return k === 0 ? 0 : Math.pow(1024, k - 1);
|
||
|
|
||
|
},
|
||
|
|
||
|
Out: function (k) {
|
||
|
|
||
|
return k === 1 ? 1 : 1 - Math.pow(2, - 10 * k);
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
if (k === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (k === 1) {
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
if ((k *= 2) < 1) {
|
||
|
return 0.5 * Math.pow(1024, k - 1);
|
||
|
}
|
||
|
|
||
|
return 0.5 * (- Math.pow(2, - 10 * (k - 1)) + 2);
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Circular: {
|
||
|
|
||
|
In: function (k) {
|
||
|
|
||
|
return 1 - Math.sqrt(1 - k * k);
|
||
|
|
||
|
},
|
||
|
|
||
|
Out: function (k) {
|
||
|
|
||
|
return Math.sqrt(1 - (--k * k));
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
if ((k *= 2) < 1) {
|
||
|
return - 0.5 * (Math.sqrt(1 - k * k) - 1);
|
||
|
}
|
||
|
|
||
|
return 0.5 * (Math.sqrt(1 - (k -= 2) * k) + 1);
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Elastic: {
|
||
|
|
||
|
In: function (k) {
|
||
|
|
||
|
if (k === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (k === 1) {
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
return -Math.pow(2, 10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI);
|
||
|
|
||
|
},
|
||
|
|
||
|
Out: function (k) {
|
||
|
|
||
|
if (k === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (k === 1) {
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
return Math.pow(2, -10 * k) * Math.sin((k - 0.1) * 5 * Math.PI) + 1;
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
if (k === 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
if (k === 1) {
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
k *= 2;
|
||
|
|
||
|
if (k < 1) {
|
||
|
return -0.5 * Math.pow(2, 10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI);
|
||
|
}
|
||
|
|
||
|
return 0.5 * Math.pow(2, -10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI) + 1;
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Back: {
|
||
|
|
||
|
In: function (k) {
|
||
|
|
||
|
var s = 1.70158;
|
||
|
|
||
|
return k * k * ((s + 1) * k - s);
|
||
|
|
||
|
},
|
||
|
|
||
|
Out: function (k) {
|
||
|
|
||
|
var s = 1.70158;
|
||
|
|
||
|
return --k * k * ((s + 1) * k + s) + 1;
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
var s = 1.70158 * 1.525;
|
||
|
|
||
|
if ((k *= 2) < 1) {
|
||
|
return 0.5 * (k * k * ((s + 1) * k - s));
|
||
|
}
|
||
|
|
||
|
return 0.5 * ((k -= 2) * k * ((s + 1) * k + s) + 2);
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Bounce: {
|
||
|
|
||
|
In: function (k) {
|
||
|
|
||
|
return 1 - TWEEN.Easing.Bounce.Out(1 - k);
|
||
|
|
||
|
},
|
||
|
|
||
|
Out: function (k) {
|
||
|
|
||
|
if (k < (1 / 2.75)) {
|
||
|
return 7.5625 * k * k;
|
||
|
} else if (k < (2 / 2.75)) {
|
||
|
return 7.5625 * (k -= (1.5 / 2.75)) * k + 0.75;
|
||
|
} else if (k < (2.5 / 2.75)) {
|
||
|
return 7.5625 * (k -= (2.25 / 2.75)) * k + 0.9375;
|
||
|
} else {
|
||
|
return 7.5625 * (k -= (2.625 / 2.75)) * k + 0.984375;
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
InOut: function (k) {
|
||
|
|
||
|
if (k < 0.5) {
|
||
|
return TWEEN.Easing.Bounce.In(k * 2) * 0.5;
|
||
|
}
|
||
|
|
||
|
return TWEEN.Easing.Bounce.Out(k * 2 - 1) * 0.5 + 0.5;
|
||
|
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
};
|
||
|
|
||
|
TWEEN.Interpolation = {
|
||
|
|
||
|
Linear: function (v, k) {
|
||
|
|
||
|
var m = v.length - 1;
|
||
|
var f = m * k;
|
||
|
var i = Math.floor(f);
|
||
|
var fn = TWEEN.Interpolation.Utils.Linear;
|
||
|
|
||
|
if (k < 0) {
|
||
|
return fn(v[0], v[1], f);
|
||
|
}
|
||
|
|
||
|
if (k > 1) {
|
||
|
return fn(v[m], v[m - 1], m - f);
|
||
|
}
|
||
|
|
||
|
return fn(v[i], v[i + 1 > m ? m : i + 1], f - i);
|
||
|
|
||
|
},
|
||
|
|
||
|
Bezier: function (v, k) {
|
||
|
|
||
|
var b = 0;
|
||
|
var n = v.length - 1;
|
||
|
var pw = Math.pow;
|
||
|
var bn = TWEEN.Interpolation.Utils.Bernstein;
|
||
|
|
||
|
for (var i = 0; i <= n; i++) {
|
||
|
b += pw(1 - k, n - i) * pw(k, i) * v[i] * bn(n, i);
|
||
|
}
|
||
|
|
||
|
return b;
|
||
|
|
||
|
},
|
||
|
|
||
|
CatmullRom: function (v, k) {
|
||
|
|
||
|
var m = v.length - 1;
|
||
|
var f = m * k;
|
||
|
var i = Math.floor(f);
|
||
|
var fn = TWEEN.Interpolation.Utils.CatmullRom;
|
||
|
|
||
|
if (v[0] === v[m]) {
|
||
|
|
||
|
if (k < 0) {
|
||
|
i = Math.floor(f = m * (1 + k));
|
||
|
}
|
||
|
|
||
|
return fn(v[(i - 1 + m) % m], v[i], v[(i + 1) % m], v[(i + 2) % m], f - i);
|
||
|
|
||
|
} else {
|
||
|
|
||
|
if (k < 0) {
|
||
|
return v[0] - (fn(v[0], v[0], v[1], v[1], -f) - v[0]);
|
||
|
}
|
||
|
|
||
|
if (k > 1) {
|
||
|
return v[m] - (fn(v[m], v[m], v[m - 1], v[m - 1], f - m) - v[m]);
|
||
|
}
|
||
|
|
||
|
return fn(v[i ? i - 1 : 0], v[i], v[m < i + 1 ? m : i + 1], v[m < i + 2 ? m : i + 2], f - i);
|
||
|
|
||
|
}
|
||
|
|
||
|
},
|
||
|
|
||
|
Utils: {
|
||
|
|
||
|
Linear: function (p0, p1, t) {
|
||
|
|
||
|
return (p1 - p0) * t + p0;
|
||
|
|
||
|
},
|
||
|
|
||
|
Bernstein: function (n, i) {
|
||
|
|
||
|
var fc = TWEEN.Interpolation.Utils.Factorial;
|
||
|
|
||
|
return fc(n) / fc(i) / fc(n - i);
|
||
|
|
||
|
},
|
||
|
|
||
|
Factorial: (function () {
|
||
|
|
||
|
var a = [1];
|
||
|
|
||
|
return function (n) {
|
||
|
|
||
|
var s = 1;
|
||
|
|
||
|
if (a[n]) {
|
||
|
return a[n];
|
||
|
}
|
||
|
|
||
|
for (var i = n; i > 1; i--) {
|
||
|
s *= i;
|
||
|
}
|
||
|
|
||
|
a[n] = s;
|
||
|
return s;
|
||
|
|
||
|
};
|
||
|
|
||
|
})(),
|
||
|
|
||
|
CatmullRom: function (p0, p1, p2, p3, t) {
|
||
|
|
||
|
var v0 = (p2 - p0) * 0.5;
|
||
|
var v1 = (p3 - p1) * 0.5;
|
||
|
var t2 = t * t;
|
||
|
var t3 = t * t2;
|
||
|
|
||
|
return (2 * p1 - 2 * p2 + v0 + v1) * t3 + (- 3 * p1 + 3 * p2 - 2 * v0 - v1) * t2 + v0 * t + p1;
|
||
|
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
};
|
||
|
|
||
|
// UMD (Universal Module Definition)
|
||
|
(function (root) {
|
||
|
|
||
|
if (typeof define === 'function' && define.amd) {
|
||
|
|
||
|
// AMD
|
||
|
define([], function () {
|
||
|
return TWEEN;
|
||
|
});
|
||
|
|
||
|
} else if (typeof module !== 'undefined' && typeof exports === 'object') {
|
||
|
|
||
|
// Node.js
|
||
|
module.exports = TWEEN;
|
||
|
|
||
|
} else if (root !== undefined) {
|
||
|
|
||
|
// Global variable
|
||
|
root.TWEEN = TWEEN;
|
||
|
|
||
|
}
|
||
|
|
||
|
})(this);
|