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758 lines
13 KiB
758 lines
13 KiB
/**
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* @author sole / http://soledadpenades.com
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* @author mrdoob / http://mrdoob.com
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* @author Robert Eisele / http://www.xarg.org
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* @author Philippe / http://philippe.elsass.me
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* @author Robert Penner / http://www.robertpenner.com/easing_terms_of_use.html
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* @author Paul Lewis / http://www.aerotwist.com/
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* @author lechecacharro
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* @author Josh Faul / http://jocafa.com/
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* @author egraether / http://egraether.com/
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* @author endel / http://endel.me
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* @author Ben Delarre / http://delarre.net
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*/
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// HACK: window.performance not supported on iOS
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if (typeof window.performance === 'undefined') {
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window.performance = {};
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}
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if (!window.performance.now){
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var nowOffset = Date.now();
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if (performance.timing && performance.timing.navigationStart){
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nowOffset = performance.timing.navigationStart
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}
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window.performance.now = function now(){
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return Date.now() - nowOffset;
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}
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}
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// Date.now shim for (ahem) Internet Explo(d|r)er
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if ( Date.now === undefined ) {
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Date.now = function () {
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return new Date().valueOf();
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};
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}
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var TWEEN = TWEEN || ( function () {
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var _tweens = [];
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return {
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REVISION: '12',
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getAll: function () {
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return _tweens;
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},
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removeAll: function () {
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_tweens = [];
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},
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add: function ( tween ) {
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_tweens.push( tween );
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},
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remove: function ( tween ) {
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var i = _tweens.indexOf( tween );
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if ( i !== -1 ) {
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_tweens.splice( i, 1 );
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}
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},
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update: function ( time ) {
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if ( _tweens.length === 0 ) return false;
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var i = 0;
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time = time !== undefined ? time : ( typeof window !== 'undefined' && window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
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while ( i < _tweens.length ) {
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if ( _tweens[ i ].update( time ) ) {
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i++;
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} else {
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_tweens.splice( i, 1 );
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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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TWEEN.Tween = function ( object ) {
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var _object = object;
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var _valuesStart = {};
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var _valuesEnd = {};
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var _valuesStartRepeat = {};
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var _duration = 1000;
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var _repeat = 0;
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var _yoyo = false;
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var _isPlaying = false;
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var _reversed = false;
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var _delayTime = 0;
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var _startTime = null;
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var _easingFunction = TWEEN.Easing.Linear.None;
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var _interpolationFunction = TWEEN.Interpolation.Linear;
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var _chainedTweens = [];
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var _onStartCallback = null;
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var _onStartCallbackFired = false;
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var _onUpdateCallback = null;
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var _onCompleteCallback = null;
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// Set all starting values present on the target object
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for ( var field in object ) {
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_valuesStart[ field ] = parseFloat(object[field], 10);
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}
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this.to = function ( properties, duration ) {
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if ( duration !== undefined ) {
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_duration = duration;
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}
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_valuesEnd = properties;
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return this;
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};
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this.start = function ( time ) {
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TWEEN.add( this );
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_isPlaying = true;
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_onStartCallbackFired = false;
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_startTime = time !== undefined ? time : ( typeof window !== 'undefined' && window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
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_startTime += _delayTime;
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for ( var property in _valuesEnd ) {
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// check if an Array was provided as property value
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if ( _valuesEnd[ property ] instanceof Array ) {
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if ( _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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_valuesEnd[ property ] = [ _object[ property ] ].concat( _valuesEnd[ property ] );
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}
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_valuesStart[ property ] = _object[ property ];
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if( ( _valuesStart[ property ] instanceof Array ) === false ) {
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_valuesStart[ property ] *= 1.0; // Ensures we're using numbers, not strings
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}
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_valuesStartRepeat[ property ] = _valuesStart[ property ] || 0;
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}
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return this;
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};
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this.stop = function () {
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if ( !_isPlaying ) {
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return this;
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}
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TWEEN.remove( this );
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_isPlaying = false;
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this.stopChainedTweens();
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return this;
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};
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this.stopChainedTweens = function () {
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for ( var i = 0, numChainedTweens = _chainedTweens.length; i < numChainedTweens; i++ ) {
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_chainedTweens[ i ].stop();
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}
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};
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this.delay = function ( amount ) {
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_delayTime = amount;
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return this;
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};
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this.repeat = function ( times ) {
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_repeat = times;
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return this;
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};
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this.yoyo = function( yoyo ) {
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_yoyo = yoyo;
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return this;
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};
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this.easing = function ( easing ) {
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_easingFunction = easing;
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return this;
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};
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this.interpolation = function ( interpolation ) {
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_interpolationFunction = interpolation;
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return this;
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};
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this.chain = function () {
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_chainedTweens = arguments;
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return this;
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};
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this.onStart = function ( callback ) {
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_onStartCallback = callback;
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return this;
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};
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this.onUpdate = function ( callback ) {
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_onUpdateCallback = callback;
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return this;
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};
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this.onComplete = function ( callback ) {
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_onCompleteCallback = callback;
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return this;
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};
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this.update = function ( time ) {
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var property;
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if ( time < _startTime ) {
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return true;
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}
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if ( _onStartCallbackFired === false ) {
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if ( _onStartCallback !== null ) {
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_onStartCallback.call( _object );
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}
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_onStartCallbackFired = true;
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}
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var elapsed = ( time - _startTime ) / _duration;
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elapsed = elapsed > 1 ? 1 : elapsed;
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var value = _easingFunction( elapsed );
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for ( property in _valuesEnd ) {
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var start = _valuesStart[ property ] || 0;
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var end = _valuesEnd[ property ];
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if ( end instanceof Array ) {
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_object[ property ] = _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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end = start + parseFloat(end, 10);
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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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_object[ property ] = start + ( end - start ) * value;
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}
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}
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}
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if ( _onUpdateCallback !== null ) {
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_onUpdateCallback.call( _object, value );
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}
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if ( elapsed == 1 ) {
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if ( _repeat > 0 ) {
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if( isFinite( _repeat ) ) {
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_repeat--;
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}
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// reassign starting values, restart by making startTime = now
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for( property in _valuesStartRepeat ) {
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if ( typeof( _valuesEnd[ property ] ) === "string" ) {
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_valuesStartRepeat[ property ] = _valuesStartRepeat[ property ] + parseFloat(_valuesEnd[ property ], 10);
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}
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if (_yoyo) {
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var tmp = _valuesStartRepeat[ property ];
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_valuesStartRepeat[ property ] = _valuesEnd[ property ];
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_valuesEnd[ property ] = tmp;
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_reversed = !_reversed;
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}
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_valuesStart[ property ] = _valuesStartRepeat[ property ];
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}
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_startTime = time + _delayTime;
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return true;
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} else {
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if ( _onCompleteCallback !== null ) {
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_onCompleteCallback.call( _object );
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}
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for ( var i = 0, numChainedTweens = _chainedTweens.length; i < numChainedTweens; i++ ) {
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_chainedTweens[ i ].start( time );
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}
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return false;
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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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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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Quadratic: {
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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 ) return 0.5 * k * k;
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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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InOut: function ( k ) {
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if ( ( k *= 2 ) < 1 ) return 0.5 * k * k * k;
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return 0.5 * ( ( k -= 2 ) * k * k + 2 );
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}
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},
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Quartic: {
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In: function ( k ) {
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return k * k * k * k;
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},
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Out: function ( k ) {
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return 1 - ( --k * k * k * k );
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},
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InOut: function ( k ) {
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if ( ( k *= 2 ) < 1) return 0.5 * k * k * k * k;
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return - 0.5 * ( ( k -= 2 ) * k * k * k - 2 );
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}
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},
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Quintic: {
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In: function ( k ) {
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return k * k * k * k * k;
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},
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Out: function ( k ) {
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return --k * k * k * k * k + 1;
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},
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InOut: function ( k ) {
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if ( ( k *= 2 ) < 1 ) return 0.5 * k * k * k * k * k;
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return 0.5 * ( ( k -= 2 ) * k * k * k * k + 2 );
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}
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},
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Sinusoidal: {
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In: function ( k ) {
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return 1 - Math.cos( k * Math.PI / 2 );
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},
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Out: function ( k ) {
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return Math.sin( k * Math.PI / 2 );
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},
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InOut: function ( k ) {
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return 0.5 * ( 1 - Math.cos( Math.PI * k ) );
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}
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},
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Exponential: {
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In: function ( k ) {
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return k === 0 ? 0 : Math.pow( 1024, k - 1 );
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},
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Out: function ( k ) {
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return k === 1 ? 1 : 1 - Math.pow( 2, - 10 * k );
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},
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InOut: function ( k ) {
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if ( k === 0 ) return 0;
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if ( k === 1 ) return 1;
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if ( ( k *= 2 ) < 1 ) return 0.5 * Math.pow( 1024, k - 1 );
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return 0.5 * ( - Math.pow( 2, - 10 * ( k - 1 ) ) + 2 );
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}
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},
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Circular: {
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In: function ( k ) {
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return 1 - Math.sqrt( 1 - k * k );
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},
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Out: function ( k ) {
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return Math.sqrt( 1 - ( --k * k ) );
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},
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InOut: function ( k ) {
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if ( ( k *= 2 ) < 1) return - 0.5 * ( Math.sqrt( 1 - k * k) - 1);
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return 0.5 * ( Math.sqrt( 1 - ( k -= 2) * k) + 1);
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}
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},
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Elastic: {
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In: function ( k ) {
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var s, a = 0.1, p = 0.4;
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if ( k === 0 ) return 0;
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if ( k === 1 ) return 1;
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if ( !a || a < 1 ) { a = 1; s = p / 4; }
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else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
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return - ( a * Math.pow( 2, 10 * ( k -= 1 ) ) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) );
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},
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Out: function ( k ) {
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var s, a = 0.1, p = 0.4;
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if ( k === 0 ) return 0;
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if ( k === 1 ) return 1;
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if ( !a || a < 1 ) { a = 1; s = p / 4; }
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else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
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return ( a * Math.pow( 2, - 10 * k) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) + 1 );
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},
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InOut: function ( k ) {
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var s, a = 0.1, p = 0.4;
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if ( k === 0 ) return 0;
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if ( k === 1 ) return 1;
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if ( !a || a < 1 ) { a = 1; s = p / 4; }
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else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
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if ( ( k *= 2 ) < 1 ) return - 0.5 * ( a * Math.pow( 2, 10 * ( k -= 1 ) ) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) );
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return a * Math.pow( 2, -10 * ( k -= 1 ) ) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) * 0.5 + 1;
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}
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},
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Back: {
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In: function ( k ) {
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var s = 1.70158;
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return k * k * ( ( s + 1 ) * k - s );
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},
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Out: function ( k ) {
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var s = 1.70158;
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return --k * k * ( ( s + 1 ) * k + s ) + 1;
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},
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InOut: function ( k ) {
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var s = 1.70158 * 1.525;
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if ( ( k *= 2 ) < 1 ) return 0.5 * ( k * k * ( ( s + 1 ) * k - s ) );
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return 0.5 * ( ( k -= 2 ) * k * ( ( s + 1 ) * k + s ) + 2 );
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}
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},
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Bounce: {
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In: function ( k ) {
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return 1 - TWEEN.Easing.Bounce.Out( 1 - k );
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},
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Out: function ( k ) {
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if ( k < ( 1 / 2.75 ) ) {
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return 7.5625 * k * k;
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} else if ( k < ( 2 / 2.75 ) ) {
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return 7.5625 * ( k -= ( 1.5 / 2.75 ) ) * k + 0.75;
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} else if ( k < ( 2.5 / 2.75 ) ) {
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return 7.5625 * ( k -= ( 2.25 / 2.75 ) ) * k + 0.9375;
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} else {
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return 7.5625 * ( k -= ( 2.625 / 2.75 ) ) * k + 0.984375;
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}
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},
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InOut: function ( k ) {
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if ( k < 0.5 ) return TWEEN.Easing.Bounce.In( k * 2 ) * 0.5;
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return TWEEN.Easing.Bounce.Out( k * 2 - 1 ) * 0.5 + 0.5;
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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.Interpolation = {
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|
|
|
Linear: function ( v, k ) {
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|
|
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var m = v.length - 1, f = m * k, i = Math.floor( f ), fn = TWEEN.Interpolation.Utils.Linear;
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if ( k < 0 ) return fn( v[ 0 ], v[ 1 ], f );
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if ( k > 1 ) return fn( v[ m ], v[ m - 1 ], m - f );
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|
|
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return fn( v[ i ], v[ i + 1 > m ? m : i + 1 ], f - i );
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|
|
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},
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|
|
|
Bezier: function ( v, k ) {
|
|
|
|
var b = 0, n = v.length - 1, pw = Math.pow, bn = TWEEN.Interpolation.Utils.Bernstein, i;
|
|
|
|
for ( i = 0; i <= n; i++ ) {
|
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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, f = m * k, i = Math.floor( f ), 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, i;
|
|
if ( a[ n ] ) return a[ n ];
|
|
for ( i = n; i > 1; i-- ) s *= i;
|
|
return a[ n ] = s;
|
|
|
|
};
|
|
|
|
} )(),
|
|
|
|
CatmullRom: function ( p0, p1, p2, p3, t ) {
|
|
|
|
var v0 = ( p2 - p0 ) * 0.5, v1 = ( p3 - p1 ) * 0.5, t2 = t * t, t3 = t * t2;
|
|
return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|