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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,171 @@ | ||
| // This THREEx helps you preload your data. Texture/sound/images, etc... | ||
| // | ||
| // # Code | ||
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| // | ||
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| /** @namespace */ | ||
| var THREEx = THREEx || {}; | ||
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| ////////////////////////////////////////////////////////////////////////////////// | ||
| // // | ||
| ////////////////////////////////////////////////////////////////////////////////// | ||
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| // # Constructor | ||
| THREEx.Preloader = function() | ||
| { | ||
| this._flow = new THREEx.Preloader.Flow(); | ||
| this._cache = new THREEx.Preloader.MicroCache(); | ||
| this._done = false; | ||
| } | ||
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| // # Destructor | ||
| THREEx.Preloader.prototype.destroy = function() | ||
| { | ||
| this._flow.destroy(); | ||
| } | ||
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| ////////////////////////////////////////////////////////////////////////////////// | ||
| // // | ||
| ////////////////////////////////////////////////////////////////////////////////// | ||
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| THREEx.Preloader.prototype.start = function() | ||
| { | ||
| this._flow.seq(function(next){ | ||
| this._done = true; | ||
| this.trigger('complete'); | ||
| }.bind(this)); | ||
| } | ||
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| /** | ||
| * Getter for the cache | ||
| */ | ||
| THREEx.Preloader.prototype.cache= function(){ return this._cache; } | ||
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| /** | ||
| * Getter for the done | ||
| * | ||
| */ | ||
| THREEx.Preloader.prototype.done = function(){ return this._done; } | ||
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| ////////////////////////////////////////////////////////////////////////////////// | ||
| // // | ||
| ////////////////////////////////////////////////////////////////////////////////// | ||
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| /** | ||
| * Load a texture | ||
| * @param {String} the url of the texture | ||
| * @param {String} cacheName the name of the asset in the cache. if false, then dont store in cache | ||
| * @returns {THREE.Preloader} return the object itself for chained api | ||
| */ | ||
| THREEx.Preloader.prototype.texture = function(url, assetName, mapping) | ||
| { | ||
| this._flow.par(function(next){ | ||
| // if it is already in the cache, do nothing | ||
| if( assetName && this._cache.contains(assetName) ){ | ||
| next(); | ||
| }else{ | ||
| // if not in cache, put it immediatly and start loading | ||
| var texture = THREE.ImageUtils.loadTexture(url, mapping, function(){ | ||
| next(); | ||
| }); | ||
| if( assetName ) this._cache.set(assetName, texture); | ||
| } | ||
| }.bind(this)); | ||
| return this; | ||
| } | ||
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| /** | ||
| * Load a texture | ||
| * @param {String} the url of the texture | ||
| * @param {String} cacheName the name of the asset in the cache. if false, then dont store in cache | ||
| * @returns {THREE.Preloader} return the object itself for chained api | ||
| */ | ||
| THREEx.Preloader.prototype.textureCube = function(urls, assetName, mapping) | ||
| { | ||
| this._flow.par(function(next){ | ||
| // if it is already in the cache, do nothing | ||
| if( assetName && this._cache.contains(assetName) ){ | ||
| next(); | ||
| }else{ | ||
| // if not in cache, put it immediatly and start loading | ||
| var texture = THREE.ImageUtils.loadTextureCube(urls, mapping, function(){ | ||
| next(); | ||
| }); | ||
| if( assetName ) this._cache.set(assetName, texture); | ||
| } | ||
| }.bind(this)); | ||
| return this; | ||
| } | ||
|
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| ////////////////////////////////////////////////////////////////////////////////// | ||
| // put some helpers // | ||
| ////////////////////////////////////////////////////////////////////////////////// | ||
| /** | ||
| * Flow control - from https://github.com/jeromeetienne/gowiththeflow.js | ||
| */ | ||
| THREEx.Preloader.Flow = function(){ | ||
| var self, stack = [], timerId = setTimeout(function(){ timerId = null; self._next(); }, 0); | ||
| return self = { | ||
| destroy : function(){ timerId && clearTimeout(timerId); }, | ||
| par : function(callback, isSeq){ | ||
| if(isSeq || !(stack[stack.length-1] instanceof Array)) stack.push([]); | ||
| stack[stack.length-1].push(callback); | ||
| return self; | ||
| },seq : function(callback){ return self.par(callback, true); }, | ||
| _next : function(err, result){ | ||
| var errors = [], results = [], callbacks = stack.shift() || [], nbReturn = callbacks.length, isSeq = nbReturn == 1; | ||
| callbacks && callbacks.forEach(function(fct, index){ | ||
| fct(function(error, result){ | ||
| errors[index] = error; | ||
| results[index] = result; | ||
| if(--nbReturn == 0) self._next(isSeq?errors[0]:errors, isSeq?results[0]:results) | ||
| }, err, result) | ||
| }) | ||
| } | ||
| } | ||
| }; | ||
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| /** | ||
| * from https://github.com/jeromeetienne/MicroCache.js | ||
| */ | ||
| THREEx.Preloader.MicroCache = function(){ | ||
| var _values = {}; | ||
| return { | ||
| get : function(key){ return _values[key]; }, | ||
| contains: function(key){ return key in _values; }, | ||
| remove : function(key){ delete _values[key]; }, | ||
| set : function(key, value){ _values[key] = value;}, | ||
| values : function(){ return _values; }, | ||
| reset : function(){ _value = {}; }, | ||
| getSet : function(key, value){ | ||
| if( !this.contains(key) ){ | ||
| this.set(key, typeof value == 'function' ? value() : value ) | ||
| } | ||
| return this.get(key); | ||
| } | ||
| } | ||
| }; | ||
|
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| /** | ||
| * microevents.js - https://github.com/jeromeetienne/microevent.js | ||
| */ | ||
| (function(destObj){ | ||
| destObj._events = {}; | ||
| destObj.bind = function(event, fct){ | ||
| this._events[event] = this._events[event] || []; | ||
| this._events[event].push(fct); | ||
| }; | ||
| destObj.unbind = function(event, fct){ | ||
| if( event in this._events === false ) return; | ||
| this._events[event].splice(this._events[event].indexOf(fct), 1); | ||
| }; | ||
| destObj.trigger = function(event /* , args... */){ | ||
| if( event in this._events === false ) return; | ||
| for(var i = 0; i < this._events[event].length; i++){ | ||
| this._events[event][i].apply(this, Array.prototype.slice.call(arguments, 1)) | ||
| } | ||
| } | ||
| })(THREEx.Preloader.prototype); |