web/static/res/js/incmosaic.js
author Edwin Razafimahatratra <edwin@robotalismsoft.com>
Sun, 09 Dec 2012 19:59:03 +0100
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parent 30 6d5b46559bd9
child 38 cdbb56b876c9
permissions -rw-r--r--
mosaic player template niveau 2
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function IncMosaic()
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{
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	// --------------------------------------------------------------------------------------------------------------------
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	// Members
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	// --------------------------------------------------------------------------------------------------------------------
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	// Canvas
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	this.canvasId;
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	this.canvas;
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	this.ctx;
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	this.imageData;
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	/// Images
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	this.pairUrl = [];
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	this.pairImages = [];
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	this.imagesLoaded = 0;
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	this.imageWidth;
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	this.imageHeight;
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	// Effect
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	this.squareCountX;
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	this.squareCountY;
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	this.srcSquareWidth;
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	this.srcSquareHeight;
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	this.squareWidth;
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	this.squareHeight;
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	this.effects = [];
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	this.squareEffects = [];
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	// Time
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	this.startTime;
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	// --------------------------------------------------------------------------------------------------------------------
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	// Functions
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	// --------------------------------------------------------------------------------------------------------------------
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	this.addPairImages = function(url1, url2)
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	{
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		var urls = new IncPairUrl(url1, url2);
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		this.pairUrl.push(urls);
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	};
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	this.start = function(canvasId, squareCountX, squareCountY)
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	{
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		// Canvas ID
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		this.canvasId = canvasId;
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		// Set square count
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		this.squareCountX = squareCountX;
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		this.squareCountY = (squareCountY === undefined) ? squareCountX: squareCountY;
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		// Init the canvas objects
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		this.init();
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		// Register effects
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		this.registerEffects();
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		// Set a random pair images
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		this.setRandomPairImages();
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		// Set random effect on the squares
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		this.setRandomSquareEffect();
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		// Time
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		this.startTime = new Date().getTime();
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		// Main loop
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		this.loopCallback();
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	};
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	this.init = function()
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	{
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		// Init canvas objects
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		this.canvas = document.getElementById(this.canvasId );
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		this.ctx = this.canvas.getContext('2d');
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		this.ctx.fillStyle = "#000000";
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		this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
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	};
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	this.registerPreNewCanvasSize = function(newCanvasWidth, newCanvasHeight)
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	{
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		//incMosaic.imageData = incMosaic.ctx.getImageData(0, 0, incMosaic.srcSquareWidth*incMosaic.squareCountX, incMosaic.srcSquareHeight*incMosaic.squareCountY);
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	};
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	this.registerPostNewCanvasSize = function(newCanvasWidth, newCanvasHeight)
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	{
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		// Recalculate the size of the mosaic squares
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		incMosaic.squareWidth = Math.floor(newCanvasWidth / incMosaic.squareCountX);
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		incMosaic.squareHeight = Math.floor(newCanvasHeight / incMosaic.squareCountY);
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		//incMosaic.ctx.fillStyle = "#000000";
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		//incMosaic.ctx.fillRect(0, 0, incMosaic.srcSquareWidth*incMosaic.squareCountX, incMosaic.srcSquareHeight*incMosaic.squareCountY);	
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		//incMosaic.ctx.putImageData(incMosaic.imageData, 0, 0);
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	};
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	this.setRandomPairImages = function()
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	{
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		this.imagesLoaded = 0;
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		var randInd = this.randomInt(0, this.pairUrl.length);
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		var pairUrl = this.pairUrl[randInd];
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		this.pairImages.push(this.getImageFromUrl(pairUrl.imageUrl1));
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		this.pairImages.push(this.getImageFromUrl(pairUrl.imageUrl2));
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	};
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	this.setRandomSquareEffect = function()
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	{
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		for (var i = 0; i < this.squareCountX; ++i) {
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			for (var j = 0; j < this.squareCountY; ++j) {
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				var fullEffect = this.effects[this.randomInt(0, this.effects.length)].copy();
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				fullEffect.x = i;
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				fullEffect.y = j;
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				this.squareEffects.push(fullEffect);				
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			}			
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		}
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	};	
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	this.loopCallback = function()
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	{
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		var self = incMosaic;
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		if (self.imagesLoaded == 2) {
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			// Redraw
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			self.redraw();
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		}
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		// Loop
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		requestAnimationFrame(self.loopCallback);
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	};
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	this.redraw = function()
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	{
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		// Get time
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		var time = new Date().getTime();
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		if (time < this.startTime + 3000) {
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			// Draw the first image
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			this.ctx.drawImage(this.pairImages[0], 0, 0, this.srcSquareWidth*this.squareCountX, this.srcSquareHeight*this.squareCountY, 0, 0, this.squareWidth*this.squareCountX, this.squareHeight*this.squareCountY);
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			return;
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		}
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		// Update effects
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		for (var i = 0; i < this.squareEffects.length; ++i) {			
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			// Update
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			var fullEffect = this.squareEffects[i];
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			fullEffect.update(time);
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			for (var j = 0; j < 2; ++j) {
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				var effectInfo = fullEffect.effectInfos[j];
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				if (effectInfo !== null) {
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					// Draw square
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					this.drawSquare(fullEffect, this.pairImages[j], effectInfo);	
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				}
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			}
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		}		
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	};
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	this.drawSquare = function(fullEffect, image, effectInfo)
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	{
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		this.ctx.save();
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		// Global alpha
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		this.ctx.globalAlpha = effectInfo.alpha;
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		// Compute src and dest square position
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		var srcPosX = fullEffect.x * this.srcSquareWidth;
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		var srcPosY = fullEffect.y * this.srcSquareHeight;		
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		var destPosX = fullEffect.x * this.squareWidth;
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		var destPosY = fullEffect.y * this.squareHeight;		
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		// Draw colored rectangle
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		this.ctx.fillStyle = "rgba(" + effectInfo.color.r + "," + effectInfo.color.v + "," + effectInfo.color.b + "," + effectInfo.color.a + ")";
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		this.ctx.fillRect(destPosX, destPosY, this.squareWidth, this.squareHeight);
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		// Draw image
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		this.ctx.drawImage(image, srcPosX, srcPosY, this.srcSquareWidth, this.srcSquareHeight, destPosX, destPosY, this.squareWidth, this.squareHeight);
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		this.ctx.restore();
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	};
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	this.registerEffects = function()
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	{
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		var count = 7;
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		var color = 64;
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		// Create semi random effects
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		var range1 = 3000;
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		var range2 = 7000;
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		var i, time1, time2, effectParam1, effect1, effectParam2, effect2, fullEffect1;
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		for (i = 0; i < count; ++i) {
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			time1 = this.randomInt(range1, range2);
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			time2 = this.randomInt(range1, range2);
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			c1 = this.randomInt(0, color);
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			effectParam1 = new IncEffectParams(new IncColor(c1, c1, c1, 0), new IncAnim(1, time1), 1, new IncAnim(-1, time1));
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			effect1 = new IncSquareEffect_Alpha(effectParam1, createjs.Ease.quadOut, createjs.Ease.quadOut);
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			effectParam2 = new IncEffectParams(new IncColor(c1, c1, c1, 1), new IncAnim(0, time2), 0, new IncAnim(1, time2));
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			effect2 = new IncSquareEffect_Alpha(effectParam2, createjs.Ease.quadIn, createjs.Ease.quadIn, time1 / 2.5);
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			fullEffect1 = new IncFullEffect(effect1, effect2, time1, time2);
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			this.effects.push(fullEffect1);
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		}
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		// Create semi random effects
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		range1 = 10000;
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		range2 = 25000;
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		for (i = 0; i < count; ++i) {
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			time1 = this.randomInt(range1, range2);
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			time2 = this.randomInt(range1, range2);
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			c1 = this.randomInt(0, color);
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			effectParam1 = new IncEffectParams(new IncColor(c1, c1, c1, 0), new IncAnim(1, time1), 1, new IncAnim(-1, time1));
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			effect1 = new IncSquareEffect_Alpha(effectParam1, createjs.Ease.quadOut, createjs.Ease.quadOut);
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			effectParam2 = new IncEffectParams(new IncColor(c1, c1, c1, 1), new IncAnim(0, time2), 0, new IncAnim(1, time2));
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			effect2 = new IncSquareEffect_Alpha(effectParam2, createjs.Ease.quadIn, createjs.Ease.quadIn, time1 / 2.5);
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			fullEffect1 = new IncFullEffect(effect1, effect2, time1, time2);
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			this.effects.push(fullEffect1);
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		}
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		// Create semi random effects
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		range1 = 25000;
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		range2 = 30000;
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		for (i = 0; i < count; ++i) {
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			time1 = this.randomInt(range1, range2);
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			time2 = this.randomInt(range1, range2);
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			c1 = this.randomInt(0, color);
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			effectParam1 = new IncEffectParams(new IncColor(c1, c1, c1, 0), new IncAnim(1, time1), 1, new IncAnim(-1, time1));
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			effect1 = new IncSquareEffect_Alpha(effectParam1, createjs.Ease.quadOut, createjs.Ease.quadOut);
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			effectParam2 = new IncEffectParams(new IncColor(c1, c1, c1, 1), new IncAnim(0, time2), 0, new IncAnim(1, time2));
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			effect2 = new IncSquareEffect_Alpha(effectParam2, createjs.Ease.quadIn, createjs.Ease.quadIn, time1 / 2.5);
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			fullEffect1 = new IncFullEffect(effect1, effect2, time1, time2);
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			this.effects.push(fullEffect1);
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		}
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	};	
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	// --------------------------------------------------------------------------------------------------------------------
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	// Tools
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	// --------------------------------------------------------------------------------------------------------------------
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	this.randomInt = function(min, max)
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	{
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		return Math.floor(this.randomFloat(min, max));
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	};
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	this.randomFloat = function(min, max)
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	{
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		return Math.random() * (max - min) + min;
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	};
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	this.getImageFromUrl = function(url)
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	{
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		var self = incMosaic;
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		var image = new Image();
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		image.onload = function() {
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			// When the first image is loaded we can get the image dimention and init the autoresize of the canvas
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			if (self.imagesLoaded === 0) {
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				// Set some image size related vars
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				self.imageWidth = image.width;
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				self.imageHeight = image.height;
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				self.srcSquareWidth = image.width / self.squareCountX;
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				self.srcSquareHeight = image.height / self.squareCountY;
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				// Call the resize object
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				if (incResize !== undefined) {
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					incResize.resizeElements();
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				}
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			}			
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			self.imagesLoaded += 1;
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		};
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		image.src = url;
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		return image;
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	};
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}
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function IncPairUrl(url1, url2)
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{
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	this.imageUrl1 = url1;
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	this.imageUrl2 = url2;
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}
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// --------------------------------------------------------------------------------------------------------------------
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// Effects
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// --------------------------------------------------------------------------------------------------------------------
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function IncColor(r, v, b, a)
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{
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	this.r = r;
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	this.v = v;
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	this.b = b;
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	this.a = a;
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	this.copy = function()
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	{
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		return new IncColor(this.r, this.v, this.b, this.a);
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	};
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}
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function IncAnim(value, time)
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{
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	this.value = value;
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	this.time = time;
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}
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function IncEffectInfo()
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{
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	this.color;
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	this.alpha;
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}
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function IncEffectParams(color, colorAnim, alpha, alphaAnim)
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{
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	// Color
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	this.color = color;
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	this.colorAnim = colorAnim;
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	// Alpha
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	this.alpha = alpha;
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	this.alphaAnim = alphaAnim;
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	this.computeColorAnimValue = function(elapsedTime, easeFunc)
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	{
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		return this.computeAnimValue(this.colorAnim, elapsedTime, easeFunc);
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	};
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	this.computeAlphaAnimValue = function(elapsedTime, easeFunc)
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	{
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		return this.computeAnimValue(this.alphaAnim, elapsedTime, easeFunc);
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	};
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	this.computeAnimValue = function(anim, elapsedTime, easeFunc)
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	{
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		// Compute color alpha anim
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		if (elapsedTime < anim.time) {
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			return easeFunc(elapsedTime/anim.time) * anim.value;			
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		}
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		return anim.value;
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	};	
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}
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function IncSquareEffect_Alpha(effectParms, tweenColorFunc, tweenAlphaFunc, waitTime)
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{
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	// Effect parameters
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	this.effectParms = effectParms;
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	// Tween functions
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	this.tweenColorFunc = tweenColorFunc;
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	this.tweenAlphaFunc = tweenAlphaFunc;
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	// Time
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	this.waitTime = (waitTime!==undefined) ? waitTime : 0; 
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	this.update = function(elapsedTime)
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	{
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		var info = new IncEffectInfo();
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		// Compute new color
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		var newColorValue = this.effectParms.computeColorAnimValue(elapsedTime, this.tweenColorFunc);
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		info.color = this.effectParms.color.copy();
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		info.color.a += newColorValue;
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		// Compute alpha anim
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		var newAlphaValue = this.effectParms.computeAlphaAnimValue(elapsedTime, this.tweenAlphaFunc);
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		info.alpha = this.effectParms.alpha;
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		info.alpha += newAlphaValue;
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		return info;
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	};
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}
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function IncFullEffect(effect1, effect2, totalTime1, totalTime2)
23
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{
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	// Position
29
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   379
	this.x = 0;
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	this.y = 0;
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	// Effect	
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	this.effects = [effect1, effect2];
30
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	this.effectInfos = [null, null];
23
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	// Time
30
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   387
	this.startTime = [0, 0];	
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   388
	this.totalTime = [totalTime1, totalTime2];	
23
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   390
	this.copy = function()
45b05706b516 mosaic effect js first test
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   391
	{
30
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   392
		return new IncFullEffect(this.effects[0], this.effects[1], this.totalTime[0], this.totalTime[1]);
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   393
	};
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   394
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   395
	this.update = function(time)
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   396
	{
36
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diff changeset
   397
		if (this.startTime[0] === 0) {
30
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   398
			this.startTime[0] = time;
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   399
			this.startTime[1] = time;
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   400
			return;
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   401
		}
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diff changeset
   402
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diff changeset
   403
		for (var i = 0; i < 2; ++i) {
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diff changeset
   404
			// If we are in the good time range we update the effect
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diff changeset
   405
			var waitTime = this.startTime[i] + this.effects[i].waitTime;
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diff changeset
   406
			if (time > waitTime && time < this.totalTime[i] + waitTime) {
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   407
				this.effectInfos[i] = this.effects[i].update(time - waitTime);
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diff changeset
   408
			}
6d5b46559bd9 effet mosaic done
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diff changeset
   409
		}
23
45b05706b516 mosaic effect js first test
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diff changeset
   410
	};	
45b05706b516 mosaic effect js first test
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diff changeset
   411
}
45b05706b516 mosaic effect js first test
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   412
45b05706b516 mosaic effect js first test
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   413
// --------------------------------------------------------------------------------------------------------------------
45b05706b516 mosaic effect js first test
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   414
// Tools
45b05706b516 mosaic effect js first test
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// --------------------------------------------------------------------------------------------------------------------
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   416
45b05706b516 mosaic effect js first test
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   417
window.requestAnimationFrame = (function() {              
45b05706b516 mosaic effect js first test
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   418
	return window.requestAnimationFrame    ||  	// Chromium 
45b05706b516 mosaic effect js first test
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   419
		window.webkitRequestAnimationFrame ||  	// Webkit
45b05706b516 mosaic effect js first test
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diff changeset
   420
		window.mozRequestAnimationFrame    || 	// Mozilla Geko
45b05706b516 mosaic effect js first test
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   421
		window.oRequestAnimationFrame      || 	// Opera Presto
45b05706b516 mosaic effect js first test
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   422
		window.msRequestAnimationFrame     || 	// IE Trident?
45b05706b516 mosaic effect js first test
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   423
		function(callback, element){ 			// Fallback function
45b05706b516 mosaic effect js first test
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   424
		   window.setTimeout(callback, 20);                
45b05706b516 mosaic effect js first test
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diff changeset
   425
		};    
45b05706b516 mosaic effect js first test
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diff changeset
   426
})();
45b05706b516 mosaic effect js first test
Edwin Razafimahatratra <edwin@robotalismsoft.com>
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diff changeset
   427
45b05706b516 mosaic effect js first test
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   428
var incMosaic = new IncMosaic();
45b05706b516 mosaic effect js first test
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   429