// write as3 code here..
package {
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Loader;
	import flash.display.LoaderInfo;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.geom.ColorTransform;
	import flash.geom.Matrix;
	import flash.geom.Rectangle;
	import flash.net.URLRequest;
	import flash.system.LoaderContext;
	import flash.system.Security;
	
	[SWF(width=800, height=600, backgroundColor=0x000000)]

/**
	 * 溶けるエフェクト。
	 * 右上と左上から溶けていく。
	 */
	public class Main05 extends Sprite {
		
		// ----------------------------
		//	データ
		// ----------------------------
		
//		[Embed(source="http://img.f.hatena.ne.jp/images/fotolife/s/siba2260/20081019/20081019220109.jpg")] private var P1:Class;
		private var image:Bitmap;
		private var loader:Loader;
		
		
		// ----------------------------
		//	メンバ変数
		// ----------------------------
		
		private var enterFrameCount:int = 0;
		private var splitSize:int = 5;
		private var meltImageList:Vector.<MeltImage> = new Vector.<MeltImage>();
		private var dispImage:Bitmap = new Bitmap(new BitmapData(800, 600, true, 0x00FFFFFF));
		
		
		// ----------------------------
		//	初期化
		// ----------------------------
		
		public function Main05() {
			Security.loadPolicyFile("http://farm2.static.flickr.com/crossdomain.xml"); 
			var context:LoaderContext = new LoaderContext(true);
			loader = new Loader();
			loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
			loader.load(new URLRequest("http://farm4.static.flickr.com/3180/3115974098_d1b27674ef.jpg?v=0"), context);
		}
		
		
		// ----------------------------
		//	内部メソッド
		// ----------------------------
		
		private function splitImage(x:Number, y:Number):void {
			var bmp:BitmapData = new BitmapData(splitSize, splitSize, true, 0x00FFFFFF);
			var mat:Matrix = new Matrix();
			mat.translate(-x, -y);
			bmp.draw(image, mat);
			
			var tempImage:MeltImage = new MeltImage(bmp);
			tempImage.x = image.x + x;
			tempImage.y = image.y + y;
			meltImageList[meltImageList.length] = tempImage;
			
			var rect:Rectangle = new Rectangle(x, y, splitSize, splitSize);
			image.bitmapData.fillRect(rect, 0x00FFFFFF);
		}
		
		
		// ----------------------------
		//	イベント
		// ----------------------------
		
		private function onComplete(event:Event):void {
			var loaderInfo:LoaderInfo = event.currentTarget as LoaderInfo;
			var loader:Loader = loaderInfo.loader;
			var bmp:BitmapData = new BitmapData(loader.width, loader.height, true, 0x00FFFFFF);
			bmp.draw(loader);
			image = new Bitmap(bmp);
			image.x = 400 - image.width/2;
			image.y = 300 - image.height/2;
			addChild(image);
			
			addChild(dispImage);
			
			addEventListener(Event.ENTER_FRAME, onEnterFrame);
		}
		
		private function onEnterFrame(event:Event):void {
			enterFrameCount++;
			
			const bmp:BitmapData = dispImage.bitmapData;
			bmp.colorTransform(bmp.rect, new ColorTransform(1, 1, 1, 1, 0, 0, 0, -0x11));
			
			var numSplitX:int = image.width / splitSize;
			
			for (var i:int=0; i<enterFrameCount; i++) {
				if (i <= numSplitX/2) {
					splitImage(i*splitSize, (enterFrameCount-1-i)*splitSize);
				}
				if (numSplitX-i > numSplitX/2) {
					splitImage((numSplitX-i)*splitSize, (enterFrameCount-1-i)*splitSize);
				}
			}
			
			for (var j:int=meltImageList.length-1; j>-1; j--) {
				var meltImage:MeltImage = meltImageList[j];
				meltImage.move();
				
				var mat:Matrix = new Matrix();
				mat.translate(meltImage.x, meltImage.y);
				bmp.draw(meltImage.bitmapData, mat);
				
				if (meltImage.y > stage.stageHeight) {
					meltImageList.splice(j, 1);
				}
			}
		}
		
	}
}

// ------------------------------------
//	内部クラス
// ------------------------------------

import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.PixelSnapping;
import flash.filters.BlurFilter;
import flash.events.Event;
import flash.geom.Point;

class MeltImage {
	
	// --------------------------------
	//	メンバ変数
	// --------------------------------
	
	public var x:Number = 0;
	public var y:Number = 0;
	private var isStage:Boolean = false;
	public var bitmapData:BitmapData;
	private var speed:Number = Math.random()*10+10;
	
	
	// --------------------------------
	//	初期化
	// --------------------------------
	
	public function MeltImage(bitmapData:BitmapData) {
		this.bitmapData = bitmapData;
		
		//bitmapData.applyFilter(bitmapData, bitmapData.rect, new Point(), new BlurFilter(10, 10));
		//filters = [new BlurFilter(15, 15)];
	}
	
	
	// --------------------------------
	//	パブリック
	// --------------------------------
	
	public function move():void {
		y += speed;
	}
	
}

右と左上からピースが崩れていく