flash on 2010-1-28

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favorite:13
lines:65
license : MIT License
modified : 2010-01-28 01:21:06

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package {
    import flash.display.Sprite;
    import flash.display.BitmapData;
    import flash.display.Bitmap;
    import flash.geom.Matrix;
    import flash.geom.ColorTransform;
    import flash.display.BlendMode;
    import flash.geom.Point;
    import flash.display.BitmapDataChannel;
    import flash.filters.DisplacementMapFilter;
    import flash.events.Event;
    import flash.events.MouseEvent;
    
    [SWF(width=465,height=465,backgroundColor=0,frameRate=30)]
    public class FlashTest extends Sprite {
			private var bmpdata:BitmapData;
			private var sprite:Sprite;
			private var matrix:Matrix;
			private var colortrans:ColorTransform;
			private var filter:DisplacementMapFilter;
			
  	        public function FlashTest() {
            // write as3 code here..
    			bmpdata = new BitmapData(465,465,false,0);
    			addChild(new Bitmap(bmpdata));
    			sprite = newFig(0,0,40,0xffffff);
    			matrix = new Matrix();
    			colortrans = new ColorTransform();
    			var mapBitmap:BitmapData = new BitmapData(465,465,false,0);
    			var mapPoint:Point = mapBitmap.rect.topLeft;
    			var componentX:uint = BitmapDataChannel.RED;
    			var componentY:uint = BitmapDataChannel.GREEN;
    			var scaleX:Number = 8;
    			var scaleY:Number = 8;
    			mapBitmap.perlinNoise(240,240,2,0,false,false);
    			filter = new DisplacementMapFilter(mapBitmap,mapPoint,componentX,componentY,scaleX,scaleY);
    			addEventListener(Event.ENTER_FRAME,enterframe);
    			stage.addEventListener(MouseEvent.CLICK,reset);        
        }
        
        private function enterframe(e:Event):void {
        		bmpdata.applyFilter(bmpdata,bmpdata.rect,bmpdata.rect.topLeft,filter);
        		matrix.identity();
        		var s:Number = Math.random()*2;
        		matrix.scale(s,s);
        		matrix.rotate(Math.PI*Math.random());
        		matrix.translate(mouseX,mouseY);
        		colortrans.greenMultiplier = mouseX/465;
        		colortrans.blueMultiplier = mouseY/465;
        		colortrans.alphaMultiplier = Math.random();
        		bmpdata.draw(sprite,matrix,colortrans,BlendMode.ADD);
        }
        
        private function reset(e:MouseEvent):void {
        		bmpdata.fillRect(bmpdata.rect,0xFF000000);
        }
        
        private function newFig(cx:Number,cy:Number,size:Number,col:uint):Sprite {
        		var shape:Sprite = new Sprite();
        		shape.graphics.lineStyle(0,0x000000,0.3);
        		shape.graphics.beginFill(col);
        		shape.graphics.drawCircle(cx,cy,size*0.5);
        		shape.graphics.drawCircle(cx,cy,size*0.4);
        		var w:Number = size*0.6;
        		var h:Number = size*0.15;
        		shape.graphics.drawRect(cx-w/2,cy-h/2,w,h);
        		shape.graphics.endFill();
        		return shape;
        }
    }
}

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