WaterColor Flow

WaterColor Flow
*
* @author civet
* http://www.dreamana.com/

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license : All rights reserved
modified : 2009-03-30 22:29:55

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/**
 * WaterColor Flow
 * 
 * @author civet
 * http://www.dreamana.com/
 */
package {
    import flash.display.Sprite;
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.BitmapDataChannel;
    import flash.events.*;
    import flash.geom.Point;
    import flash.utils.Timer;

[SWF(frameRate='24', backgroundColor='0xffffff')] 
    public class WaterColorFlow extends Sprite {
        private var bmd:BitmapData;
        private var seed:int;
        private var channels:uint;
        private var pt:Point
        private var offset:Array;
        private var timer:Timer;

public function WaterColorFlow() {
            bmd = new BitmapData(640, 480, true, 0x00000000);
            addChild( new Bitmap(bmd) );

seed = int(Math.random() * 10);
            channels = BitmapDataChannel.ALPHA | BitmapDataChannel.RED | BitmapDataChannel.GREEN | BitmapDataChannel.BLUE;
            pt = new Point();
            offset = [pt, pt];

timer = new Timer(60);
            timer.addEventListener(TimerEvent.TIMER, loop);
            timer.start();
            
            stage.addEventListener(MouseEvent.MOUSE_DOWN, onDown);
        }

private function onDown(event:Event):void {
            if(timer.running) timer.stop();
            else timer.start();
        }
        
        private function loop(e:Event):void {
            bmd.lock();
            bmd.perlinNoise(320, 240, 2, seed, false, true, channels, false, offset);
            bmd.unlock();
	
            pt.x += (mouseX - 320) >> 2; //offsetX;
            pt.y += (mouseY - 240) >> 2; //offsetY;
        }
    }
}

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