flash on 2012-9-30

by tnRaro 30 Sep 2012

Embed

package {
    import flash.geom.ColorTransform;
    import flash.display.AVM1Movie;
    import flash.display.Sprite;
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    
    import flash.events.MouseEvent;
    import flash.events.Event;
    import flash.events.TimerEvent;
    
    import flash.utils.Timer;
    
    public class FlashTest extends Sprite {
        
        private var world:BitmapData = new BitmapData(stage.stageWidth, stage.stageHeight, false, 0);
        private var bitmap:Bitmap = new Bitmap(world);
        
        private var timer:Timer = new Timer(20);
        
        private var px:Vector.<Number> = new Vector.<Number>();
        private var py:Vector.<Number> = new Vector.<Number>();
        
        private var mx:Number = 0;
        private var my:Number = 0;
        
        private var l:Number = 0;
        
        private var i:int = 0;
        private var j:int = 0;
        
        public function FlashTest():void
        {
            for(i = 0; i < 2000; i += 1)
            {
                px.push(Math.random() * stage.stageWidth);
                py.push(Math.random() * stage.stageHeight);
            }

            addChild(bitmap);

            timer.addEventListener(TimerEvent.TIMER, te);
            stage.addEventListener(MouseEvent.MOUSE_MOVE, me);
            
            timer.start();
        }
        
        private function me(e:MouseEvent):void
        {
            mx = e.stageX;
            my = e.stageY;
        }
        
        private function te(e:TimerEvent):void
        {
            world.colorTransform(world.rect, new ColorTransform(1, 1, 1, 1, 0, 0, 0, -1));
            for(i = 0; i < 2000; i += 1)
            {
                l = Math.sqrt(Math.pow(mx - px[i], 2) + Math.pow(my - py[i], 2)) * .05;
                if(px[i] > mx)
                    px[i] += -1/l * mx;
                else if(px[i] < mx)
                    px[i] += 1/l * mx;
                if(py[i] > my)
                    py[i] += -1/l * my;
                else if(py[i] < my)
                    py[i] += 1/l * my;
                
                world.setPixel(px[i], py[i], 0xff0000);
            }
        }

    }
}