particleDispersion

/**
 * Copyright 0xABCDEF ( http://wonderfl.net/user/0xABCDEF )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/9Bla
 */

package {
	import flash.geom.Point;
	import flash.geom.Rectangle;
	import flash.display.Sprite;
	import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.events.Event;
    import flash.events.MouseEvent;
    
    import net.hires.debug.Stats;
    
    [SWF(width=465,height=465,backgroundColor=0x000000,frameRate=120)]
    public class particleDispersion extends Sprite {
        public function particleDispersion(){
            var bd:BitmapData = new BitmapData(550,400,true,0x00000000);
            var b:Bitmap = new Bitmap(bd);
            var a:Array = new Array();
            var i:int;
            function polar(d:Number):Point{
            		var xm:Number = Math.cos(d);
            		var ym:Number = Math.sin(d);
            		return (new Point(xm, ym)); 	
            }
            function ef(e:Event):void{
            		bd.fillRect(new Rectangle(0,0,465,465),0x00000000);
            		for(i = 0; i<a.length; i++){
            			bd.setPixel32(a[i].x,a[i].y,a[i].c);
            			a[i].x += polar(a[i].d).x;
            			a[i].y += polar(a[i].d).y;
            			if((a[i].x > 465)||(a[i].x < 0)||(a[i].y > 465)||(a[i].y < 0)){
            				a.splice(i,1);
            			}
            		}
            }
            function mc(e:MouseEvent):void{
            		for(i = 1; i<=360; i++){
            			a.push({x:e.localX,y:e.localY,c:0xFFFFFFFF,d:Math.random()*i});
            		}
            }
            stage.addEventListener(MouseEvent.CLICK, mc);
            stage.addEventListener(Event.ENTER_FRAME, ef);
            stage.addChild(b);
            stage.addChild(new Stats());
        }
    }
}