forked from: flash on 2010-4-22

by taishun 26 Apr 2010

Embed

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

// forked from kiyobu's flash on 2010-4-22
package {
    import flash.display.Sprite;
    import flash.geom.Point;
    import flash.events.Event;
    public class FlashTest extends Sprite {
    		public const AG2RG:Number = Math.PI / 180;
	    public var list:Array = new Array(50);
        
        public function FlashTest() {
        		var lgh:uint = list.length;
      		for(var i:uint = 0; i < lgh; i++){
      			list[i] = new Point2(random(stage.stageWidth), random(stage.stageHeight));
      			list[i].ag = random(360);
      			list[i].spX = Math.cos(list[i].ag * AG2RG) * 2;
      			list[i].spY = Math.sin(list[i].ag * AG2RG) * 2;
      		}
      		addEventListener(Event.ENTER_FRAME, loop);
        }
        public function loop(e:Event):void{
        		graphics.clear();
        		graphics.moveTo(list[0].x, list[0].y);
	        	var lgh:uint = list.length;
      		for(var i:uint = 0; i < lgh; i++){
      			var scl:Number = (i/lgh);
      			list[i].x += list[i].spX * scl;
      			list[i].y += list[i].spY * scl;
      			if (list[i].x > stage.stageWidth){
      				list[i].x = stage.stageWidth;
      				list[i].spX *= -1;
      			} else if (list[i].x < 0){
      				list[i].x = 0;
      				list[i].spX *= -1;
      			}
      			if (list[i].y > stage.stageHeight){
      				list[i].y = stage.stageHeight;
      				list[i].spY *= -1;
      			} else if (list[i].y < 0){
      				list[i].y = 0;
      				list[i].spY *= -1;
      			}
	        		graphics.beginFill(0x666666, 1);
	        		graphics.drawCircle(list[i].x, list[i].y, 5 * scl);
	        		graphics.endFill();
	        		if (i > 0){
		        		graphics.lineStyle(scl, 0x666666, scl);
		        		graphics.lineTo(list[i -1].x, list[i -1].y);
	        		}
      		}
        }
        public function random(n:Number):Number{
        		return Math.floor(Math.random()*n);
        }
    }
}
import flash.geom.Point;
dynamic class Point2 extends Point {
	public function Point2(xx:Number, yy:Number){
		x = xx;
		y = yy;
	}
}