Sin and Cosin Wave

/**
 * Copyright 883108 ( http://wonderfl.net/user/883108 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/bmDo
 */

package {
    import flash.display.Sprite;
    import flash.events.Event;
    
    public class Circle extends Sprite {
        private var angle:Number = 0;
        private var centerX:Number = stage.stageWidth/2;
        private var centerY:Number = stage.stageHeight/2;
        private var radiusX:Number = 100;
        private var radiusY:Number = 50;
        private var speed:Number = .4;
        
        public function Circle():void {
        		graphics.beginFill(0xffffff);
        		graphics.lineStyle(0, 0xcccccc);
        		graphics.moveTo(centerX, centerY);
        		
			addEventListener(Event.ENTER_FRAME, onEnterFrame);   
        }
        
        private function onEnterFrame($event:Event):void{
        		graphics.lineTo(centerX + Math.sin(angle) * radiusX, centerY + Math.cos(angle) * radiusY);
        		angle += speed;
        				
        }
    }
}