package
{
	import flash.display.Sprite;
	import flash.events.Event;
	
	public class object_ax_oval extends Sprite {
	        public var ball:object_ax_ball;
		private var angle:Number = 0;
		public var centerX:Number = 200;
		public var centerY:Number = 200;
		public var radiusX:Number = 200;
		public var radiusY:Number = 100;
		public var speed:Number = .1;
		
		public function adjust(s:Number):void {
		 ball.scaleX = s;
		 ball.scaleY = s;
		 }

		public function object_ax_oval()	{
			init();
		}
		private function init():void {
			ball = new object_ax_ball();
			addChild(ball);
			ball.x = 0;
			addEventListener(Event.ENTER_FRAME, onEnterFrame);
		}
		public function onEnterFrame(event:Event):void {
		// the book seems to make a mistake here
			// ball.x = centerX + Math.sin(angle) * radiusX;
			// ball.y = centerY + Math.cos(angle) * radiusY;
			ball.x = centerX + Math.cos(angle) * radiusX;
			ball.y = centerY + Math.sin(angle) * radiusY;
			angle += speed;
		}
	}
}