xy座標をsinで

/**
 * Copyright toburau ( http://wonderfl.net/user/toburau )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/7PJO
 */

package {
    import flash.display.Sprite;
    import flash.events.Event;
    
    public class test100806 extends Sprite {
        private var ball:Ball;
        private var angleX:Number = 0;
        private var angleY:Number = 0;
        private var range:Number = 100;
        private var xspeed:Number = .2;
        private var yspeed:Number = .25;
        public function test100806() {
            ball = new Ball();
            addChild(ball);
            addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }
        public function onEnterFrame(event:Event):void {
            ball.x = stage.stageWidth/2 + Math.sin(angleX) * range;
            ball.y = stage.stageHeight/2 + Math.sin(angleY) * range;
            angleX += xspeed;
            angleY += yspeed;
        }
    }
}

import flash.display.Sprite;

class Ball extends Sprite {
    public function Ball() {
    graphics.beginFill(0xff0000);
    graphics.drawCircle(0,0,10);
    graphics.endFill();
    }
}