[sourcecode language=”java”]
package
{
import flash.display.Sprite;
import flash.events.Event;
public class Circle extends Sprite {
private var ball:Ball;
private var angle:Number = 0;
private var centerX:Number = 200;
private var centerY:Number = 200;
private var radius:Number = 100;
private var speed:Number = .1;
public function Circle() {
init();
}
private function init():void {
ball = new Ball();
addChild(ball);
ball.x = 0;
addEventListener(Event.ENTER_FRAME, onEnterFrame);
}
public function onEnterFrame(event:Event):void {
ball.x = centerX + Math.sin(angle) * radius;
ball.y = centerY + Math.cos(angle) * radius;
angle += speed;
}
}
}
[/sourcecode]
ballが円を描く