三角関数を使って円を描く

/**
 * Copyright UKI0809 ( http://wonderfl.net/user/UKI0809 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/1SVI
 */

package {
    import flash.display.Sprite;
    public class DrawCircle2 extends Sprite {
        public function DrawCircle2() {
            graphics.beginFill(0x00ffff);
            graphics.lineStyle(2,0x0000ff);
            graphics.moveTo(200+100,300);
            //描画
            for( var d:int = 0; d < 360; d++ ){
                var radian:Number = d * Math.PI /180;
                graphics.lineTo(
                200+100 * Math.cos( radian ),
                300+100 * Math.sin( radian ) )
                
            }
            graphics.endFill();
            
        }
    }
}