function drawCircle(mc:MovieClip, x:Number, y:Number, rx:Number,ry:Number):Void {
mc.lineStyle(2, 0xFF0000, 100);
mc.moveTo(x+rx, y);
mc.curveTo(rx+x, Math.tan(Math.PI/8)*ry+y, Math.sin(Math.PI/4)*rx+x, Math.sin(Math.PI/4)*ry+y);
mc.curveTo(Math.tan(Math.PI/8)*rx+x, ry+y, x, ry+y);
mc.curveTo(-Math.tan(Math.PI/8)*rx+x, ry+y, -Math.sin(Math.PI/4)*rx+x, Math.sin(Math.PI/4)*ry+y);
mc.curveTo(-rx+x, Math.tan(Math.PI/8)*ry+y, -rx+x, y);
mc.curveTo(-rx+x, -Math.tan(Math.PI/8)*ry+y, -Math.sin(Math.PI/4)*rx+x, -Math.sin(Math.PI/4)*ry+y);
mc.curveTo(-Math.tan(Math.PI/8)*rx+x, -ry+y, x, -ry+y);
mc.curveTo(Math.tan(Math.PI/8)*rx+x, -ry+y, Math.sin(Math.PI/4)*rx+x, -Math.sin(Math.PI/4)*ry+y);
mc.curveTo(rx+x, -Math.tan(Math.PI/8)*ry+y, rx+x, y);
}

원본에서 수정함

rx,ry로 타원이 그려지도록 수정