root/as3/as3Query/samples/test/Polygon.as

package test
{
        public class Polygon extends Base
        {
                private var _corner:int = 3;
                public function get corner():int{return _corner;}
                public function set corner(value:int):void
                {
                        _corner = value;
                        draw();
                }

                internal override function drawShape(offsetX:Number, offsetY:Number):void
                {
                        graphics.moveTo(offsetX + width / 2, offsetY);
                        for(var i:int = 1; i < corner; i++)
                        {
                                var rad:Number = 2 * Math.PI / corner * i;
                                graphics.lineTo(offsetX + width  / 2 * (1 + Math.sin(rad)), 
                                                offsetY + height / 2 * (1 - Math.cos(rad)));
                        }
                }
        }
}