var w:Number=stage.stageWidth;
var h:Number=stage.stageHeight;
var steps:uint=5;
var stepAngle:Number=720/steps;
var div:Number=2;
var inita:Number=0;
var acc:Number=0;
 
function render(event:Event):void {
	acc+=1;
	div+=.02;
	inita+=.2;
	this.graphics.clear();
	this.graphics.beginFill(0);
	this.graphics.moveTo(w/2, h/2);
	var r:Number=1;
	var a:Number;
	var arad:Number;
	var i:int=0;
	while (r<1000) {
		if (div!=0) r+=r/div;
		a=inita;
		for (i=0; i<steps; i++) {
			a+=stepAngle;
			arad=a/180*Math.PI;
			this.graphics.lineTo(w/2+Math.cos(arad)*r, h/2+Math.sin(arad)*r);
		}
	}
}
addEventListener(Event.ENTER_FRAME, render);