package org.Geometria{
	import flash.display.*;
	import flash.utils.*;
	import flash.geom.Point;
	import flash.events.*;
	public class Rhodonea extends MovieClip {
		private var R:Number;
		private var omega:Number;
		private var teta:Number=0;
		private var old,current:Point=null;
		private var n,d:Number;
		private var lineColor:uint=0;
		public function Rhodonea(R_:Number,n_:Number,d_:Number) {
			R=R_;
			n=n_;
			d=d_;
			omega=n_/d_;
		}
		public function disegna():void {
			addEventListener(Event.ENTER_FRAME,disegna_);
		}
		public function stoppa():void {
			removeEventListener(Event.ENTER_FRAME,disegna_);
		}
		public function setColor(col:uint){
			lineColor=col;
		}
		private function disegna_(event:Event):void {
			current=new Point();
			var effe:Number=f(teta);
			current.x=effe*Math.cos(teta);
			current.y=effe*Math.sin(teta);
			
			if (old!=null) {
				var linea:Shape=new Shape();			
				linea.graphics.lineStyle(0,lineColor);
				linea.graphics.moveTo(old.x,old.y);
				linea.graphics.lineTo(current.x,current.y);
				addChild(linea);
			}
			old=current;
			teta=(teta+0.1);
			if (teta>(Math.PI*d*n)+1) {
				
				removeEventListener(Event.ENTER_FRAME,disegna_);
			}
			current=null;
		}
		private function f(ics:Number):Number {
			return R * Math.cos(omega * teta);
		}
	}
}