ButterflyCurve

/**
 * Copyright 12346 ( http://wonderfl.net/user/12346 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/3RKt
 */

//http://mathworld.wolfram.com/ButterflyCurve.html
package{[SWF(frameRate=180)]public class g extends Sprite{
 public var t:Number=0,C:Shape=new Shape,R:Graphics=C.graphics
 public function g(){addChild(C).x=C.y=232;R.lineStyle(0),R.moveTo(f(0),0)
  addEventListener("enterFrame",function():void{
   var r:Number=f(t+=1/128);R.lineTo(r*Math.cos(t),r*Math.sin(t))
 })}
 public function f(t:Number):Number{return 64*(

  Math.pow(2.71828182845905,Math.cos(t))-2*Math.cos(4*t)+Math.pow(Math.sin(t/12),5)

)}}import flash.display.*}