As Quiz #13 solution

Move your mouse left and right

by shapevent 29 Jan 2010

Tags

Graphics, recursion, recusive, spiral
Embed

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

// Move your mouse left and right
package {
    import flash.display.Sprite;
    import flash.events.Event;
    public class RecursiveSpiral extends Sprite {
        [SWF(width = 500, height = 500)]
        public function RecursiveSpiral() {
 
 
 /////////////////////////       
scaleX = scaleY = 0.5;
x = stage.stageWidth / 2;
y = stage.stageHeight / 2;

addEventListener(Event.ENTER_FRAME, onLoop);
function onLoop(evt:Event):void {
	graphics.clear();
	graphics.lineStyle(0,0);
	spiral(mouseX, 200);
}

function spiral(step:Number= 10, maxIter:Number=100, x:Number=0, y:Number=0, inc:Number = 1):void{
	if (inc < maxIter){
	   var theta:Number = inc * step * Math.PI / 180;
	   graphics.lineTo(x, y);
	   spiral(step, maxIter, x + theta * Math.cos(theta), y + theta * Math.sin(theta), inc + 1);
	}
}
 /////////////////////////   
 
          
        }
    }
}