flash on 2014-2-3

/**
 * Copyright bradsedito ( http://wonderfl.net/user/bradsedito )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/k4oT
 */






package 
{
    import flash.events.Event;
    import flash.display.Sprite;
    import com.bit101.components.*;
    
    [SWF(width=465, height=465, backgroundColor=0xeeeeee, frameRate=60)]
    
    
    public class ThreeDee extends Sprite 
    {
        public     var circles3D:Array = []; // x, y, z, scale, angle, dir
        public     var numCircles:int = 0;
        private     var focalLength:int = 100;
        private     var sw:int, sh:int;
        private     var centerX:int, centerY:int;
        private     var d:Label; // debug
       
       
        public function ThreeDee () 
        {
            sw = stage.stageWidth, sh = stage.stageHeight;
            centerX = sw * .5, centerY = sh * .5;
            
            d = new Label(this);
            
            for (var i:int = 0; i < 40; i+=1) {
                addCircle(sw * .5, sh * .5, 0, i);
            }
            
            addEventListener(Event.ENTER_FRAME, loop);
        }
               
//  |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
       private function addCircle(  x:Number,y:Number,z:Number,angle:Number,dir:Boolean=true  ):void 
       {
            circles3D.push( x,y,z,1,angle,dir);
            numCircles++;
        }


        private function loop(e:Event):void 
        {
            graphics.clear();
            graphics.beginFill(0xeeeeee);
            graphics.drawRect(0, 0, sw, sh);
            graphics.endFill();
            
            for (var i:int = 0;  i < numCircles;  i++) 
            {
                var ix:int      =   i  * 6
                var iy:int      =   ix + 1
                var iz:int      =   ix + 2
                var iScale:int  =   ix + 3
                var iAngle:int  =   ix + 4
                var iDir:int    =   ix + 5
                
                var dir:Boolean = circles3D[iDir];
                var angle:Number = circles3D[iAngle];
                
                angle += .05;
                
                if (Math.abs(angle) >= 40) angle = 0;
                
                var zPos:Number    =  angle * 50;
                var scale:Number   =  focalLength / (focalLength + zPos);
                var xPos:Number    =  (((500) * Math.sin(angle)) + (mouseX-centerX)*10) * Math.abs(scale) + (sw-mouseX);
                var yPos:Number    =  (((500) * Math.cos(angle)) + (mouseY-centerY)*10) * Math.abs(scale) + (sh-mouseY);
                
                circles3D[ix]      =  xPos;
                circles3D[iy]      =  yPos;
                circles3D[iz]      =  zPos;
                
                circles3D[iScale]  =  scale;
                circles3D[iAngle]  =  angle;
                
                graphics.beginFill((angle*5)+500000);
                graphics.drawCircle(xPos, yPos, (40 * scale));
                graphics.endFill();
            }
            
        } 


    }
}