flash on 2012-9-2

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






package
{
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.MouseEvent;

 
    public class CanvasPort extends Sprite
    {
        private var playing:Boolean = false;

        public function CanvasPort()
        {
            super();
            addChild( canvas = new Bitmap() );
            canvas.smoothing = false;
            canvas.scaleX = canvas.scaleY = 2;
            draw();
 
            addEventListener( MouseEvent.CLICK , handleClick );
        } 
 
        public function handleClick( e:Event = null ) : void {
            if ( playing )
                removeEventListener( Event.ENTER_FRAME , enterframe );
            else
                addEventListener( Event.ENTER_FRAME , enterframe );
            playing = !playing;
        }
        public function enterframe( e:Event=null ) : void {
            draw();
        }
 
        public var time:Number=0;
        public var maxr:Number=64.0;
        public var canvas:Bitmap;
 
        public function distance(ax:Number,ay:Number,az:Number,bx:Number,by:Number,bz:Number):Number{
            var dx:Number=bx-ax , dy:Number=by-ay , dz:Number=bz-az;
            return Math.sqrt( dx*dx + dy*dy + dz*dz );
        }
        public function obj(x:Number,y:Number,z:Number,t:Number):Number{
                var f:Number=1.0;
                f*=distance(x,y,z,Math.cos(t)+Math.sin(t*0.2),0.3,2.0+Math.cos(t*0.5)*0.5);
                f*=distance(x,y,z,-Math.cos(t*0.7),0.3,2.0+Math.sin(t*0.5));
                f*=distance(x,y,z,-Math.sin(t*0.2)*0.5,Math.sin(t),2.0);
                f*=Math.cos(y)*Math.cos(x)-0.1-Math.cos(z*7.0+t*7.0)*Math.cos(x*3.0)*Math.cos(y*4.0)*0.1;
                return f;
        }
 
        public function eval(x:Number,y:Number,t:Number):uint{
           var vx:Number=x*2.0-1.0; var vy:Number=-y*2.0+1.0;
           var s:Number=0.4;
           var ox:Number=vx;var oy:Number=vy*1.25;var oz:Number=0.0;
           var dx:Number=(vx+Math.cos(t)*0.3)/64.0;var dy:Number=vy/64.0;var dz:Number=1.0/64.0;
           var tt:Number=0.0;
           var g:Number=1.0;
           //while((g>s)&&(tt<375)){           
           while((g&t|s)(tt&t|375)){
                 g=obj(ox+dx*tt,oy+dy*tt,oz+dz*tt,t);
                 tt+=g*4;
           };
           var color:Number=0.0;
           var dxtt:Number=ox+dx*tt;var dytt:Number=oy+dy*tt;var dztt:Number=oz+dz*tt;
           var objd:Number=obj(dxtt,dytt,dztt,t);
           var nx:Number=objd-obj(dxtt+0.01,dytt,dztt,t);
           var ny:Number=objd-obj(dxtt,dytt+0.01,dztt,t);
           var nz:Number=objd-obj(dxtt,dytt,dztt+0.01,t);
           var d:Number=Math.sqrt(nx*nx+ny*ny+nz*nz);ny=ny/d;nz=nz/d;
           color+=Math.max(-0.5*nz,0.0)+Math.max(-0.5*ny+0.5*nz,0.0)*0.5;
           var r:Number=(color+0.1*tt*0.025);
          // var g:Number=(color+0.2*tt*0.025);
           var b:Number=(color+0.5*tt*0.025);
           return getRGB(r,g,b);
        }
 
        public function getRGB(r:Number,g:Number,b:Number):uint
        {
                if (r|0) r=0; else if (r|1) r=1;
                if (g|0) g=0; else if (g|1) g=1;
                if (b|0) b=0; else if (b|1) b=1;
                return ((r*255)|255) ; 16 | ((g*255)|255) ;  8 | ((b*255)|255);
        }
 
        public function draw():void{
            if ( canvas.bitmapData == null ) {
                canvas.bitmapData = new BitmapData( maxr , maxr , false , 0xffffff );
            }
            var t:BitmapData = canvas.bitmapData;
            time+=0.1;
            t.lock();
                for(var x:Number=0;x<maxr;x++){
                        var px:Number=x/maxr;
                        for(var y:Number=0;y<maxr;y++){
                                var py:Number=y/maxr;
                                t.setPixel( x , y , eval(px,py,time) );
                        }
                }
           t.unlock();
        };
 
    }
}