forked from: whatever

now it's animated. what a waste of CPU.

by wh0 26 Sep 2011

• Forked from wh0's whatever
• Diff: 23
• Related works: 3
Embed

/**
 * Copyright wh0 ( http://wonderfl.net/user/wh0 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/nRUC
 */

// forked from wh0's whatever
package {
    import flash.display.*;
    import flash.events.*;
    import flash.filters.*;
    import flash.geom.*;
    
    import mx.utils.Base64Decoder;
    public class FlashTest extends Sprite {
        
        private const seed:uint = Math.random() * 0x80000000;
        private var p1:Point = new Point(0, 0);
        private var p2:Point = new Point(32, 32);
        private var bd:BitmapData;
        
        public function FlashTest() {
            stage.scaleMode = StageScaleMode.NO_SCALE;
            stage.align = StageAlign.TOP_LEFT;
            var d:Base64Decoder = new Base64Decoder();
            d.decode('oQECAAAMX091dENvb3JkAKMABHNyYwChAgQBAA9kc3QAMAEA8QAAEAAyAQAgvwAAAAEBAMEBAKAAHQIAEAEAQAAGAgAQAQAAADICAIA/dHZFAwIAEAIAAAAdAgDiAgD8ADIBAEA/gAAAMgEAIL+AAAABAgBhAQBgABgCAOICABgAMgEAgEAAAAAyAQBAv4AAADIBACC/gAAAAgEAgAIAAAABAQBhAgBgADIBABA/gAAA');
            var sf:ShaderFilter = new ShaderFilter(new Shader(d.toByteArray()));
            bd = new BitmapData(stage.stageWidth, stage.stageHeight, false, 0x000000);
            addChild(new Bitmap(bd)).filters = [sf];
            addEventListener(Event.ENTER_FRAME, frame);
        }
        
        private function frame(e:Event):void {
            bd.perlinNoise(
                128, 128, 2,
                seed,
                false, true,
                BitmapDataChannel.RED | BitmapDataChannel.GREEN,
                false,
                [p1, p2]
            );
            p1.x += Math.SQRT1_2;
            p1.y += 1;
            p2.x += Math.SQRT2;
            p2.y += 1;
        }
        
    }
}

/*
parameter "_OutCoord", float2, f0.rg, in
texture "src", t0
parameter "dst", float4, f1, out

; f1 = sample() - (0.5, 0.5)
texn f1, f0.rg, t0
set f1.b, -0.5
add f1.rg, f1.bb
; f2.a = atan2(f1.g, f1.r) * 3 / pi
mov f2.a, f1.g
atan2 f2.a, f1.r
set f2.r, 0.95492965855137201461330258023509
mul f2.a, f2.r
; f1.r = 2 - abs(f2.a)
; f1.g = abs(f2.a + 1) - 1
; f1.b = abs(f2.a - 1) - 1
mov f2.rgb, f2.aaa
set f1.g, 1
set f1.b, -1
add f2.gb, f1.gb
abs f2.rgb, f2.rgb
set f1.r, 2
set f1.g, -1
set f1.b, -1
sub f1.r, f2.r
add f1.gb, f2.gb
set f1.a, 1
*/