forked from: forked from: whatever

man, screw trigonometry

by wh0 29 Jul 2012

• Forked from wh0's forked from: whatever
• Diff: 25
• Related works: 3
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/**
 * Copyright wh0 ( http://wonderfl.net/user/wh0 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/Frop
 */

// forked from wh0's forked from: whatever
// 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('oQECAAAMX091dENvb3JkAKMABHNyYwChAgQBAA9kc3QAMAEA8QAAEAAdAgDBAQAAAAkCAIABAEAACQIAgAEAgAAKAgBAAQBAAAoCAEABAIAAAgIAQAIAAAACAQDiAgAAAAUBAOICAFQA');
            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 | BitmapDataChannel.BLUE,
                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()
texn f1, f0.rg, t0
; f2.r = min(f1.r, f1.g, f1.b)
; f2.g = max(f1.r, f1.g, f1.b)
mov f2.rg, f1.rr
min f2.r, f1.g
min f2.r, f1.b
max f2.g, f1.g
max f2.g, f1.b
; f1.rgb = (f1.rgb - f2.rrr) / (f2.ggg - f2.rrr)
sub f2.g, f2.r
sub f1.rgb, f2.rrr
div f1.rgb, f2.ggg
*/