By Zevan | December 13, 2008
Actionscript:
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var canvas:BitmapData=new BitmapData(255,255,false,0x000000);
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addChild(new Bitmap(canvas, "auto", true));
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scaleX = scaleY = 1.5;
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addEventListener(Event.ENTER_FRAME, onLoop);
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function onLoop(evt:Event):void {
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for (var i:int = 0; i<canvas.width * canvas.height; i++) {
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var ox:int= i % canvas.width;
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var oy:int= i / canvas.width;
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var col = (ox | oy) * mouseX % 255;
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canvas.setPixel(ox, oy, col <<16 | col <<8 | col);
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}
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}
Sometimes when I'm writing a program that does some pixel pushing I'll save the file and then start arbitrarily adding bitwise operations to it.... just to see what happens. Sierpinski-esque stuff occurs often. This will work in your timeline - move your mouse left and right to generate images like these:
By Zevan | December 12, 2008
Actionscript:
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var col:int, i:int, j:int, s:int = 500, div:Number =20, outcoord:Point = new Point(), points:Vector.<Point> = new Vector.<Point>();
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for (i = 0; i<5; i++) points.push(new Point(int(Math.random()*s),int(Math.random()*s)));
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var canvas:Bitmap = Bitmap(addChild(new Bitmap(new BitmapData(s,s, false, 0xFF0000), "auto", true)));
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for (i = 0; i<canvas.width * canvas.height; i++){
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outcoord= new Point( i % canvas.width, i / canvas.width);
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col = 0;
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for (j= 0; j<points.length; j++) col += Math.max(0,255 * Math.cos(Math.atan2(outcoord.y - points[j].y, outcoord.x - points[j].x)*outcoord.x/div) );
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col /= points.length;
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canvas.bitmapData.setPixel(outcoord.x, outcoord.y, col <<16 | col <<8 | col);
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}
This is inspired by some stuff I've been doing with PixelBender. I think I'm going to convert this to processing to see how fast I can get it to run... will post that over at shapevent. People have been asking me to post swfs.... and I plan on starting to that a little bit... but since this one doesn't animate, here are a few jpgs:
By Zevan | December 3, 2008
Actionscript:
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var canvas:BitmapData = new BitmapData(400,400,false, 0x000000);
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addChild(new Bitmap(canvas));
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addEventListener(Event.ENTER_FRAME, onLoop);
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function onLoop(evt:Event):void {
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canvas.perlinNoise(200,200, 2, 1, true, false,0, true,
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[new Point(mouseX, mouseY),
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new Point(-mouseX, -mouseY)]);
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}
There area few snippets on the way that involve perlin noise. Starting here with something simple. This creates 2 octave perlin noise and moves each octave based on the mouse location.
Perlin noise was invented by Ken Perlin.