Procedural Textures in HTML5 Canvas

Took the time and refactored the perlin-noise port in the post to make it look a bit more like JavaScript.

As a small side effect I got a 3x speed increase.

JS Engines are good at optimizing, but having a senseless 256 copy loop in every call doesn't really work out that well if you can have a memcpy with Array.slice().

See: http://jsperf.com/perlin-noise

clickable demo: http://jsbin.com/edobev