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require "rubygems" | |
require "chunky_png" | |
require "base64" | |
module Sass::Script::Functions | |
def background_noise(c, noise = 0.5, opacity = 0.08, size = 200, mono = false) | |
# Convert SASS numbers to Ruby classes | |
noise = noise.to_s.to_f if noise.is_a? Sass::Script::Number |
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/** | |
* Provides requestAnimationFrame in a cross browser way. | |
* @author paulirish / http://paulirish.com/ | |
*/ | |
if ( !window.requestAnimationFrame ) { | |
window.requestAnimationFrame = ( function() { | |
return window.webkitRequestAnimationFrame || |
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// http://mrl.nyu.edu/~perlin/noise/ | |
var ImprovedNoise = function () { | |
var p = [151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10, | |
23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87, | |
174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211, | |
133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208, | |
89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5, | |
202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119, |
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// Ported from Stefan Gustavson's java implementation | |
// http://staffwww.itn.liu.se/~stegu/simplexnoise/simplexnoise.pdf | |
// Read Stefan's excellent paper for details on how this code works. | |
// | |
// Sean McCullough [email protected] | |
/** | |
* You can pass in a random number generator object if you like. | |
* It is assumed to have a random() method. | |
*/ |