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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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vec3 hueShift( vec3 color, float hueAdjust ){ | |
const vec3 kRGBToYPrime = vec3 (0.299, 0.587, 0.114); | |
const vec3 kRGBToI = vec3 (0.596, -0.275, -0.321); | |
const vec3 kRGBToQ = vec3 (0.212, -0.523, 0.311); | |
const vec3 kYIQToR = vec3 (1.0, 0.956, 0.621); | |
const vec3 kYIQToG = vec3 (1.0, -0.272, -0.647); | |
const vec3 kYIQToB = vec3 (1.0, -1.107, 1.704); |