// cpt-city: gacruxa/mccahon/mccahon-21 (svg)
//
// Gradients based on integer sequences and traditional Japanese
// colours, by US-based digital artist Gacruxa.
//
// author: Gacruxa
// copyright: CC BY 3.0
// year: 2014
// url: https://phillips.shef.ac.uk/pub/cpt-city/gacruxa/mccahon
#declare mccahon_21 =
color_map {
  [0.00000 color rgbf <0.3137,0.2784,0.1255,0.0000>]
  [0.03076 color rgbf <0.3725,0.3137,0.1412,0.0000>]
  [0.06128 color rgbf <0.4510,0.3608,0.1647,0.0000>]
  [0.09204 color rgbf <0.5490,0.4196,0.1961,0.0000>]
  [0.12256 color rgbf <0.6549,0.4824,0.2275,0.0000>]
  [0.15332 color rgbf <0.7608,0.5412,0.2549,0.0000>]
  [0.18384 color rgbf <0.8549,0.5961,0.2824,0.0000>]
  [0.21460 color rgbf <0.9333,0.6392,0.3059,0.0000>]
  [0.24512 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.24585 color rgbf <1.0000,0.6745,0.3216,0.0000>]
  [0.24658 color rgbf <1.0000,0.6627,0.3176,0.0000>]
  [0.24731 color rgbf <0.9961,0.6392,0.3059,0.0000>]
  [0.24805 color rgbf <0.9686,0.6118,0.2902,0.0000>]
  [0.24854 color rgbf <0.9490,0.5922,0.2824,0.0000>]
  [0.24927 color rgbf <0.9216,0.5608,0.2706,0.0000>]
  [0.25000 color rgbf <0.8980,0.5412,0.2588,0.0000>]
  [0.25073 color rgbf <0.8902,0.5333,0.2549,0.0000>]
  [0.28149 color rgbf <0.8941,0.5412,0.2588,0.0000>]
  [0.31201 color rgbf <0.9059,0.5569,0.2667,0.0000>]
  [0.34277 color rgbf <0.9216,0.5804,0.2784,0.0000>]
  [0.37329 color rgbf <0.9373,0.6039,0.2941,0.0000>]
  [0.40405 color rgbf <0.9569,0.6314,0.3059,0.0000>]
  [0.43457 color rgbf <0.9686,0.6510,0.3137,0.0000>]
  [0.46533 color rgbf <0.9804,0.6667,0.3216,0.0000>]
  [0.49585 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.49634 color rgbf <0.9804,0.6549,0.3059,0.0000>]
  [0.49683 color rgbf <0.9686,0.6275,0.2863,0.0000>]
  [0.49731 color rgbf <0.9529,0.5961,0.2627,0.0000>]
  [0.49805 color rgbf <0.9255,0.5373,0.2196,0.0000>]
  [0.49853 color rgbf <0.9098,0.5020,0.1922,0.0000>]
  [0.49902 color rgbf <0.8941,0.4706,0.1686,0.0000>]
  [0.49951 color rgbf <0.8824,0.4471,0.1529,0.0000>]
  [0.50000 color rgbf <0.8784,0.4392,0.1490,0.0000>]
  [0.53003 color rgbf <0.8863,0.4510,0.1569,0.0000>]
  [0.56030 color rgbf <0.9098,0.4784,0.1765,0.0000>]
  [0.59033 color rgbf <0.9373,0.5176,0.2039,0.0000>]
  [0.62060 color rgbf <0.9647,0.5608,0.2353,0.0000>]
  [0.65064 color rgbf <0.9922,0.6078,0.2667,0.0000>]
  [0.68066 color rgbf <1.0000,0.6431,0.2902,0.0000>]
  [0.71094 color rgbf <1.0000,0.6627,0.3098,0.0000>]
  [0.74097 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.74219 color rgbf <0.9294,0.6431,0.3098,0.0000>]
  [0.74316 color rgbf <0.8627,0.6078,0.2941,0.0000>]
  [0.74439 color rgbf <0.7608,0.5490,0.2706,0.0000>]
  [0.74561 color rgbf <0.6471,0.4863,0.2392,0.0000>]
  [0.74658 color rgbf <0.5569,0.4314,0.2118,0.0000>]
  [0.74780 color rgbf <0.4510,0.3647,0.1804,0.0000>]
  [0.74878 color rgbf <0.3804,0.3255,0.1608,0.0000>]
  [0.75000 color rgbf <0.3176,0.2863,0.1412,0.0000>]
  [0.78125 color rgbf <0.2863,0.2667,0.1333,0.0000>]
  [0.81250 color rgbf <0.2706,0.2588,0.1255,0.0000>]
  [0.84375 color rgbf <0.2667,0.2549,0.1216,0.0000>]
  [0.87500 color rgbf <0.2745,0.2588,0.1216,0.0000>]
  [0.90625 color rgbf <0.2863,0.2627,0.1216,0.0000>]
  [0.93750 color rgbf <0.2980,0.2706,0.1255,0.0000>]
  [0.96875 color rgbf <0.3098,0.2784,0.1255,0.0000>]
  [1.00000 color rgbf <0.3137,0.2784,0.1255,0.0000>]
}