// cpt-city: gacruxa/mccahon/mccahon-18 (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_18 =
color_map {
  [0.00000 color rgbf <0.0824,0.0235,0.0000,0.0000>]
  [0.03125 color rgbf <0.1412,0.0706,0.0314,0.0000>]
  [0.06250 color rgbf <0.2275,0.1412,0.0745,0.0000>]
  [0.09375 color rgbf <0.3255,0.2196,0.1294,0.0000>]
  [0.12500 color rgbf <0.4353,0.3059,0.1843,0.0000>]
  [0.15625 color rgbf <0.5490,0.3961,0.2431,0.0000>]
  [0.18750 color rgbf <0.6510,0.4824,0.3020,0.0000>]
  [0.21875 color rgbf <0.7412,0.5569,0.3529,0.0000>]
  [0.25000 color rgbf <0.8078,0.6157,0.3961,0.0000>]
  [0.25049 color rgbf <0.8588,0.6667,0.4392,0.0000>]
  [0.25098 color rgbf <0.8941,0.7098,0.4824,0.0000>]
  [0.25122 color rgbf <0.9020,0.7294,0.5020,0.0000>]
  [0.25171 color rgbf <0.9176,0.7608,0.5412,0.0000>]
  [0.25220 color rgbf <0.9255,0.7843,0.5686,0.0000>]
  [0.25269 color rgbf <0.9294,0.8000,0.5922,0.0000>]
  [0.25293 color rgbf <0.9333,0.8078,0.5961,0.0000>]
  [0.25342 color rgbf <0.9412,0.8118,0.6000,0.0000>]
  [0.28418 color rgbf <0.9490,0.8039,0.5843,0.0000>]
  [0.31519 color rgbf <0.9569,0.7882,0.5529,0.0000>]
  [0.34595 color rgbf <0.9569,0.7608,0.5098,0.0000>]
  [0.37671 color rgbf <0.9608,0.7294,0.4588,0.0000>]
  [0.40747 color rgbf <0.9608,0.6980,0.4078,0.0000>]
  [0.43848 color rgbf <0.9608,0.6706,0.3647,0.0000>]
  [0.46924 color rgbf <0.9608,0.6510,0.3373,0.0000>]
  [0.50000 color rgbf <0.9608,0.6431,0.3255,0.0000>]
  [0.50098 color rgbf <0.9608,0.6549,0.3412,0.0000>]
  [0.50171 color rgbf <0.9569,0.6706,0.3686,0.0000>]
  [0.50269 color rgbf <0.9529,0.7059,0.4235,0.0000>]
  [0.50342 color rgbf <0.9490,0.7333,0.4667,0.0000>]
  [0.50440 color rgbf <0.9451,0.7686,0.5255,0.0000>]
  [0.50513 color rgbf <0.9412,0.7922,0.5608,0.0000>]
  [0.50610 color rgbf <0.9412,0.8078,0.5922,0.0000>]
  [0.50684 color rgbf <0.9412,0.8118,0.6000,0.0000>]
  [0.53735 color rgbf <0.9451,0.7961,0.5843,0.0000>]
  [0.56763 color rgbf <0.9490,0.7686,0.5412,0.0000>]
  [0.59815 color rgbf <0.9529,0.7294,0.4902,0.0000>]
  [0.62842 color rgbf <0.9608,0.6863,0.4275,0.0000>]
  [0.65894 color rgbf <0.9647,0.6431,0.3647,0.0000>]
  [0.68921 color rgbf <0.9725,0.6078,0.3137,0.0000>]
  [0.71973 color rgbf <0.9765,0.5804,0.2784,0.0000>]
  [0.75000 color rgbf <0.9765,0.5725,0.2627,0.0000>]
  [0.75098 color rgbf <0.9804,0.5882,0.2784,0.0000>]
  [0.75195 color rgbf <0.9922,0.6275,0.3255,0.0000>]
  [0.75293 color rgbf <1.0000,0.6784,0.3882,0.0000>]
  [0.75391 color rgbf <1.0000,0.7333,0.4549,0.0000>]
  [0.75464 color rgbf <1.0000,0.7725,0.5059,0.0000>]
  [0.75561 color rgbf <1.0000,0.8118,0.5647,0.0000>]
  [0.75659 color rgbf <0.9882,0.8275,0.5961,0.0000>]
  [0.75757 color rgbf <0.9412,0.8118,0.6000,0.0000>]
  [0.78784 color rgbf <0.8667,0.7569,0.5647,0.0000>]
  [0.81811 color rgbf <0.7647,0.6706,0.5020,0.0000>]
  [0.84839 color rgbf <0.6431,0.5569,0.4157,0.0000>]
  [0.87891 color rgbf <0.5098,0.4314,0.3216,0.0000>]
  [0.90918 color rgbf <0.3765,0.3059,0.2235,0.0000>]
  [0.93945 color rgbf <0.2549,0.1882,0.1294,0.0000>]
  [0.96973 color rgbf <0.1529,0.0902,0.0510,0.0000>]
  [1.00000 color rgbf <0.0824,0.0235,0.0000,0.0000>]
}