// cpt-city: gacruxa/mccahon/mccahon-13 (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_13 =
color_map {
  [0.00000 color rgbf <0.8902,0.5333,0.2549,0.0000>]
  [0.29468 color rgbf <0.6510,0.5961,0.4118,0.0000>]
  [0.30298 color rgbf <0.8902,0.5333,0.2549,0.0000>]
  [0.34985 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.49853 color rgbf <0.3176,0.2863,0.1412,0.0000>]
  [0.50147 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.59790 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.60059 color rgbf <0.9843,0.6667,0.3176,1.0000>]
  [0.65064 color rgbf <0.8863,0.4588,0.1608,1.0000>]
  [0.65576 color rgbf <0.8784,0.4392,0.1490,0.0000>]
  [1.00000 color rgbf <0.8784,0.4392,0.1490,0.0200>]
}