height_field {
   pattern 200,200 {
      hf_gray_16
      wrinkles
      scale 0.1
      color_map {
         [0  , rgb 0]
         [0.4, rgb 0.4]
      }
   }
   translate -0.5
   rotate <-90,0,0>
   scale <20,20,2>
   pigment {    
      wrinkles
      scale 0.1
      color_map {
         [0  , rgb 0.5]
         [0.4, rgb 0.5]
         [0.4, rgb 1]
      }

What transformations do I need put here, to make the pigment exactly match 
the heightfield?
         
   }
}

Ingo

-- 
Photography: http://members.home.nl/ingoogni/
Pov-Ray    : http://members.home.nl/seed7/

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