//A Type 5 Steiner surface
//by Adam Coffman

camera {
    location  <-2.71, 2.5, -2.7>
    look_at   <0, 0, 0>
      }
#include "golds.inc"
#include "colors.inc"
  plane { <3,0,0>, 2.5 pigment{rgb<0.2,0.2,0.2>} finish{reflection 0.8 }}
  plane { <0,0,3>, 2.5 pigment{rgb<0.2,0.2,0.2>} finish{reflection 0.8 }}
  plane { y, 21 pigment{White}}
  plane { y, -1.25
    texture {
      pigment {
        checker
        color rgb<0.7, 0.7, 1>
        color rgb<0.4, 1, 0.5>
      }
      finish {
        diffuse 0.4
        ambient 0.2
      }
    }
  }           
  poly { 4 <
  0, 0, 0, 0, 0, 0, 0, 1, -2, 1, 0, 0, 0, 0, 0, 
  0, 0, 0, 0, 0, 1, 0, 0, 1, 0, -1, 0, 0, 0, 0, 
  0, 0, 0, 0, 0>sturm texture{T01}    
  bounded_by { box { <-1,-2,-2>, <1,2,2> } }
    clipped_by { bounded_by }           
    }
  light_source{<0,20,0> White} 
  light_source{<-40,0,0> White}
  light_source{<0,0,-40> White}