// MOD / Grid '03.06
// By Tsutomu HIGO  URL: http://www.asahi-net.or.jp/~nj2t-hg/

#version 3.5;
global_settings {
  max_trace_level 2
  assumed_gamma 2.2
  }

camera {
  location <-16, 20, -50>
  look_at <0, -2, 0>
  angle 40
  }

light_source {<-50, 150, -75> color rgb <1, 1, 1>}

isosurface {
  function {(pow(mod(x+30,6)-3,2)+pow(mod(y+30,6)-3,2)+pow(mod(z+30,6)-3,2)-2)
            *(pow(mod(y+30,6)-3,2)+pow(mod(z+30,6)-3,2)-0.09)
            *(pow(mod(x+30,6)-3,2)+pow(mod(y+30,6)-3,2)-0.09)
            *(pow(mod(x+30,6)-3,2)+pow(mod(z+30,6)-3,2)-0.09)-0.09}
  threshold 0
  max_gradient 50000
  contained_by {box {<-12, -12, -12>, <12, 12, 12>}}
  texture {
    pigment {color rgb <1, 0.9, 0.8>}
    finish {
      ambient 0.6
      diffuse 0.3
      reflection 0
      specular 1
      phong 1
      brilliance 1
      }
    }
  rotate <0, 0, 0>
  no_shadow
  }