// MULTIPLE /  Multipled Colonnade '05.05
// By Tsutomu HIGO  URL: http://www.asahi-net.or.jp/~nj2t-hg/

#version 3.5;
global_settings {
  max_trace_level 7
  assumed_gamma 2.2
  }

isosurface {
  function {(y-5)*(x*x+z*z-1)}
  threshold 0
  max_gradient 100
  contained_by {box {<-5, -2.5, -20>, <5, 15, 20>}}
  texture {
    pigment {color rgbt <1, 0.9, 0.7, 0.9>}
    finish {
      ambient 0
      diffuse 1
      reflection 0.6
      specular 0.2
      phong 0.2
      brilliance 1
      }
    }
  no_shadow
  scale 3
  }

background {color rgb <0, 0.1, 0.2>}

camera {
  location <10, -3, 10>
  angle 120.0
  look_at <5, 5, 0>
  }

light_source { <0, 5, 0> color rgb <1, 0.7, 0.5> }