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

#version 3.5;
global_settings {
  max_trace_level 4
  assumed_gamma 2.2
  }

camera {
  location <0, 0.1, -1>
  look_at <0.01, 0.32, 0>
  angle 41
  }

light_source {<50, 90, -75> color rgb <0.8, 0.8, 0.8>}

isosurface {
  function {(pow(pow(4*x*x*(1+z)+y*y,0.5)-1,2)+pow(2*mod(z+100,0.5)-0.25,2)
            -0.0064/(pow(2*y,2)+1))*(y-0.05)-0.0016}
  threshold 0
  max_gradient 10
  contained_by {box {<-0.8, 0, -0.2>, <0.8, 1.2, 20>}}
  open
  texture {
    pigment {color rgbt <0.7, 0.9, 1, 0.7>}
    finish {
      ambient 0
      diffuse 1
      reflection 1
      specular 0.8
      phong 1
      brilliance 1
      }
    }
  no_shadow
  }

background {color rgb <0.02, 0, 0.2>}