// MOD / Ribs '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 <-0.8, 0.3, -1>
  look_at <-0.4, 0.6, 0>
  angle 60
  }

light_source {<50, 90, -75> color rgb <1, 1, 1>}

isosurface {
  function {(pow(pow(pow(x+0.1*pow(z-2,2),2)+pow(y-2/3,2)/4*9,0.5)-1,2)
            +pow(mod(z+100,0.5)-0.25,2)-0.01*(y-0.3))*(pow(x+0.1*pow(z-2,2),2)/2
            +pow(y-4/3,2)+pow(mod(z+100,0.5)-0.25,2)/9-0.04)-0.004}
  threshold 0
  max_gradient 50
  contained_by {box {<-2, -0.1, -1.5>, <1.1, 1.5, 7>}}
  //open
  texture {
    pigment {color rgbt <1, 0, 0, 0.8>}
    finish {
      ambient 0.5
      diffuse 1
      reflection 1
      specular 1
      phong 1
      brilliance 1
      }
    }
  no_shadow
  }

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