// CILIA / Trap '04.02
// By Tsutomu HIGO  URL: http://www.asahi-net.or.jp/~nj2t-hg/

#version 3.5;
global_settings {
  max_trace_level 5
  assumed_gamma 2.2
  }

isosurface {
// pow(x*x+y*y+z*z+R*R-r*r,2)-pow(2*R,2)*(x*x+z*z) = 0   ----Torus
  function {pow(x*x+y*y+z*z+3*3-pow((0.8+1.2*pow(
    sin(18*atan(y/(abs(sqrt(x*x+z*z)-3)+0.00001)))
    *sin(36*atan(z/(x+ 0.0001))),8)),2),2)
    -2*3*2*3*(x*x+z*z)}
  threshold 0
  max_gradient 3000
  contained_by {box {<-5, -2, -5>, <5, 2, 5>}} 
  texture {
    pigment {color rgb <0.8, 1, 0.7>}
    finish {
      ambient 0.1
      diffuse 0.8
      reflection 1
      specular 0.8
      phong 0.8
      brilliance 2
      }
    }
  no_shadow
  rotate z*-20 rotate y*15
  }

camera {
  location <0, 3.3, -1.8>
  angle 100.0
  look_at <-0.3, -1, 0>
  }

light_source {
  <15, 30, -15>
  color rgb <0.8, 0.6, 0.6>
  }