// PETAL / Blue Petals '03.12
// 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 {
  function {x*x+z*z-9*sin(6*y*y-(x*x+z*z))*pow(0.3+0.7*abs(
    sin(6*atan(z/(x+0.00001))+10*y+0.5*(x*x+z*z))),100)*sin(pi*y)}
  threshold 0
  max_gradient 300
  contained_by {box {<-3, 0, -3>, <3, 3, 3>}}
  texture {
    pigment {color rgbt <1, 0.8, 0.4, 0.9>}
    finish {
      ambient 0
      diffuse 1
      reflection 0.7
      specular 0.8
      phong 0.5
      brilliance 1
      }
    }
  no_shadow
  scale 3
  }

background {color rgb <0, 0.1, 0.3>}

camera {
  location <0, 15, 5>
  angle 100.0
  look_at <0, 0, 0>
  }

light_source {<20, 10, 30> color rgb <1, 1, 1>}