// PETAL / Arrayed 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(12*y)*sin(6*atan(z/x)+1*y)-2}
  threshold 0
  max_gradient 100
  contained_by {box {<-3.5, -5, -3.5>, <3.5, 26, 3.5>}}
  texture {
    pigment {color rgb <0.8, 0.8, 0.2>}
    finish {
      ambient 0.03
      diffuse 1
      reflection 1
      specular 0.8
      phong 0.6
      brilliance 1
      }
    }
  no_shadow
  scale 3
  rotate z*60 rotate y*-6
  }

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

camera {
  location <10, 0, 15>
  angle 90.0
  look_at <0.8, 1.2, 0>
  }

light_source {<1.0, 15.0, 0> color rgb <0.6, 1, 0.4>}