// STEP / The Complex World '05.10
// By Tsutomu HIGO  URL: http://www.asahi-net.or.jp/~nj2t-hg/

#version 3.6;
global_settings {
  max_trace_level 4
  assumed_gamma 2.2
  }

camera {
  location <-10, 130, -150>
  look_at <0, 0, -54>
  angle 80
  }

light_source { <30, 2000, 1000> color rgb <0.5, 0.5, 1> }

union {
  isosurface {
    function {
      y-10*pow(sin(int(sqrt(x*x+z*z)/3)/pi/2),10)
      *int(0.99*sin(24*atan(z/x))+1)
      *int(0.99*cos(sqrt(x*x+z*z)*pi/1.5-pi/2)+1)
      }
    threshold 0
    max_gradient 150
    contained_by { box { <-50, -0.1, -50>, <50, 20.1, 50> } }
    }
  plane { y, 0 }
  texture {
    pigment { color rgb <1, 1, 1> }
    finish {
      ambient 0.3
      diffuse 1
      reflection 0.5
      specular 0.8
      phong 0.5
      brilliance 1
      }
    }
  scale 3
  }