// RINGS / 71-02 '06.03
// by Tsutomu HIGO  URL:http://www.asahi-net.or.jp/~nj2t-hg/

#version 3.6;
global_settings {
  max_trace_level 3
  assumed_gamma 2.2
  }

camera {
  location <300, 10, -150>
  look_at <0, -2, 0>
  angle 36
  }

light_source {<50, 90, -75> color rgb <0.8, 0.8, 0.8>}

union {
  #declare Imax=10000;
  #declare I=Imax;
  #while (I>0)
    disc {
      <0, 0, 0> z, 100, 99
      scale pow(0.99, Imax-I)
      rotate x*(I*2)
      }
  #declare I=I-1; #end
  texture {
    pigment {color rgb <1, 1, 1>}
    finish {
      ambient 0.3
      diffuse 1
      reflection 1
      specular 0.8
      phong 0.5
      brilliance 1
      }
    }
  no_shadow
  rotate x*60
  }

background {color rgb <0.02, 0.05, 0.08>}