// RINGS1 / lpring11 '06.09
// by Tsutomu HIGO  URL:http://www.asahi-net.or.jp/~nj2t-hg/

#version 3.6;
global_settings {
  max_trace_level 9
  assumed_gamma 2.2
  }

camera {
  location <-50, 60, -60>
  look_at <-30, 18, 0>
  angle 90
  }

light_source {<50, 60, -750> color rgb <0.8, 0.8, 1>}

union {
  #declare Imax=240;
  #declare I=Imax;
  #while (I>0)
    disc {
      <0, 0, 0> z, 100, 99
      translate <0, 150*sin(-I/80), 10*I>
      }
  #declare I=I-1; #end
  texture {
    pigment {color rgbt <1, 1, 1, 0.9999>}
    finish {
      ambient 0.3
      diffuse 1
      reflection 1
      specular 0.8
      phong 0.5
      brilliance 1
      }
    }
  no_shadow
  }

background {color rgb <0.1, 0.2, 0.3>}