// Chaos1 / The Rosslor Attractor  '00.05
// By Tsutomu HIGO  E-mail: nj2t-hg@asahi-net.or.jp

#version 3.1;
#global_settings { assumed_gamma 2.2 }

camera {
  location <100, -200, -300>
  look_at <-1.2, -1.5, 0>
  angle 5
  }

#macro Chaos ( Xo, Yo, Zo, H, A, B, C, D, E, Nend )
  #declare X = Xo;
  #declare Y = Yo;
  #declare Z = Zo;
  #declare N = 0;  #while (N < Nend)
    #declare X1 = X + H*A*(-Y-Z);
    #declare Y1 = Y + H*(X+B*Y);
    #declare Z1 = Z + H*(E*X*Z+D*X-C*Z);
    cylinder {
      <X, Y, Z> <X1, Y1, Z1> 0.05
      pigment { color rgb < N/Nend, N/Nend, 1-N/Nend > }
      finish { reflection 0.5 ambient 0.3 phong 1 diffuse 1 brilliance 1}
      no_shadow
      }
    #declare X = X1;
    #declare Y = Y1;
    #declare Z = Z1;
  #declare N = N+1;  #end
#end

#declare Rosslor = union { Chaos ( 0.1, 0, -0.1, 0.05, 1, 0.36, 4.5, 0.4, 1, 10000 ) translate x*5.5 }
object { Rosslor rotate y*120 }
object { Rosslor rotate y*240 }
object { Rosslor rotate y*0 }

light_source {
  <700, 1000, -3000>
  color rgb <0.8,1.5,0.8>
  }