// CHAOS / Henon Ver.0.1 '00.04
// By Tsutomu HIGO  E-mail: nj2t-hg@asahi-net.or.jp

#version 3.1;
global_settings {
  max_trace_level 30
  assumed_gamma 2.2
  }

camera {
  location <-360,240,20>
  angle 104
  look_at <-40, -190, 0>
  }

#declare Iend=2000;
#declare An=50;
#declare X=0.1;
#declare Y=0.1;
#declare Z=0.1;
#declare A=1.5; #while (A<2.5)
#declare I=0; #while (I<Iend)
  #declare Tx=(A*X-X*X*X+Y);
  #declare Ty=(-A*3/8+1.1891)*X;
  #declare Tz=A*X*Y;
  #declare X=Tx;
  #declare Y=Ty;
  #declare Z=Tz;
  sphere { <200*X, 200*Y, 200*Z> 2
    pigment {color rgb <A-1.5,1-I/Iend,I/Iend-(A-1.5)>}//<0.8*pow(2.5-A,2),0.8*pow(1-2*abs(A-2),2),0.4+0.6*pow(A-1.5,2)> }
    finish { reflection 3 ambient 0.6 phong 2 brilliance 1 diffuse 2 }
    rotate y*235
    no_shadow
    }
#declare I=I+1; #end
#declare A=A+1/An; #end

background { color rgb <0.1,0.05,0.2> }