// by Rafal Maj 'Raf256' http://www.raf256.com/me/ 
// in PovRAY ray-tracer 3.6 beta 1 http://www.raf256.com/3d/pov/
// SCC - Short Code Contest - http://astronomy.swin.edu.au/~pbourke/povray/scc3/submit.html
global_settings { max_trace_level 99 } 

#macro M(C,N)
  sphere{0 1 pigment{rgbt 1}
    interior{
      media {
        density { 
          mandel N // <--
          scale.5
          color_map{
            [ 0 rgb 0]
            [.4 rgb C]
            [1+C.x/3 rgb .3-C]
          }
        }
        emission.5
      }
    }
    hollow 
    translate 0.1/N + z*2 
  }
#end

#local I=0; #while(I<1)
  M( <I,0,1-I> , I*30)
#local I=I+.1; #end