rings1.pov

#version 3.7;
#include "colors.inc"
#include "metals.inc"

global_settings { 
    assumed_gamma 1.0 
}

background { 
    color rgb <0, 0, 0> 
}

camera {
    location <0.0, 20.0, -100>
    direction 1.5 * z
    right x*image_width/image_height
    look_at <0,0,0>
}

light_source {
    <0,0,0>
    color rgb <1, 1, 1>
    translate <26, 26, 26>
}

#declare initRmajor = 2.0;
#declare Rmajor = initRmajor;
#declare Rminor = 0.5;
#declare ringCount = 0;

#while (ringCount < 20)
    #declare modValue = mod(ringCount, 3);
    torus {
        Rmajor, Rminor
        texture { 
            pigment { color rgb<0.5,0.5,0.5> }
            finish { phong 1 }
        }    
        #switch(modValue)
        #case(0)
            rotate <clock * 360, 0, 0>
            #break
        #case(1)
            rotate <0, clock * 360, 0>
            #break
        #case(2)
            rotate <0, 0, clock * 360>
            #break
        #end
          
    }
    #declare Rmajor = Rmajor + initRmajor;
    #declare ringCount = ringCount + 1;
#end