19 location <0, 0, -r/sin(radians(15))>
23 light_source { <-500, 500, -700> White }
25 #declare xring = intersection {
30 box { <-0.25, -r2, -r2>, <0.25, r2, r2> }
33 #declare yring = intersection {
38 box { <-r2, -0.25, -r2>, <r2, 0.25, r2> }
41 #declare zring = intersection {
46 box { <-r2, -r2, -0.25>, <r2, r2, 0.25> }
54 box { <0, 0, -r2>, <r2, r2, r2> }
55 pigment { rgbf < 0.5, 0.75, 0.5, 0.6 > }
60 pigment { rgb < 0.75, 0.75, 1.0 > }
70 normal { bumps 0.1 scale 0.25 }
73 rotate <xr*360/32, 0, 0>
74 rotate <0, yr*360/32, 0>