// You are sitting inside a tetrahedron looking at one of the verticies through
// a torus. The tetrahedron has one red, one yellow, one blue and one white
// wall.
// All four walls and the surface of the torus are reasonably reflective.
//
// No tricks really... Just a couple ugly short cuts to save a few characters.

light_source{0 rgb x+y+z}                                                     

#macro p(n,c) plane{n,-0.22 pigment{rgb c} finish{reflection{.7}}} #end         

p(z,x+y+z)
p(<0,-.94,-.33>,x)
p(<.82,.47,-.33>,x+y)
p(<-.82,.47,-.33>,z)

torus{0.3 0.26 pigment{rgb x+y+z} finish{reflection{.7}} rotate x*90}