Been working on my path tracer program again for a little artistic outlet 😃 here’s a rendering of a limit set from a kleinian group (acting on the boundary of hyperbolic 4-space) made of colored glass! The entire material is homogeneous, with the qualitative differences coming from internal reflections and subsurface scattering amongst the many tiny spheres.

Distance estimation to the limit set is via Jos Leys’ “escape time algorithm”