Moebius sponges

[xenodreambuie]

I've seen pics of Kleinian groups with spheres rendered, and with the larger spheres removed, and I've seen various 3D mappings of Kleinian groups in Incendia, and of course I've seen Mandelboxes. But I had not yet seen a really good sponge of sphere inversions, until I found the right combinations of Maskit parameters combined with rotation around the X axis. This pic uses Maskit parameters p,q,r = (1,2,0), with 90 degree rotation around X each iteration. It also works in cross-eyed stereo, if you tilt your head to the right a bit (I didn't think about stereo until after rendering.) It's done in XenoDream 2.3.