SnapPy is a package for studying the topology and geometry of 3-manifolds, with a focus on hyperbolic structures. It is based on the SnapPea kernel written by Jeff Weeks.
Faces are colored by index mapping to hue, and when the camera is inside of a horosphere (or "Margulis tube"), we see its meridian and longitude. This has a slight slowdown, from an average of 26.2ms to an average of 27.6ms per frame in the performance test. (Although the performance test spends a lot of time inside of the horosphere, which is where this change is most felt.)
Faces are colored by index mapping to hue, and when the camera is inside of a horosphere (or "Margulis tube"), we see its meridian and longitude. This has a slight slowdown, from an average of 26.2ms to an average of 27.6ms per frame in the performance test. (Although the performance test spends a lot of time inside of the horosphere, which is where this change is most felt.)