Greg Egan on Nostr: It’s a long time since I wrote that applet, but skimming the source code, there’s ...

It’s a long time since I wrote that applet, but skimming the source code, there’s a list of disjoint convex polygons into which the original faces are dissected, omitting any that don’t lie on the boundary of the polyhedron as a subset of R^3, and after sorting every such polygon is rendered with no further steps. So, you certainly couldn’t just throw the original faces of a non-convex polyhedron into that list and expect the rendering to work.