Yet more abstract images

I had some new ideas on generating pictures based on Z-order curves. For speed this time, I wrote some truly horrific but decently fast C code to render stuff. I also re-did some of my earlier Hibert curve stuff in C.

The awful code is here.

Pictures below. They look best zoomed all the way in, and the jumbo ones make good wallpapers if set to ‘center’ (no scaling), even on big multi-monitor setups.