In April 2020, I posted about a demonstration website I built and I finally got around to adding a number of new features to make it a bit more fun. Instead of just triangles, it can draw squares, pentagons, hexagons, heptagons, and octagons. You can spin the drawing forward or reverse, make the shapes more or less convex or concave, draw in color or black and white, and pause or resume the spinning. The RGB (Red-Green-Blue) of the last color drawn is also displayed.
This demo is best seen on a larger screen.