Tesscross 1
This animation is part of my effort to rotate a "tesscross" (what I call an unfolded tesseract). The rotation shown here is the same as rotation shown along one axis in the tesseract rotation animations.
This is obviously an early effort (a POV-Ray version is coming).
The model, mainly a Tesscross class, is written in Python. The Python Image Library (PIL) provided the PNG capability, and (as usual) the images were stitched into an MP4 by ffmpeg.