When I saw this, I immediately had flashbacks to a little project I did for my CS course when I was an undergrad! We were all assigned a computer graphics algorithm and were tasked to build an animation explaining how it works.

This was nearly eight years ago, but I managed to find it this morning and uploaded it to YouTube.

Here was the resulting animation: https://youtu.be/FHrIQOWeerg

I remember I used Processing to build it, and it took so long to animate as I had to export it frame-by-frame. Fun days!