here’s a couple of my animations on the http://urtvforums.org site you may enjoy:

http://urtvforums.org/space_dredger.php

http://urtvforums.org/bounce.php

The second uses a bouncing technique and reminded me of my first animation of a bouncing ball. It was in 1966! I was attending Asheville-Buncombe Tech at the time, majoring in Electronics Technology. We had a Heathkit ANALOG computer there. I programmed it to simulate a bouncing ball using an oscilloscope as a display advice—42 years ago! It’s easier today but was much more thrilling back then. :)