Animation without using PI

Happy Pi Day! To celebrate I attempt to compute the digits of Pi using the “collisions” method, thanks to 3Blue1Brown for the idea!
Paper by G. Galperin on counting collisions between two billiard balls to estimate pi
Wikipedia page on elastic collisions
Wikipedia page on Euler method
GitHub repo to Pi Day (2019) coding challenges
3Blue1Brown's playlist on estimating Pi from block collisions
Numberphile's video on computing pi from bouncing balls
Archive of the member/patron exclusive Pi Day prep livestream
Live Stream with discussion of Pi Day Collisions code
by Mathieu Blanchette
by Jason Heglund
The Showcase is collection of projects created by viewers like you!
Have you made something? Please share your work!
Suggested by the video you're watching