[cs702]

Spherical sheep, to be precise. Read the OP for details.

Probably related to https://en.wikipedia.org/wiki/Spherical_cow

:-P

[caseyy]

If you want to simulate the behavior of a large crowd of people, 2D fluid simulation is accurate enough for most purposes. I’ve used it to simulate a crowd in a video game. One could say it’s spherical people.