(Press Shift on the flag to make it go a faster) Poisson discs are a way of procedurally generating many points in a space that are always farther than a specified distances between each other, making it a good way to generate objects like trees randomly but without them overlapping. There are ways to make this generate faster but I have not implemented them yet. Here is the wikipedia page about it: https://en.wikipedia.org/wiki/Supersampling#Poisson_disk