https://github.com/georust/rstar https://github.com/georust/rstar Banger library. Not sure how it compares to, say, kd-tree in terms of performance but it allo

https://github.com/georust/rstar https://github.com/georust/rstar Banger library. Not sure how it compares to, say, kd-tree in terms of performance but it allows for plenty of primitives.