https://www.gorillasun.de/blog/particle-system-optimization-grid-lookup-spatial-hashing/
Optimizing Particle Systems with a Grid Lookup and Spatial Hashing
Jul 26, 2023 - In this post we have a look at a method with which we can greatly improve a collision detection system. Using a lookup grid we can greatly reduce the number of...
particle systemsgrid lookupoptimizingspatialhashing
https://nra.org.uk/results/results-classifications/grids/
GRID Lookup - NRA
grid lookupnra