Rapier for 2D granular material simulation

[landersson]

Hi, I'm looking for a library/code to do real-time 2D granular material simulation (think sand, gravel, dirt, soil) and its interaction with dynamic, solid 2D objects. I know it's been done using box2d by simulating sand etc as a large number (thousands I guess) of small, irregular convex polygons.

My questions is, would rapier be suitable for this kind of application?

[ThierryBerger]

It's possible, yes, but the exact amount possible to simulate will highly depend on your hardware and constraints (some simulations can be pre-simulated, highly reducing the performance constraints). GPU optimizations can be done but not supported "out of the box" without other crates and some effort.

I invite you to prototype your target scenario and see how it perform :)