I wrote a lib to generate a signed distance field from a 3d mesh and visualize it (+ voxels / raymarch view). Useful for sdf based collisions and more, compatible with most math libraries and game engines (to avoid another bevy-rapier situation). Still a lot to do but I released v0.1.0 yesterday!
https://crates.io/crates/mesh_to_sdf
https://crates.io/crates/mesh_to_sdf_client
https://github.com/Azkellas/mesh_to_sdf