The Tets operator allows you to convert particle shape meshes into tets.
SDF radius: the cell radius of the signed distance field used to create the tet meshes.
Particle per tet: when enabled, individual tets will be split out into new, separate particles.
Base UVW coordinates are box-projected coordinates that are assigned prior to any surface inheritance calculations.
UVWs: the outer surface of the generated tets will inherit UVWs from the source mesh.
Material IDs: the outer surface of the generated tets will inherit Material IDs from the source mesh.