PxDeformableVolumeMaterialModel# Defined in include/PxDeformableVolumeMaterial.h struct PxDeformableVolumeMaterialModel# Public Types enum Enum# Values: enumerator eCO_ROTATIONAL# Default model. Well suited for high stiffness. Does need tetrahedra with good shapes (no extreme slivers) in the rest pose. enumerator eNEO_HOOKEAN# Well suited for lower stiffness. Robust to any tetrahedron shape.