Function phys_PxCreatePlane 

pub unsafe extern "C" fn phys_PxCreatePlane(
    sdk: *mut PxPhysics,
    plane: *const PxPlane,
    material: *mut PxMaterial,
) -> *mut PxRigidStatic

create a plane actor. The plane equation is n.x + d = 0

a new static actor, or NULL if it could not be constructed