This operator retrieves the index of the tetrahedron adjacent to the given face of an existing tetrahedron.
-1 if the primitive is not a tetrahedron or doesn’t have an adjacent tetrahedron.
Tetrahedron Face Index can be used to get the vertex indices of each face
of a tetrahedron.
Disk file to read for the geometry. Can be
op:/obj/object/soppath to read live SOP geometry.
The primitive number.
The face on the tetrahedron. Face 0 is the triangle that doesn’t have vertex 0.