gustaf.utils.connec.tet_to_tri

gustaf.utils.connec.tet_to_tri(volumes)

Computes tri faces based on following index scheme.

Tetrahedron

Ref: (node_ind), face_ind

              (0)
             _/|
           _/ 1|
    (1)  _/____| (3)
       _/|    /|
     _/ 0| 2/ 3|
    /____|/____|
  (0)   (2)    (0)

face_ind | node_ind
---------|----------
0        | 0 2 1
1        | 1 3 0
2        | 2 3 1
3        | 3 2 0

Parameters:

volumes ((n, 4) np.ndarray)

Returns:

faces

Return type:

(n * 4, 3) np.ndarray