Function split_hex_into_tets

python/pymesh/meshutils/generate_box_mesh.py:285–310

Convert a hex to 24 tets. Algorithm: Each hex is split into 6 tets. The resulting tet mesh does not symmetric connectivities. Corner ordering: 7 _______ 6 /: /| z 4 /______/ | | | : 5| | | y | :... |.| | /

(corners)

        return subcell_corners

def split_hex_into_tets(corners):
    """ Convert a hex to 24 tets.
    Algorithm: Each hex is split into 6 tets.  The resulting tet mesh does not
    symmetric connectivities.

    Corner ordering:
         7 _______ 6
          /:     /|        z
       4 /______/ |        |
        |  :   5| |        |  y
        |  :... |.|        | /
        | . 3   | /2       |/
        |_______|/         /-------x
        0        1

    """
    vertices = np.array(corners)
    tets = np.array([
        [0, 3, 7, 6],
        [0, 3, 6, 2],
        [0, 2, 6, 1],
        [5, 0, 6, 1],
        [5, 0, 4, 6],
        [6, 0, 4, 7],
        ])
    return vertices, tets

def split_hex_into_tets_symmetrically(corners):
    """ Convert a hex to 24 tets.