[petsc-users] DMPlex tetrahedra facets orientation

[Nicolas Barral]

Hi all,

Can I make any assumption on the orientation of triangular facets in a 
tetrahedral plex ? I need the inward facet normals. Do I need to use 
DMPlexGetOrientedFace or can I rely on either the tet vertices ordering, 
or the faces ordering ? Could DMPlexGetRawFaces_Internal be enough ?

Alternatively, is there a function that computes the normals - without 
bringing out the big guns ?

Thanks

--
Nicolas