:orphan:
# DMPlexGetOrientedFace
Given a cell and a face, as a set of vertices, return the oriented face, as a set of vertices, in faceVertices. The orientation is such that the face normal points out of the cell 
## Synopsis
```
#include "petscdmplex.h"    
#include "petscdmlabel.h"   
PetscErrorCode DMPlexGetOrientedFace(DM dm, PetscInt cell, PetscInt faceSize, const PetscInt face[], PetscInt numCorners, PetscInt indices[], PetscInt origVertices[], PetscInt faceVertices[], PetscBool *posOriented)
```
Not Collective


## Input Parameters

- ***dm           -*** The original mesh
- ***cell         -*** The cell mesh point
- ***faceSize     -*** The number of vertices on the face
- ***face         -*** The face vertices
- ***numCorners   -*** The number of vertices on the cell
- ***indices      -*** Local numbering of face vertices in cell cone
- ***origVertices -*** Original face vertices



## Output Parameters

- ***faceVertices -*** The face vertices properly oriented
- ***posOriented  -*** `PETSC_TRUE` if the face was oriented with outward normal





## See Also
 [](ch_unstructured), `DM`, `DMPLEX`, `DMPlexGetCone()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/plex/plexsubmesh.c.html#DMPlexGetOrientedFace">src/dm/impls/plex/plexsubmesh.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/impls/plex/plexsubmesh.c)


[Index of all DMPlex routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)