petsc-master 2020-08-05
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PetscSectionSetClosurePermutation

Set the dof permutation for the closure of each cell in the section, meaning clPerm[newIndex] = oldIndex.

Synopsis

#include "petscsection.h"   
PetscErrorCode PetscSectionSetClosurePermutation(PetscSection section, PetscObject obj, PetscInt depth, IS perm)
Not Collective

Input Parameters

section - The PetscSection
obj - A PetscObject which serves as the key for this index (usually a DM)
depth - Depth of points on which to apply the given permutation
perm - Permutation of the cell dof closure

Note

The specified permutation will only be applied to points at depth whose closure size matches the length of perm. In a mixed-topology or variable-degree finite element space, this function can be called multiple times at each depth for each topology and degree.

This approach assumes that (depth, len(perm)) uniquely identifies the desired permutation; this might not be true for exotic/enriched spaces on mixed topology meshes.

See Also

PetscSectionGetClosurePermutation(), PetscSectionGetClosureIndex(), DMPlexCreateClosureIndex(), PetscCopyMode

Level

intermediate

Location

src/vec/is/section/interface/section.c

Examples

src/dm/impls/plex/tutorials/ex6.c.html

Index of all PetscSection routines
Table of Contents for all manual pages
Index of all manual pages