PetscSectionSymLabelGetStratum

get the symmetries for the orientations of a stratum

Synopsis

#include "petscdmlabel.h"   
#include "petscsection.h"   
PetscErrorCode PetscSectionSymLabelGetStratum(PetscSectionSym sym, PetscInt stratum, PetscInt *size, PetscInt *minOrient, PetscInt *maxOrient, const PetscInt ***perms, const PetscScalar ***rots)

Logically Collective

Input Parameters

• sym - the section symmetries

• stratum - the stratum value in the label that we are assigning symmetries for

Output Parameters

• size - the number of dofs for points in the stratum of the label

• minOrient - the smallest orientation for a point in this stratum

• maxOrient - one greater than the largest orientation for a ppoint in this stratum (i.e., orientations are in the range [minOrient, maxOrient))

• perms - NULL if there are no permutations, or (maxOrient - minOrient) permutations, one for each orientation. A NULL permutation is the identity

• rots - NULL if there are no rotations, or (maxOrient - minOrient) sets of rotations, one for each orientation. A NULL set of orientations is the identity

See Also

DMLabel, DM, PetscSectionSymLabelSetStratum(), PetscSectionSymCreate(), PetscSectionSetSym(), PetscSectionGetPointSyms(), PetscSectionSymCreateLabel()

Level

developer

Location

src/dm/label/dmlabel.c

---

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