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 on sym
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#
PetscSectionSymLabelSetStratum()
, PetscSectionSymCreate()
, PetscSectionSetSym()
, PetscSectionGetPointSyms()
, PetscSectionSymCreateLabel()
Level#
developer
Location#
Index of all DMLabel routines
Table of Contents for all manual pages
Index of all manual pages