petsc-3.12.5 2020-03-29
DMPlexGetConeRecursive
Expand each given point into its cone points and do that recursively until we end up just with vertices (DAG points of depth 0, i.e. without cones).
Synopsis
#include "petscdmplex.h"
PetscErrorCode DMPlexGetConeRecursive(DM dm, IS points, PetscInt *depth, IS *expandedPoints[], PetscSection *sections[])
Not collective
Input Parameters
| dm | - The DMPlex
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| points | - The IS of points, which must lie in the chart set with DMPlexSetChart()
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Output Parameter
| depth | - (optional) Size of the output arrays, equal to DMPlex depth, returned by DMPlexGetDepth()
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| expandedPoints | - (optional) An array of index sets with recursively expanded cones
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| sections | - (optional) An array of sections which describe mappings from points to their cone points
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Notes
Like DMPlexGetConeTuple() but recursive.
Array expandedPoints has size equal to depth. Each expandedPoints[d] contains DAG points with maximum depth d, recursively cone-wise expanded from the input points.
For example, for d=0 it contains only vertices, for d=1 it can contain vertices and edges, etc.
Array section has size equal to depth. Each PetscSection sections[d] realizes mapping from expandedPoints[d+1] (section points) to expandedPoints[d] (section dofs) as follows
(1) DAG points in expandedPoints[d+1] with depth d+1 to their cone points in expandedPoints[d];
(2) DAG points in expandedPoints[d+1] with depth in [0,d] to the same points in expandedPoints[d].
See Also
DMPlexCreate(), DMPlexGetCone(), DMPlexGetConeTuple(), DMPlexRestoreConeRecursive(), DMPlexGetConeRecursiveVertices(), DMPlexGetDepth()
Level
advanced
Location
src/dm/impls/plex/plex.c
Index of all DMPLEX routines
Table of Contents for all manual pages
Index of all manual pages