petsc-3.7.7 2017-09-25
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get the tree that describes the hierarchy of non-conforming mesh points. Collective on dm


#include "petscdmplex.h"   
PetscErrorCode DMPlexGetTree(DM dm, PetscSection *parentSection, PetscInt *parents[], PetscInt *childIDs[], PetscSection *childSection, PetscInt *children[])

Input Parameters

dm -the DMPlex object

Output Parameters

parentSection - a section describing the tree: a point has a parent if it has 1 dof in the section; the section offset indexes the parent and childID list
parents - a list of the point parents
childIDs - identifies the relationship of the child point to the parent point; if there is a reference tree, then the child corresponds to the point in the reference tree with index childID
childSection - the inverse of the parent section
children - a list of the point children

See Also

DMPlexSetTree(), DMPlexSetReferenceTree(), DMPlexSetAnchors(), DMPlexGetTreeParent(), DMPlexGetTreeChildren()

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