petsc-3.8.4 2018-03-24

DMPlexCreateRigidBody

for the default global section, create rigid body modes from coordinates

#include "petscdmplex.h"   
PetscErrorCode DMPlexCreateRigidBody(DM dm, MatNullSpace *sp)

Collective on DM

dm -the DM

sp -the null space

Note: This is necessary to take account of Dirichlet conditions on the displacements