GhostDofConstraint Class Reference

Inheritance diagram for GhostDofConstraint:

Public Member Functions
	GhostDofConstraint (System &sys)
void	constrain () override

Private Attributes
System &	_sys

Detailed Description

Definition at line 50 of file dof_map_test.C.

Constructor & Destructor Documentation

GhostDofConstraint()

GhostDofConstraint::GhostDofConstraint ( System &  sys )

inline

Definition at line 58 of file dof_map_test.C.

: Constraint(), _sys(sys) {}

Member Function Documentation

constrain()

void GhostDofConstraint::constrain ( )

inlineoverride

Definition at line 60 of file dof_map_test.C.

  {
    const unsigned int sys_num = _sys.number();
 
    // Constrain the interface DOF on node 3 by the distant DOF on node 0.
    // On the processor owning element 3, both DOFs are nonlocal, but only
    // node 3 is directly needed by the local element.
    const dof_id_type constrained_dof =
      _sys.get_mesh().node_ref(3).dof_number(sys_num, 0, 0);
    const dof_id_type dependency_dof =
      _sys.get_mesh().node_ref(0).dof_number(sys_num, 0, 0);
 
    // This represents constrained_dof = dependency_dof.
    DofConstraintRow constraint_row;
    constraint_row[dependency_dof] = 1.;
    _sys.get_dof_map().add_constraint_row(constrained_dof, constraint_row);
  }

References _sys, libMesh::DofMap::add_constraint_row(), libMesh::DofObject::dof_number(), libMesh::System::get_dof_map(), libMesh::System::get_mesh(), libMesh::MeshBase::node_ref(), and libMesh::System::number().

Member Data Documentation

_sys

System& GhostDofConstraint::_sys

private

Definition at line 54 of file dof_map_test.C.

Referenced by constrain().

---

The documentation for this class was generated from the following file:

• tests/base/dof_map_test.C