Namespaces
namespace	Assembler

Classes
struct	ComparisonHelper

Functions
template<typename FaceIterator , typename number >
void	set_periodicity_constraints (const FaceIterator &face_1, const std_cxx20::type_identity_t< FaceIterator > &face_2, const FullMatrix< double > &transformation, AffineConstraints< number > &affine_constraints, const ComponentMask &component_mask, const unsigned char combined_orientation, const number periodicity_factor, const unsigned int level=numbers::invalid_unsigned_int)

template<int dim, int spacedim>
std::vector< unsigned char >	get_local_component_association (const FiniteElement< dim, spacedim > &fe, const ComponentMask &component_mask)

template<int dim, int spacedim>
void	get_component_association (const DoFHandler< dim, spacedim > &dof_handler, const ComponentMask &component_mask, std::vector< unsigned char > &dofs_by_component, const unsigned int mg_level=numbers::invalid_unsigned_int)

template<int dim, int spacedim>
void	get_block_association (const DoFHandler< dim, spacedim > &dof, std::vector< unsigned char > &dofs_by_block)

template<int dim, int spacedim>
void	extract_constant_modes (const DoFHandler< dim, spacedim > &dof_handler, const ComponentMask &component_mask, const unsigned int mg_level, std::vector< std::vector< bool > > &constant_modes)

template<int dim, int spacedim>
void	resolve_components (const FiniteElement< dim, spacedim > &fe, const std::vector< unsigned char > &dofs_by_component, const std::vector< unsigned int > &target_component, const bool only_once, std::vector< types::global_dof_index > &dofs_per_component, unsigned int &component)

template<int dim, int spacedim>
void	resolve_components (const hp::FECollection< dim, spacedim > &fe_collection, const std::vector< unsigned char > &dofs_by_component, const std::vector< unsigned int > &target_component, const bool only_once, std::vector< types::global_dof_index > &dofs_per_component, unsigned int &component)

template<typename number , int spacedim>
void	make_hp_hanging_node_constraints (const DoFHandler< 1, spacedim > &, AffineConstraints< number > &)

template<typename number , int spacedim>
void	make_hanging_node_constraints_nedelec (const ::DoFHandler< 1, spacedim > &, AffineConstraints< number > &, std::integral_constant< int, 1 >)

template<typename number , int spacedim>
void	make_oldstyle_hanging_node_constraints (const DoFHandler< 1, spacedim > &, AffineConstraints< number > &, std::integral_constant< int, 1 >)

template<int dim_, int spacedim, typename number >
void	make_oldstyle_hanging_node_constraints (const DoFHandler< dim_, spacedim > &dof_handler, AffineConstraints< number > &constraints, std::integral_constant< int, 2 >)

template<int dim_, int spacedim, typename number >
void	make_oldstyle_hanging_node_constraints (const DoFHandler< dim_, spacedim > &dof_handler, AffineConstraints< number > &constraints, std::integral_constant< int, 3 >)

template<int dim_, int spacedim, typename number >
void	make_hanging_node_constraints_nedelec (const DoFHandler< dim_, spacedim > &dof_handler, AffineConstraints< number > &constraints, std::integral_constant< int, 2 >)

template<int dim_, int spacedim, typename number >
void	make_hanging_node_constraints_nedelec (const DoFHandler< dim_, spacedim > &dof_handler, AffineConstraints< number > &constraints, std::integral_constant< int, 3 >)

template<int dim, int spacedim, typename number >
void	make_hp_hanging_node_constraints (const DoFHandler< dim, spacedim > &dof_handler, AffineConstraints< number > &constraints)

Function Documentation

◆ set_periodicity_constraints()

template<typename FaceIterator , typename number >

void DoFTools::internal::set_periodicity_constraints	(	const FaceIterator &	face_1,
		const std_cxx20::type_identity_t< FaceIterator > &	face_2,
		const FullMatrix< double > &	transformation,
		AffineConstraints< number > &	affine_constraints,
		const ComponentMask &	component_mask,
		const unsigned char	combined_orientation,
		const number	periodicity_factor,
		const unsigned int	level = numbers::invalid_unsigned_int )

This function is internally used in make_periodicity_constraints(). Enter constraints for periodicity into the given AffineConstraints object.

This function works both on 1) an active mesh (level == numbers::invalid_unsigned_int) and on 2) multigrid levels.

In the case of an active mesh, this function is called when at least one of the two face iterators corresponds to an active object without further children. Furthermore, face_1 is supposed to be active.

The matrix transformation maps degrees of freedom from one face to another. If the DoFs on the two faces are supposed to match exactly, then the matrix so provided will be the identity matrix. if face 2 is once refined from face 1, then the matrix needs to be the interpolation matrix from a face to this particular child

Note: We have to be careful not to accidentally create constraint cycles when adding periodic constraints: For example, as the corresponding testcase bits/periodicity_05 demonstrates, we can occasionally get into trouble if we already have the constraint x1 == x2 and want to insert x2 == x1. We avoid this by skipping such "identity constraints" if the opposite constraint already exists.

Definition at line 3103 of file dof_tools_constraints.cc.