Provides the numbering of the finite element degrees of freedom on the computational mesh. More...

#include <dofhandler.hh>

Inheritance diagram for DOFHandlerMultiDim:

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Public Types
typedef ElementFullIter	CellIterator
	Alias for iterator over cells. More...

Public Types inherited from DOFHandlerBase
typedef ElementFullIter	CellIterator
	Alias for iterator over cells. More...

Public Member Functions
	DOFHandlerMultiDim (Mesh &_mesh)
	Constructor. More...

void	distribute_dofs (FiniteElement< 1, 3 > &fe1d, FiniteElement< 2, 3 > &fe2d, FiniteElement< 3, 3 > &fe3d, const unsigned int offset=0)
	Distributes degrees of freedom on the mesh needed for the given finite elements. More...

void	get_dof_indices (const CellIterator &cell, unsigned int indices[]) const override
	Returns the global indices of dofs associated to the `cell`. More...

void	get_loc_dof_indices (const CellIterator &cell, unsigned int indices[]) const override
	Returns the indices of dofs associated to the `cell` on the local process. More...

void	get_dof_values (const CellIterator &cell, const Vec &values, double local_values[]) const override
	Returns the dof values associated to the `cell`. More...

int	el_index (int loc_el) const
	Returns the global index of local element. More...

int	edge_index (int loc_edg) const
	Returns the global index of local edge. More...

int	nb_index (int loc_nb) const
	Returns the global index of local neighbour. More...

unsigned int	n_loc_edges () const
	Returns number of local edges. More...

unsigned int	n_loc_nb () const
	Returns number of local neighbours. More...

bool	el_is_local (int index) const

template<unsigned int dim>
FiniteElement< dim, 3 > *	fe () const
	Returns finite element object for given space dimension. More...

	~DOFHandlerMultiDim () override
	Destructor. More...

template<>
FiniteElement< 1, 3 > *	fe () const

template<>
FiniteElement< 2, 3 > *	fe () const

template<>
FiniteElement< 3, 3 > *	fe () const

Public Member Functions inherited from DOFHandlerBase
	DOFHandlerBase (Mesh &_mesh)
	Constructor. More...

const unsigned int	n_global_dofs () const
	Getter for the number of all mesh dofs required by the given finite element. More...

const unsigned int	offset () const
	Returns the number of the first global dof handled by this DOFHandler. More...

const unsigned int	lsize () const
	Returns the number of dofs on the current process. More...

const unsigned int	loffset () const
	Returns the offset of the local part of dofs. More...

Distribution *	distr () const

Mesh *	mesh () const

virtual	~DOFHandlerBase ()
	Destructor. More...

Private Member Functions
void	make_elem_partitioning ()
	Prepare parallel distribution of elements, edges and neighbours. More...

Private Attributes
FiniteElement< 1, 3 > *	fe1d_
	Pointer to the finite element class for which the handler distributes dofs. More...

FiniteElement< 2, 3 > *	fe2d_

FiniteElement< 3, 3 > *	fe3d_

int ***	object_dofs
	Number of dofs associated to geometrical entities. More...

int *	row_4_el
	Global element index -> index according to partitioning. More...

int *	el_4_loc
	Local element index -> global element index. More...

Distribution *	el_ds_
	Distribution of elements. More...

vector< int >	edg_4_loc
	Local edge index -> global edge index. More...

vector< int >	nb_4_loc
	Local neighbour index -> global neighbour index. More...

Additional Inherited Members
Protected Attributes inherited from DOFHandlerBase
unsigned int	global_dof_offset
	Index of first global dof. More...

unsigned int	n_dofs
	Number of global dofs assigned by the handler. More...

unsigned int	lsize_
	Number of dofs associated to local process. More...

unsigned int	loffset_
	Index of the first dof on the local process. More...

Mesh *	mesh_
	Pointer to the mesh to which the dof handler is associated. More...

Distribution *	ds_
	Distribution of dofs associated to local process. More...

Detailed Description

Provides the numbering of the finite element degrees of freedom on the computational mesh.

Class DOFHandler distributes the degrees of freedom (dof) for a particular finite element on the computational mesh and provides mappings between local and global dofs. The template parameter dim denotes the spatial dimension of the reference finite element.

Currently the functionality is restricted to discontinuous finite elements, i.e. when the neighboring elements do not share any common dof. Constructor.

Parameters

_mesh The mesh. Alias for iterator over cells.

TODO: Notation to be fixed: element or cell TODO: Iterator goes through cells of all dimensions, but should go only through dim-dimensional ones. Distributes degrees of freedom on the mesh needed for the given finite element.

The additional parameter offset allows to reserve space for another finite element dofs in the beginning of the global dof vector.

Parameters

fe	The finite element.
offset	The offset. Getter for the number of dofs at a single cell.

This value depends on the given finite element. Returns the global indices of dofs associated to the cell.

Parameters

cell	The cell.
indices	Array of dof indices on the cell. Returns the dof values associated to the `cell`.
cell	The cell.
values	The global vector of values.
local_values	Array of values at local dofs. Pointer to the finite element class for which the handler distributes dofs. Number of dofs associated to geometrical entities.

Global numbers of dofs associated to nodes (object_dofs[0]), 1D edges (object_dofs[1]), 2D faces (object_difs[2]) and volumes (object_dofs[3]).

Definition at line 248 of file dofhandler.hh.

Member Typedef Documentation

typedef ElementFullIter DOFHandlerMultiDim::CellIterator

Alias for iterator over cells.

TODO: Notation to be fixed: element or cell

Definition at line 262 of file dofhandler.hh.

Constructor & Destructor Documentation

DOFHandlerMultiDim::DOFHandlerMultiDim ( Mesh & _mesh )

Constructor.

Parameters

_mesh The mesh.

Definition at line 232 of file dofhandler.cc.

DOFHandlerMultiDim::~DOFHandlerMultiDim ( )

override

Destructor.

Definition at line 401 of file dofhandler.cc.

Member Function Documentation

void DOFHandlerMultiDim::distribute_dofs	(	FiniteElement< 1, 3 > &	fe1d,
		FiniteElement< 2, 3 > &	fe2d,
		FiniteElement< 3, 3 > &	fe3d,
		const unsigned int	offset = `0`
	)

Distributes degrees of freedom on the mesh needed for the given finite elements.

The additional parameter offset allows to reserve space for another finite element dofs in the beginning of the global dof vector.

Parameters

fe1d	The 1D finite element.
fe2d	The 2D finite element.
fe3d	The 3D finite element.
offset	The offset.

Definition at line 245 of file dofhandler.cc.

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int DOFHandlerMultiDim::edge_index ( int loc_edg ) const

inline

Returns the global index of local edge.

Parameters

loc_edg Local index of edge.

Definition at line 320 of file dofhandler.hh.

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int DOFHandlerMultiDim::el_index ( int loc_el ) const

inline

Returns the global index of local element.

Parameters

loc_el Local index of element.

Definition at line 313 of file dofhandler.hh.

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bool DOFHandlerMultiDim::el_is_local ( int index ) const

Returns true if element is on local process.

Parameters

index Global element index.

Definition at line 450 of file dofhandler.cc.

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template<unsigned int dim>

FiniteElement<dim,3>* DOFHandlerMultiDim::fe ( ) const

Returns finite element object for given space dimension.

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template<>

FiniteElement<3,3>* DOFHandlerMultiDim::fe ( ) const

Definition at line 461 of file dofhandler.cc.

template<>

FiniteElement<1,3>* DOFHandlerMultiDim::fe ( ) const

Definition at line 459 of file dofhandler.cc.

template<>

FiniteElement<2,3>* DOFHandlerMultiDim::fe ( ) const

Definition at line 460 of file dofhandler.cc.

void DOFHandlerMultiDim::get_dof_indices	(	const CellIterator &	cell,
		unsigned int	indices[]
	)		const

overridevirtual

Returns the global indices of dofs associated to the cell.

Parameters

cell	The cell.
indices	Array of dof indices on the cell.

Implements DOFHandlerBase.

Definition at line 334 of file dofhandler.cc.

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void DOFHandlerMultiDim::get_dof_values	(	const CellIterator &	cell,
		const Vec &	values,
		double	local_values[]
	)		const

overridevirtual

Returns the dof values associated to the cell.

Parameters

cell	The cell.
values	The global vector of values.
local_values	Array of values at local dofs.

Implements DOFHandlerBase.

Definition at line 378 of file dofhandler.cc.

void DOFHandlerMultiDim::get_loc_dof_indices	(	const CellIterator &	cell,
		unsigned int	indices[]
	)		const

overridevirtual

Returns the indices of dofs associated to the cell on the local process.

Parameters

cell	The cell.
indices	Array of dof indices on the cell.

Implements DOFHandlerBase.

Definition at line 356 of file dofhandler.cc.

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void DOFHandlerMultiDim::make_elem_partitioning ( )

private

Prepare parallel distribution of elements, edges and neighbours.

Definition at line 417 of file dofhandler.cc.

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unsigned int DOFHandlerMultiDim::n_loc_edges ( ) const

inline

Returns number of local edges.

Definition at line 332 of file dofhandler.hh.

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unsigned int DOFHandlerMultiDim::n_loc_nb ( ) const

inline

Returns number of local neighbours.

Definition at line 337 of file dofhandler.hh.

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int DOFHandlerMultiDim::nb_index ( int loc_nb ) const

inline

Returns the global index of local neighbour.

Parameters

loc_nb Local index of neighbour.

Definition at line 327 of file dofhandler.hh.

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Member Data Documentation

vector<int> DOFHandlerMultiDim::edg_4_loc

private

Local edge index -> global edge index.

Definition at line 385 of file dofhandler.hh.

int* DOFHandlerMultiDim::el_4_loc

private

Local element index -> global element index.

Definition at line 380 of file dofhandler.hh.

Distribution* DOFHandlerMultiDim::el_ds_

private

Distribution of elements.

Definition at line 382 of file dofhandler.hh.

FiniteElement<1,3>* DOFHandlerMultiDim::fe1d_

private

Pointer to the finite element class for which the handler distributes dofs.

Definition at line 363 of file dofhandler.hh.

FiniteElement<2,3>* DOFHandlerMultiDim::fe2d_

private

Definition at line 364 of file dofhandler.hh.

FiniteElement<3,3>* DOFHandlerMultiDim::fe3d_

private

Definition at line 365 of file dofhandler.hh.

vector<int> DOFHandlerMultiDim::nb_4_loc

private

Local neighbour index -> global neighbour index.

Definition at line 388 of file dofhandler.hh.

int*** DOFHandlerMultiDim::object_dofs

private

Number of dofs associated to geometrical entities.

Global numbers of dofs associated to nodes (object_dofs[0]), 1D edges (object_dofs[1]), 2D faces (object_difs[2]) and volumes (object_dofs[3]).

Definition at line 374 of file dofhandler.hh.

int* DOFHandlerMultiDim::row_4_el

private

Global element index -> index according to partitioning.

Definition at line 378 of file dofhandler.hh.

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

/opt/flow123d/flow123d/src/fem/dofhandler.hh
/opt/flow123d/flow123d/src/fem/dofhandler.cc

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation