a subclass of mesh_fem which allows to eliminate a number of dof of the original mesh_fem. More...

#include <getfem_partial_mesh_fem.h>

Public Member Functions
void	update_from_context (void) const
	this function has to be defined and should update the object when the context is modified.

void	adapt (const dal::bit_vector &kept_dof, const dal::bit_vector &rejected_elt=dal::bit_vector())
	build the mesh_fem keeping only the dof of the original mesh_fem which are listed in kept_dof.

pfem	fem_of_element (size_type cv) const
	Return the basic fem associated with an element (if no fem is associated, the function will crash! use the convex_index() of the mesh_fem to check that a fem is associated to a given convex). More...

virtual dim_type	get_qdim () const
	Return the Q dimension. More...

virtual void	set_qdim (dim_type)
	Change the Q dimension.

virtual void	set_qdim (dim_type, dim_type)
	Set the dimension for a matrix field.

virtual void	set_qdim (dim_type, dim_type, dim_type, dim_type)
	Set the dimension for a fourth order tensor field.

virtual void	set_qdim (const bgeot::multi_index &)
	Set the dimension for an arbitrary order tensor field.

ind_dof_ct	ind_basic_dof_of_element (size_type cv) const
	Give an array of the dof numbers a of convex. More...

ind_dof_face_ct	ind_basic_dof_of_face_of_element (size_type cv, short_type f) const
	Give an array of the dof numbers lying of a convex face (all degrees of freedom whose associated base function is non-zero on the convex face). More...

size_type	nb_basic_dof_of_face_of_element (size_type cv, short_type f) const
	Return the number of dof lying on the given convex face. More...

size_type	nb_basic_dof_of_element (size_type cv) const
	Return the number of degrees of freedom attached to a given convex. More...

base_node	point_of_basic_dof (size_type cv, size_type i) const
	Return the geometrical location of a degree of freedom. More...

base_node	point_of_basic_dof (size_type d) const
	Return the geometrical location of a degree of freedom. More...

dim_type	basic_dof_qdim (size_type d) const
	Return the dof component number (0<= x <Qdim)

size_type	first_convex_of_basic_dof (size_type d) const
	Shortcut for convex_to_dof(d)[0]. More...

const mesh::ind_cv_ct &	convex_to_basic_dof (size_type d) const
	Return the list of convexes attached to the specified dof. More...

size_type	nb_dof (void) const
	Return the total number of degrees of freedom.

size_type	nb_basic_dof (void) const
	Return the total number of basic degrees of freedom (before the optional reduction).

dal::bit_vector	basic_dof_on_region (const mesh_region &b) const
	Get a list of basic dof lying on a given mesh_region. More...

void	read_from_file (std::istream &)
	Read the mesh_fem from a stream. More...

void	write_to_file (std::ostream &ost) const
	Write the mesh_fem to a stream.

Public Member Functions inherited from getfem::mesh_fem
const dal::bit_vector &	convex_index () const
	Get the set of convexes where a finite element has been assigned.

bool	is_reduced () const
	Return true if a reduction matrix is applied to the dofs.

const REDUCTION_MATRIX &	reduction_matrix () const
	Return the reduction matrix applied to the dofs.

const EXTENSION_MATRIX &	extension_matrix () const
	Return the extension matrix corresponding to reduction applied (RE=I).

template<typename MATR , typename MATE >
void	set_reduction_matrices (const MATR &RR, const MATE &EE)
	Allows to set the reduction and the extension matrices. More...

void	reduce_to_basic_dof (const dal::bit_vector &kept_basic_dof)
	Allows to set the reduction and the extension matrices in order to keep only a certain number of dof.

void	set_reduction (bool r)
	Validate or invalidate the reduction (keeping the reduction matrices).

const mesh &	linked_mesh () const
	Return a reference to the underlying mesh.

void	set_auto_add (dim_type K, bool disc=false, scalar_type alpha=scalar_type(0), bool complete=false)
	Set the degree of the fem for automatic addition of element option. More...

void	set_auto_add (pfem pf)
	Set the fem for automatic addition of element option. More...

dim_type	get_qdim_m () const IS_DEPRECATED
	for matrix fields, return the number of rows.

dim_type	get_qdim_n () const IS_DEPRECATED
	for matrix fields, return the number of columns.

void	set_finite_element (size_type cv, pfem pf)
	Set the finite element method of a convex. More...

void	set_finite_element (const dal::bit_vector &cvs, pfem pf)
	Set the finite element on a set of convexes. More...

void	set_finite_element (pfem pf)
	shortcut for set_finite_element(linked_mesh().convex_index(),pf); and set_auto_add(pf).

void	set_classical_finite_element (size_type cv, dim_type fem_degree, bool complete=false)
	Set a classical (i.e. More...

void	set_classical_finite_element (const dal::bit_vector &cvs, dim_type fem_degree, bool complete=false)
	Set a classical (i.e. More...

void	set_classical_discontinuous_finite_element (size_type cv, dim_type fem_degree, scalar_type alpha=0, bool complete=false)
	Similar to set_classical_finite_element, but uses discontinuous lagrange elements. More...

void	set_classical_discontinuous_finite_element (const dal::bit_vector &cvs, dim_type fem_degree, scalar_type alpha=0, bool complete=false)
	Similar to set_classical_finite_element, but uses discontinuous lagrange elements. More...

void	set_classical_finite_element (dim_type fem_degree, bool complete=false)
	Shortcut for set_classical_finite_element(linked_mesh().convex_index(),...)

void	set_classical_discontinuous_finite_element (dim_type fem_degree, scalar_type alpha=0, bool complete=false)
	Shortcut for set_classical_discontinuous_finite_element(linked_mesh().convex_index() ,...)

virtual void	get_global_dof_index (std::vector< size_type > &ind) const
	Give an array that contains the global dof indices corresponding to the mesh_fem dofs or size_type(-1) if a dof is not global. More...

virtual void	enumerate_dof () const
	Renumber the degrees of freedom. More...

dal::bit_vector	dof_on_region (const mesh_region &b) const
	Get a list of dof lying on a given mesh_region. More...

	mesh_fem (const mesh &me, dim_type Q=1)
	Build a new mesh_fem. More...

void	read_from_file (const std::string &name)
	Read the mesh_fem from a file. More...

void	write_to_file (const std::string &name, bool with_mesh=false) const
	Write the mesh_fem to a file. More...

Public Member Functions inherited from getfem::context_dependencies
bool	context_check () const
	return true if update_from_context was called

Detailed Description

a subclass of mesh_fem which allows to eliminate a number of dof of the original mesh_fem.

Definition at line 55 of file getfem_partial_mesh_fem.h.

Member Function Documentation

◆ fem_of_element()

pfem getfem::partial_mesh_fem::fem_of_element ( size_type cv ) const

inlinevirtual

Return the basic fem associated with an element (if no fem is associated, the function will crash! use the convex_index() of the mesh_fem to check that a fem is associated to a given convex).

This fem does not take into account the optional vectorization due to qdim nor the optional reduction.

Reimplemented from getfem::mesh_fem.

Definition at line 70 of file getfem_partial_mesh_fem.h.

◆ get_qdim()

virtual dim_type getfem::partial_mesh_fem::get_qdim ( ) const

inlinevirtual

Return the Q dimension.

A mesh_fem used for scalar fields has Q=1, for vector fields, Q is typically equal to linked_mesh().dim().

Reimplemented from getfem::mesh_fem.

Definition at line 73 of file getfem_partial_mesh_fem.h.

◆ ind_basic_dof_of_element()

ind_dof_ct getfem::partial_mesh_fem::ind_basic_dof_of_element ( size_type cv ) const

inlinevirtual

Give an array of the dof numbers a of convex.

Parameters

cv	the convex number.

Returns: a pseudo-container of the dof number.

Reimplemented from getfem::mesh_fem.

Definition at line 101 of file getfem_partial_mesh_fem.h.

◆ ind_basic_dof_of_face_of_element()

ind_dof_face_ct getfem::partial_mesh_fem::ind_basic_dof_of_face_of_element	(	size_type	cv,
		short_type	f
	)		const

inlinevirtual

Give an array of the dof numbers lying of a convex face (all degrees of freedom whose associated base function is non-zero on the convex face).

Parameters

cv	the convex number.
f	the face number.

Returns: a pseudo-container of the dof number.

Reimplemented from getfem::mesh_fem.

Definition at line 109 of file getfem_partial_mesh_fem.h.

◆ nb_basic_dof_of_face_of_element()

size_type getfem::partial_mesh_fem::nb_basic_dof_of_face_of_element	(	size_type	cv,
		short_type	f
	)		const

inlinevirtual

Return the number of dof lying on the given convex face.

Parameters

cv	the convex number.
f	the face number.

Reimplemented from getfem::mesh_fem.

Definition at line 112 of file getfem_partial_mesh_fem.h.

◆ nb_basic_dof_of_element()

size_type getfem::partial_mesh_fem::nb_basic_dof_of_element ( size_type cv ) const

inlinevirtual

Return the number of degrees of freedom attached to a given convex.

Parameters

cv	the convex number.

Reimplemented from getfem::mesh_fem.

Definition at line 115 of file getfem_partial_mesh_fem.h.

◆ point_of_basic_dof() [1/2]

base_node getfem::partial_mesh_fem::point_of_basic_dof	(	size_type	cv,
		size_type	i
	)		const

inlinevirtual

Return the geometrical location of a degree of freedom.

Parameters

cv	the convex number.
i	the local dof number.

Reimplemented from getfem::mesh_fem.

Definition at line 118 of file getfem_partial_mesh_fem.h.

◆ point_of_basic_dof() [2/2]

base_node getfem::partial_mesh_fem::point_of_basic_dof ( size_type d ) const

inlinevirtual

Return the geometrical location of a degree of freedom.

Parameters

d	the global dof number.

Reimplemented from getfem::mesh_fem.

Definition at line 121 of file getfem_partial_mesh_fem.h.

◆ first_convex_of_basic_dof()

size_type getfem::partial_mesh_fem::first_convex_of_basic_dof ( size_type d ) const

inlinevirtual

Shortcut for convex_to_dof(d)[0].

Parameters

d	the global dof number.

Reimplemented from getfem::mesh_fem.

Definition at line 127 of file getfem_partial_mesh_fem.h.

◆ convex_to_basic_dof()

const mesh::ind_cv_ct& getfem::partial_mesh_fem::convex_to_basic_dof ( size_type d ) const

inlinevirtual

Return the list of convexes attached to the specified dof.

Parameters

d	the global dof number.

Returns: an array of convex numbers.

Reimplemented from getfem::mesh_fem.

Definition at line 130 of file getfem_partial_mesh_fem.h.

◆ basic_dof_on_region()

dal::bit_vector getfem::partial_mesh_fem::basic_dof_on_region ( const mesh_region & b ) const

inlinevirtual

Get a list of basic dof lying on a given mesh_region.

Parameters

b	the mesh_region.

Returns: the list in a dal::bit_vector.

Reimplemented from getfem::mesh_fem.

Definition at line 141 of file getfem_partial_mesh_fem.h.

◆ read_from_file()

void getfem::partial_mesh_fem::read_from_file ( std::istream & ist )

inlinevirtual

Read the mesh_fem from a stream.

Parameters

ist	the stream.

Reimplemented from getfem::mesh_fem.

Definition at line 147 of file getfem_partial_mesh_fem.h.

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

src/getfem/getfem_partial_mesh_fem.h
src/getfem_partial_mesh_fem.cc

Public Member Functions

Detailed Description

Member Function Documentation

◆ fem_of_element()

◆ get_qdim()

◆ ind_basic_dof_of_element()

◆ ind_basic_dof_of_face_of_element()

◆ nb_basic_dof_of_face_of_element()

◆ nb_basic_dof_of_element()

◆ point_of_basic_dof() [1/2]

◆ point_of_basic_dof() [2/2]

◆ first_convex_of_basic_dof()

◆ convex_to_basic_dof()

◆ basic_dof_on_region()

◆ read_from_file()