Mesh structure definition. More...

#include <bgeot_mesh_structure.h>

Inherited by bgeot::basic_mesh.

Public Member Functions
const dal::bit_vector &	convex_index () const
	Return the list of valid convex IDs.

dal::bit_vector	convex_index (dim_type) const
	Return the list of valid convex IDs of a given dimension.

size_type	nb_convex () const
	The total number of convexes in the mesh.

size_type	nb_allocated_convex () const
	The number of convex indexes from 0 to the index of the last convex.

bool	is_convex_valid (size_type i)
	Return true if i is in convex_index()

bool	is_point_valid (size_type i) const
	Return true if the point i is used by at least one convex.

const ind_set &	ind_points_of_convex (size_type ic) const
	Return a container to the list of points attached to convex ic. More...

size_type	local_ind_of_convex_point (size_type ic, size_type ip) const
	Return the "local" index for point ip of the mesh.

pconvex_structure	structure_of_convex (size_type ic) const
	Return the pconvex_structure of the convex ic.

short_type	nb_points_of_convex (size_type ic) const
	Return the number of points of convex ic.

short_type	nb_faces_of_convex (size_type ic) const
	Return the number of faces of convex ic.

void	swap_points (size_type i, size_type j)
	Exchange two point IDs.

void	swap_convex (size_type cv1, size_type cv2)
	Exchange two convex IDs.

template<class ITER >
size_type	add_convex (pconvex_structure cs, ITER ipts, bool *present=0)
	Insert a new convex in the mesh_structure. More...

void	sup_convex (size_type ic)
	Remove the convex ic.

template<class ITER >
void	sup_convex_with_points (ITER ipts, short_type nb)
	Remove a convex given its points. More...

size_type	add_face_of_convex (size_type ic, short_type f)
	Insert a new convex corresponding to face f of the convex ic.

void	add_faces_of_convex (size_type ic)
	Insert new convexes corresponding to the faces of the convex ic.

void	to_faces (dim_type n)
	build a new mesh, such that its convexes are the faces of the convexes of the previous one

void	to_edges ()
	build a new mesh, such that its convexes are the edges of the convexes of the previous one

const ind_cv_ct &	convex_to_point (size_type ip) const
	Return a container of the convexes attached to point ip.

void	ind_points_to_point (size_type, ind_set &) const
	Return a container of the points attached (via an edge) to point ip.

template<class ITER >
bool	is_convex_having_points (size_type ic, short_type nb, ITER pit) const
	Return true if the convex contains the listed points. More...

template<class ITER >
bool	is_convex_face_having_points (size_type ic, short_type face_num, short_type nb, ITER pit) const
	Return true if the face of the convex contains the given list of points.

ind_pt_face_ct	ind_points_of_face_of_convex (size_type ic, short_type f) const
	Return a container of the (global) point number for face f or convex ic.

void	optimize_structure ()
	Reorder the convex IDs and point IDs, such that there is no hole in their numbering.

void	clear ()
	erase the mesh

void	neighbors_of_convex (size_type ic, short_type f, ind_set &s) const
	Return in s a list of neighbors of a given convex face. More...

void	neighbors_of_convex (size_type ic, const std::vector< short_type > &ftab, ind_set &s) const
	Return in s a list of neighbors of a given convex sharing the intersection of a given list of faces. More...

void	neighbors_of_convex (size_type ic, ind_set &s) const
	Return a list of neighbors of a given convex. More...

size_type	neighbor_of_convex (size_type ic, short_type f) const
	Return a neighbor convex of a given convex face. More...

convex_face	adjacent_face (size_type ic, short_type f) const
	Return a face of the neighbouring element that is adjacent to the given face. More...

size_type	first_convex_of_point (size_type ip) const
	Convex ID of the first convex attached to the point ip.

size_type	ind_in_convex_of_point (size_type ic, size_type ip) const
	Find the local index of the point of global index ip with respect to the convex cv. More...

Detailed Description

Mesh structure definition.

At this point, the mesh is just a graph: the points have no associated coordinates

Definition at line 73 of file bgeot_mesh_structure.h.

Member Function Documentation

◆ ind_points_of_convex()

const ind_set& bgeot::mesh_structure::ind_points_of_convex ( size_type ic ) const

inline

Return a container to the list of points attached to convex ic.

They are ordered according to structure_of_convex(ic)

Definition at line 107 of file bgeot_mesh_structure.h.

◆ add_convex()

template<class ITER >

size_type bgeot::mesh_structure::add_convex	(	pconvex_structure	cs,
		ITER	ipts,
		bool *	present = `0`
	)

Insert a new convex in the mesh_structure.

Parameters

cs	the structure of the new convex.
ipts	an iterator over a sequence of integers (point IDs of the convex nodes).
present	an optional argument, contains true on return if the convex already exists in the mesh_structure.

Returns: the convex ID

Definition at line 306 of file bgeot_mesh_structure.h.

◆ sup_convex_with_points()

template<class ITER >

void bgeot::mesh_structure::sup_convex_with_points	(	ITER	ipts,
		short_type	nb
	)

Remove a convex given its points.

Parameters

nb	the number of points for the convex
ipts	an iterator over the list of point IDs of the convex

Definition at line 317 of file bgeot_mesh_structure.h.

◆ is_convex_having_points()

template<class ITER >

bool bgeot::mesh_structure::is_convex_having_points	(	size_type	ic,
		short_type	nb,
		ITER	pit
	)		const

Return true if the convex contains the listed points.

Parameters

ic	the convex ID.
nb	the number of points which are searched in ic.
pit	an iterator to the list of points searched.

Definition at line 272 of file bgeot_mesh_structure.h.

◆ neighbors_of_convex() [1/3]

void bgeot::mesh_structure::neighbors_of_convex	(	size_type	ic,
		short_type	f,
		ind_set &	s
	)		const

Return in s a list of neighbors of a given convex face.

Parameters

ic	the convex id.
f	the face number of the convex.
s	the resulting ind_set.

Definition at line 217 of file bgeot_mesh_structure.cc.

◆ neighbors_of_convex() [2/3]

void bgeot::mesh_structure::neighbors_of_convex	(	size_type	ic,
		const std::vector< short_type > &	ftab,
		ind_set &	s
	)		const

Return in s a list of neighbors of a given convex sharing the intersection of a given list of faces.

Parameters

ic	the convex id.
f	the face number of the convex.
s	the resulting ind_set.

Definition at line 232 of file bgeot_mesh_structure.cc.

◆ neighbors_of_convex() [3/3]

void bgeot::mesh_structure::neighbors_of_convex	(	size_type	ic,
		ind_set &	s
	)		const

Return a list of neighbors of a given convex.

Parameters

ic	the convex id.
s	the resulting ind_set.

Definition at line 280 of file bgeot_mesh_structure.cc.

◆ neighbor_of_convex()

size_type bgeot::mesh_structure::neighbor_of_convex	(	size_type	ic,
		short_type	f
	)		const

Return a neighbor convex of a given convex face.

Parameters

ic	the convex id.
f	the face number of the convex.

Returns: size_type(-1) if there is no neighbor to this convex and the index of the first neighbor found otherwise.

Definition at line 297 of file bgeot_mesh_structure.cc.

◆ adjacent_face()

convex_face bgeot::mesh_structure::adjacent_face	(	size_type	ic,
		short_type	f
	)		const

Return a face of the neighbouring element that is adjacent to the given face.

Parameters

ic	the convex id.
f	the face number of the convex.

Returns: convex_face that contains the neighbors convex id and the adjacent face number, or convex_face::invalid_face() otherwise.

Definition at line 311 of file bgeot_mesh_structure.cc.

◆ ind_in_convex_of_point()

size_type bgeot::mesh_structure::ind_in_convex_of_point	(	size_type	ic,
		size_type	ip
	)		const

Find the local index of the point of global index ip with respect to the convex cv.

Returns: local index (a number smaller than nb_points_of_convex(first_convex_of_point(ip))) or size_type(-1) if the point is not found.

Definition at line 327 of file bgeot_mesh_structure.cc.

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

src/getfem/bgeot_mesh_structure.h
src/bgeot_mesh_structure.cc

Public Member Functions

Detailed Description

Member Function Documentation

◆ ind_points_of_convex()

◆ add_convex()

◆ sup_convex_with_points()

◆ is_convex_having_points()

◆ neighbors_of_convex() [1/3]

◆ neighbors_of_convex() [2/3]

◆ neighbors_of_convex() [3/3]

◆ neighbor_of_convex()

◆ adjacent_face()

◆ ind_in_convex_of_point()