dolfin::MeshEntity Class Reference

#include <MeshEntity.h>

Inheritance diagram for dolfin::MeshEntity:

Collaboration diagram for dolfin::MeshEntity:

Public Member Functions
	MeshEntity ()
	Default Constructor.
	MeshEntity (const Mesh &mesh, std::size_t dim, std::size_t index)
virtual	~MeshEntity ()
	Destructor.
void	init (const Mesh &mesh, std::size_t dim, std::size_t index)
bool	operator== (const MeshEntity &e) const
bool	operator!= (const MeshEntity &e) const
const Mesh &	mesh () const
std::size_t	dim () const
std::size_t	index () const
std::int64_t	global_index () const
std::size_t	num_entities (std::size_t dim) const
std::size_t	num_global_entities (std::size_t dim) const
const unsigned int *	entities (std::size_t dim) const
std::size_t	mesh_id () const
bool	incident (const MeshEntity &entity) const
std::size_t	index (const MeshEntity &entity) const
Point	midpoint () const
bool	is_ghost () const
std::set< unsigned int >	sharing_processes () const
bool	is_shared () const
unsigned int	owner () const
std::string	str (bool verbose) const

Protected Attributes
Mesh const *	_mesh
std::size_t	_dim
std::size_t	_local_index

Friends
class	MeshEntityIterator
template<typename T >
class	MeshEntityIteratorBase
class	SubsetIterator

Detailed Description

A MeshEntity represents a mesh entity associated with a specific topological dimension of some Mesh.

Constructor & Destructor Documentation

MeshEntity()

MeshEntity::MeshEntity	(	const Mesh &	mesh,
		std::size_t	dim,
		std::size_t	index
	)

Constructor

Parameters

mesh	(Mesh) The mesh.
dim	(std::size_t) The topological dimension.
index	(std::size_t) The index.

Member Function Documentation

dim()

std::size_t dolfin::MeshEntity::dim ( ) const

inline

Return topological dimension

Returns

std::size_t The dimension.

entities()

const unsigned int* dolfin::MeshEntity::entities ( std::size_t  dim ) const

inline

Return array of indices for incident mesh entities of given topological dimension

Parameters

dim	(std::size_t) The topological dimension.

Returns

std::size_t The index for incident mesh entities of given dimension.

global_index()

std::int64_t dolfin::MeshEntity::global_index ( ) const

inline

Return global index of mesh entity

Returns

std::size_t The global index. Set to std::numerical_limits<std::size_t>::max() if global index has not been computed

incident()

bool MeshEntity::incident

(

const MeshEntity &

entity

)

const

Check if given entity is incident

Parameters

entity

(MeshEntity) The entity.

Returns

bool True if the given entity is incident

index() [1/2]

std::size_t dolfin::MeshEntity::index ( ) const

inline

Return index of mesh entity

Returns

std::size_t The index.

index() [2/2]

std::size_t MeshEntity::index

(

const MeshEntity &

entity

)

const

Compute local index of given incident entity (error if not found)

Parameters

entity

(MeshEntity) The mesh entity.

Returns

std::size_t The local index of given entity.

init()

void MeshEntity::init	(	const Mesh &	mesh,
		std::size_t	dim,
		std::size_t	index
	)

Initialize mesh entity with given data

Parameters

mesh	(Mesh) The mesh.
dim	(std::size_t) The topological dimension.
index	(std::size_t) The index.

is_ghost()

bool dolfin::MeshEntity::is_ghost ( ) const

inline

Determine whether an entity is a 'ghost' from another process

Returns

bool True if entity is a ghost entity

is_shared()

bool dolfin::MeshEntity::is_shared ( ) const

inline

Determine if an entity is shared or not

Returns

bool True if entity is shared

mesh()

const Mesh& dolfin::MeshEntity::mesh ( ) const

inline

Return mesh associated with mesh entity

Returns

Mesh The mesh.

mesh_id()

std::size_t dolfin::MeshEntity::mesh_id ( ) const

inline

Return unique mesh ID

Returns

std::size_t The unique mesh ID.

midpoint()

Point MeshEntity::midpoint

(

)

const

Compute midpoint of cell

Returns

Point The midpoint of the cell.

num_entities()

std::size_t dolfin::MeshEntity::num_entities ( std::size_t  dim ) const

inline

Return local number of incident mesh entities of given topological dimension

Parameters

dim	(std::size_t) The topological dimension.

Returns

std::size_t The number of local incident MeshEntity objects of given dimension.

num_global_entities()

std::size_t dolfin::MeshEntity::num_global_entities ( std::size_t  dim ) const

inline

Return global number of incident mesh entities of given topological dimension

Parameters

dim	(std::size_t) The topological dimension.

Returns

std::size_t The number of global incident MeshEntity objects of given dimension.

operator!=()

bool dolfin::MeshEntity::operator!= ( const MeshEntity &  e ) const

inline

Comparison Operator

Parameters

e	(MeshEntity) Another mesh entity.

Returns

bool True if the two mesh entities are NOT equal.

operator==()

bool dolfin::MeshEntity::operator== ( const MeshEntity &  e ) const

inline

Comparison Operator

Parameters

e	(MeshEntity) Another mesh entity

Returns

bool True if the two mesh entities are equal.

owner()

unsigned int MeshEntity::owner

(

)

const

Get ownership of this entity - only really valid for cells

Returns

unsigned int Owning process

sharing_processes()

std::set<unsigned int> dolfin::MeshEntity::sharing_processes ( ) const

inline

Return set of sharing processes

Returns

std::set<unsigned int> List of sharing processes

str()

std::string MeshEntity::str

(

bool

verbose

)

const

Return informal string representation (pretty-print)

Parameters

verbose

(bool) Flag to turn on additional output.

Returns

std::string An informal representation of the function space.

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

• /home/fenics/shared/dolfin/dolfin/mesh/MeshEntity.h
• /home/fenics/shared/dolfin/dolfin/mesh/MeshEntity.cpp