A MeshTags are used to associate mesh entities with values. The entity index (local to process) identifies the entity. MeshTags is a sparse data storage class; it allows tags to be associated with an arbitrary subset of mesh entities. An entity can have only one associated tag. More...

#include <MeshTags.h>

Public Member Functions
template<typename U , typename V >
	MeshTags (const std::shared_ptr< const Mesh > &mesh, int dim, U &&indices, V &&values)
	Create from entities of given dimension on a mesh. More...

	MeshTags (const MeshTags &tags)=default
	Copy constructor.

	MeshTags (MeshTags &&tags)=default
	Move constructor.

	~MeshTags ()=default
	Destructor.

MeshTags &	operator= (const MeshTags &tags)=default
	Move assignment.

MeshTags &	operator= (MeshTags &&tags)=default
	Move assignment.

std::vector< std::int32_t >	find (const T value) const
	Find all entities with a given tag value. More...

const std::vector< std::int32_t > &	indices () const
	Indices of tagged mesh entities (local-to-process). The indices are sorted.

const std::vector< T > &	values () const
	Values attached to mesh entities.

int	dim () const
	Return topological dimension of tagged entities.

std::shared_ptr< const Mesh >	mesh () const
	Return mesh.

std::size_t	id () const
	Unique ID of the object.

Public Attributes
std::string	name = "mesh_tags"
	Name.

Detailed Description

template<typename T>
class dolfinx::mesh::MeshTags< T >

A MeshTags are used to associate mesh entities with values. The entity index (local to process) identifies the entity. MeshTags is a sparse data storage class; it allows tags to be associated with an arbitrary subset of mesh entities. An entity can have only one associated tag.

Template Parameters

Type

Constructor & Destructor Documentation

◆ MeshTags()

template<typename T >

template<typename U , typename V >

dolfinx::mesh::MeshTags< T >::MeshTags	(	const std::shared_ptr< const Mesh > &	mesh,
		int	dim,
		U &&	indices,
		V &&	values
	)

inline

Create from entities of given dimension on a mesh.

Parameters

[in]	mesh	The mesh on which the tags are associated
[in]	dim	Topological dimension of mesh entities to tag
[in]	indices	std::vector<std::int32> of sorted and unique entity indices (indices local to the process)
[in]	values	std::vector<T> of values for each index in indices. The size must be equal to the size of `indices`.

Member Function Documentation

◆ find()

template<typename T >

std::vector<std::int32_t> dolfinx::mesh::MeshTags< T >::find ( const T value ) const

inline

Find all entities with a given tag value.

Parameters

[in] value The value

Returns: Indices of tagged entities

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

/build/fenics-dolfinx-RWjuNH/fenics-dolfinx-0.3.0/cpp/dolfinx/io/XDMFFile.h
/build/fenics-dolfinx-RWjuNH/fenics-dolfinx-0.3.0/cpp/dolfinx/mesh/MeshTags.h

Public Member Functions