MeshConnectivity¶

class dolfin.cpp.mesh.MeshConnectivity(*args)¶

Bases: object

Mesh connectivity stores a sparse data structure of connections (incidence relations) between mesh entities for a fixed pair of topological dimensions. The connectivity can be specified either by first giving the number of entities and the number of connections for each entity, which may either be equal for all entities or different, or by giving the entire (sparse) connectivity pattern.

Copy constructor.

Parameters:	MeshConnectivity & connectivity (const) –

clear()¶

Clear all data.

Return type:	void

empty()¶

Return true if the total number of connections is equal to zero.

Return type:	bool

hash()¶

Hash of connections.

Return type:	std::size_t

init()¶

Initialize number of entities and number of connections (equal for all)

Parameters:	num_entities (std::size_t) – num_connections (std::size_t) –
Return type:	void

set_global_size()¶

Set global number of connections for all local entities.

Parameters:	std::vector< unsigned int > & num_global_connections (const) –
Return type:	void

size()¶

Return total number of connections.

Return type:	std::size_t

size_global()¶

Return global number of connections for given entity.

Parameters:	entity (std::size_t) –
Return type:	std::size_t

str()¶

Return informal string representation (pretty-print)

Parameters:	verbose (bool) –
Return type:	std::string

thisown¶: The membership flag