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.

Overloaded versions

• MeshConnectivity(d0, d1)

  Create empty connectivity between given dimensions (d0 – d1)

• MeshConnectivity(connectivity)

  Copy constructor

clear()

Clear all data

empty()

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

hash()

Hash of connections

init()

Overloaded versions

• init(num_entities, num_connections)

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

• init(num_connections)

  Initialize number of entities and number of connections (individually)

set_global_size()

Set global number of connections for all local entities

size()

Overloaded versions

• size()

  Return total number of connections

• size(entity)

  Return number of connections for given entity

size_global()

Return global number of connections for given entity

str()

Return informal string representation (pretty-print)

thisown

The membership flag