class dolfin.cpp.mesh.PeriodicBoundaryComputation

Bases: object

This class computes map from slave entity to master entity

static compute_periodic_pairs(mesh, sub_domain, dim)

For entities of dimension dim, compute map from a slave entity on this process (local index) to its master entity (owning process, local index on owner). If a master entity is shared by processes, only one of the owning processes is returned.

static masters_slaves(mesh, sub_domain, dim)

This function returns a MeshFunction which marks mesh entities of dimension dim according to:

2: slave entities 1: master entities 0: all other entities

It is useful for visualising and debugging the Expression::map function that is used to apply periodic boundary conditions.


The membership flag