MeshData

class dolfin.cpp.mesh.MeshData

Bases: dolfin.cpp.common.Variable

The class MeshData is a container for auxiliary mesh data, represented either as arrays or maps. Each dataset is identified by a unique user-specified string. Only std::size_t-valued data are currently supported. Auxiliary mesh data may be attached to a mesh by users as a convenient way to store data associated with a mesh. It is also used internally by DOLFIN to communicate data associated with meshes. The following named mesh data are recognized by DOLFIN: Facet orientation (used for assembly over interior facets)

  • “facet_orientation” - std:vector <std::size_t> of dimension D - 1

Sub meshes (used by the class SubMesh )

  • “parent_vertex_indices” - std::vector <std::size_t> of dimension 0

Note to developers: use underscore in names in place of spaces.

Friends: XMLMesh.

Constructor.

array()

Return array with given name (returning zero if data is not available)

Parameters:
  • name (std::string) – (std::string) The name of the array.
  • dim (std::size_t) – (std::size_t) Dimension.
Return type:

std::vector< std::size_t > &
Returns:

std::vector<std::size_t> The array.
clear()

Clear all data.

Return type:void
create_array()

Create array (vector) with given name and size

Parameters:
  • name (std::string) – (std::string) The name of the array.
  • dim (std::size_t) – (std::size_t) Dimension.
Return type:

std::vector< std::size_t > &
Returns:

std::vector<std::size_t> The array.
erase_array()

Erase array with given name

Parameters:
  • std::string name (const) – (std::string) The name of the array.
  • dim (std::size_t) – (std::size_t) Dimension.
Return type:

void
exists()

Check is array exists

Parameters:
  • name (std::string) – (std::string) The name of the array.
  • dim (std::size_t) – (std::size_t)
Return type:

bool
Returns:

bool True is array exists, false otherwise.
thisown

The membership flag