MeshGeometry

class dolfin.cpp.mesh.MeshGeometry(*args)

Bases: object

MeshGeometry stores the geometry imposed on a mesh. Currently, the geometry is represented by the set of coordinates for the vertices of a mesh, but other representations are possible.

Copy constructor.

Parameters:MeshGeometry & geometry (const) –
degree()

Return polynomial degree of coordinate field.

Return type:std::size_t
dim()

Return Euclidean dimension of coordinate system.

Return type:std::size_t
get_entity_index()

Get the index for an entity point in coordinates.

Parameters:
  • entity_dim (std::size_t) –
  • order (std::size_t) –
  • index (std::size_t) –
Return type:

std::size_t
hash()

Hash of coordinate values Returns std::size_t A tree-hashed value of the coordinates over all MPI processes

Return type:std::size_t
init()

Initialize coordinate list to given dimension and degree.

Parameters:
  • dim (std::size_t) –
  • degree (std::size_t) –
Return type:

void
init_entities()

Initialise entities. To be called after init.

Parameters:std::vector< std::size_t > & num_entities (const) –
Return type:void
num_entity_coordinates()

Get the number of coordinate points per entity for this degree.

Parameters:entity_dim (std::size_t) –
Return type:std::size_t
num_points()

Return the total number of points in the geometry, located on any entity

Return type:std::size_t
num_vertices()

Return the number of vertex coordinates.

Return type:std::size_t
point()

Return coordinate with local index n as a 3D point value.

Parameters:n (std::size_t) –
Return type:Point
point_coordinates()

Get vertex coordinates.

Parameters:point_index (std::size_t) –
Return type:const double *
set()

Set value of coordinate.

Parameters:
  • local_index (std::size_t) –
  • double * x (const) –
Return type:

void
str()

Return informal string representation (pretty-print)

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

The membership flag

vertex_coordinates()

Get vertex coordinates.

Parameters:point_index (std::size_t) –
Return type:const double *
x()

Return array of values for all coordinates.

Return type:std::vector< double > &