dolfinx::io::xdmf_mesh Namespace Reference

Low-level methods for reading XDMF files. More...

Functions
template<std::floating_point U>
void	add_mesh (MPI_Comm comm, pugi::xml_node &xml_node, hid_t h5_id, const mesh::Mesh< U > &mesh, const std::string &path_prefix)
template<std::floating_point U>
void	add_topology_data (MPI_Comm comm, pugi::xml_node &xml_node, hid_t h5_id, const std::string &path_prefix, const mesh::Topology &topology, const mesh::Geometry< U > &geometry, int cell_dim, std::span< const std::int32_t > entities)
template<std::floating_point U>
void	add_geometry_data (MPI_Comm comm, pugi::xml_node &xml_node, hid_t h5_id, const std::string &path_prefix, const mesh::Geometry< U > &geometry)
	Add Geometry xml node.
std::pair< std::variant< std::vector< float >, std::vector< double > >, std::array< std::size_t, 2 > >	read_geometry_data (MPI_Comm comm, hid_t h5_id, const pugi::xml_node &node)
	Read geometry (coordinate) data.
std::pair< std::vector< std::int64_t >, std::array< std::size_t, 2 > >	read_topology_data (MPI_Comm comm, hid_t h5_id, const pugi::xml_node &node)
	Read topology (cell connectivity) data.
template<typename T, std::floating_point U>
void	add_meshtags (MPI_Comm comm, const mesh::MeshTags< T > &meshtags, const mesh::Geometry< U > &geometry, pugi::xml_node &xml_node, hid_t h5_id, const std::string &name)
	Add mesh tags to XDMF file.

Detailed Description

Low-level methods for reading XDMF files.

Function Documentation

add_mesh()

template<std::floating_point U>

void add_mesh	(	MPI_Comm	comm,
		pugi::xml_node &	xml_node,
		hid_t	h5_id,
		const mesh::Mesh< U > &	mesh,
		const std::string &	path_prefix )

Add Mesh to xml node

Creates new Grid with Topology and Geometry xml nodes for mesh. In HDF file data is stored under path prefix.

add_topology_data()

template<std::floating_point U>

void add_topology_data	(	MPI_Comm	comm,
		pugi::xml_node &	xml_node,
		hid_t	h5_id,
		const std::string &	path_prefix,
		const mesh::Topology &	topology,
		const mesh::Geometry< U > &	geometry,
		int	cell_dim,
		std::span< const std::int32_t >	entities )

Add Topology xml node

Parameters

[in]	comm
[in]	xml_node
[in]	h5_id
[in]	path_prefix
[in]	topology
[in]	geometry
[in]	cell_dim	Dimension of mesh entities to save
[in]	entities	Local-to-process indices of mesh entities whose topology will be saved. This is used to save subsets of Mesh.

read_geometry_data()

std::pair< std::variant< std::vector< float >, std::vector< double > >, std::array< std::size_t, 2 > > read_geometry_data	(	MPI_Comm	comm,
		hid_t	h5_id,
		const pugi::xml_node &	node )

Read geometry (coordinate) data.

Returns

The coordinates of each 'node'. The returned data is (0) an array holding the coordinates (row-major storage) and (1) the shape of the coordinate array. The shape is (num_nodes, geometric / dimension).

read_topology_data()

std::pair< std::vector< std::int64_t >, std::array< std::size_t, 2 > > read_topology_data	(	MPI_Comm	comm,
		hid_t	h5_id,
		const pugi::xml_node &	node )

Read topology (cell connectivity) data.

Returns

Mesh topology in DOLFINx ordering, where data row i lists the 'nodes' of cell i. The returned data is (0) an array holding the topology data (row-major storage) and (1) the shape of the topology array. The shape is (num_cells, num_nodes_per_cell)