Function entity_map

python/dolfinx/mesh.py:573–598

Create a bidirectional map between (sub) topologies. The map relates entities of dimension `dim` in `topology` and `sub_topology`. Args: topology: A topology. sub_topology: Topology of another mesh. This must be a "sub-topology" of `topology` i.e. every enti

(
    topology: Topology,
    sub_topology: Topology,
    dim: int,
    sub_topology_to_topology: npt.NDArray[np.int32],
)

def entity_map(
    topology: Topology,
    sub_topology: Topology,
    dim: int,
    sub_topology_to_topology: npt.NDArray[np.int32],
) -> EntityMap:
    """Create a bidirectional map between (sub) topologies.

    The map relates entities of dimension `dim` in `topology` and
    `sub_topology`.

    Args:
        topology: A topology.
        sub_topology: Topology of another mesh. This must be a
            "sub-topology" of `topology` i.e. every entity in
            `sub_topology` must also exist in `topology`.
        dim: The dimension of the entities
        sub_topology_to_topology: A list of entities in `topology` where
            `sub_topology_to_topology[i]` is the index in `topology`
            corresponding to entity `i` in `sub_topology`.
    """
    return EntityMap(
        _cpp.mesh.EntityMap(
            topology._cpp_object, sub_topology._cpp_object, dim, sub_topology_to_topology
        )
    )


def compute_incident_entities(