MeshToolsLib::BoundaryExtraction Namespace Reference

Functions
std::unique_ptr< MeshLib::Mesh >	getBoundaryElementsAsMesh (MeshLib::Mesh const &bulk_mesh, std::string_view subsfc_node_id_prop_name, std::string_view subsfc_element_id_prop_name, std::string_view face_id_prop_name)

Function Documentation

getBoundaryElementsAsMesh()

std::unique_ptr< MeshLib::Mesh > MeshToolsLib::BoundaryExtraction::getBoundaryElementsAsMesh	(	MeshLib::Mesh const &	bulk_mesh,
		std::string_view	subsfc_node_id_prop_name,
		std::string_view	subsfc_element_id_prop_name,
		std::string_view	face_id_prop_name )

Copies relevant parts of scalar arrays to the surface mesh

Definition at line 474 of file MeshSurfaceExtraction.cpp.

{
    auto const mesh_dimension = bulk_mesh.getDimension();
    if (mesh_dimension < 2 || mesh_dimension > 3)
    {
        ERR("Cannot handle meshes of dimension {}", mesh_dimension);
    }
 
    // create boundary elements based on the subsurface nodes
    auto [boundary_elements, element_to_bulk_element_id_map,
          element_to_bulk_face_id_map] = createBoundaryElements(bulk_mesh);
 
    // create new nodes needed for the new surface elements
    auto [boundary_nodes, node_id_map] = createNodesAndIDMapFromElements(
        boundary_elements, bulk_mesh.getNumberOfNodes());
 
    // create new elements using newly created nodes and delete temp-elements
    auto new_elements = MeshLib::copyElementVector(
        boundary_elements, boundary_nodes, &node_id_map);
    for (auto* e : boundary_elements)
    {
        delete e;
    }
 
    auto boundary_node_ids = boundary_nodes | MeshLib::views::ids;
 
    std::vector<std::size_t> const nodes_to_bulk_nodes_id_map(
        boundary_node_ids.begin(), boundary_node_ids.end());
 
    std::unique_ptr<MeshLib::Mesh> boundary_mesh(
        new MeshLib::Mesh(bulk_mesh.getName() + "-boundary", boundary_nodes,
                          new_elements, true /* compute_element_neighbors */));
 
    addBulkIDPropertiesToMesh(
        *boundary_mesh, subsfc_node_id_prop_name, nodes_to_bulk_nodes_id_map,
        subsfc_element_id_prop_name, element_to_bulk_element_id_map,
        face_id_prop_name, element_to_bulk_face_id_map);
 
    if (!createSfcMeshProperties(*boundary_mesh, bulk_mesh.getProperties(),
                                 nodes_to_bulk_nodes_id_map,
                                 element_to_bulk_element_id_map))
    {
        ERR("Transferring subsurface properties failed.");
    }
    return boundary_mesh;
}

References MeshToolsLib::addBulkIDPropertiesToMesh(), MeshLib::copyElementVector(), MeshToolsLib::createBoundaryElements(), MeshToolsLib::createNodesAndIDMapFromElements(), MeshToolsLib::createSfcMeshProperties(), ERR(), MeshLib::Mesh::getDimension(), MeshLib::Mesh::getName(), MeshLib::Mesh::getNumberOfNodes(), MeshLib::Mesh::getProperties(), and MeshLib::views::ids.

Referenced by MeshToolsLib::MeshValidation::detectHoles(), extractBoundaries(), and main().