add_blockset.cpp

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/**
 * \file add_blockset.cpp
 * \example add_blockset.cpp
 *
 * Create blockset and add entities. Next check if entities are in the blockset.
 *
 */
 
#include <MoFEM.hpp>
 
using namespace MoFEM;
 
static char help[] = "...\n\n";
 
int main(int argc, char *argv[]) {
 
  MoFEM::Core::Initialize(&argc, &argv, (char *)0, help);
 
  try {
 
    moab::Core mb_instance;
    moab::Interface &moab = mb_instance;
 
    // Create MoFEM instance
    MoFEM::Core core(moab);
    MoFEM::Interface &m_field = core;
    const char *option = "";
    CHKERR moab.load_file("rectangle_tri.h5m", 0, option);
 
    auto meshsets_mng = m_field.getInterface<MeshsetsManager>();
 
    auto get_ents_on_mesh_skin = [&]() {
      Range faces;
      CHKERR m_field.get_moab().get_entities_by_type(0, MBTRI, faces);
      Skinner skin(&m_field.get_moab());
      Range skin_edges;
      CHKERR skin.find_skin(0, faces, false, skin_edges);
      Range skin_verts;
      CHKERR moab.get_connectivity(skin_edges, skin_verts, true);
      skin_edges.merge(skin_verts);
      return skin_edges;
    };
 
    auto add_blockset = [&](const Range skin_ents) {
      MoFEMFunctionBegin;
      CHKERR meshsets_mng->addMeshset(BLOCKSET, 1);
      CHKERR meshsets_mng->addEntitiesToMeshset(BLOCKSET, 1, skin_ents);
      MoFEMFunctionReturn(0);
    };
 
    auto print_blocksets = [&]() {
      MoFEMFunctionBegin;
      for (auto &it : meshsets_mng->getMeshsetsMultindex())
        cout << it << endl;
      MoFEMFunctionReturn(0);
    };
 
    auto check_meshset = [&](const Range skin_ents) {
      MoFEMFunctionBegin;
      std::vector<EntityHandle> ents(skin_ents.size());
      std::copy(skin_ents.begin(), skin_ents.end(), ents.begin());
      const bool test = meshsets_mng->checkIfMeshsetContainsEntities(
          1, BLOCKSET, &*ents.begin(), ents.size());
      if (!test)
        SETERRQ(PETSC_COMM_SELF, MOFEM_ATOM_TEST_INVALID,
                "All entities should be in blockset");
      MoFEMFunctionReturn(0);
    };
 
    auto skin_ents = get_ents_on_mesh_skin();
    CHKERR add_blockset(skin_ents);
    CHKERR print_blocksets();
    CHKERR check_meshset(skin_ents);
  }
  CATCH_ERRORS;
 
  CHKERR MoFEM::Core::Finalize();
}