MeshLib::Mesh* MshEditor::getMeshSurface(const MeshLib::Mesh &mesh, const double* dir)
{
INFO ("Extracting mesh surface...");
const std::vector<MeshLib::Element*> all_elements (mesh.getElements());
const std::vector<MeshLib::Node*> all_nodes (mesh.getNodes());
std::vector<MeshLib::Element*> sfc_elements;
get2DSurfaceElements(all_elements, sfc_elements, dir, mesh.getDimension());
std::vector<MeshLib::Node*> sfc_nodes;
std::vector<unsigned> node_id_map(mesh.getNNodes());
get2DSurfaceNodes(all_nodes, sfc_nodes, sfc_elements, node_id_map);
// create new elements vector with newly created nodes
const size_t nNewElements (sfc_elements.size());
std::vector<MeshLib::Element*> new_elements(sfc_elements.size());
for (unsigned i=0; i<nNewElements; ++i)
{
MeshLib::Element* elem (sfc_elements[i]);
if (elem->getType() == MshElemType::TRIANGLE) {
MeshLib::Node** tri_nodes = new MeshLib::Node*[3];
for (unsigned k(0); k<3; k++)
tri_nodes[k] = sfc_nodes[node_id_map[elem->getNode(k)->getID()]];
new_elements[i] = new MeshLib::Tri(tri_nodes);
} else {
MeshLib::Node** quad_nodes = new MeshLib::Node*[4];
for (unsigned k(0); k<3; k++)
quad_nodes[k] = sfc_nodes[node_id_map[elem->getNode(k)->getID()]];
new_elements[i] = new MeshLib::Quad(quad_nodes);
}
delete sfc_elements[i];
}
return new Mesh("SurfaceMesh", sfc_nodes, new_elements);
}
void Array<T>::resize(Idx size) {
BOOST_CONCEPT_ASSERT((boost::Assignable<T>));
std::unique_ptr<T[]> new_elements(new T[size]);
for(Idx i = 0; i < size_ && i < size; ++i) {
new_elements[i] = elements_[i];
}
size_ = size;
elements_ = std::move(new_elements);
}
TEST(MeshLib, Duplicate)
{
MeshLib::Mesh* mesh (MeshLib::MeshGenerator::generateRegularQuadMesh(10, 5, 1));
std::vector<MeshLib::Node*> new_nodes (MeshLib::copyNodeVector(mesh->getNodes()));
std::vector<MeshLib::Element*> new_elements (MeshLib::copyElementVector(mesh->getElements(), new_nodes));
MeshLib::Mesh new_mesh ("new", new_nodes, new_elements);
ASSERT_EQ (mesh->getNElements(), new_mesh.getNElements());
ASSERT_EQ (mesh->getNNodes(), new_mesh.getNNodes());
std::vector<std::size_t> del_idx(1,1);
MeshLib::removeMeshNodes(*mesh, del_idx);
ASSERT_EQ (mesh->getNElements(), new_mesh.getNElements()-2);
ASSERT_EQ (mesh->getNNodes(), new_mesh.getNNodes()-2);
ASSERT_DOUBLE_EQ (4.0, MathLib::sqrDist(*mesh->getNode(0), *new_mesh.getNode(0)));
ASSERT_DOUBLE_EQ (0.0, MathLib::sqrDist(*mesh->getNode(0), *new_mesh.getNode(2)));
ASSERT_DOUBLE_EQ (4.0, MathLib::sqrDist(*mesh->getElement(0)->getNode(0), *new_mesh.getElement(0)->getNode(0)));
ASSERT_DOUBLE_EQ (0.0, MathLib::sqrDist(*mesh->getElement(0)->getNode(0), *new_mesh.getElement(2)->getNode(0)));
}