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simplify the code for MSVC 2019 

See the ICE at https://cgal.geometryfactory.com/CGAL/testsuite/CGAL-6.1-Ic-160/Constrained_triangulation_3/TestReport_Christo_MSVC-2019-Community-Release.gz
This commit is contained in:
Laurent Rineau 2025-05-22 18:55:16 +02:00
parent 2db51dbc85
commit ed4901c484
1 changed files with 11 additions and 9 deletions
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20
Surface_mesh/include/CGAL/boost/graph/properties_Surface_mesh.h
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@ -378,21 +378,23 @@ template <typename Point,
typename... Default_value_args> typename... Default_value_args>
auto get(Dynamic_property_tag, const Surface_mesh<Point>& sm, Default_value_args&&... default_value_args) { auto get(Dynamic_property_tag, const Surface_mesh<Point>& sm, Default_value_args&&... default_value_args) {
using graph_traits = boost::graph_traits<Surface_mesh<Point>>; using graph_traits = boost::graph_traits<Surface_mesh<Point>>;
using vertex_descriptor = typename graph_traits::vertex_descriptor;
using face_descriptor = typename graph_traits::face_descriptor; using face_descriptor = typename graph_traits::face_descriptor;
using edge_descriptor = typename graph_traits::edge_descriptor; using edge_descriptor = typename graph_traits::edge_descriptor;
using halfedge_descriptor = typename graph_traits::halfedge_descriptor; using halfedge_descriptor = typename graph_traits::halfedge_descriptor;
auto num_elements = CGAL::overloaded{
[&](vertex_descriptor) { return num_vertices(sm); },
[&](halfedge_descriptor) { return num_halfedges(sm); },
[&](edge_descriptor) { return num_edges(sm); },
[&](face_descriptor) { return num_faces(sm); }
};
using descriptor = typename Dynamic_property_tag::template property_map<Surface_mesh<Point>>::descriptor; using descriptor = typename Dynamic_property_tag::template property_map<Surface_mesh<Point>>::descriptor;
using value_type = typename Dynamic_property_tag::value_type; using value_type = typename Dynamic_property_tag::value_type;
auto num_elements = num_vertices(sm);
if constexpr(std::is_same_v<descriptor, edge_descriptor>) {
num_elements = num_edges(sm);
} else if constexpr(std::is_same_v<descriptor, halfedge_descriptor>) {
num_elements = num_halfedges(sm);
} else if constexpr(std::is_same_v<descriptor, face_descriptor>) {
num_elements = num_faces(sm);
}
return CGAL::internal::Dynamic_with_index<descriptor, value_type>( return CGAL::internal::Dynamic_with_index<descriptor, value_type>(
num_elements(descriptor{}), num_elements, std::forward<Default_value_args>(default_value_args)...);
std::forward<Default_value_args>(default_value_args)...);
} }
// implementation detail: required by Dynamic_property_map_deleter // implementation detail: required by Dynamic_property_map_deleter