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Merge pull request #6492 from MaelRL/P3M3-Better_output-GF 

Fix C3T3_facets_to_TM conversion for periodic meshes
This commit is contained in:
Laurent Rineau 2022-04-27 16:32:01 +02:00
parent e11f5dab65 ab03816081
commit 6f6eded0e1
1 changed files with 18 additions and 16 deletions
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32
Mesh_3/include/CGAL/facets_in_complex_3_to_triangle_mesh.h
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@ -18,16 +18,18 @@
#include <CGAL/array.h>
#include <CGAL/boost/graph/Euler_operations.h>
#include <CGAL/Cartesian_converter.h>
#include <CGAL/Kernel_traits.h>
#include <CGAL/Polygon_mesh_processing/orient_polygon_soup.h>
#include <CGAL/Polygon_mesh_processing/polygon_soup_to_polygon_mesh.h>
#include <CGAL/Time_stamper.h>
#include <boost/unordered_map.hpp>
#include <boost/tuple/tuple.hpp>
#include <algorithm>
#include <cstddef>
#include <iterator>
#include <unordered_map>
#include <vector>
namespace CGAL {
@ -61,22 +63,24 @@ void facets_in_complex_3_to_triangle_soup(const C3T3& c3t3,
typedef typename C3T3::Triangulation Tr;
typedef typename Tr::Vertex_handle Vertex_handle;
typedef typename Tr::Cell_handle Cell_handle;
typedef typename Tr::Weighted_point Weighted_point;
typedef typename C3T3::Facets_in_complex_iterator Ficit;
typedef CGAL::Hash_handles_with_or_without_timestamps Hash_fct;
typedef boost::unordered_map<Vertex_handle, std::size_t, Hash_fct> VHmap;
typedef std::unordered_map<Point_3, std::size_t> PIM;
typedef typename C3T3::size_type size_type;
// triangulation point to range point
CGAL::Cartesian_converter<typename CGAL::Kernel_traits<typename Tr::Geom_traits::Point_3>::type,
typename CGAL::Kernel_traits<Point_3>::type> t2r;
size_type nf = c3t3.number_of_facets_in_complex();
faces.reserve(faces.size() + nf);
points.reserve(points.size() + nf/2); // approximating Euler
VHmap vh_to_ids;
PIM p_to_ids;
std::size_t inum = 0;
for(Ficit fit = c3t3.facets_in_complex_begin(),
@ -95,23 +99,21 @@ void facets_in_complex_3_to_triangle_soup(const C3T3& c3t3,
for(std::size_t i=1; i<4; ++i)
{
typename VHmap::iterator map_entry;
bool is_new;
Vertex_handle v = c->vertex((s+i)&3);
CGAL_assertion_code(typedef typename Tr::Vertex_handle Vertex_handle;)
CGAL_assertion_code(Vertex_handle v = c->vertex((s+i)&3);)
CGAL_assertion(v != Vertex_handle() && !c3t3.triangulation().is_infinite(v));
boost::tie(map_entry, is_new) = vh_to_ids.insert(std::make_pair(v, inum));
if(is_new)
const Weighted_point& wp = c3t3.triangulation().point(c, (s+i)&3);
const Point_3& bp = t2r(c3t3.triangulation().geom_traits().construct_point_3_object()(wp));
auto insertion_res = p_to_ids.emplace(bp, inum);
if(insertion_res.second) // new point
{
const Weighted_point& p = c3t3.triangulation().point(c, (s+i)&3);
const Point_3 bp = Point_3(CGAL::to_double(p.x()),
CGAL::to_double(p.y()),
CGAL::to_double(p.z()));
points.push_back(bp);
++inum;
}
f[i-1] = map_entry->second;
f[i-1] = insertion_res.first->second;
}
if(export_all_facets)