[C++知识库]CGAL——补洞

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#include <iostream>
#include <fstream>
#include <vector>

#ifdef min
#define fooWxfMin min
#undef min
#endif

#ifdef max
#define fooWxfMax max
#undef max
#endif

#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polygon_mesh_processing/triangulate_hole.h>
#include <CGAL/Polygon_mesh_processing/border.h>
#include <CGAL/boost/graph/graph_traits_PolyMesh_ArrayKernelT.h>

#include <OpenMesh/Core/Mesh/PolyMesh_ArrayKernelT.hh>

typedef CGAL::Exact_predicates_inexact_constructions_kernel		Kernel;
typedef OpenMesh::PolyMesh_ArrayKernelT< >						PolyMesh;
typedef boost::graph_traits<PolyMesh>::vertex_descriptor		vertex_descriptor;
typedef boost::graph_traits<PolyMesh>::halfedge_descriptor		halfedge_descriptor;
typedef boost::graph_traits<PolyMesh>::face_descriptor			face_descriptor;
namespace PMP = CGAL::Polygon_mesh_processing;

#ifdef fooWxfMin
#define min fooWxfMin
#undef fooWxfMin
#endif

#ifdef fooWxfMax
#define min fooWxfMax
#undef fooWxfMax
#endif


void holeFilling(PolyMesh& mesh)
{
	// Incrementally fill the holes
	unsigned int nb_holes = 0;
	for (halfedge_descriptor h : halfedges(mesh))
	{
		if (CGAL::is_border(h, mesh))
		{
			std::vector<face_descriptor>  patch_facets;
			std::vector<vertex_descriptor> patch_vertices;
			bool success = std::get<0>(PMP::triangulate_refine_and_fair_hole(mesh, h,
				std::back_inserter(patch_facets),
				std::back_inserter(patch_vertices),
				CGAL::parameters::vertex_point_map(get(CGAL::vertex_point, mesh)).geom_traits(Kernel())));

			CGAL_assertion(CGAL::is_valid_polygon_mesh(mesh));

			std::cout << "* FILL HOLE NUMBER " << ++nb_holes << std::endl;
			std::cout << "  Number of facets in constructed patch: " << patch_facets.size() << std::endl;
			std::cout << "  Number of vertices in constructed patch: " << patch_vertices.size() << std::endl;
			std::cout << "  Is fairing successful: " << success << std::endl;
		}
	}

	CGAL_assertion(CGAL::is_valid_polygon_mesh(mesh));
	std::cout << std::endl;
	std::cout << nb_holes << " holes have been filled" << std::endl;

	// OpenMesh::IO::write_mesh(mesh, "filled_OM.off");
}

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