125 lines
3.9 KiB
C++
Executable File
125 lines
3.9 KiB
C++
Executable File
// Copyright (c) 2009 INRIA Sophia-Antipolis (France).
|
|
// All rights reserved.
|
|
//
|
|
// This file is part of CGAL (www.cgal.org).
|
|
// You can redistribute it and/or modify it under the terms of the GNU
|
|
// General Public License as published by the Free Software Foundation,
|
|
// either version 3 of the License, or (at your option) any later version.
|
|
//
|
|
// Licensees holding a valid commercial license may use this file in
|
|
// accordance with the commercial license agreement provided with the software.
|
|
//
|
|
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
|
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
// SPDX-License-Identifier: GPL-3.0+
|
|
//
|
|
//
|
|
// Author(s) : Stephane Tayeb
|
|
//
|
|
//******************************************************************************
|
|
// File Description :
|
|
//******************************************************************************
|
|
|
|
#ifndef CGAL_TRIANGLE_ACCESSOR_3_H
|
|
#define CGAL_TRIANGLE_ACCESSOR_3_H
|
|
|
|
#include <CGAL/license/Mesh_3.h>
|
|
|
|
|
|
#include <CGAL/Polyhedron_3.h>
|
|
#include <CGAL/Surface_mesh/Surface_mesh_fwd.h>
|
|
#include <CGAL/boost/graph/Graph_with_descriptor_with_graph.h>
|
|
|
|
namespace CGAL {
|
|
|
|
template <typename Polyhedron, typename K>
|
|
class Triangle_accessor_3 {
|
|
// This class template should never be instantiated, but only its
|
|
// specializations.
|
|
typedef typename Polyhedron::Error_bad_match Error_bad_match;
|
|
};
|
|
|
|
|
|
template < class K,class Items,
|
|
template < class T, class I, class A>
|
|
class T_HDS,
|
|
class Alloc>
|
|
class Triangle_accessor_3<Polyhedron_3<K,Items,T_HDS,Alloc>, K >
|
|
{
|
|
typedef Polyhedron_3<K,Items,T_HDS,Alloc> Polyhedron;
|
|
public:
|
|
typedef typename K::Triangle_3 Triangle_3;
|
|
typedef typename Polyhedron::Facet_const_iterator Triangle_iterator;
|
|
typedef typename Polyhedron::Facet_const_handle Triangle_handle;
|
|
|
|
Triangle_accessor_3() { }
|
|
|
|
Triangle_iterator triangles_begin(const Polyhedron& p) const
|
|
{
|
|
return p.facets_begin();
|
|
}
|
|
|
|
Triangle_iterator triangles_end(const Polyhedron& p) const
|
|
{
|
|
return p.facets_end();
|
|
}
|
|
|
|
Triangle_3 triangle(const Triangle_handle& handle) const
|
|
{
|
|
typedef typename K::Point_3 Point;
|
|
const Point& a = handle->halfedge()->vertex()->point();
|
|
const Point& b = handle->halfedge()->next()->vertex()->point();
|
|
const Point& c = handle->halfedge()->next()->next()->vertex()->point();
|
|
return Triangle_3(a,b,c);
|
|
}
|
|
};
|
|
|
|
|
|
template <class P, class K>
|
|
class Triangle_accessor_3<Graph_with_descriptor_with_graph<Surface_mesh<P> >, K >
|
|
{
|
|
typedef Graph_with_descriptor_with_graph<Surface_mesh<P> > Polyhedron;
|
|
public:
|
|
typedef typename K::Triangle_3 Triangle_3;
|
|
typedef typename boost::graph_traits<Polyhedron>::face_iterator Triangle_iterator;
|
|
typedef typename boost::graph_traits<Polyhedron>::face_iterator Triangle_handle;
|
|
|
|
Triangle_accessor_3() { }
|
|
|
|
Triangle_iterator triangles_begin(const Polyhedron& p) const
|
|
{
|
|
return faces(p).first;
|
|
}
|
|
|
|
Triangle_iterator triangles_end(const Polyhedron& p) const
|
|
{
|
|
return faces(p).second;
|
|
}
|
|
|
|
Triangle_3 triangle(const Triangle_handle& thandle) const
|
|
{
|
|
typedef typename boost::graph_traits<Polyhedron>::face_descriptor::Graph Graph;
|
|
typedef typename boost::graph_traits<Graph>::halfedge_descriptor halfedge_descriptor;
|
|
|
|
typename boost::graph_traits<Polyhedron>::face_descriptor handle = *thandle;
|
|
const Graph& g = *(handle.graph);
|
|
halfedge_descriptor hd = halfedge(handle.descriptor, g);
|
|
typedef typename boost::property_map<Graph,vertex_point_t>::type Vpm;
|
|
Vpm vpm = get(vertex_point, g);
|
|
typedef typename K::Point_3 Point;
|
|
const Point& a = get(vpm, target(hd,g));
|
|
const Point& b = get(vpm, target(next(hd,g),g));
|
|
const Point& c = get(vpm, target(next(next(hd,g),g),g));
|
|
return Triangle_3(a,b,c);
|
|
}
|
|
};
|
|
|
|
|
|
} // end namespace CGAL
|
|
|
|
|
|
#endif // POLYHEDRON_TRIANGLE_ACCESSOR_H
|