340 lines
14 KiB
C++
Executable File
340 lines
14 KiB
C++
Executable File
// Copyright (c) 1997
|
|
// Utrecht University (The Netherlands),
|
|
// ETH Zurich (Switzerland),
|
|
// INRIA Sophia-Antipolis (France),
|
|
// Max-Planck-Institute Saarbruecken (Germany),
|
|
// and Tel-Aviv University (Israel). 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 Lesser 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: LGPL-3.0+
|
|
//
|
|
//
|
|
// Author(s) : Lutz Kettner <kettner@mpi-sb.mpg.de>
|
|
|
|
#ifndef CGAL_HALFEDGEDS_HALFEDGE_BASE_H
|
|
#define CGAL_HALFEDGEDS_HALFEDGE_BASE_H 1
|
|
|
|
#include <CGAL/basic.h>
|
|
|
|
namespace CGAL {
|
|
|
|
template < class Refs, class TP, class TV, class TF>
|
|
struct HalfedgeDS_halfedge_base_base {
|
|
// Base_base will be used to access set_opposite(), which is
|
|
// made private in the normal halfedge bases. Since halfedges
|
|
// come always in pairs, managed by the HDS, the set_opposite()
|
|
// member function is protected from the user.
|
|
typedef Refs HalfedgeDS;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs,TP,TV,TF> Base_base;
|
|
typedef TP Supports_halfedge_prev;
|
|
typedef TV Supports_halfedge_vertex;
|
|
typedef TF Supports_halfedge_face;
|
|
typedef typename Refs::Vertex_handle Vertex_handle;
|
|
typedef typename Refs::Vertex_const_handle Vertex_const_handle;
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Halfedge_const_handle Halfedge_const_handle;
|
|
typedef typename Refs::Face_handle Face_handle;
|
|
typedef typename Refs::Face_const_handle Face_const_handle;
|
|
typedef typename Refs::Vertex Vertex;
|
|
typedef typename Refs::Face Face;
|
|
private:
|
|
Halfedge_handle opp;
|
|
Halfedge_handle nxt;
|
|
public:
|
|
Halfedge_handle opposite() { return opp;}
|
|
Halfedge_const_handle opposite() const { return opp;}
|
|
void set_opposite( Halfedge_handle h) { opp = h;}
|
|
Halfedge_handle next() { return nxt;}
|
|
Halfedge_const_handle next() const { return nxt;}
|
|
void set_next( Halfedge_handle h) { nxt = h;}
|
|
|
|
bool is_border() const { return false;}
|
|
// is always false as long as faces are not supported.
|
|
};
|
|
|
|
template < class Refs, class TP = Tag_true,
|
|
class TV = Tag_true,
|
|
class TF = Tag_true>
|
|
class HalfedgeDS_halfedge_base;
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_false, // prev
|
|
Tag_false, // vertex
|
|
Tag_false> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_false, Tag_false, Tag_false>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_false,Tag_false,Tag_false>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_false,Tag_false,Tag_false>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
};
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_true, // prev
|
|
Tag_false, // vertex
|
|
Tag_false> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_true, Tag_false, Tag_false>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Halfedge_const_handle Halfedge_const_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_true,Tag_false,Tag_false>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_true,Tag_false,Tag_false>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
Halfedge_handle prv;
|
|
public:
|
|
// the previous halfedge along the face.
|
|
Halfedge_handle prev() { return prv; }
|
|
Halfedge_const_handle prev() const { return prv; }
|
|
void set_prev( Halfedge_handle h) { prv = h; }
|
|
};
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_false, // prev
|
|
Tag_true, // vertex
|
|
Tag_false> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_false, Tag_true, Tag_false>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Vertex_handle Vertex_handle;
|
|
typedef typename Refs::Vertex_const_handle Vertex_const_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_false,Tag_true,Tag_false>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_false,Tag_true,Tag_false>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
Vertex_handle v;
|
|
public:
|
|
// the incident vertex.
|
|
Vertex_handle vertex() { return v; }
|
|
Vertex_const_handle vertex() const { return v; }
|
|
void set_vertex( Vertex_handle w) { v = w; }
|
|
};
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_false, // prev
|
|
Tag_false, // vertex
|
|
Tag_true> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_false, Tag_false, Tag_true>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Face_handle Face_handle;
|
|
typedef typename Refs::Face_const_handle Face_const_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_false,Tag_false,Tag_true>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_false,Tag_false,Tag_true>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
Face_handle f;
|
|
public:
|
|
// Explicit initialization of f to denote border halfedges
|
|
// is needed if Face_handle is a C style pointer.
|
|
HalfedgeDS_halfedge_base() : f( Face_handle()) {}
|
|
|
|
// the face to the left.
|
|
Face_handle face() { return f; }
|
|
Face_const_handle face() const { return f; }
|
|
void set_face( Face_handle g) { f = g; }
|
|
|
|
bool is_border() const { return f == Face_handle();}
|
|
// is true if `h' is a border halfedge.
|
|
};
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_true, // prev
|
|
Tag_true, // vertex
|
|
Tag_false> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_true, Tag_true, Tag_false>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Halfedge_const_handle Halfedge_const_handle;
|
|
typedef typename Refs::Vertex_handle Vertex_handle;
|
|
typedef typename Refs::Vertex_const_handle Vertex_const_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_true,Tag_true,Tag_false>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_true,Tag_true,Tag_false>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
Halfedge_handle prv;
|
|
Vertex_handle v;
|
|
public:
|
|
// the previous halfedge along the face.
|
|
Halfedge_handle prev() { return prv; }
|
|
Halfedge_const_handle prev() const { return prv; }
|
|
void set_prev( Halfedge_handle h) { prv = h; }
|
|
|
|
// the incident vertex.
|
|
Vertex_handle vertex() { return v; }
|
|
Vertex_const_handle vertex() const { return v; }
|
|
void set_vertex( Vertex_handle w) { v = w; }
|
|
};
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_true, // prev
|
|
Tag_false, // vertex
|
|
Tag_true> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_true, Tag_false, Tag_true>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Halfedge_const_handle Halfedge_const_handle;
|
|
typedef typename Refs::Face_handle Face_handle;
|
|
typedef typename Refs::Face_const_handle Face_const_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_true,Tag_false,Tag_true>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_true,Tag_false,Tag_true>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
Halfedge_handle prv;
|
|
Face_handle f;
|
|
public:
|
|
// Explicit initialization of f to denote border halfedges
|
|
// is needed if Face_handle is a C style pointer.
|
|
HalfedgeDS_halfedge_base() : f( Face_handle()) {}
|
|
|
|
// the previous halfedge along the face.
|
|
Halfedge_handle prev() { return prv; }
|
|
Halfedge_const_handle prev() const { return prv; }
|
|
void set_prev( Halfedge_handle h) { prv = h; }
|
|
|
|
// the face to the left.
|
|
Face_handle face() { return f; }
|
|
Face_const_handle face() const { return f; }
|
|
void set_face( Face_handle g) { f = g; }
|
|
|
|
bool is_border() const { return f == Face_handle();}
|
|
// is true if `h' is a border halfedge.
|
|
};
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_false, // prev
|
|
Tag_true, // vertex
|
|
Tag_true> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_false, Tag_true, Tag_true>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Vertex_handle Vertex_handle;
|
|
typedef typename Refs::Vertex_const_handle Vertex_const_handle;
|
|
typedef typename Refs::Face_handle Face_handle;
|
|
typedef typename Refs::Face_const_handle Face_const_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_false,Tag_true,Tag_true>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_false,Tag_true,Tag_true>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
Vertex_handle v;
|
|
Face_handle f;
|
|
public:
|
|
// Explicit initialization of f to denote border halfedges
|
|
// is needed if Face_handle is a C style pointer.
|
|
HalfedgeDS_halfedge_base() : f( Face_handle()) {}
|
|
|
|
// the incident vertex.
|
|
Vertex_handle vertex() { return v; }
|
|
Vertex_const_handle vertex() const { return v; }
|
|
void set_vertex( Vertex_handle w) { v = w; }
|
|
|
|
// the face to the left.
|
|
Face_handle face() { return f; }
|
|
Face_const_handle face() const { return f; }
|
|
void set_face( Face_handle g) { f = g; }
|
|
|
|
bool is_border() const { return f == Face_handle();}
|
|
// is true if `h' is a border halfedge.
|
|
};
|
|
|
|
template < class Refs >
|
|
class HalfedgeDS_halfedge_base< Refs,
|
|
Tag_true, // prev
|
|
Tag_true, // vertex
|
|
Tag_true> // face
|
|
: public HalfedgeDS_halfedge_base_base<
|
|
Refs, Tag_true, Tag_true, Tag_true>
|
|
{
|
|
public:
|
|
typedef typename Refs::Halfedge_handle Halfedge_handle;
|
|
typedef typename Refs::Halfedge_const_handle Halfedge_const_handle;
|
|
typedef typename Refs::Vertex_handle Vertex_handle;
|
|
typedef typename Refs::Vertex_const_handle Vertex_const_handle;
|
|
typedef typename Refs::Face_handle Face_handle;
|
|
typedef typename Refs::Face_const_handle Face_const_handle;
|
|
typedef HalfedgeDS_halfedge_base<Refs, Tag_true,Tag_true,Tag_true>
|
|
Base;
|
|
typedef HalfedgeDS_halfedge_base_base<Refs, Tag_true,Tag_true,Tag_true>
|
|
Base_base;
|
|
private:
|
|
void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
|
|
Halfedge_handle prv;
|
|
Vertex_handle v;
|
|
Face_handle f;
|
|
public:
|
|
// Explicit initialization of f to denote border halfedges
|
|
// is needed if Face_handle is a C style pointer.
|
|
HalfedgeDS_halfedge_base() : f( Face_handle()) {}
|
|
|
|
// the previous halfedge along the face.
|
|
Halfedge_handle prev() { return prv; }
|
|
Halfedge_const_handle prev() const { return prv; }
|
|
void set_prev( Halfedge_handle h) { prv = h; }
|
|
|
|
// the incident vertex.
|
|
Vertex_handle vertex() { return v; }
|
|
Vertex_const_handle vertex() const { return v; }
|
|
void set_vertex( Vertex_handle w) { v = w; }
|
|
|
|
// the face to the left.
|
|
Face_handle face() { return f; }
|
|
Face_const_handle face() const { return f; }
|
|
void set_face( Face_handle g) { f = g; }
|
|
|
|
bool is_border() const { return f == Face_handle();}
|
|
// is true if `h' is a border halfedge.
|
|
};
|
|
|
|
} //namespace CGAL
|
|
|
|
#endif // CGAL_HALFEDGEDS_HALFEDGE_BASE_H //
|
|
// EOF //
|