83 lines
3.3 KiB
C
83 lines
3.3 KiB
C
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// Copyright (c) 1997
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0+
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//
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//
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// Author(s) : Lutz Kettner <kettner@mpi-sb.mpg.de>
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#ifndef CGAL_HALFEDGEDS_HALFEDGE_MIN_BASE_H
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#define CGAL_HALFEDGEDS_HALFEDGE_MIN_BASE_H 1
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#include <CGAL/basic.h>
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namespace CGAL {
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template < class Refs>
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struct HalfedgeDS_halfedge_min_base_base {
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// Base_base will be used to access set_opposite(), which is
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// made private in the normal halfedge bases. Since halfedges
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// come always in pairs, managed by the HDS, the set_opposite()
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// member function is protected from the user.
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typedef Refs HalfedgeDS;
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typedef HalfedgeDS_halfedge_min_base_base<Refs> Base_base;
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typedef Tag_false Supports_halfedge_prev;
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typedef Tag_false Supports_halfedge_vertex;
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typedef Tag_false Supports_halfedge_face;
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typedef typename Refs::Vertex_handle Vertex_handle;
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typedef typename Refs::Vertex_const_handle Vertex_const_handle;
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typedef typename Refs::Halfedge_handle Halfedge_handle;
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typedef typename Refs::Halfedge_const_handle Halfedge_const_handle;
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typedef typename Refs::Face_handle Face_handle;
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typedef typename Refs::Face_const_handle Face_const_handle;
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typedef typename Refs::Vertex Vertex;
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typedef typename Refs::Face Face;
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private:
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Halfedge_handle opp;
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Halfedge_handle nxt;
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public:
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Halfedge_handle opposite() { return opp;}
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Halfedge_const_handle opposite() const { return opp;}
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void set_opposite( Halfedge_handle h) { opp = h;}
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Halfedge_handle next() { return nxt;}
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Halfedge_const_handle next() const { return nxt;}
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void set_next( Halfedge_handle h) { nxt = h;}
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bool is_border() const { return false;}
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// is always false as long as faces are not supported.
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};
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template < class Refs>
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class HalfedgeDS_halfedge_min_base
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: public HalfedgeDS_halfedge_min_base_base< Refs>
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{
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public:
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typedef typename Refs::Halfedge_handle Halfedge_handle;
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typedef HalfedgeDS_halfedge_min_base<Refs> Base;
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typedef HalfedgeDS_halfedge_min_base_base<Refs> Base_base;
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private:
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void set_opposite( Halfedge_handle h) { Base_base::set_opposite(h);}
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};
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} //namespace CGAL
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#endif // CGAL_HALFEDGEDS_HALFEDGE_MIN_BASE_H //
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// EOF //
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