mirror of https://github.com/CGAL/cgal
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
// Copyright (c) 1997 Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
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// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
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// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
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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; version 2.1 of the License.
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// See the file LICENSE.LGPL distributed with CGAL.
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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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//
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//
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// Author(s) : Lutz Kettner <kettner@inf.ethz.ch>
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#ifndef CGAL_MODIFIER_BASE_H
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#define CGAL_MODIFIER_BASE_H 1
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CGAL_BEGIN_NAMESPACE
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template <class R>
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class Modifier_base {
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// Abstract Base Class for protected internal access.
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// It defines the common interface for all modifiers.
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public:
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typedef R Representation;
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virtual void operator()( R& rep) = 0;
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// Postcondition: `rep' is a valid representation.
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virtual ~Modifier_base() {}
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};
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CGAL_END_NAMESPACE
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#endif // CGAL_MODIFIER_BASE_H //
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// EOF //
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