mirror of https://github.com/CGAL/cgal
71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
// Copyright (c) 1997 Tel-Aviv University (Israel).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you may redistribute it under
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// the terms of the Q Public License version 1.0.
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// See the file LICENSE.QPL 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) : Baruch Zukerman <baruchzu@post.tau.ac.il>
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#ifndef CGAL_SEGMENT_ASSERTIONS_H
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#define CGAL_SEGMENT_ASSERTIONS_H
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CGAL_BEGIN_NAMESPACE
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template <class Traits_>
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class Segment_assertions
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{
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typedef Traits_ Traits_2;
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typedef typename Traits_2::Point_2 Point_2;
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typedef typename Traits_2::Kernel Kernel;
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typedef typename Kernel::Line_2 Line_2;
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typedef typename Traits_2::X_monotone_curve_2 X_monotone_curve_2;
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public:
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static bool _assert_is_point_on (const Point_2& pt,
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const X_monotone_curve_2& cv,
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Tag_true)
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{
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Traits_2 traits;
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return (traits.compare_y_at_x_2_object() (pt, cv) == EQUAL);
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}
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static bool _assert_is_point_on (const Point_2& pt,
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const X_monotone_curve_2& cv,
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Tag_false)
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{
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return (true);
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}
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static bool _assert_is_point_on (const Point_2& pt,
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const Line_2& l,
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Tag_true)
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{
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Kernel kernel;
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return (kernel.has_on_2_object() (l, pt));
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}
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static bool _assert_is_point_on (const Point_2& pt,
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const Line_2& l,
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Tag_false)
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{
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return (true);
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}
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};
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CGAL_END_NAMESPACE
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#endif
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