68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
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// Copyright (c) 2000
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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)
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Cartesian_kernel/include/CGAL/Cartesian/Triangle_2.h $
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// $Id: Triangle_2.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Andreas Fabri, Herve Bronnimann
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#ifndef CGAL_CARTESIAN_TRIANGLE_2_H
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#define CGAL_CARTESIAN_TRIANGLE_2_H
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#include <CGAL/Cartesian/predicates_on_points_2.h>
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#include <CGAL/array.h>
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namespace CGAL {
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template <class R_>
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class TriangleC2
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{
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typedef typename R_::FT FT;
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typedef typename R_::Point_2 Point_2;
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typedef typename R_::Vector_2 Vector_2;
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typedef typename R_::Triangle_2 Triangle_2;
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typedef std::array<Point_2, 3> Rep;
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typedef typename R_::template Handle<Rep>::type Base;
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Base base;
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public:
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typedef R_ R;
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TriangleC2() {}
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TriangleC2(const Point_2 &p, const Point_2 &q, const Point_2 &r)
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: base(CGAL::make_array(p, q, r)) {}
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const Point_2 &
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vertex(int i) const
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{
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if (i>2) i = i%3;
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else if (i<0) i = (i%3) + 3;
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return (i==0) ? get_pointee_or_identity(base)[0] :
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(i==1) ? get_pointee_or_identity(base)[1] :
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get_pointee_or_identity(base)[2];
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}
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const Point_2 &
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operator[](int i) const
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{
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return vertex(i);
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}
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};
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} //namespace CGAL
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#endif // CGAL_CARTESIAN_TRIANGLE_2_H
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