1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
// Copyright (c) 2000 Utrecht University (The Netherlands),
// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
// 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; version 2.1 of the License.
// See the file LICENSE.LGPL distributed with CGAL.
//
// 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: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.2-branch/Cartesian_kernel/include/CGAL/Cartesian/Triangle_2.h $
// $Id: Triangle_2.h 28567 2006-02-16 14:30:13Z lsaboret $
//
//
// Author(s) : Andreas Fabri, Herve Bronnimann
#ifndef CGAL_CARTESIAN_TRIANGLE_2_H
#define CGAL_CARTESIAN_TRIANGLE_2_H
#include <CGAL/Threetuple.h>
#include <CGAL/Cartesian/predicates_on_points_2.h>
CGAL_BEGIN_NAMESPACE
template <class R_>
class TriangleC2
{
typedef typename R_::FT FT;
typedef typename R_::Point_2 Point_2;
typedef typename R_::Vector_2 Vector_2;
typedef typename R_::Triangle_2 Triangle_2;
typedef typename R_::Aff_transformation_2 Aff_transformation_2;
typedef Threetuple<Point_2> Rep;
typedef typename R_::template Handle<Rep>::type Base;
Base base;
public:
typedef R_ R;
TriangleC2() {}
TriangleC2(const Point_2 &p, const Point_2 &q, const Point_2 &r)
: base(p, q, r) {}
const Point_2 &
vertex(int i) const
{
if (i>2) i = i%3;
else if (i<0) i = (i%3) + 3;
return (i==0) ? get(base).e0 :
(i==1) ? get(base).e1 :
get(base).e2;
}
const Point_2 &
operator[](int i) const
{
return vertex(i);
}
Triangle_2
transform(const Aff_transformation_2 &t) const
{
return Triangle_2(t.transform(vertex(0)),
t.transform(vertex(1)),
t.transform(vertex(2)));
}
};
#ifndef CGAL_NO_OSTREAM_INSERT_TRIANGLEC2
template < class R >
std::ostream &
operator<<(std::ostream &os, const TriangleC2<R> &t)
{
switch(os.iword(IO::mode)) {
case IO::ASCII :
return os << t[0] << ' ' << t[1] << ' ' << t[2];
case IO::BINARY :
return os << t[0] << t[1] << t[2];
default:
return os<< "TriangleC2(" << t[0] << ", "
<< t[1] << ", " << t[2] <<")";
}
}
#endif // CGAL_NO_OSTREAM_INSERT_TRIANGLEC2
#ifndef CGAL_NO_ISTREAM_EXTRACT_TRIANGLEC2
template < class R >
std::istream &
operator>>(std::istream &is, TriangleC2<R> &t)
{
typename R::Point_2 p, q, r;
is >> p >> q >> r;
if (is)
t = TriangleC2<R>(p, q, r);
return is;
}
#endif // CGAL_NO_ISTREAM_EXTRACT_TRIANGLEC2
CGAL_END_NAMESPACE
#endif // CGAL_CARTESIAN_TRIANGLE_2_H
|
