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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
// Copyright (c) 1999
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1/Kernel_23/include/CGAL/Triangle_3.h $
// $Id: include/CGAL/Triangle_3.h b26b07a1242 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Andreas Fabri, Stefan Schirra
#ifndef CGAL_TRIANGLE_3_H
#define CGAL_TRIANGLE_3_H
#include <CGAL/assertions.h>
#include <CGAL/Kernel/Return_base_tag.h>
#include <CGAL/Bbox_3.h>
#include <CGAL/Dimension.h>
#include <type_traits>
namespace CGAL {
template <class R_>
class Triangle_3 : public R_::Kernel_base::Triangle_3
{
typedef typename R_::Boolean Boolean;
typedef typename R_::RT RT;
typedef typename R_::FT FT;
typedef typename R_::Point_3 Point_3;
typedef typename R_::Plane_3 Plane_3;
typedef typename R_::Aff_transformation_3 Aff_transformation_3;
typedef Triangle_3 Self;
static_assert(std::is_same<Self, typename R_::Triangle_3>::value);
public:
typedef Dimension_tag<3> Ambient_dimension;
typedef Dimension_tag<2> Feature_dimension;
typedef typename R_::Kernel_base::Triangle_3 Rep;
const Rep& rep() const
{
return *this;
}
Rep& rep()
{
return *this;
}
typedef R_ R;
Triangle_3() {}
Triangle_3(const Rep& t)
: Rep(t) {}
Triangle_3(const Point_3& p, const Point_3& q, const Point_3& r)
: Rep(typename R::Construct_triangle_3()(Return_base_tag(), p, q, r)) {}
Triangle_3 transform(const Aff_transformation_3 &t) const
{
return Triangle_3(t.transform(this->vertex(0)),
t.transform(this->vertex(1)),
t.transform(this->vertex(2)));
}
Plane_3 supporting_plane() const
{
return R().construct_supporting_plane_3_object()(*this);
}
Boolean has_on(const Point_3 &p) const
{
return R().has_on_3_object()(*this, p);
}
decltype(auto)
vertex(int i) const
{
return R().construct_vertex_3_object()(*this, i);
}
decltype(auto)
operator[](int i) const
{
return vertex(i);
}
Boolean is_degenerate() const
{
return R().is_degenerate_3_object()(*this);
}
Bbox_3
bbox() const
{
return R().construct_bbox_3_object()(*this);
}
decltype(auto) squared_area() const
{
return R().compute_squared_area_3_object()(*this);
}
};
template < class R >
std::ostream &
operator<<(std::ostream &os, const Triangle_3<R> &t)
{
switch(IO::get_mode(os)) {
case IO::ASCII :
return os << t[0] << ' ' << t[1] << ' ' << t[2];
case IO::BINARY :
return os << t[0] << t[1] << t[2];
default:
os << "Triangle_3(" << t[0] << ", " << t[1] << ", " << t[2] <<")";
return os;
}
}
template < class R >
std::istream &
operator>>(std::istream &is, Triangle_3<R> &t)
{
typename R::Point_3 p, q, r;
is >> p >> q >> r;
if (is)
t = Triangle_3<R>(p, q, r);
return is;
}
} //namespace CGAL
#endif // CGAL_TRIANGLE_3_H
|
