/usr/include/CGAL/Segment_3.h is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 | // 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); 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; either version 3 of the License,
// or (at your option) any later version.
//
// 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.
//
// $URL$
// $Id$
//
//
// Author(s) : Andreas Fabri, Stefan Schirra
#ifndef CGAL_SEGMENT_3_H
#define CGAL_SEGMENT_3_H
#include <CGAL/assertions.h>
#include <boost/type_traits/is_same.hpp>
#include <CGAL/Kernel/Return_base_tag.h>
#include <CGAL/Bbox_3.h>
#include <CGAL/Dimension.h>
namespace CGAL {
template <class R_>
class Segment_3 : public R_::Kernel_base::Segment_3
{
typedef typename R_::RT RT;
typedef typename R_::FT FT;
typedef typename R_::Point_3 Point_3;
typedef typename R_::Vector_3 Vector_3;
typedef typename R_::Direction_3 Direction_3;
typedef typename R_::Line_3 Line_3;
typedef typename R_::Aff_transformation_3 Aff_transformation_3;
typedef Segment_3 Self;
CGAL_static_assertion((boost::is_same<Self, typename R_::Segment_3>::value));
public:
typedef Dimension_tag<3> Ambient_dimension;
typedef Dimension_tag<1> Feature_dimension;
typedef typename R_::Kernel_base::Segment_3 Rep;
const Rep& rep() const
{
return *this;
}
Rep& rep()
{
return *this;
}
typedef R_ R;
Segment_3() {}
Segment_3(const Rep& s)
: Rep(s) {}
Segment_3(const Point_3& sp, const Point_3& ep)
: Rep(typename R::Construct_segment_3()(Return_base_tag(), sp, ep)) {}
typename cpp11::result_of<typename R::Construct_source_3(Segment_3)>::type
source() const
{
return R_().construct_source_3_object()(*this);
}
typename cpp11::result_of<typename R::Construct_target_3(Segment_3)>::type
target() const
{
return R_().construct_target_3_object()(*this);
}
typename cpp11::result_of<typename R::Construct_source_3(Segment_3)>::type
start() const
{
return source();
}
typename cpp11::result_of<typename R::Construct_target_3(Segment_3)>::type
end() const
{
return target();
}
typename cpp11::result_of<typename R::Construct_min_vertex_3(Segment_3)>::type
min BOOST_PREVENT_MACRO_SUBSTITUTION () const;
typename cpp11::result_of<typename R::Construct_max_vertex_3(Segment_3)>::type
max BOOST_PREVENT_MACRO_SUBSTITUTION () const;
typename cpp11::result_of<typename R::Construct_vertex_3(Segment_3, int)>::type
vertex(int i) const;
typename cpp11::result_of<typename R::Construct_vertex_3(Segment_3, int)>::type
point(int i) const
{ return vertex(i); }
typename cpp11::result_of<typename R::Construct_vertex_3(Segment_3, int)>::type
operator[](int i) const
{ return vertex(i); }
Segment_3 transform(const Aff_transformation_3 &t) const
{
return Segment_3(t.transform(this->source()), t.transform(this->target()));
}
FT squared_length() const
{
return squared_distance(this->target(), this->source());
}
Vector_3 to_vector() const
{
return R().construct_vector_3_object()(*this);
}
bool has_on(const Point_3 &p) const
{ // TODO : use one predicate.
return R_().are_ordered_along_line_3_object()(source(),
p,
target());
}
Segment_3 opposite() const
{
return R().construct_opposite_segment_3_object()(*this);
}
Direction_3 direction() const
{
typename R::Construct_vector_3 construct_vector;
return Direction_3( construct_vector( source(), target()));
}
bool is_degenerate() const
{
return R().is_degenerate_3_object()(*this);
}
Bbox_3 bbox() const
{
return R().construct_bbox_3_object()(*this);
}
Line_3
supporting_line() const
{
return R().construct_line_3_object()(*this);
}
};
template < class R_ >
CGAL_KERNEL_INLINE
typename cpp11::result_of<typename R_::Construct_min_vertex_3( Segment_3<R_> ) >::type
Segment_3<R_>::min BOOST_PREVENT_MACRO_SUBSTITUTION () const
{
typename R_::Less_xyz_3 less_xyz;
return less_xyz(source(),target()) ? source() : target();
}
template < class R_ >
CGAL_KERNEL_INLINE
typename cpp11::result_of<typename R_::Construct_max_vertex_3( Segment_3<R_> ) >::type
Segment_3<R_>::max BOOST_PREVENT_MACRO_SUBSTITUTION () const
{
typename R_::Less_xyz_3 less_xyz;
return less_xyz(source(),target()) ? target() : source();
}
template < class R_ >
CGAL_KERNEL_INLINE
typename cpp11::result_of<typename R_::Construct_vertex_3( Segment_3<R_>, int ) >::type
Segment_3<R_>::vertex(int i) const
{
return (i%2 == 0) ? source() : target();
}
template < class R >
std::ostream &
operator<<(std::ostream &os, const Segment_3<R> &s)
{
switch(os.iword(IO::mode)) {
case IO::ASCII :
return os << s.source() << ' ' << s.target();
case IO::BINARY :
return os << s.source() << s.target();
default:
return os << "Segment_3(" << s.source() << ", " << s.target() << ")";
}
}
template < class R >
std::istream &
operator>>(std::istream &is, Segment_3<R> &s)
{
typename R::Point_3 p, q;
is >> p >> q;
if (is)
s = Segment_3<R>(p, q);
return is;
}
} //namespace CGAL
#endif // CGAL_SEGMENT_3_H
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