This file is indexed.

/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