/usr/include/simgear/math/SGLineSegment.hxx is in libsimgear-dev 3.0.0-6+b2.
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 | // Copyright (C) 2006 Mathias Froehlich - Mathias.Froehlich@web.de
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
#ifndef SGLineSegment_H
#define SGLineSegment_H
template<typename T>
class SGLineSegment {
public:
SGLineSegment()
{ }
SGLineSegment(const SGVec3<T>& start, const SGVec3<T>& end) :
_start(start),
_direction(end - start)
{ }
template<typename S>
explicit SGLineSegment(const SGLineSegment<S>& lineSegment) :
_start(lineSegment.getStart()),
_direction(lineSegment.getDirection())
{ }
void set(const SGVec3<T>& start, const SGVec3<T>& end)
{ _start = start; _direction = end - start; }
const SGVec3<T>& getStart() const
{ return _start; }
SGVec3<T> getEnd() const
{ return _start + _direction; }
const SGVec3<T>& getDirection() const
{ return _direction; }
SGVec3<T> getNormalizedDirection() const
{ return normalize(getDirection()); }
SGVec3<T> getCenter() const
{ return _start + T(0.5)*_direction; }
SGLineSegment<T> transform(const SGMatrix<T>& matrix) const
{
SGLineSegment<T> lineSegment;
lineSegment._start = matrix.xformPt(_start);
lineSegment._direction = matrix.xformVec(_direction);
return lineSegment;
}
private:
SGVec3<T> _start;
SGVec3<T> _direction;
};
/// Output to an ostream
template<typename char_type, typename traits_type, typename T>
inline
std::basic_ostream<char_type, traits_type>&
operator<<(std::basic_ostream<char_type, traits_type>& s,
const SGLineSegment<T>& lineSegment)
{
return s << "line segment: start = " << lineSegment.getStart()
<< ", end = " << lineSegment.getEnd();
}
#endif
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