/usr/include/simgear/math/SGRay.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 | // 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 SGRay_H
#define SGRay_H
template<typename T>
class SGRay {
public:
SGRay()
{ }
SGRay(const SGVec3<T>& origin, const SGVec3<T>& dir) :
_origin(origin), _direction(dir)
{ }
template<typename S>
explicit SGRay(const SGRay<S>& ray) :
_origin(ray.getOrigin()), _direction(ray.getDirection())
{ }
void set(const SGVec3<T>& origin, const SGVec3<T>& dir)
{ _origin = origin; _direction = dir; }
void setOrigin(const SGVec3<T>& origin)
{ _origin = origin; }
const SGVec3<T>& getOrigin() const
{ return _origin; }
void setDirection(const SGVec3<T>& direction)
{ _direction = direction; }
const SGVec3<T>& getDirection() const
{ return _direction; }
SGVec3<T> getNormalizedDirection() const
{ return normalize(getDirection()); }
SGVec3<T> getClosestPointTo(const SGVec3<T>& point)
{
SGVec3<T> u(getNormalizedDirection()),
v(point - _origin);
return (dot(u, v) * u) + _origin;
}
private:
SGVec3<T> _origin;
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 SGRay<T>& ray)
{
return s << "ray: origin = " << ray.getOrigin()
<< ", direction = " << ray.getDirection();
}
#endif
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