frohlich
e417903c23
Modified Files: SGGeometryTest.cxx SGIntersect.hxx SGLineSegment.hxx SGTriangle.hxx
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
// 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
|