73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
// Copyright (C) 2006 Mathias Froehlich - Mathias.Froehlich@web.de
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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#ifndef SGRay_H
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#define SGRay_H
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template<typename T>
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class SGRay {
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public:
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SGRay()
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{ }
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SGRay(const SGVec3<T>& origin, const SGVec3<T>& dir) :
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_origin(origin), _direction(dir)
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{ }
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template<typename S>
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explicit SGRay(const SGRay<S>& ray) :
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_origin(ray.getOrigin()), _direction(ray.getDirection())
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{ }
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void set(const SGVec3<T>& origin, const SGVec3<T>& dir)
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{ _origin = origin; _direction = dir; }
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void setOrigin(const SGVec3<T>& origin)
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{ _origin = origin; }
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const SGVec3<T>& getOrigin() const
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{ return _origin; }
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void setDirection(const SGVec3<T>& direction)
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{ _direction = direction; }
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const SGVec3<T>& getDirection() const
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{ return _direction; }
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SGVec3<T> getNormalizedDirection() const
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{ return normalize(getDirection()); }
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SGVec3<T> getClosestPointTo(const SGVec3<T>& point)
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{
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SGVec3<T> u(getNormalizedDirection()),
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v(point - _origin);
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return (dot(u, v) * u) + _origin;
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}
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private:
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SGVec3<T> _origin;
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SGVec3<T> _direction;
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};
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/// Output to an ostream
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template<typename char_type, typename traits_type, typename T>
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inline
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std::basic_ostream<char_type, traits_type>&
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operator<<(std::basic_ostream<char_type, traits_type>& s,
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const SGRay<T>& ray)
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{
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return s << "ray: origin = " << ray.getOrigin()
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<< ", direction = " << ray.getDirection();
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}
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#endif
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