ParaRay.h

/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

This program is free software; 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 2 of the License, or (at your option) any later
version.

This program 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
#ifndef __Ray_H_
#define __Ray_H_

// Precompiler options


#include "ParaVector3.h"
#include "ParaPlaneBoundedVolume.h"

namespace ParaEngine {

    class Ray
    {
    protected:
        Vector3 mOrigin;
        Vector3 mDirection;
    public:
        Ray():mOrigin(Vector3::ZERO), mDirection(Vector3::UNIT_Z) {}
        Ray(const Vector3& origin, const Vector3& direction)
            :mOrigin(origin), mDirection(direction) {}

        void setOrigin(const Vector3& origin) {mOrigin = origin;} 
        const Vector3& getOrigin(void) const {return mOrigin;} 

        void setDirection(const Vector3& dir) {mDirection = dir;} 
        const Vector3& getDirection(void) const {return mDirection;} 

        Vector3 getPoint(float t) const { 
            return Vector3(mOrigin + (mDirection * t));
        }
        
        Vector3 operator*(float t) const { 
            return getPoint(t);
        };

        std::pair<bool, float> intersects(const Plane& p) const
        {
            return Math::intersects(*this, p);
        }
        std::pair<bool, float> intersects(const PlaneBoundedVolume& p) const
        {
            return Math::intersects(*this, p.planes, p.outside == Plane::POSITIVE_SIDE);
        }
        std::pair<bool, float> intersects(const Sphere& s) const
        {
            return Math::intersects(*this, s);
        }
        std::pair<bool, float> intersects(const AxisAlignedBox& box) const
        {
            return Math::intersects(*this, box);
        }

    };

}
#endif