OgrePlane.h

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

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// This file is based on material originally from:
// Geometric Tools, LLC
// Copyright (c) 1998-2010
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt


#ifndef __Plane_H__
#define __Plane_H__

#include "OgrePrerequisites.h"

#include "OgreVector3.h"

namespace Ogre {

    class _OgreExport Plane
    {
    public:
        Plane ();
        Plane (const Plane& rhs);
        Plane (const Vector3& rkNormal, Real fConstant);
        Plane (Real a, Real b, Real c, Real d);
        Plane (const Vector3& rkNormal, const Vector3& rkPoint);
        Plane (const Vector3& rkPoint0, const Vector3& rkPoint1,
            const Vector3& rkPoint2);

        enum Side
        {
            NO_SIDE,
            POSITIVE_SIDE,
            NEGATIVE_SIDE,
            BOTH_SIDE
        };

        Side getSide (const Vector3& rkPoint) const;

        Side getSide (const AxisAlignedBox& rkBox) const;

        Side getSide (const Vector3& centre, const Vector3& halfSize) const;

        Real getDistance (const Vector3& rkPoint) const;

        void redefine(const Vector3& rkPoint0, const Vector3& rkPoint1,
            const Vector3& rkPoint2);

        void redefine(const Vector3& rkNormal, const Vector3& rkPoint);

        Vector3 projectVector(const Vector3& v) const;

        Real normalise(void);

        Vector3 normal;
        Real d;

        bool operator==(const Plane& rhs) const
        {
            return (rhs.d == d && rhs.normal == normal);
        }
        bool operator!=(const Plane& rhs) const
        {
            return (rhs.d != d || rhs.normal != normal);
        }

        _OgreExport friend std::ostream& operator<< (std::ostream& o, const Plane& p);
    };

    typedef vector<Plane>::type PlaneList;
} // namespace Ogre

#endif