OgrePolygon.h

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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/

Copyright (c) 2000-2011 Torus Knot Software Ltd
Copyright (c) 2006 Matthias Fink, netAllied GmbH <matthias.fink@web.de>                             

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/
#ifndef __Polygon_H__
#define __Polygon_H__

#include "OgrePrerequisites.h"
#include "OgreVector3.h"


namespace Ogre
{


    class _OgreExport Polygon
    {

    public:
        typedef vector<Vector3>::type               VertexList;

        typedef multimap<Vector3, Vector3>::type        EdgeMap;
        typedef std::pair< Vector3, Vector3>        Edge;

    protected:
        VertexList      mVertexList;
        mutable Vector3 mNormal;
        mutable bool    mIsNormalSet;
        void updateNormal(void) const;


    public:
        Polygon();
        ~Polygon();
        Polygon( const Polygon& cpy );

        void insertVertex(const Vector3& vdata, size_t vertexIndex);
        void insertVertex(const Vector3& vdata);

        const Vector3& getVertex(size_t vertex) const;

        void setVertex(const Vector3& vdata, size_t vertexIndex);

        void removeDuplicates(void);

        size_t getVertexCount(void) const;

        const Vector3& getNormal(void) const;

        void deleteVertex(size_t vertex);

        bool isPointInside(const Vector3& point) const;

        void storeEdges(EdgeMap *edgeMap) const;

        void reset(void);

        bool operator == (const Polygon& rhs) const;

        bool operator != (const Polygon& rhs) const
        { return !( *this == rhs ); }

        _OgreExport friend std::ostream& operator<< ( std::ostream& strm, const Polygon& poly );

    };
}

#endif