maphorizon.h

使用stl技术,(还没看,是听说的)

/***************************************************************************
*                                                                         *
*   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.                       *
*                                                                         *
***************************************************************************/
/**
@file 
MapHorizon.h
@brief

http://www.dgp.toronto.edu/people/JamesStewart/papers/egwr97.html
there's a link to fast horizon computing

*/
#ifndef MapHorizon_H
#define MapHorizon_H

#include "Ogre.h"

namespace Ogre
{



/**
 * \ingroup Tool_MapSplitter
 *
 *
 * \par untested on linux
 *
 * \version 0.2
 * second version
 *
 * \date 06-07-2004
 *
 * \author [e-mail]
 *
 * \todo 
 *
 * \bug 
 * 
 */
class MapHorizon
{
public:
    MapHorizon();
    ~MapHorizon();

     /**
    * @remarks 
    * empty all maps and prepare for a new set of calculation.
    */
    void reset ();

    Image *getElevationCubeMap(uint sample);
    Image *getHorizon3DMap(uint sample);

    void calcHorizon3DMap (Real vscale, uint samples, float step);

    void calcElevationCubeMap (uint size);

private:

    uint CalcHorizonAtPoint (uint localx, uint localy, 
                            Vector3 direction, Real origin);

    Vector3 GetCubeVector(int side, uint x, uint y);

    Real mVscale;
    uint mSamples;
    uint mElevationSize;
    Real mElevationHeight; // max height on the heightmap
    uint mW;
    uint mH;

    float *hMap;
    uchar *mHeightMapData;
    std::vector <Image*> mHorizon;
    std::vector <Image*> mElevation;

};
}
#endif //MapHorizon_H