GeoTile.h

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#ifndef GeoTile_h_
#define GeoTile_h_
 
#include <string>
#include <map>
#ifdef _WINDOWS
    #pragma warning(disable : 4251)
#endif
//
#include <vapor/common.h>
#ifdef WINDOWS
    #pragma warning(disable : 4251)
#endif
namespace VAPoR {
class RENDER_API GeoTile {
public:
    GeoTile(size_t tile_width, size_t tile_height, size_t pixelsize, double min_lon, double min_lat, double max_lon, double max_lat);
    virtual ~GeoTile();
 
    //
    int Insert(std::string quadkey, const unsigned char *image);
 
    //
    virtual void LatLongToPixelXY(double lon, double lat, int lod, size_t &pixelX, size_t &pixelY) const = 0;
 
    virtual void PixelXYToLatLon(size_t pixelX, size_t pixelY, int lod, double &lon, double &lat) const = 0;
 
    void PixelXYToTileXY(size_t pixelX, size_t pixelY, size_t &tileX, size_t &tileY, size_t &tilePixelX, size_t &tilePixelY) const;
 
    void TileXYToPixelXY(size_t tileX, size_t tileY, size_t &pixelX, size_t &pixelY) const;
 
    //
    const unsigned char *GetTile(std::string quadkey) const;
 
    //
    const unsigned char *GetTile(size_t tileX, size_t tileY, int lod) const
    {
        std::string quadkey = TileXYToQuadKey(tileX, tileY, lod);
        return (GetTile(quadkey));
    }
 
    //
    int GetMap(size_t pixelX0, size_t pixelY0, size_t pixelX1, size_t pixelY1, int lod, unsigned char *map_image) const;
 
    //
    static std::string TileXYToQuadKey(size_t tileX, size_t tileY, int lod);
 
    static int QuadKeyToTileXY(std::string quadKey, size_t &tileX, size_t &tileY, int &lod);
 
    //
    void MapSize(int lod, size_t &nx, size_t &ny) const;
 
    //
    int MapSize(size_t pixelX0, size_t pixelY0, size_t pixelX1, size_t pixelY1, int lod, size_t &nx, size_t &ny) const;
 
    void GetLatLonExtents(double &minlon, double &minlat, double &maxlon, double &maxlat) const
    {
        minlon = _MinLongitude;
        minlat = _MinLatitude;
        maxlon = _MaxLongitude;
        maxlat = _MaxLatitude;
    }
 
    void GetTileSize(size_t &w, size_t &h) const
    {
        w = _tile_width;
        h = _tile_height;
    }
 
    //
    void LatLongRectToPixelRect(const double geoSW[2], const double geoNE[2], int lod, size_t pixelSW[2], size_t pixelNE[2]) const;
 
private:
    size_t                                 _pixel_size;
    std::map<std::string, unsigned char *> _tiles;
 
    void _CopyTileToMap(const unsigned char *tile, size_t tilePixelX0, size_t tilePixelY0, size_t tilePixelX1, size_t tilePixelY1, unsigned char *map, size_t pixelX0, size_t pixelX1, size_t nx,
                        size_t ny) const;
 
protected:
    size_t _tile_width;
    size_t _tile_height;
 
    double _MinLatitude;
    double _MaxLatitude;
    double _MinLongitude;
    double _MaxLongitude;
 
    double _Clip(double n, double minValue, double maxValue) const;
};
};    // namespace VAPoR
#endif