GeoImageTMS.h

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#ifndef _GeoImageTMS_h_
#define _GeoImageTMS_h_
 
#ifdef WIN32
    #include <geotiff/xtiffio.h>
    #include <geotiff/geotiff.h>
#else
    #include <xtiffio.h>
    #include <geotiff.h>
#endif
#include <sstream>
#include <fstream>
#include <sys/stat.h>
#include <vapor/MyBase.h>
#include <vapor/UDUnitsClass.h>
#include "GeoTileMercator.h"
#include "GeoImage.h"
 
namespace VAPoR {
 
//
class RENDER_API GeoImageTMS : public GeoImage {
public:
    GeoImageTMS();
    virtual ~GeoImageTMS();
 
    int Initialize(string path, vector<double> times);
 
    void SetLOD(int lod);
 
    unsigned char *GetImage(size_t ts, size_t &width, size_t &height);
 
    unsigned char *GetImage(size_t ts, const double pcsExtentsReq[4], string proj4StringReq, size_t maxWidthReq, size_t maxHeightReq, double pcsExtentsImg[4], double geoCornersImg[8],
                            string &proj4StringImg, size_t &width, size_t &height);
 
private:
    string _dir;           // path to TMS directory
    int    _maxLOD;        // Maximum LOD available in TMS
    int    _currentLOD;    // Current LOD in TMS
 
    unsigned char *_texture;    // storage for texture image
    size_t         _textureSize;
 
    unsigned char *_tileBuf;    // storage for a single tile
    size_t         _tileBufSize;
 
    GeoTileMercator *_geotile;
 
    string _defaultProj4String;    // proj4 string for global mercator
 
    int _tileSize(string dir, size_t tileX, size_t tileY, int lod, size_t &w, size_t &h);
 
    int _tileRead(string dir, size_t tileX, size_t tileY, int lod, unsigned char *tile);
 
    int _getBestLOD(const double myGeoExtentsData[4], int maxWidthReq, int maxHeightReq) const;
 
    int _getMap(const size_t pixelSW[2], const size_t pixelNE[2], int lod, unsigned char *texture);
};
 
};    // namespace VAPoR
#endif