GroundGrid.h

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#ifndef GroundGrid_h
#define GroundGrid_h

namespace Isis {
  class Angle;
  class Latitude;
  class Longitude;
  class PvlGroup;
  class Progress;
  class UniversalGroundMap;

  class GroundGrid {
    public:
      GroundGrid(UniversalGroundMap *gmap, 
                 bool splitLatLon,
                 unsigned int width, 
                 unsigned int height);

      virtual ~GroundGrid();

      void CreateGrid(Latitude baseLat, 
                      Longitude baseLon,
                      Angle latInc,  
                      Angle lonInc,
                      Progress *progress = 0);

      void CreateGrid(Latitude baseLat, 
                      Longitude baseLon,
                      Angle latInc,  
                      Angle lonInc,
                      Progress *progress,
                      Angle latRes, 
                      Angle lonRes);

      void WalkBoundary();

      void SetGroundLimits(Latitude minLat, 
                           Longitude minLon, 
                           Latitude maxLat,
                           Longitude maxLon);

      bool PixelOnGrid(int x, int y);
      bool PixelOnGrid(int x, int y, bool latGrid);

      PvlGroup *GetMappingGroup();

    protected:
      virtual bool GetXY(Latitude lat, Longitude lon,
                         unsigned int &x, unsigned int &y);

      UniversalGroundMap *GroundMap();

    private:
      void SetGridBit(unsigned int x, unsigned int y, bool latGrid);
      bool GetGridBit(unsigned int x, unsigned int y, bool latGrid);
      void DrawLineOnGrid(unsigned int x1, unsigned int y1,
                          unsigned int x2, unsigned int y2,
                          bool isLatLine);


      char *p_grid; 
      char *p_latLinesGrid; 
      char *p_lonLinesGrid; 
      unsigned int p_width; 
      unsigned int p_height; 
      unsigned long p_gridSize; 
      UniversalGroundMap *p_groundMap; 

      Latitude  *p_minLat; 
      Longitude *p_minLon; 
      Latitude  *p_maxLat; 
      Longitude *p_maxLon; 

      PvlGroup *p_mapping;

      double p_defaultResolution; 

      bool p_reinitialize; 
  };

}


#endif