ossimGeoidImage.h

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//----------------------------------------------------------------------------
//
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author:  David Burken
//
// Description:
//
// Generic geoid source which uses an image handler for reading the grid.
// 
//----------------------------------------------------------------------------
#ifndef ossimGeoidImage_HEADER
#define ossimGeoidImage_HEADER 1
   
#include <ossim/base/ossimGeoid.h>
#include <ossim/base/ossimString.h>
#include <ossim/imaging/ossimImageData.h>
#include <ossim/imaging/ossimImageGeometry.h>
#include <ossim/imaging/ossimImageHandler.h>

class ossimFilename;

class OSSIM_DLL ossimGeoidImage : public ossimGeoid
{

public:
   
   ossimGeoidImage();

   virtual ~ossimGeoidImage();

   virtual bool open( const ossimFilename& file,
                      ossimByteOrder byteOrder=OSSIM_BIG_ENDIAN );

   virtual ossimString getShortName() const;
   
   void setShortName( const std::string& geoidTypeName );

   bool getMemoryMapFlag() const;

   void setMemoryMapFlag( bool flag );
   
   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix=0) const;
   
   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix=0);
   
   virtual double offsetFromEllipsoid(const ossimGpt& gpt);

   bool getEnableFlag() const;

   void setEnableFlag(bool flag);

protected:

   template <class T>
   double offsetFromEllipsoidTemplate(T dummy, const ossimGpt& gpt);

   ossimRefPtr<ossimImageGeometry> m_geom;
   ossimRefPtr<ossimImageHandler>  m_handler;
   ossimRefPtr<ossimImageData>     m_cacheTile;
   std::string                     m_connectionString;
   ossimString                     m_geoidTypeName;
   bool                            m_memoryMapFlag;
   bool                            m_enabledFlag;
   ossimIrect                      m_imageRect;
   ossimScalarType                 m_scalarType;
};

#endif /* #define ossimGeoidImage_HEADER 1 */