ossimNitfRpcModel.h

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//*****************************************************************************
// FILE: ossimNitfRpcModel.h
//
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// AUTHOR: Oscar Kramer
//
// DESCRIPTION: Contains declaration of class ossimNitfRpcModel. This 
//    derived class implements the capability of reading Nitf RPC support
//    data.
//
// LIMITATIONS: None.
//
//*****************************************************************************
//  $Id: ossimNitfRpcModel.h 15766 2009-10-20 12:37:09Z gpotts $

#ifndef ossimNitfRpcModel_HEADER
#define ossimNitfRpcModel_HEADER

#include <ossim/base/ossimConstants.h>
#include <ossim/projection/ossimRpcModel.h>

class ossimFilename;
class ossimNitfImageHeader;

/*!****************************************************************************
 *
 * CLASS:  ossimNitfRpcModel
 *
 *****************************************************************************/
class OSSIM_DLL ossimNitfRpcModel : public ossimRpcModel
{
public:
   ossimNitfRpcModel();
   ossimNitfRpcModel(const ossimNitfRpcModel& rhs);
   ossimNitfRpcModel(const ossimFilename& nitfFile);
   virtual ossimObject* dup() const;

   virtual void  worldToLineSample(const ossimGpt& world_point,
                                   ossimDpt&       image_point) const;

   virtual void lineSampleHeightToWorld(const ossimDpt& image_point,
                                        const double&   heightEllipsoid,
                                        ossimGpt&       worldPoint) const;

   virtual bool saveState(ossimKeywordlist& kwl,
                          const char* prefix=0) const;

   virtual bool loadState(const ossimKeywordlist& kwl,
                          const char* prefix=0);

   virtual bool parseFile(const ossimFilename& nitfFile,
                          ossim_uint32 entryIndex=0);
   
   virtual bool parseImageHeader(const ossimNitfImageHeader* ih);
private:

   void getGsd(const ossimNitfImageHeader* ih);

   void getSensorID(const ossimNitfImageHeader* ih);

   bool getRpcData(const ossimNitfImageHeader* ih);

   ossim_float64 theDecimation;

   TYPE_DATA
};

#endif