ossimImageElevationDatabase.h

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//----------------------------------------------------------------------------
//
// File: ossimImageElevationDatabase.h
// 
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author:  David Burken
//
// Description: See description for class below.
//
//----------------------------------------------------------------------------
// $Id$

#ifndef ossimImageElevationDatabase_HEADER
#define ossimImageElevationDatabase_HEADER 1

#include <ossim/elevation/ossimElevationCellDatabase.h>
#include <ossim/base/ossimFileProcessorInterface.h>
#include <ossim/base/ossimConstants.h>
#include <ossim/base/ossimFilename.h>
#include <ossim/base/ossimGrect.h>
#include <ossim/base/ossimRefPtr.h>
#include <ossim/base/ossimRtti.h>
#include <map>

class ossimString;

class OSSIM_DLL ossimImageElevationDatabase :
   public ossimElevationCellDatabase, public ossimFileProcessorInterface
{
public:

   ossimImageElevationDatabase();

   virtual bool open(const ossimString& connectionString);

   virtual void close();

   virtual ossimObject* dup() const
   {
      ossimImageElevationDatabase* duped = new ossimImageElevationDatabase;
      duped->open(m_connectionString);
      return duped;
   }

   void mapRegion(const ossimGrect& region);

   virtual double getHeightAboveMSL(const ossimGpt& gpt);

   virtual double getHeightAboveEllipsoid(const ossimGpt&);
   
   virtual bool pointHasCoverage(const ossimGpt& gpt) const;


   virtual bool getAccuracyInfo(ossimElevationAccuracyInfo& info, const ossimGpt& gpt) const;


   //virtual double getAccuracyLE90(const ossimGpt& gpt) const;
   
   //virtual double getAccuracyCE90(const ossimGpt& gpt) const;

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

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

   void getBoundingRect(ossimGrect& rect) const;

   virtual void processFile(const ossimFilename& file);
   
   virtual std::ostream& print(std::ostream& out) const;

protected:
   virtual ~ossimImageElevationDatabase();

   virtual ossimRefPtr<ossimElevCellHandler> createCell(const ossimGpt& gpt);

   // virtual ossim_uint64 createId(const ossimGpt& pt) const;

   virtual ossimRefPtr<ossimElevCellHandler> getOrCreateCellHandler(const ossimGpt& gpt);

   virtual void remove(ossim_uint64 id);

private:

   // Private container to hold bounding rect, nominal GSD, and image handler.
   struct ossimImageElevationFileEntry
   {
      ossimImageElevationFileEntry();

      ossimImageElevationFileEntry(const ossimFilename& file);

      ossimImageElevationFileEntry(const ossimImageElevationFileEntry& copy_this);

      ossimFilename m_file;

      ossimGrect m_rect;
      ossimDpt m_nominalGSD; // post spacing at center

      bool m_loadedFlag;
   };  

   void loadFileMap();

   ossimImageElevationDatabase(const ossimImageElevationDatabase& copy_this);
   
   std::map<ossim_uint64, ossimImageElevationFileEntry> m_entryMap;
   ossim_uint64       m_lastMapKey;
   ossim_uint64       m_lastAccessedId;

   TYPE_DATA 
};

inline void ossimImageElevationDatabase::remove(ossim_uint64 id)
{
   std::map<ossim_uint64, ossimImageElevationFileEntry>::iterator entryIter = m_entryMap.find(id);
   if ( entryIter != m_entryMap.end() )
   {
      (*entryIter).second.m_loadedFlag = false;
   }
   ossimElevationCellDatabase::remove(id);
}

#endif /* ossimImageElevationDatabase_HEADER */