metaFlightReader.h

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/*******************************************************************************
** Copyright (c) 2025 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: mtFltTdb.h,v $ $Revision: 1.8 $ $State: Exp $
*******************************************************************************/

#ifndef metaFlightReader_H_
#define metaFlightReader_H_

//
// \file mtFltTdb.h
// \brief Represents a metaflight terrain reader.
//

#include "mtflt/mtfltDefines.h"
#include "gdb/gdbTerrainReader.h"
#include <libxml/xmlreader.h>

class DtList;
class DtMetafileRecord;
class DtFilename;
class DtTerrainInitializer;

// \brief Represents a metaflight terrain reader.
// This class represents a reader for the MetaFlight format. Metaflight files
// describe the structure, organization, file naming and coordinate systems of 
// all the datasets that comprise a single, more complex database.
class DT_DLL_mtflt DtMetaFlightReader : public DtTerrainReader
{

public:

   // Constructor
   DtMetaFlightReader();

   // Destructor
   virtual ~DtMetaFlightReader() override;

   // Save the database in dted format.
   virtual bool Save(const DtFilename& name);

   // Loads terrain database file named filename, returning the data in 
   // terrain.  The terrain pointer passed in must be initialized before calling 
   // loadTerrain.
   virtual bool loadTerrain(const DtFilename &filename,
                            DtTerrainDatabase *terrain) override;

   // Loads terrain database file named filename, returning the data in 
   // terrain.  The initializer object is used to pass in additional information
   // about the terrain to be loaded.  The terrain pointer passed in must be 
   // initialized before calling loadTerrain.
   virtual bool loadTerrain(const DtFilename &filename,
                            DtTerrainDatabase *terrain,
                            const DtTerrainInitializer *initializer) override;

   // Returns "metaflight"
   virtual const DtString dataType() const override;

   static DtTerrainReader* create();

   // Returns only the coordinate system that would define this database.  Should not load
   // any polygonal or vector information
   virtual Coordinate_System *
   coordinateSystem(const DtFilename &filename) override;

   virtual int optionalFileFlags(const DtFilename &filename) override {
      return 0;
   }

protected:
   
   // copy constructor
   DtMetaFlightReader(const DtMetaFlightReader& orig);

   // assignment operator
   DtMetaFlightReader& operator=(const DtMetaFlightReader& orig);
  
};

#endif