include/gdb/geodTdb.h

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/*********************************************************************
** Copyright (c) 1999 MAK Technologies, Inc.
** All rights reserved.
*********************************************************************/
/*********************************************************************
** $RCSfile: geodTdb.h,v $ $Revision: 1.11 $ $State: Exp $
*********************************************************************/
#ifndef geodTdb_H_
#define geodTdb_H_

// \file geodTdb.h
// \brief Contains the DtGeodeticReader class declaration.

#include "gdb/gdbDefines.h"
#include "gdb/terrainReader.h"

class DtTerrainInitializer;
class DtTerrainDatabase;
class DtFilename;

//
// The DtGeodeticReader class is responsible for creating a simple terrain with
// a geodetic coordinate system.  This class is essentially a simplified 
// version of the DtExtentReader.
class DT_DLL_gdb DtGeodeticReader : public DtTerrainReader
{
public:

   // default constructor
   DtGeodeticReader();

   // destructor
   virtual ~DtGeodeticReader();

private:
   // copy constructor & assignment operator not implemented.  This class is
   // not copyable or assignable
   DtGeodeticReader(const DtGeodeticReader& orig);
   DtGeodeticReader& operator=(const DtGeodeticReader& orig);

public:
   // 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);

   // 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);

   // Returns "geodetic"
   virtual const DtString dataType() const;

   // 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);

   static DtTerrainReader* create();

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

inline const DtString DtGeodeticReader::dataType() const
{
   return "geodetic";
}

#endif