include/ascii/asciiTdb.h

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/*******************************************************************************
** Copyright (c) 1998 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: asciiTdb.h,v $ $Revision: 1.11 $ $State: Exp $
*******************************************************************************/

#ifndef asciiTdb_H_
#define asciiTdb_H_

#include "ascii/asciiDefines.h"
#include "shape/shapeDb.h"
#include "geometry/point.h"
#include <vlutil/vlUtil.h>

class DtList;
class DtMetafileRecord;
class DtFilename;
class DtSurfaceManager;
class DtVectorNetwork;
class DtSpecificationManager;

class DtTerrainInitializer;
class DtAsciiInitializer;


// class DtAsciiReader:
//
// Instances of DtAsciiReader are a list of DtDtedCells.
class DT_DLL_ascii DtAsciiReader : public DtShapeReader
{

public:

   // constructor
   DtAsciiReader();

   // destructor
   virtual ~DtAsciiReader();

   // 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);

   // 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 "ascii"
   virtual const DtString dataType() const;

   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);

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

   // assignment operator
   DtAsciiReader& operator=(const DtAsciiReader& orig);

   // Load a dted database (filename is the filename of a terrain metafile).
   // We need the path to this file in case the dted files specified in the
   // record are relative paths.
   virtual bool Load(const DtFilename& filename, const DtAsciiInitializer* i);
   virtual bool readAsPostedData(const DtFilename& path, const DtAsciiInitializer *i);
   virtual bool readAsTriangulated(const DtFilename& path, const DtAsciiInitializer *i);

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

protected:

   double   myOriginLat;
   double   myOriginLon;
   bool     mySetOriginFromFile;
};

#endif