fltMetafileRecord.h

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/*******************************************************************************
** Copyright (c) 2025 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: fltMfRec.h,v $ $Revision: 1.17 $ $State: Exp $
*******************************************************************************/
#ifndef fltMetafileRecord_H_
#define fltMetafileRecord_H_

// \file fltMfRec.h
// \brief Contains the DtFltMetafileRecord class declaration.

#include "terrainDbFactory/terrainDbFactoryDefines.h"
#include "terrainDbFactory/terrainMetafileRecord.h"
#include <iosfwd>

//
// DtFltMetafileRecord represents the parameters that can be specified in a 
// DtFltMetafileRecord, usually in a .map file, which is used to specify how and
// what OpenFlight files to import into a terrain.
class DT_DLL_terrainDbFactory DtFltMetafileRecord : public DtTerrainMetafileRecord
{

public:

   // default constructor.
   DtFltMetafileRecord();

   // destructor
   virtual ~DtFltMetafileRecord() override;

   // copy constructor
   DtFltMetafileRecord(const DtFltMetafileRecord& orig);

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

   // Returns "flt".
   virtual DtString recordTypeName() const override;

   // Read self from stream.
   virtual bool get(std::istream &stream) override;
   
   // identifies a token or passes it to the parent class.
   virtual bool processToken(std::istream &stream, DtString &token) override;

   static DtMetafileRecord* create();

protected:

   // Write self to stream.
   virtual bool writeAttributes(std::ostream &stream) const override;
   virtual bool getAttribute(const DtString attrName, DtString &value,
                            unsigned index = 0) override;
   virtual bool setToken(const DtString &token, const DtString value) override;

protected:

   static const DtString theParameterFile;
   static const DtString theRefEllipsoidMajor;
   static const DtString theRefEllipsoidMinor;
   static const DtString theDatumShift;
   static const DtString theProjectionCentralScale;
   static const DtString theNumberOfExternalLevelsToKeep;
   static const DtString theLodDistance;
   static const DtString theLowLodDistance;
   static const DtString theRefInverseFlattening;
   static const DtString theUsePath;
   static const DtString theDefaultSwitchNodeChildIndex;
};

#endif