shapeReader.h

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

#include "shape/shapeDefines.h"
#include "gdb/gdbTerrainReader.h"
#include "geometry/point.h"
#include <vlutil/vlUtil.h>
#include <vlutil/vlConfig.h>
#include <list>

class DtMetafileRecord;
class DtFilename;
class DtSurfaceManager;
class DtVectorNetwork;

//class DtTerrainInitializer;
class DtShapeInitializer;
class DtShapeTerrainFile;

//
// Instances of DtShapeReader are responsible for importing polygonal shapefiles
// into the GDB format..
class DT_DLL_shape DtShapeReader : public DtTerrainReader
{

public:

   typedef std::list<DtShapeTerrainFile*> DtShapeTerrainFileContainer;
   typedef DtShapeTerrainFileContainer::iterator DtShapeTerrainFileIter;
   typedef DtShapeTerrainFileContainer::const_iterator DtShapeTerrainFileConstIter;

   // constructor
   DtShapeReader();

   // destructor
   virtual ~DtShapeReader() override;

   // 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 "shape"
   virtual const DtString dataType() const override;

   virtual int surfaceIDByElevation(double z);

   virtual DtPoint &origin();

   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
   DtShapeReader(const DtShapeReader& orig);

   // assignment operator
   DtShapeReader& operator=(const DtShapeReader& 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 DtShapeInitializer* i);

   virtual bool importPolys();
   virtual bool importPostElevationData(const DtShapeInitializer* i);

   virtual void clean();

protected:

   double               myThresholdForSeaLevel;
   
   double               myMaxHigh;
   double               myMinHigh;
   
   double               myLenHigh;
   
   DtShapeTerrainFileContainer myFileContainer;

   DtPoint              myOriginToSubstract;

   static const unsigned int theNumColorGradations;

};

#endif