geoidDatum.h

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/*******************************************************************************
** Copyright (c) 1992-2025 MAK Technologies, Inc
** All rights reserved.
*******************************************************************************/
#pragma once
#include <vlutil/vlMachineTypes.h>
#include <vlutil/vlString.h>

#ifdef DtUSE_UTILITIES_NAMESPACE
namespace DtUSE_UTILITIES_NAMESPACE
{
#endif



   namespace GeographicLib
   {
      class Geoid;
   };


   enum DtGeoidType
   {
      DtNoGeoid = 0,
      DtEGM8430 = 1,   //EGM 84 30 minute resolution
      DtEGM8415 = 2,   //EGM 84 15 minute resolution
      DtEGM9615 = 3,   //EGM 96 15 minute resolution
      DtEGM9605 = 4,   //EGM 96 5 minute resolution
      DtEGM0805 = 5,   //EGM 2008 5 minute resolution
      DtEGM08025 = 6,  //EGM 2008 2.5 minute resolution
      DtEGM0801 = 7    //EGM 2008 1 minute resolution
   };

   extern DT_DLL_MATRIX DtGeoidType theGeoidDatumType;


   extern DT_DLL_MATRIX DtString theGeoidDataPath;

   class DT_DLL_MATRIX DtGeoidDatum
   {
   public:
      DtGeoidDatum(bool cubic = true, bool threadsafe = false);

      DtGeoidDatum(DtGeoidType geoidType, bool cubic = true, bool threadsafe = false);

      DtGeoidDatum(DtString geoidPath, bool cubic = true, bool threadsafe = false);



      ~DtGeoidDatum();

      void initGeoid(DtGeoidType geoidType, DtString geoidPath, bool cubic, bool threadsafe);

      virtual double undulation(double latitude, double longitude);

      virtual void cacheArea(double south, double west, double north, double east);

      virtual void cacheAll();

      virtual DtGeoidType geoidType();

      virtual DtString geoidPath();

      virtual bool cubic();

      virtual bool threadsafe();

   private:
      DtGeoidDatum& operator=(const DtGeoidDatum& src);
      
      DtGeoidDatum(const DtGeoidDatum& src);

   protected:
#ifdef ENABLE_GEOGRAPHICLIB
      GeographicLib::Geoid* myGeoid;
#else
      void* myGeoid;
#endif
      DtGeoidType myType;
      DtString myGeoidPath;
      bool myCubic;
      bool myThreadSafe;
   };

   extern DT_DLL_MATRIX void setTheGeoidDatumType(DtGeoidType newType);

   extern DT_DLL_MATRIX void setTheGeoidDatumPath(DtString newPath);

#ifdef DtUSE_UTILITIES_NAMESPACE
}
#endif