mi32/suncalc.h

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#ifndef INC_MI32_SUNCALC_H 
#define INC_MI32_SUNCALC_H

#ifndef INC_MI32_DATETIME_H 
#include <mi32/datetime.h>
#endif

#ifndef INC_MI32_POINT_H 
#include <mi32/point.h>
#endif

class SUN_POSN_CALCULATOR {
   public: 
      SUN_POSN_CALCULATOR ( ) { };

      SUN_POSN_CALCULATOR ( 
         const DATETIME& datetime,
         const DPOINT2D& latlon
         );

      ~SUN_POSN_CALCULATOR () { }

      void SetLocation (const DPOINT2D& location);

      const DPOINT2D& GetLocation () const;

      void SetDateTime (const DATETIME& datetime);

      const DATETIME& GetDateTime() const; 

      ERRVALUE Calculate ( 
         double& SunAzimuth,        
         double& SunElevation    
         );

      double GetSunAzimuth ( ) { return (m_SunAzimuth); };

      double GetSunElevationAngle ( ) { return (m_SunElevation); };

   private:
      double CalcMeanObliquityOfEcliptic ( double &t );
      double CalcObliquityCorrection ( double &t );
      double CalcGeomMeanLongSun ( double &t );
      double CalcEccentricityEarthOrbit ( double &t );
      double CalcSunEqOfCenter ( double &t );
      double CalcGeomMeanAnomalySun ( double &t );
      double CalcEquationOfTime ( double &t );
      double CalcSunApparentLong ( double &t );
      double CalcSunDeclination ( double &t );
      double CalcSunTrueLong ( double &t );
      double CalcTimeJulianCent ( double );

      DPOINT2D m_Location;
      DATETIME m_DateTime;

      double m_SunAzimuth;
      double m_SunElevation;
   };

#endif

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