NormalGravity.h

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#pragma once

namespace NETGeographicLib
{
    ref class Geocentric;
    public ref class NormalGravity
    {
        private:
        // a pointer to the unmanaged GeographicLib::NormalGravity.
        const GeographicLib::NormalGravity* m_pNormalGravity;

        // the finalizer frees the unmanaged memory when the object is destroyed.
        !NormalGravity(void);
    public:
        enum class StandardModels
        {
            WGS84,  
            GRS80   
        };


        NormalGravity(double a, double GM, double omega, double f_J2,
                      bool geometricp);

        NormalGravity(StandardModels model);

        NormalGravity( const GeographicLib::NormalGravity& g);

        ~NormalGravity()
        { this->!NormalGravity(); }


        double SurfaceGravity(double lat);

        double Gravity(double lat, double h,
            [System::Runtime::InteropServices::Out] double% gammay,
            [System::Runtime::InteropServices::Out] double% gammaz);

        double U(double X, double Y, double Z,
                     [System::Runtime::InteropServices::Out] double% gammaX,
                     [System::Runtime::InteropServices::Out] double% gammaY,
                     [System::Runtime::InteropServices::Out] double% gammaZ);

        double V0(double X, double Y, double Z,
                      [System::Runtime::InteropServices::Out] double% GammaX,
                      [System::Runtime::InteropServices::Out] double% GammaY,
                      [System::Runtime::InteropServices::Out] double% GammaZ);

        double Phi(double X, double Y,
            [System::Runtime::InteropServices::Out] double% fX,
            [System::Runtime::InteropServices::Out] double% fY);


        property double MajorRadius { double get(); }

        property double MassConstant { double get(); }

        double DynamicalFormFactor(int n);

        property double AngularVelocity { double get(); }

        property double Flattening { double get(); }

        property double EquatorialGravity { double get(); }

        property double PolarGravity { double get(); }

        property double GravityFlattening { double get(); }

        property double SurfacePotential { double get(); }

        Geocentric^ Earth();

        static NormalGravity^ WGS84();

        static NormalGravity^ GRS80();

        static double J2ToFlattening(double a, double GM, double omega,
                                     double J2);

        static double FlatteningToJ2(double a, double GM, double omega,
                                     double f);
    };
} //namespace NETGeographicLib