SphericalCoefficients.h

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#pragma once
 
namespace NETGeographicLib
{
    public ref class SphericalCoefficients
    {
        private:
        // The cosine coefficients.
        array<double>^ m_C; // size = Csize(m_nmx,m_mmx)
        // The sine coefficients
        array<double>^ m_S; // size = Ssize(m_nmx,m_mmx)
        // The dimension of the coefficients
        int m_N;
        int m_nmx;
        int m_mmx;
    public:
        SphericalCoefficients( const GeographicLib::SphericalEngine::coeff& c );
 
        property int N { int get() { return m_N; } }
        property int nmx { int get() { return m_nmx; } }
        property int mmx { int get() { return m_mmx; } }
        int index(int n, int m)
        { return m * m_N - m * (m - 1) / 2 + n; }
        double Cv(int k) { return m_C[k]; }
        double Sv(int k) { return m_S[k - (m_N + 1)]; }
        double Cv(int k, int n, int m, double f)
        { return m > m_mmx || n > m_nmx ? 0 : m_C[k] * f; }
        double Sv(int k, int n, int m, double f)
        { return m > m_mmx || n > m_nmx ? 0 : m_S[k - (m_N + 1)] * f; }
 
        static int Csize(int N, int M)
        { return (M + 1) * (2 * N - M + 2) / 2; }
 
        static int Ssize(int N, int M)
        { return Csize(N, M) - (N + 1); }
 
    };
} // namespace NETGeographicLib