/// <summary>
/// Constructor with a subset of coefficients specified.
/// </summary>
/// <param name="coeff0">A <see cref="SphericalEngine.Coeff"/> object containing <i>Cnm</i> and <i>Snm</i> coefficients.</param>
/// <param name="coeff1">A <see cref="SphericalEngine.Coeff"/> object containing <i>C'nm</i> and <i>S'nm</i> coefficients.</param>
/// <param name="a">the reference radius appearing in the definition of the sum.</param>
/// <param name="norm">the normalization for the associated Legendre polynomials,
/// either <see cref="Normalization.Full"/> (the default) or <see cref="Normalization.Schmidt"/>.</param>
/// <remarks>See <see cref="SphericalHarmonic"/> for the way the coefficients should be stored.</remarks>
public SphericalHarmonic1(SphericalEngine.Coeff coeff0, SphericalEngine.Coeff coeff1, double a, Normalization norm = Normalization.Full)
{
_a = a;
_norm = norm;
if (!(coeff1.N <= coeff0.N))
{
throw new GeographicException("N1 cannot be larger that N");
}
if (!(coeff1.Nmx <= coeff0.Nmx))
{
throw new GeographicException("nmx1 cannot be larger that nmx");
}
if (!(coeff1.Mmx <= coeff0.Mmx))
{
throw new GeographicException("mmx1 cannot be larger that mmx");
}
_c = new[] { coeff0, coeff1 };
}
/// <summary>
/// Constructor with a subset of coefficients specified.
/// </summary>
/// <param name="coeff">A <see cref="SphericalEngine.Coeff"/> object containing <i>Cnm</i> and <i>Snm</i> coefficients.</param>
/// <param name="a">the reference radius appearing in the definition of the sum.</param>
/// <param name="norm">the normalization for the associated Legendre polynomials,
/// either <see cref="Normalization.Full"/> (the default) or <see cref="Normalization.Schmidt"/>.</param>
public SphericalHarmonic(SphericalEngine.Coeff coeff, double a, Normalization norm = Normalization.Full)
{
_a = a;
_norm = norm;
_c = new[] { coeff };
}