private CartesianCoordinate getWaveVector(
SpectrumUnit waveLength,
double refractiveIndex,
SphericalCoordinate angle)
{
SphericalCoordinate radianAngles = angle.ToRadians();
radianAngles.Radius = waveLength.ToType(SpectrumUnitType.WaveNumber) * refractiveIndex; // k_mod
return(radianAngles.ConvertToCartesian());
}
/// <summary>
/// Creates the Cartesian coordinate from Spherical coordinates.
/// </summary>
/// <param name="spherical">The spherical.</param>
/// <returns>
/// The Cartesian coordinate.
/// </returns>
public static CartesianCoordinate ConvertToCartesian(this SphericalCoordinate spherical)
{
var sphericalRad = spherical.ToRadians();
double radsin = sphericalRad.Radius * Math.Sin(sphericalRad.Polar);
return(new CartesianCoordinate(
radsin * Math.Cos(sphericalRad.Azimuth),
radsin * Math.Sin(sphericalRad.Azimuth),
sphericalRad.Radius * Math.Cos(sphericalRad.Polar)));
}