/// <summary>
/// Gets distance to another coordinate.
/// </summary>
/// <param name="geoCoord"></param>
/// <param name="unit">M=Miles, K=Kilometers, N=NauticalMiles</param>
/// <returns></returns>
public double GetDistanceTo(GeoCoordinates geoCoord, char unit)
{
double theta = Longitude - geoCoord.Longitude;
double dist = Math.Sin(deg2rad(Latitude)) * Math.Sin(deg2rad(geoCoord.Latitude))
+ Math.Cos(deg2rad(Latitude)) * Math.Cos(deg2rad(geoCoord.Latitude)) * Math.Cos(deg2rad(theta));
dist = Math.Acos(dist);
dist = rad2deg(dist);
dist = dist * 60 * 1.1515;
if (unit == 'K')
{
dist = dist * 1.609344;
}
else if (unit == 'N')
{
dist = dist * 0.8684;
}
return (dist);
}
/// <summary>
/// Gets distance to another coordinate in miles.
/// </summary>
/// <param name="geoCoord"></param>
/// <returns></returns>
public double GetDistanceTo(GeoCoordinates geoCoord)
{
return GetDistanceTo(geoCoord, 'M');
}
