public Locality GetLocality(GeoCoordinates coordinates)
{
Locality locality;
_localitiesByCoordinates.TryGetValue(coordinates, out locality);
return(locality);
}
public CountrySubdivision GetCountrySubdivision(GeoCoordinates coordinates)
{
CountrySubdivision subdivision;
_subdivisionsByCoordinates.TryGetValue(coordinates, out subdivision);
return(subdivision);
}
public static double Distance(GeoCoordinates c1, GeoCoordinates c2)
{
const double avgEarthRadius = 6372.795;
// Convert to radians.
var lat1 = c1.Latitude * Math.PI / 180;
var lat2 = c2.Latitude * Math.PI / 180;
var dLng = (c2.Longitude - c1.Longitude) * Math.PI / 180;
var sinLat = Math.Sin((lat1 - lat2) / 2);
var sinLng = Math.Sin(dLng / 2);
var cosLat1 = Math.Cos(lat1);
var cosLat2 = Math.Cos(lat2);
// Use the haversine formula (see http://en.wikipedia.org/wiki/Great-circle_distance).
return(avgEarthRadius * 2 * Math.Asin(Math.Sqrt(sinLat * sinLat + cosLat1 * cosLat2 * sinLng * sinLng)));
}
public double Distance(GeoCoordinates c)
{
return(Distance(this, c));
}
public static CountrySubdivision GetCountrySubdivision(GeoCoordinates coordinates)
{
return(GetFinder().GetCountrySubdivision(coordinates));
}
public static Locality GetClosestLocality(this Country country, GeoCoordinates coordinates)
{
return(GetCountryFinder(country.Id).GetClosestLocality(coordinates));
}
public static Locality GetLocality(GeoCoordinates coordinates)
{
return(GetFinder().GetLocality(coordinates));
}