Example #1
0
        /// <summary>
        /// Computes the aproximate distance between to geographic points
        /// </summary>
        /// <returns>Distance in KM</returns>
        public static double DistanceFrom(GeoPoint from, GeoPoint to)
        {
            const int r = 6371; // Radius of the earth in km
            var a = 0.5 - Math.Cos((to.Latitude - from.Latitude) * Math.PI / 180) / 2 +
               Math.Cos(from.Latitude * Math.PI / 180) * Math.Cos(to.Latitude * Math.PI / 180) *
               (1 - Math.Cos((to.Longitude - from.Longitude) * Math.PI / 180)) / 2;

            return r * 2 * Math.Asin(Math.Sqrt(a));
        }
Example #2
0
 /// <summary>
 /// Computes the aproximate distance between to geographic points
 /// </summary>
 /// <returns>Distance in KM</returns>
 public double DistanceFrom(GeoPoint destination) => DistanceFrom(this, destination);