using Plugin.Geolocator;

using Plugin.Geolocator.Abstractions;

using System;

​

public static class CommonExtensions

{

    public static double ToRadian(this double value)

    {

        return (Math.PI / 180) * value;

    }

}

​

public class Program

{

    public static void Main()

    {

        GetDistanceInMiles((33.01132,-96.59337),(33.00409,-96.35437);

    }

    public struct GeoCoordinates : ICloneable

    {

        public double Longitude;

        public double Latitude;

​

        public bool IsEmpty { get { return Longitude.Equals(0) && Latitude.Equals(0); } }

​

        public string Text { get { return ToString(); } }

​

        public object Clone()

        {

            return new GeoCoordinates()

            {

                Latitude = Latitude,

                Longitude = Longitude

            };

        }

​

        public new string ToString()

        {

            return Latitude + "," + Longitude;

        }

    }

​

    private GeoCoordinates _currentGeoCoordinates = new GeoCoordinates();

    public double GetDistanceInMiles(GeoCoordinates geoCoordinatesX, GeoCoordinates geoCoordinatesY)

        {

            double deltaLatitude = (geoCoordinatesY.Latitude - geoCoordinatesX.Latitude).ToRadian();

            double deltaLongitude = (geoCoordinatesY.Longitude - geoCoordinatesX.Longitude).ToRadian();

            double a =

                Math.Sin(deltaLatitude / 2) *

                Math.Sin(deltaLatitude / 2) +

                Math.Cos(geoCoordinatesX.Latitude.ToRadian()) *

                Math.Cos(geoCoordinatesY.Latitude.ToRadian()) *

                Math.Sin(deltaLongitude / 2) *

                Math.Sin(deltaLongitude / 2);

            return 3960 * (2 * Math.Asin(Math.Min(1, Math.Sqrt(a))));

        }

}