/// <summary>/// 通过地图上的两个坐标计算距离(C#版本)/// Add by 成长的小猪(Jason.Song) on 2017/11/01/// http://blog.csdn.net/jasonsong2008/// </summary>public class MapHelper{/// <summary>/// 地球半径/// </summary>private const double EarthRadius = 6378.137;/// <summary>/// 经纬度转化成弧度/// Add by 成长的小猪(Jason.Song) on 2017/11/01/// http://blog.csdn.net/jasonsong2008/// </summary>/// <p...