经纬度两点之间的距离计算

2019-11-09 18:07:55

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public static float GetDistance(LocationInfo info1, LocationInfo info2) { if(Mathf.Abs(info1.latitude) > 90 || Mathf.Abs(info2.latitude) > 90) { return 0; }

if(Mathf.Abs(info2.longitude) > 180 || Mathf.Abs(info2.longitude) > 180) { return 0; } float radLat1 = rad(info1.latitude); float radLat2 = rad(info2.latitude); float a = radLat1 - radLat2; float b = rad(info1.longitude) - rad(info2.longitude); float s = 2 * Mathf.Asin(Mathf.Sqrt(Mathf.Pow(Mathf.Sin(a / 2), 2) + Mathf.Cos(radLat1) * Mathf.Cos(radLat2) * Mathf.Pow(Mathf.Sin(b / 2), 2))); s = s * 6378.137f; s = Mathf.Round(s * 10000) / 10000; return s;}

PRivate static float rad(float d) { return d * Mathf.PI / 180.0f; }

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