Delphi 计算两个坐标点之间的距离(高德地图)
参考这个文章,Java写的,改写成Delphi版本:
function MeasuerDistance(const startLongitude,startLatitude,endLongitude,endLatitude:Double):Integer;
begin
const Earth_RAdius=6378137;
var radLatitude1 := startLatitude * PI / 180.0;
var radLatitude2 := endLatitude * PI / 180.0;
var a := abs(radLatitude1 - radLatitude2);
var b := abs(startLongitude * PI / 180.0 - endLongitude * PI / 180.0);
var s := 2 * arcsin(sqrt(power(sin(a / 2), 2) + cos(radLatitude1) * cos(radLatitude2) * power(sin(b / 2), 2)));
s := s * EARTH_RADIUS;
result :=round(round(s * 10000) / 10000); // 返回距离单位是米
end;
向作者表示感谢!
来源:https://www.cnblogs.com/kinglandsoft/p/16516295.html
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