OpenLayers 3：如何计算2点之间的距离？ [英] OpenLayers 3: How to calculate distance between 2 points?

问题描述

使用OpenLayers 3，如何确定球形墨卡托（SRID：3857）投影中两点之间的距离？

Using OpenLayers 3, how can I determine the distance between two points in the Spherical Mercator (SRID: 3857) projection?

我知道 distanceTo 在OpenLayers 2中使用

I know that distanceTo was used in OpenLayers 2

point1.distanceTo(point2)

我浏览了 OpenLayers 3文档，但我找不到类似的东西...

I looked through the OpenLayers 3 docs, but I'm not finding anything similar...

推荐答案

您可以使用Sphere对象计算两个坐标之间的距离，如下所示：

You can use the Sphere object to calculate the distance between two coordinates like this:

var distance = ol.sphere.WGS84.haversineDistance([0,0],[180,0]); 
//20037508.34 meters 

Sphere还提供各种算法来计算距离，如余弦，equirectangular等等。
您还可以创建半径为不同椭圆体的Sphere对象。

Sphere provides also various algorithms to calculate the distance like cosine,equirectangular etc. You can also create the Sphere object with the radius of a different ellipsoid.

我不知道为什么文档不在线，但是你可以检查球体对象源代码中可用的方法： https://github.com/openlayers/ol3/blob/master/src/ol/sphere.js

I don't know why the docs are not online, but you can check the methods available from the source code of the sphere object: https://github.com/openlayers/ol3/blob/master/src/ol/sphere.js

我个人认为看源头代码是查找OpenLayers3答案的最佳方式;）

I personally think that looking at the source code is the best way to find answers about OpenLayers3 ;)

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