PHP 地理定位/数学/GoogleMaps 类？
我一直在使用 Google Maps API v3 并创建了一个地图，它允许我在地图上绘制多个标记，然后将它们连接在一起。然后，我有另一个函数集合，可以让我计算定义点和直线之间的距离（以米为单位）。您可以看到下面的示例：
（请原谅 MS Paint，我不应该将其保存为 gif ）
这显然都是在客户端完成的 - 我想知道是否有一个预制类可以让我在服务器端实现这一点（如果可能的话使用 PHP）。 值得注意的是，以米为单位的长度不是来自标记，而是来自任何点的线。
编辑：
我正在寻找能够提供两个点（纬度/经度），我将其称为 X 和 Y，然后我想虚拟地绘制这条线，然后提供另一个点 Z，我想知道它是否在该“虚拟”的 10 米范围内线。
I've been working with Google Maps API v3 and created a map which allows me to plot multiple markers on a map and then join them together. I then have another collection of functions that allow me to calculate the distance between a defined point and a line (in meters). You can see an example of this bellow:
(excuse the MS Paint, I shouldn't have saved it as a gif)
This is all obviously done on client side - I'm wondering if there is a pre-made class that would allow me to achieve this on the server side (using PHP if possible). It is worth noting that the length in meters is NOT from a marker, but the line at any point.
Edit:
I am looking for the ability to provide two points (lat/lng) which I'll call X and Y, I want to then virtually draw this line, then provide another point, Z which I would like to know if its within 10 metres of that "virtual" line.
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您可以在 GIS 上找到此问题的答案：https:// gis.stackexchange.com/questions/11409/calculate-the-distance- Between-a-point-and-a-virtual-line-of-two-lat-lngs
You can find the answer to this question over at GIS: https://gis.stackexchange.com/questions/11409/calculating-the-distance-between-a-point-and-a-virtual-line-of-two-lat-lngs