如何在Google地图上找到某个点和一条线之间的最近坐标？
[英]How to find the nearest coordinate between a certain point and a line on Google Maps?
问题描述
This question is specifically for Android, but I understand JavaScript as well. 
这个问题专门针对Android，但我也了解JavaScript。
In the image below, A,B and C are known Google Maps coordinates. 在下图中，A，B和C是已知的Google Maps坐标。
I need to find out the coordinate of point X. 我需要找出X点的坐标。
The coordinate of point X is the place where the line between A and B is closest to point C. X点的坐标是A和B之间的线最接近C点的位置。
Is there a way to find X? 有没有办法找到X？
1 个解决方案
解决方案1
0 2017-08-11 15:00:49
Use 'google.maps.geometry.poly.isLocationOnEdge()' to find out if X is close or on a polyline or polygon. 使用“ google.maps.geometry.poly.isLocationOnEdge（）”来确定X是封闭的还是在折线或多边形上。
Pass the C coordinate, AB points as polyline and a tolerance value - which sets the maximum distance from the polyline is X. It returns true or false. 传递C坐标，将AB点指定为多段线，并指定一个公差值-设置距该多段线的最大距离为X。返回true或false。
The actual coordinate of X is not found, but this is what I was actually looking for. 找不到X的实际坐标，但这就是我真正想要的。
https://developers.google.com/maps/documentation/javascript/geometry https://developers.google.com/maps/documentation/javascript/geometry
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