如何使用Google Maps SDK for iOS检测点在Polygon内？ [英] How to detect that a point is inside a Polygon using Google Maps SDK for iOS?

问题描述

使用适用于iOS的Google Maps SDK，是否可以检测到多边形内的某个点？

With the Google Maps SDK for iOS, is it possible to detect that a point is inside a Polygon?

我在Google Maps JavaScript API中找到了containsLocation（）函数但是，我在iOS SDK中找不到相同的那个。

I found containsLocation() function in Google Maps JavaScript API, however, I couldn't find the same one in the iOS SDK.

你知道其他任何方法吗？

Do you know any other ways?

推荐答案

谷歌地图SDK for iOS现在包含一个名为 GMSGeometryContainsLocation 的函数，它将帮助您使用一行代码。

The Google Maps SDK for iOS now contains a function called GMSGeometryContainsLocation, which will help you out with a single line of code.

if (GMSGeometryContainsLocation(yourPoint, pathOfPolygon, YES)) {
    NSLog(@"YES: you are in this polygon.");
} else {
    NSLog(@"You do not appear to be in this polygon.");
}

来源： Google Maps for iOS - 参考 - GMSGeometryUtils

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