How to detect that a point is inside a Polygon using Google Maps SDK for iOS?

问题:

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

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

Do you know any other ways?

回答1:

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."); }

Source: Google Maps for iOS - Reference - GMSGeometryUtils

回答2:

Converting Rachid's answer to swift was trivial:

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

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