问题
Hope all are doing well.
In an on going project, am using Google Maps and need to draw an overlay like the below attached image, where the overlay covers the radius of 50km region from my current location.
Appreciate your help, I've tried few links which show same like
Inverted Polygon in GMSMapView
来源：https://stackoverflow.com/questions/61609873/objective-c-google-maps-draw-a-polygon-within-radius-of-50-kilometers-from-my-c