Change Camera Zoom based on Radius Google Maps iOS SDK

Question

I am working on an app that displays certain markers based on a radius around your current location. The radius is between 100 - 5000 meters. I change the radius with an U

Answer 1

hope it will work.

in view controller initialise this circle

 var cirlce: GMSCircle!

in viewdidload

 cirlce = GMSCircle(position: camera.target, radius: 10000)
        cirlce.fillColor = UIColor.red.withAlphaComponent(0.5)
               cirlce.map = mapView

call the delegate of googlemap

 func mapView(_ mapView: GMSMapView, didChange position: GMSCameraPosition) {
           print(position.zoom)
        var zoom:Double = Double(position.zoom/4)
        zoom = pow(10, zoom)
        zoom = 1000000/zoom
         cirlce.radius = zoom
    }