Resizable GMSCircle GoogleMaps SDK for iOS
<p>is there any way to resize (shrink and expand) an GMSCircle object?
I created <code>GMSCircle</code> and attach it into our maps</p>

<pre><code>var cirlce: GMSCircle!

let camera = GMSCameraPosition.cameraWithLatitude(-33.86, longitude: 151.20, zoom: 6)
mapView = GMSMapView.mapWithFrame(CGRectZero, camera: camera)

cirlce = GMSCircle(position: camera.target, radius: 100000)
cirlce.fillColor = UIColor.redColor().colorWithAlphaComponent(0.5)
cirlce.map = mapView
</code></pre>

<p>I want to make <code>circle</code> respond my gesture to resize and get radius value of its circle. For example, there is a web version of it <a href="http://jsfiddle.net/bmf5p500/2/" rel="nofollow">here</a>.</p>

<p>So how to create that? Any help would be appreciated. Thank you!</p>