我所做的是使用以下内容使缩放效果更好.查看

What I did is I used the following to make the zoom look much better. Check out here for more info and other versions of this zoom.

            let cam2 = mapView.cameraThatFitsShape(object.polyline!, direction: 0.0, edgePadding: .init(top: 20, left: 30, bottom: 100, right: 30))

            mapView.fly(to: cam2, withDuration: 0.25, completionHandler: nil)