AnimateCamera3 (GoogleMap1 AsGoogleMap, CameraUpdate1 AsCameraUpdate, DurationMs AsInt, CancelableCallback1 AsCancelableCallback) Animates the movement of the camera from the current position to the position defined in the CameraUpdate1 over the specified duration.
Raising the CancelableCallback Cancel or Finish event on termination or completion.
Pass Null as the CancelableCallback if not required.
So you'd create a CameraUpdate using one of those 2 CameraUpdateFactory methods and then use the GoogleMapsExtras AnimateCamera3 method to perform the animation.