private void UpdatePanningVelocityQueue(Vector3 dragDeltaThisFrameProjectedOnFloor)
{
Vector3 velThisFrame = -dragDeltaThisFrameProjectedOnFloor / Time.deltaTime;
lastCamPanVelocities.Enqueue (velThisFrame);
if (lastCamPanVelocities.Count > velocitySamples)
lastCamPanVelocities.Dequeue ();
}