Helper function that creates a default "pan by" handler. The default pan by handler will first restrict the pan by the view port, then clamp the pan by the boundaries, and then pan by the delta.
createHandlerChain to create your own custom pan handler pipeline. (you can also use this function as a part of your own custom pan handler pipeline)
Helper function that creates a default "pan by" handler. The default pan by handler will first restrict the pan by the view port, then clamp the pan by the boundaries, and then pan by the delta.