IPointable interface, which exposes handling of PointerEvents. Generally this takes the form of an interactable that can handle pointer actions such as hovering and selecting.IPointable has started being hovered by a pointer (hand within hover distance of the Canvas).IPointable has stopped being hovered by a pointer (hand moved outside hover distance of the Canvas).IPointable (hand presses on the Canvas).IPointable (touch position changed on Canvas).PointerEvent was canceled (poke pushed through the Canvas).