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As Swift only comes with the N,E,S,W directions on a 2D plane with the UISwipeGestureRecognizer I wanted to add in diagonal directions NE, SE, SW,NW, by subclassing it. I can confirm that the swipe gestures will accept diagonal co-ordinates simply combining -100 on the x and y will move a node in a NW direction, but there is no direction for it in the UISwipeGestureRecognizer class.

However, I am confused as to what I need to do to achieve this, even if I need to subclass or use an extension?

extension UISwipeGestureRecognizer {

    public struct Direction : OptionSet {

        public init(rawValue: UInt)
       
        public static var right: UISwipeGestureRecognizer.Direction { get }
        public static var left: UISwipeGestureRecognizer.Direction { get }
        public static var up: UISwipeGestureRecognizer.Direction { get }
        public static var down: UISwipeGestureRecognizer.Direction { get }
    }
}

I can't find any examples online for extending the ability of the class, is it not wise?