 
     /**
     The bottom-right point of the receiver.
+    
+        let r = C4Rect(5,5,10,10)
+        r.max //-> {15,15}
     */
     public var max: C4Point {
         get {

    
    /**
    Initializes a new C4Rect with the origin {x,y} and the size {w,h}
    */
    public init(_ x: Double, _ y: Double, _ w: Double, _ h: Double) {
        origin = C4Point(x, y)

    /**
    Checks to see if the receiver has zero size and position
    
        let r = C4Point()
        r.isZero() //-> true

    :returns: true if origin = {0,0} and size = {0,0}
    */
    public func isZero() -> Bool {
