CGSize extensions

CGSize extensions.swift

extension CGSize {
    
    init(_ point: CGPoint) {
        self.width = point.x
        self.height = point.y
    }
    
    func friendlyString() -> String {
        return "(\(String(format: "%.2f", width)), \(String(format: "%.2f", height)))"
    }
}

func + (left: CGSize, right: CGSize) -> CGSize {
    return CGSize(width: left.width + right.width, height: left.height + right.height)
}

func - (left: CGSize, right: CGSize) -> CGSize {
    return CGSize(width: left.width - right.width, height: left.height - right.height)
}

func += (left: inout CGSize, right: CGSize) {
    left = left + right
}

func -= (left: inout CGSize, right: CGSize) {
    left = left - right
}

func / (left: CGSize, right: CGFloat) -> CGSize {
    return CGSize(width: left.width / right, height: left.height / right)
}

func * (left: CGSize, right: CGFloat) -> CGSize {
    return CGSize(width: left.width * right, height: left.height * right)
}

func /= (left: inout CGSize, right: CGFloat) {
    left = left / right
}

func *= (left: inout CGSize, right: CGFloat) {
    left = left * right
}