Swift Clip UIImage

gistfile1.txt

extension UIImage {
    @objc public func clipWith(_ path: UIBezierPath) -> UIImage? {
        let shotest = min(size.width, size.height)
        let outputRect = CGRect(x: 0, y: 0, width: shotest, height: shotest)

        UIGraphicsBeginImageContextWithOptions(outputRect.size, false, 0)
        defer {
            UIGraphicsEndImageContext()
        }

        guard let context = UIGraphicsGetCurrentContext() else { return nil }
        context.addPath(path.cgPath)
        context.clip()

        self.draw(in: CGRect(x: (shotest - size.width)/2,
                             y: (shotest - size.height)/2,
                             width: size.width,
                             height: size.height))

        guard let maskedImage = UIGraphicsGetImageFromCurrentImageContext() else { return nil }
        return maskedImage
    }
  }