Create a CAShapeLayer with a UIBezierPath

UIBezierPath+shapeLayer.swift

extension UIBezierPath {
    func shapeLayer() -> CAShapeLayer {
        let l = CAShapeLayer()
        let path = self.copy()
        let bounds = path.bounds
        let origin = bounds.origin
        
        path.applyTransform(CGAffineTransformMakeTranslation(-origin.x, -origin.y))
        
        l.path = path.CGPath
        l.frame = bounds
        return l
    }
}