func maskRoundedImage(image: UIImage,radius: Float) -> UIImage {
    var imageView: UIImageView = UIImageView(image: image)
    var layer: CALayer = CALayer()
    layer = imageView.layer

    layer.masksToBounds = true
    layer.cornerRadius = CGFloat(radius)

    UIGraphicsBeginImageContext(imageView.bounds.size)
    layer.renderInContext(UIGraphicsGetCurrentContext())
    var roundedImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return roundedImage
}