Ios 如何围绕自定义遮罩创建笔划?
我正在尝试使用UIimage在遮罩周围创建边框。当我在代码中创建掩码时,它看起来很好:Ios 如何围绕自定义遮罩创建笔划?,ios,swift,uiimageview,uibezierpath,stroke,Ios,Swift,Uiimageview,Uibezierpath,Stroke,我正在尝试使用UIimage在遮罩周围创建边框。当我在代码中创建掩码时,它看起来很好: @IBOutlet weak var imageToBeMasked: UIImageView! override func viewDidLoad() { super.viewDidLoad() let mask = UIImageView(image: Image) imageToBeMasked.mask = mask } 但当我尝试在其周围创建笔划时,似乎根本不使用遮罩:
@IBOutlet weak var imageToBeMasked: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
let mask = UIImageView(image: Image)
imageToBeMasked.mask = mask
}
但当我尝试在其周围创建笔划时,似乎根本不使用遮罩:
@IBOutlet weak var imageToBeMasked: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
let mask = UIImageView(image: Image)
// the layer used to mask the image view
let maskLayer = CAShapeLayer()
maskLayer.path = UIBezierPath(rect: mask.bounds).cgPath
imageToBeMasked.layer.mask = maskLayer
// the layer used to draw the border
let strokeLayer = CAShapeLayer()
strokeLayer.frame = imageToBeMasked.bounds
strokeLayer.fillColor = UIColor.clear.cgColor
strokeLayer.path = UIBezierPath(rect: mask.bounds).cgPath
strokeLayer.strokeColor = UIColor.black.cgColor
strokeLayer.lineWidth = 4
imageToBeMasked.layer.addSublayer(strokeLayer)
}
有关如何解决此问题的任何线索?该
CALayer
不受遮罩本身的影响。最快的方法是创建一个比原始图像稍大的新图像,将其放置在原始图像后面,并用颜色着色
let templateImage = originalImage.withRenderingMode(.alwaysTemplate)
strokeImageView.image = templateImage
strokeImageView.tintColor = .black
好的,但是我计划制作马斯库普的动画,我的意思是我计划制作笔划的动画