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我知道如何在平移時清除imageView,但是當我這樣做時清除了銳利邊緣的圖像,但是我想要的是在使用Swift3在iOS上對ImageView進行平移時,使用柔和/平滑邊緣清除ImageView?希望我清楚我的問題。如何清除ImageView?
//For clearing the imageView I use this method.
func draw(fromPoint:CGPoint,toPoint:CGPoint) {
if draw {
UIGraphicsBeginImageContext(self.viewBelowScrollView.bounds.size)// ??
let context = UIGraphicsGetCurrentContext()
frontImageView.image?.draw(in: self.viewBelowScrollView.bounds)
context?.setLineCap(CGLineCap.round)
context?.setLineWidth(CGFloat(sizeSliderOutlet.value))
context?.move(to: CGPoint(x: fromPoint.x, y: fromPoint.y))
context?.addLine(to: CGPoint(x: toPoint.x, y: toPoint.y))
context?.setBlendMode(CGBlendMode.clear)
//Setting the Line Configuration
context?.strokePath()
//Setting all the things done on the Image View Now.
frontImageView.image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
}
}
//任何幫助將不勝感激。先謝謝你。
謝謝你的回覆,我的ImageView的clipToBound屬性已設置爲TRUE。來自財產督察。如果您能爲我提供相同的演示項目,我將非常高興。 –