在Swift编程中,如何裁剪图像并将其放在中心之后？
这就是我到目前为止所做的...我已成功裁剪图像,但我想把它放在中心之后
ImgView.image = OrigImage
var masklayer = CAShapeLayer()
masklayer.frame = ImgView.frame
masklayer.path = path.CGPath
masklayer.fillColor = UIColor.whiteColor().CGColor
masklayer.backgroundColor = UIColor.clearColor().CGColor
ImgView.layer.mask = masklayer
UIGraphicsBeginImageContext(ImgView.bounds.size);
ImgView.layer.renderInContext(UIGraphicsGetCurrentContext())
var image = UIGraphicsGetImageFromCurrentImageContext()
ImgView.image = image
UIGraphicsEndImageContext();
更新:
let rect: CGRect = CGRectMake(path.bounds.minX, path.bounds.minY, path.bounds.width, path.bounds.height)
// Create bitmap image from context using the rect
let imageRef: CGImageRef = CGImageCreateWithImageInRect(image.CGImage, rect)
ImgView.bounds = rect
ImgView.image = UIImage(CGImage: imageRef)
我能够通过获取path.bound和size来中心它并更改我的ImageView的边界.:)