在Swift中旋转图像视图
我使用游乐场旋转下图在Swift中旋转图像视图,swift,nsimage,nsimageview,Swift,Nsimage,Nsimageview,我使用游乐场旋转下图 let imagePath = pathToFileInSharedSubfolder("gauge.png") let image = NSImage(byReferencingFile: imagePath)! let imageView = NSImageView() imageView.image = image //Frames let imageframe = imageView.frame let origin = CGPointMake(image
let imagePath = pathToFileInSharedSubfolder("gauge.png")
let image = NSImage(byReferencingFile: imagePath)!
let imageView = NSImageView()
imageView.image = image
//Frames
let imageframe = imageView.frame
let origin = CGPointMake(imageframe.width/2, 0)
imageView.setFrameOrigin(origin)
imageView.rotateByAngle(35)
imageView.setNeedsDisplay()
let frame = CGRectMake(150, 0, 51, 126)
imageView.frame = frame
view.addSubview(imageView)
let refImageView = NSImageView()
refImageView.frame = frame
refImageView.image = image
view.addSubview(refImageView)
图像不是围绕原点旋转的。见下图
如何更改图像视图原点?谢谢