Objective: Get bigger edit image from imagePickerController with correct position.
Question: Could anyone please help me to get the image and tell me what my code is wrong? In my investigation, CGImageCreateWithImageInRect with UIImagePickerControllerCropRect looks weird. But not sure...
Why: info[UIImagePickerControllerEditedImage] is too small, so I want to use info[UIImagePickerControllerEditedImage].
Issue: croppedImage in the code returns wrong position edited image.
Other info: original image is 90 rotated, so I use imageRotatedByDegrees function found in web, and it works well.
class PhotoViewController: UIImagePickerControllerDelegate {
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
let originalImage = info[UIImagePickerControllerOriginalImage] as? UIImage
let rotatedOriginalImage = originalImage!.imageRotatedByDegrees(90, flip: false)
let croppedImage = UIImage(CGImage: CGImageCreateWithImageInRect(rotatedOriginalImage.CGImage, info[UIImagePickerControllerCropRect]!.CGRectValue()))
}
}
// For rotating UIImagePickerControllerOriginalImage
// source: http://blog.ruigomes.me/how-to-rotate-an-uiimage-using-swift/
extension UIImage {
public func imageRotatedByDegrees(degrees: CGFloat, flip: Bool) -> UIImage {
let radiansToDegrees: (CGFloat) -> CGFloat = {
return $0 * (180.0 / CGFloat(M_PI))
}
let degreesToRadians: (CGFloat) -> CGFloat = {
return $0 / 180.0 * CGFloat(M_PI)
}
// calculate the size of the rotated view's containing box for our drawing space
let rotatedViewBox = UIView(frame: CGRect(origin: CGPointZero, size: size))
let t = CGAffineTransformMakeRotation(degreesToRadians(degrees));
rotatedViewBox.transform = t
let rotatedSize = rotatedViewBox.frame.size
// Create the bitmap context
UIGraphicsBeginImageContext(rotatedSize)
let bitmap = UIGraphicsGetCurrentContext()
// Move the origin to the middle of the image so we will rotate and scale around the center.
CGContextTranslateCTM(bitmap, rotatedSize.width / 2.0, rotatedSize.height / 2.0);
// // Rotate the image context
CGContextRotateCTM(bitmap, degreesToRadians(degrees));
// Now, draw the rotated/scaled image into the context
var yFlip: CGFloat
if(flip){
yFlip = CGFloat(-1.0)
} else {
yFlip = CGFloat(1.0)
}
CGContextScaleCTM(bitmap, yFlip, -1.0)
CGContextDrawImage(bitmap, CGRectMake(-size.width / 2, -size.height / 2, size.width, size.height), CGImage)
let newImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return newImage
}
}
