2014/10/15 下午 10:15:18
iphone Programming Glossary: uiimageorientationupResizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL targetWidth targetHeight.. bitmap radians 90 CGContextTranslateCTM bitmap targetWidth 0 else if sourceImage.imageOrientation UIImageOrientationUp NOTHING else if sourceImage.imageOrientation UIImageOrientationDown CGContextTranslateCTM bitmap targetWidth..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees to Rotate a UIImage 90 degrees I have a UIImage that is UIImageOrientationUp portrait that I would like to rotate counter clockwise by 90 degrees to landscape . I don't want to.. bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL targetHeight targetWidth.. sourceImage.imageOrientation UIImageOrientationDown NOTHING else if sourceImage.imageOrientation UIImageOrientationUp CGContextRotateCTM bitmap radians 90 CGContextTranslateCTM bitmap 0 targetHeight CGContextDrawImage..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform.. switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform CGAffineTransformScale..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload UIImage fixOrientation No op if the orientation is already correct if self.imageOrientation UIImageOrientationUp return self We need to calculate the proper transformation to make the image upright. We do it in 2.. transform 0 self.size.height transform CGAffineTransformRotate transform M_PI_2 break case UIImageOrientationUp case UIImageOrientationUpMirrored break switch self.imageOrientation case UIImageOrientationUpMirrored.. transform CGAffineTransformRotate transform M_PI_2 break case UIImageOrientationUp case UIImageOrientationUpMirrored break switch self.imageOrientation case UIImageOrientationUpMirrored case UIImageOrientationDownMirrored..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage CGImageGetColorSpace imageRef if bitmapInfo kCGImageAlphaNone bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL targetWidth targetHeight CGImageGetBitsPerComponent imageRef CGImageGetBytesPerRow.. UIImageOrientationRight CGContextRotateCTM bitmap radians 90 CGContextTranslateCTM bitmap targetWidth 0 else if sourceImage.imageOrientation UIImageOrientationUp NOTHING else if sourceImage.imageOrientation UIImageOrientationDown CGContextTranslateCTM bitmap targetWidth targetHeight CGContextRotateCTM bitmap radians 180...
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees to Rotate a UIImage 90 degrees I have a UIImage that is UIImageOrientationUp portrait that I would like to rotate counter clockwise by 90 degrees to landscape . I don't want to use a CGAffineTransform. I want the pixels of the UIImage to.. CGImageGetColorSpace imageRef if bitmapInfo kCGImageAlphaNone bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL targetHeight targetWidth CGImageGetBitsPerComponent imageRef CGImageGetBytesPerRow.. radians 90 CGContextTranslateCTM bitmap targetWidth 0 else if sourceImage.imageOrientation UIImageOrientationDown NOTHING else if sourceImage.imageOrientation UIImageOrientationUp CGContextRotateCTM bitmap radians 90 CGContextTranslateCTM bitmap 0 targetHeight CGContextDrawImage bitmap CGRectMake 0 0 targetWidth targetHeight imageRef CGImageRef..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app imageSize CGSizeMake CGImageGetWidth imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform.. boundHeight UIImageOrientation orient image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform CGAffineTransformScale transform 1.0 1.0 break case UIImageOrientationDown..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload UIImage fixOrientation.m @implementation UIImage fixOrientation UIImage fixOrientation No op if the orientation is already correct if self.imageOrientation UIImageOrientationUp return self We need to calculate the proper transformation to make the image upright. We do it in 2 steps Rotate if Left Right Down and then flip if Mirrored. CGAffineTransform.. transform CGAffineTransformTranslate transform 0 self.size.height transform CGAffineTransformRotate transform M_PI_2 break case UIImageOrientationUp case UIImageOrientationUpMirrored break switch self.imageOrientation case UIImageOrientationUpMirrored case UIImageOrientationDownMirrored transform CGAffineTransformTranslate.. transform CGAffineTransformTranslate transform 0 self.size.height transform CGAffineTransformRotate transform M_PI_2 break case UIImageOrientationUp case UIImageOrientationUpMirrored break switch self.imageOrientation case UIImageOrientationUpMirrored case UIImageOrientationDownMirrored transform CGAffineTransformTranslate transform..
iOS PNG Image rotated 90 degrees http://stackoverflow.com/questions/10307521/ios-png-image-rotated-90-degrees CGImageRef imageRef sourceImage CGImage UIImage rotatedImage UIImage imageWithCGImage imageRef scale 1.0 orientation UIImageOrientationUp You may need to experiment with just what orientation to set on your replacement images possibly switching based on the..
Resizing UIimages pulled from the Camera also ROTATES the UIimage? http://stackoverflow.com/questions/1260249/resizing-uiimages-pulled-from-the-camera-also-rotates-the-uiimage bitmapInfo kCGImageAlphaNone bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL targetWidth targetHeight CGImageGetBitsPerComponent.. CGContextRotateCTM bitmap radians 90 CGContextTranslateCTM bitmap targetWidth 0 else if sourceImage.imageOrientation UIImageOrientationUp NOTHING else if sourceImage.imageOrientation UIImageOrientationDown CGContextTranslateCTM bitmap targetWidth targetHeight..
How to Rotate a UIImage 90 degrees? http://stackoverflow.com/questions/1315251/how-to-rotate-a-uiimage-90-degrees to Rotate a UIImage 90 degrees I have a UIImage that is UIImageOrientationUp portrait that I would like to rotate counter clockwise by 90 degrees to landscape . I don't want to use a CGAffineTransform... bitmapInfo kCGImageAlphaNone bitmapInfo kCGImageAlphaNoneSkipLast CGContextRef bitmap if sourceImage.imageOrientation UIImageOrientationUp sourceImage.imageOrientation UIImageOrientationDown bitmap CGBitmapContextCreate NULL targetHeight targetWidth CGImageGetBitsPerComponent.. targetWidth 0 else if sourceImage.imageOrientation UIImageOrientationDown NOTHING else if sourceImage.imageOrientation UIImageOrientationUp CGContextRotateCTM bitmap radians 90 CGContextTranslateCTM bitmap 0 targetHeight CGContextDrawImage bitmap CGRectMake 0..
MFMailComposeViewController image orientation http://stackoverflow.com/questions/20204495/mfmailcomposeviewcontroller-image-orientation UIImage which remains as 3264w x 2448h. If you capture an image in landscape mode image.imageOrientation will return UIImageOrientationUp. UIImageOrientationUp tells displaying software that the image is fine to display as it is no rotation is necessary. Again.. as 3264w x 2448h. If you capture an image in landscape mode image.imageOrientation will return UIImageOrientationUp. UIImageOrientationUp tells displaying software that the image is fine to display as it is no rotation is necessary. Again the underlying storage.. gImage arrives with UIImageOrientationRight and width 3264 and height 2448. If we shoot landscape gImage arrives with UIImageOrientationUp and width 3264 and height 2448. If we continue on to the E Mailng MFMailComposeViewController code I 脎e added the debugging..
UIImagePickerController camera preview is portrait in landscape app http://stackoverflow.com/questions/538041/uiimagepickercontroller-camera-preview-is-portrait-in-landscape-app imgRef CGImageGetHeight imgRef CGFloat boundHeight UIImageOrientation orient image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation.. image.imageOrientation switch orient case UIImageOrientationUp EXIF 1 transform CGAffineTransformIdentity break case UIImageOrientationUpMirrored EXIF 2 transform CGAffineTransformMakeTranslation imageSize.width 0.0 transform CGAffineTransformScale transform..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload UIImage fixOrientation UIImage fixOrientation No op if the orientation is already correct if self.imageOrientation UIImageOrientationUp return self We need to calculate the proper transformation to make the image upright. We do it in 2 steps Rotate if Left.. CGAffineTransformTranslate transform 0 self.size.height transform CGAffineTransformRotate transform M_PI_2 break case UIImageOrientationUp case UIImageOrientationUpMirrored break switch self.imageOrientation case UIImageOrientationUpMirrored case UIImageOrientationDownMirrored.. transform 0 self.size.height transform CGAffineTransformRotate transform M_PI_2 break case UIImageOrientationUp case UIImageOrientationUpMirrored break switch self.imageOrientation case UIImageOrientationUpMirrored case UIImageOrientationDownMirrored transform..
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