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2014/10/15 ¤U¤È 10:12:24
iphone Programming Glossary: outputimageHow to programmatically change the hue of UIImage? http://stackoverflow.com/questions/11555071/how-to-programmatically-change-the-hue-of-uiimage setValue NSNumber numberWithFloat deltaHueRadians forKey @ inputAngle CIImage resultCore hueAdjust valueForKey @ outputImage Convert the filter output back into a UIImage. This section from http stackoverflow.com a 7797578 1318452 CIContext context..
http://stackoverflow.com/questions/1309757/blend-two-uiimages This is my image to blend in CGContextDrawImage context bounds UIImage imageNamed @ over.png .CGImage UIImage outputImage UIGraphicsGetImageFromCurrentImageContext UIImageWriteToSavedPhotosAlbum outputImage self nil nil clean up drawing environment.. @ over.png .CGImage UIImage outputImage UIGraphicsGetImageFromCurrentImageContext UIImageWriteToSavedPhotosAlbum outputImage self nil nil clean up drawing environment UIGraphicsEndImageContext but does not seem to work. Any suggestions will be appreciated...
UIImage from CALayer - iPhone SDK http://stackoverflow.com/questions/3454356/uiimage-from-calayer-iphone-sdk
resize and crop image centered http://stackoverflow.com/questions/3955189/resize-and-crop-image-centered is purely illustrative. You might want to do something different for example center the crop rect relative to the outputImage dimensions but this ought to get you close enough to make whatever other changes you need. @implementation UIImage resizeAndCropExample.. CGSize newSize thenCropWithRect CGRect cropRect CGContextRef context CGImageRef imageRef CGSize inputSize UIImage outputImage nil CGFloat scaleFactor width resize maintaining aspect ratio inputSize self.size scaleFactor newSize.height inputSize.height.. UIGraphicsGetCurrentContext CGContextDrawImage context CGRectMake 0 0 newSize.width newSize.height self.CGImage outputImage UIGraphicsGetImageFromCurrentImageContext UIGraphicsEndImageContext inputSize newSize constrain crop rect to legitimate..
Draw another image on a UIImage http://stackoverflow.com/questions/6656745/draw-another-image-on-a-uiimage CGRectMake 0 0 width height pop context UIGraphicsPopContext get a UIImage from the image context enjoy UIImage outputImage UIGraphicsGetImageFromCurrentImageContext clean up drawing environment UIGraphicsEndImageContext This code source here will..
Capturing EAGLview content WITH alpha channel on iPhone http://stackoverflow.com/questions/962390/capturing-eaglview-content-with-alpha-channel-on-iphone context CGRectMake 0.0 0.0 width height iref CGImageRef outputRef CGBitmapContextCreateImage context UIImage outputImage UIImage imageWithCGImage outputRef UIImageWriteToSavedPhotosAlbum outputImage nil nil nil return outputRef As I already.. context UIImage outputImage UIImage imageWithCGImage outputRef UIImageWriteToSavedPhotosAlbum outputImage nil nil nil return outputRef As I already mentioned this perfectly grabs the content of my EAGLview but I can not get the..
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