core-image

I have used CIVignette effect for My Photo Editing app. It applying based on Slider's Changing event. I have used following code and my issue is whenever I increased slider's value Vignette effect is appeared but whenever I decrease slider's value the Vignette effect does not decrease. Please Help. @IBAction func slider(_ sender: UISlider) { let startImage = CIImage(image: imgEdited!)! let vignetteFilter = CIFilter(name: "CIVignette")! let radius = 5 vignetteFilter.setValue(startImage, forKey:kCIInputImageKey) vignetteFilter.setValue(sender.value, forKey:"inputIntensity") vignetteFilter

So, I have a CIImage that I'm attempting to draw in an NSView 's -drawRect method. This is the line of code that I call to draw the image: [outputCoreImage drawInRect: [self bounds] fromRect: originalBounds operation: NSCompositeSourceOver fraction: 1]; outputCoreImage , originalBounds , and [self bounds] are all non- nil , and indeed are their respective expected values. On Lion (OS X 10.7), this worked fine, however on Mountain Lion (OS X 10.8) I receive an EXC_BAD_ACCESS on this line. If I walk up the stack, I find that the internal function call that breaks is on CGLGetPixelFormat . frame

I've been struggling for a few days for a project on UIImage colorization. The idea is that the app will embark a set of images that I will have to colorize with values retrieved from a webservice. Some sort of themes if you wish. The designer I work with gave me a background image on all of his Photoshop values. The first problem is that Photoshop uses HSL and iOS uses HSB. So the first challenge was to translate the values from Photoshop. Photoshop HSL: -28 (range -180 => +180), 100 (range -100 => +100), 25 (range -100 => +100). Luckily I found some code online, here it is . //adapted from