I want resize the shapes draw on context by picking their endpoints. And also rotate it with its endPoints. Can anybody suggest me how can I do this with proper example?
Is it possible to use CGDataProviderCreateSequential() and CGDataProviderSequential开发者_运维百科Callbacks to read the data in from a CGImageRef sequentially?
I have a CALayer that needs to display frames of video. Every time a frame is rendered (as a CGImageRef), this method is called:
I have an image that is totally white in its RGB components, with varying alpha -- so, for example, 0xFFFFFF09 in RGBA format.But when I load this image with either UIImage or CGImage APIs, and then d
I am using a transparent image with a cut out for a user to insert / take their own image. For some reason, while using the UIImagePickerControllerEditedImage and cropping the 开发者_开发问答user-take
I\'m trying to create a bitmap in memory as part of a pattern function that a drawLayer:inContext: method (this method is part of the CALayer delegate protocol) will call. The pattern function looks s
FIXED: I\'开发者_StackOverflow中文版m not sure yet why. Code has been updated below, and notes at the bottom
I am trying to clip a portion of an image I take with a camera. Here\'s my clipping code: - (UIImage*) maskImage:(UIImage *)image {
I am taking an image, loading it via the screen context, and changing it pixel by pixel.I have a number of different filters that I am applying to the images, but the last thing I need to do is shift
I need to populate a number of UIImageView instances (about 10) with UIImage instances from ALAssets. I don\'t want to lock up the main thread while doing that so want to do as much as possible in a b
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