I\'m working with some example code that draws an arc using CGPaths. I\'ve had a look around and have found documentation but I just can\'t seem to visualize in my head whats going on in terms of usin
I have a class that takes an NSString as a parameter, uses Core Text to get the siz开发者_C百科e of the text, extract each line and renders the text line with different x offsets to give a skewed effe
Is it possible for a container UIView to draw in a child UIView? If s开发者_Go百科o, how do I obtain the child\'s cgcontext?It is possible, add an accessor to the clild view\'s context.
I\'m coding the \"Asteroids\" app in chapter 4 of \"Beginning iPhone Games Development\". The atlas sprite section of the chapter has the sprite running back and forth on the screen (when it comes to
I want to use bitmap images as a \"map\" for levels in iphone game. Basicly it\'s all about the location of obstacles in the rectangular world. The obstacles would be color-co开发者_运维问答ded -- whe
I\'m writing an iPhone app and I\'m new to the iOS sdk.Heres what I\'m trying to accomplish.I want an image to flash on top of my screen (On top meaning over everything that\'s already in my view).I c
I need to draw a filled circle, and it needs to have an outline that is a dif开发者_C百科ferent colour.Right now I\'m doing this by creating two circles, and filling one then stroking the other.
I have a little method that does some CoreGraphics drawing. Today I was using Clang in XCode to detect and fix some memory leaks. It told me about \'rgbColourSpace\' and \'fillColour\' (see code below
I\'m wondering under which circumstances this code breaks in the second assert. In other words, when can -[UIImage CGImage] return nil? The documentation isn\'t very telling here.
I have a custom NSView that lives inside of a NSScrollView that is in a NSSplitView. The custom view uses the following drawing code:
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