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Time Warp in Animation

In development, iOS, Mac on 30 June 2011 tagged Core Animation with no comments

CAMediaTiming Protocol offers a small set of eight properties. But it is sufficient to do all kinds of time warps, if you know what exactly every property means and how to use it. The most used and simple one is duration: duration Specifies the basic duration of the animation, in seconds. Nothing needs further explanation [...]

Core Animation 101: From and To

In development, iOS, Mac on 27 June 2011 tagged Core Animation with no comments

Core Animation is cool, beautiful, and easy to use; but not easy to use correctly. First of all, you should RTFM(Read The Fabulous Manual). Secondly, of course, you should watch the nice Session Video 424 of WWDC 2010 and play with the sample code Animation101. Now, I assume you’ve done all the prerequisite work so [...]

Int Is Difficult

In development on 26 June 2011 with no comments

Int is the simplest data type, isn’t it? Yes, most of the time. No, not really: What’s the value of b? It’s just two lines of code, so don’t resort to your awesome compiler, simply give me the answer. NSUInteger a = 7; NSInteger b = MAX(4 – a, 1); What’s the problem of this [...]