Core animation provides a means to bridge into other core capabilities.
Pratically, this means that you can apply, for example, a Gaussian blur to a layer's contents.
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Core animation provides a means to bridge into other core capabilities.
Pratically, this means that you can apply, for example, a Gaussian blur to a layer's contents.
转载于:https://www.cnblogs.com/grep/archive/2012/06/27/2566230.html