November 2011
Intermediate to advanced
528 pages
10h 14m
English
Content preview from Cocoa® Programming for Mac® OS X, Fourth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 33. Core Animation
As Mac OS X has evolved, it has used OpenGL more and more to utilize the power of modern graphics processors. To make some of these capabilities convenient for all programmers, Apple created Core Animation in Mac OS X 10.5. Core Animation is extremely versatile, being useful not only for animating UI components but also as a tool for creating custom UI elements from scratch.
The central class in Core Animation is CALayer, which you can think of as a building block. Its appearance can be configured in numerous ways through its properties. Among them are position, size, image contents, background color, border, shadow, and corner radius. It’s also possible to mask a layer with another, as well apply a 3D transform. Most ...
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