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Cocoa Programming for Mac OS X, Third Edition
book

Cocoa Programming for Mac OS X, Third Edition

by Aaron Hillegass
May 2008
Intermediate to advanced content levelIntermediate to advanced
464 pages
8h 13m
English
Addison-Wesley Professional
Content preview from Cocoa Programming for Mac OS X, Third Edition

Chapter 32. Core Animation

As Mac OS X has evolved, it has used OpenGL more and more to use the power of modern graphics processors. To make some of these capabilities convenient for all programmers, Apple created CALayer in Mac OS X 10.5. You can think of a CALayer as a buffer that you can draw into. Once it has been rendered, it can be moved, resized, and redrawn by the graphics processor at startling speeds.

Like views, layers are arranged in a hierarchy. A view can be covered with a layer, and that layer can have sublayers.

Once we have the CALayer, which can be manipulated at an amazing speed, we need something to drive the process. CAAnimation does this. NSAnimationContext can be used to group and synchronize multiple animations.

As an example, ...

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Publisher Resources

ISBN: 9780321562739Purchase book