CS193E Lecture 20
Cocoa Animation
Announcements
Final Projects
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Due Wed
Project Demos
Thursday, March 20, 2008 ■ 3:30 - 6:30 PM ■ Skilling 193
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Development Resources
Xcode Documentation Developer Connection http://developer.apple.com
Free Online Membership ■ Student Membership Available
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WWDC
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Typically a student scholarship program
Architecture
Core Animation engine Layer based
Ease of use
Power and Simplicity NSViews
Cocoa Animation
Graphics unification
Layers
QuickTime
Core Animation
Core Image
Quartz
Performance
Hardware acceleration Multi threaded
OpenGL
Core Animation
Which Layer should I use Start at the NSView level
Easy to implement ■ Provides built-in behaviors ■ Future-proofs your UI
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View Animation
Call underlying layer based effects when you need to ■ Replace a placeholder view with your own Layer tree
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Core Animation
Introduction
User interfaces are becoming more fluid, cinematic NSWindow and NSView are the core classes used to build
Cocoa user interfaces AppKit has added simple, flexible API for animation Core Animation provides a powerful foundation for compositing and animation AppKit harnesses Core Animation to extend its functionality to Views

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