Summary

What a long chapter that turned out to be. As mentioned already, the available space only allows us to introduce a subset of the features accessible through Core Animation.

You have learned the following in this chapter:

• How to use CALayer for graphics rendering
• Using CALayer's subclasses: CAShapeLayer, CATextLayer, and CATransformLayer
• Rotating, resizing, and translating layers
• Using implicit animation with CALayer
• The purposes and methods of several flavors of animation, including basic, key-frame, and group animations
• Using CAMediaTiming objects to coordinate several staggered animations
• Wrapping property changes in CATransaction blocks, and how to nest transactions
• 3D drawing and a brief look at its matrix-based model
• Animating NSViews directly using NSAnimationContext

In the next chapter, we'll take a look at Swift's error-handling features.