Chapter 14

Drawing with Quartz and OpenGL

Every application we've built so far has been constructed from views and controls provided as part of the UIKit framework. You can do a lot with the UIKit stock components, and a great many application interfaces can be constructed using only these objects. Some applications, however, can't be fully realized without looking further.

For instance, at times, an application needs to be able to do custom drawing. Fortunately for us, we have not one but two separate libraries we can call on for our drawing needs:

  • Quartz 2D, which is part of the Core Graphics framework
  • OpenGL ES,which is a cross-platform graphics library

OpenGL ES is a slimmed-down version of another cross-platform graphic library called ...

Get Beginning iPhone 4 Development: Exploring the iOS SDK now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial