Monday, October 15, 2007

An Intro to Quartz and the Core Graphics API's (Updated Links)

Last week I gave a talk at the Des Moines CocoaHeads (Google Groups link) on how Quartz works in Cocoa and an intro to the C Based Core Graphics API's. Some of the topics I got started on was based off of Scott Stevenson's topics raised on Intro to Quartz Part I and II on Cocoa Dev Central and a couple of the Core Graphics examples were based off of samples from the Quartz book written by people in Apple. All in all the meeting covered the following * How Quartz does hardware accelerated drawing * When you would use Core Graphics API's over Cocoa's route to Quartz * A basic intro on to how views work * Basic Cocoa/Quartz Data Structures * Basic Core Graphics Data Structures * How coordinates in Views work * Cocoa Convenience Methods * How to draw Alpha (Transparency) * How paths, strokes and filling works * Using Images in your views * Using PDF's in your views * How to scale images/pdf's non/uniformly * A brief discussion on the Cocoa/Core Foundation Bridge * Places to learn about Quartz Additionally at the meeting we got into some small discussions on how Quartz works on a much deeper level, problems that arise during drawing with floating point widths, etc. The Keynote file from the presentation (for iWork 08) as well as a pdf from the keynote and all the source code examples are available for download below from the Des Moines CocoaHeads Google Groups page: Intro to Quartz Keynote Presentation Intro to Quartz Presentation (Compressed PDF form) Source code from projects demoed Update Updated links from Google Groups Page - if you can't download the files here they are located on the Des Moines Cocoaheads page @ http://groups.google.com/group/des-moines-cocoaheads

2 comments:

Anonymous said...

Sure those links are valid?

Ted said...

Links don't work. :-(

 
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