Tutorial – Quartz Composer and Image Units in Xcode

July 5, 2009: 10:00 pm: George StarcherProgramming, Training

I gave myself a crash course this weekend. I mainly wanted to be able to make plugins for fun in Pixelmator. But turns out you can use things in iChat and Photobooth live. It was a bit of a fun uphill battle to actually figure out a repeatable process. So I wrote one. You can download my Image Units Tutorial in PDF.

I cover Prototyping in Quartz Composer, moving it to an Image Unit and compile it in Xcode. I toss in how to add a user input and even found a blog post on the Internet on how to ensure your IU puts out an image with defined dimensions.

Enjoy!

gisnap

Its really cool, I came to know this really worth visiting, just bookmarked your site.

http://gisnap.com/
The place where fun never ends
Graham Harrison

If my first post appears, I reloaded the example and this time got everything to pass syntax. Don't know what the error was, but no intervention needed.
georgestarcher

most likely a hidden character when you cut and pasted. that happens.
Graham Harrison

I didn't discover this until after I had upgraded to Snow Leopard and, consequently, Xcode 3.2. It was obvious from the beginning that things had changed, minor layout and renames for instance. But on page 5, copying your code brought up everything as being a syntax error.

Judicous pruning of multiple double-quotes has fixed most of it, but nothing I have tried will stop it from rejecting the very first line - Kernel vec4 ….

I am very new to this, and with little Xcode or Mac coding either, so I don't have a lot of arrows in my quiver. I was so pleased to find that such a tutorial existed and to be stopped in my tracks so early is a huge disappointment. If you have had a chance to look at 3.2 I would appreciate a hand.

Thanks
Graham
Name

I can't seem to access the tutorial. Are there any mirrors I can try?
jeff

Core image filters can also be applied by CoreImageTool!

http://codesnippets.joyent.com/posts/show/1731

Thanks for the tutorial!

George Starcher

Thoughts, tricks and tirades on technology today.

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