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Learning Quartz Composer: A Hands-On Guide to Creating Motion Graphics with Quartz Composer by Surya Buchwald, Graham Robinson

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Chapter 5. Debugging (When Things Go Wrong)

With the power of experimentation in Quartz Composer come the inevitable “What did I do wrong?” moments. Here are some helpful patches to get users through these tough times.

image Play the video titled “Make and Use Debugging Tools.”

Using Image with String

You will learn about the official debugging tools available for Quartz Composer in the next section. For now, let’s construct a handy on-screen debug display by learning how to print text to a Billboard:

1. Create a new composition and place a Clear patch and an Image with String patch into the editor.

2. Insert a Billboard patch and route the Image ...

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