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Creating Motion Graphics with After Effects, 5th Edition by Trish Meyer, Chris Meyer

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19 Precomposing

Continuing our tour of After Effects’ rendering order, we prove that precomposing is easy once you know how…

In the previous chapter, we used nesting to group layers and fix visual problems caused by the default 2D render order. You’ll find that nesting is an intuitive way to create a chain of comps when you’re planning ahead. However, predicting exactly how many comps will be needed to build an animation is difficult; you may need to insert a comp in the middle of an existing hierarchy. That’s where precomposing comes in.

We recommend that you complete Chapter 17 (Parenting Skills) and Chapter 18 (Nesting Compositions) before diving into precomposing so you’ll be better able to compare the different approaches to grouping layers ...

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