September 2012
Intermediate to advanced
592 pages
15h 18m
English
Content preview from The After Effects Illusionist
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8
THE EXPRESSION CONTROLS EFFECTS
The Expression Controls category of effects contains what is perhaps the oddest group of effects. Other than the effects in the Audio category, most effects make some kind of visual change. The Expression Controls effects are used to control expressions, which are used to control the values of layer properties. In effect, they control the controllers.
One of the big limitations of expressions is that they cannot be animated. Let's say you wanted to simulate an earthquake by applying a Wiggle expression to the Point of Interest value on your camera layer. Once you applied the expression, the wiggling would last for the entire duration of the layer (or, the composition, whichever ended first). Enter the Expression ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.