Join Chris Meyer for an in-depth discussion in this video Managing expressions, part of After Effects Apprentice 09: Expressions.
- View Offline
Now, before we go further, let's show a few ways of managing expressions.…This little equal sign is very important.…It shows that an expression is active.…If I click on the equal sign, it becomes not equal, and that expression is now…temporarily disabled for that layer.…I will RAM preview, you will see I still have my scale animation;…I just no longer have the rotation animation.…But if I want it back, I will click on this again and turn that back on, and now…that expression is in force again.…
If I indeed want to delete the expression, I can either select the text and…Backspace to delete it,…I will undo; or again, Option+Alt click on the property to again…delete that expression. I will undo again.…Let's say that you want to reveal the expressions applied to a layer.…Well, the same key that you used to reveal keyframes,…U, will also reveal expressions for a layer.…I'm pressing U again, and there are my expressions.…
So U reveals both keyframes and expressions--anything that's causing…animation to happen.…
The After Effects Apprentice videos on lynda.com were created by Trish and Chris Meyer and are designed to be used on their own and as a companion to their book After Effects Apprentice. We are honored to host these tutorials in the lynda.com Online Training Library®.
- Creating and managing expressions
- Linking together different parameters
- Randomizing a layer's movement
- Looping an animation
- Controlling multiple layers from a single source