This requires the use of variables, which sound scarier than they actually are. It's super easy to apply. However, what if you want to randomize your Wiggle? The expression looks like this: "wiggle=(# of wiggles/sec, # of pixels allowed to wiggle). All you have to do is write in a couple of numbers and boom, you're done. So, the Wiggle expression is pretty popular among pros and beginners. If you're a math nerd like me, you'll get a kick out of this trick. Then, he writes out a pretty simple expression (the explanation of which is not as simple, though) to randomize the shape of the ellipse over time. To fix this, he first creates a slider control that is linked to the Evolution option in the Turbulent Displace drop-down. In Dodson's example, he applies it to his ellipse to turn it into a blobby, wavy thing and then adds an expression to randomize the application of the effect to give the illusion that it's moving and alive. If you want to give your assets, whether they're shapes or text, a little bit of life, you might want to try applying the Turbulent Displace effect. Link the turbulent displace effect to a slider Even if you drag them beyond those two numbers, they'll snap back within the range. See, if you drag your new Trim Paths slider, you can go below 0 and above 100, but if you add the expression, your parameters will stay between 0 and 100. It's pretty nifty, especially when you've got a ton of layers and don't want to dig around to find the one you need to change.Ĭhange how much of the stroke you see (Trim Paths)ĭodson does some pretty cool stuff with the Trim Paths effect, including adding a slider to easily adjust how much of the stroke is visible, but the most notable thing he does, I think, is adding a clamp effect to the slider itself. This technique allows you to basically control the many different parameters of your composition all within a single null object folder. He uses the same method to add a color control to change the color of his asset. In the video, Dodson adds a slider control to a null object and then links the stroke width of his asset to the slider control with the pick whip. If you don't already use this trick, you're really missing out, because you can add different controls to your composition, whether it's a for changing the color of an object or adjusting its size. If you want to learn a few ways to apply some really interesting effects (and simplify your workflow at the same time), Nathaniel Dodson of tutvid shows you five really useful tricks you can use with expressions in After Effects to take your animation game to the next level. But that's just the thing-there are so.many.tools. You can create a virtually endless amount of awesome motion graphics and visual effects if you know how to use its many powerful tools. Adobe After Effects makes so many things in post-production possible.
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