after effects expression wiggle between two values

We’ll then select all the keyframes and right click – keyframe assistant – easy ease, to make the animation smoother in the third line we are telling AE to use the give value for the X property and to only wiggle the Y property of the scaleĪt this point nothing happens as the amplitude is set to 0, so we need to set a few keyframes on the null layer in the second line we define another variable that wiggle 2 times per second at the amplitude of the first variable in the first line we define a variable which is linked to the slider we’ve created earlier

The expression that we need to add is: “a=” and then pickwhip the scale property with the slider property from the null object Next we’ll choose the first bar and press “s” to bring down the scale and alt+click on the stopwatch to add the expression. You can do that by pressing on the small lock icon. Lock the Effect Controls panel so that it stays in view. We’ll then create a null object by going to “Layer – New – Null Object”Īnd add a slider control “Effect – Expression Controls – Slider Control” and rename the effect “Amplitude” All the 3 bars have the anchor point set to the bottom and you can do that by pressing the Y key to select the anchor point and moving the anchor target to the bottom of the shape layer. In this example, we have 3 shape layers and we’re looking to animate the Y dimension using the wiggle expression. So let’s jump right into it and see how it’s done

We’ll then add a slider for the amplitude so we can control the animation. We will use an expression to separate the x and y dimensions, something that we cannot achieve directly in the wiggle expression and apply the effect only to the y dimension. Wiggle is probably the most popular expression from After Effects, and in today’s article, we’ll take a look at an alternative way of using it to create an animation

After effects expression wiggle between two values