Join Ran Ben Avraham for an in-depth discussion in this video Adding a bounce-decay-stop expression to all the moving parts, part of After Effects: Bouncing Animated 3D Sphere.
- Now that our sphere is fully rigged…and ready for animation,…I would like to introduce a very nice expression…that I often use in my work: bounce decay stop.…Now, this expression is a very long expression,…and I'm not going to dive in too much into this expression…and how it works. What you need to know is that…this expression works on almost any property…of most of the layers and effects in After Effects.…But what exactly does it do?…Well first of all, let's copy all of this expression,…and we can hide this notepad.…
Let's create a new layer, Ctrl + Y.…And I'll make it... Well, lets say,…100 on 100,…and okay.…And I'll isolate it, and we'll induce back the background.…Wonderful. Actually, we can scale it up a bit,…so we can see a little better, lets say 300.…Okay. Now let's say I would like this square to move…from one side to the other,…and I would like it to have a little bit of overshoot…and some bouncing at the end of it's animation. Now,…we can animate that with keyframes,…but we can use this expression to do the work for us…
This is a project-based learning experience. Each step of the process is rich with object lessons that are applicable to the variations that a motion design and compositing artist will face in the real world.
- Creating a sphere
- Adding reflections and color correction
- Creating squash and stretch animation
- Expression linking a sphere's rotation properties
- Connecting a sphere to a position null
- The bounce-decay-stop expression
- Animating the position and rotation
- Animating the sphere color map
- Creating an automated shadow