Learning Blender: A Hands-On Guide to Creating 3D Animated Characters

Adding Constraints

Constraints make your rig work. You could say that they make bones react to other bones; for example, if you move a bone, you will cause a certain reaction in another part of the skeleton. Throughout this chapter, you’ll use a lot of constraints, but for now let’s see how they work and how you can add them to bones.

First, you need to know that most of the constraints have a “target,” which means that when a constraint is applied to a bone, it also targets another bone and the constraint is then created between them. For example, if you use the Track To constraint for an eye, you’d apply the constraint to the eye and you’d select as a target the bone that you want the eye to look at.

Caution

You can apply constraints to any ...