Animating with Deformers
As you learned in Chapter 1, “Working in Maya,” objects in a Maya scene have both a transform node and a shape node. The transform node contains data concerning where the object is in a scene, its orientation, and its scale. The shape node contains data about the form of the object. If you want to animate an object moving around in a scene, usually you'll keyframe the translation, rotation, and scale of the transform node. If you want to animate the shape of an object, such as the facial expressions of a character, you want to use a deformer, which is a type of animation control applied to the shape node of an object.
Deformers are extremely versatile, and they can be used for both modeling and animation and ...