2010

Table Of Contents
techniques to animate the driving attributes. This indirectly animates the
driven attribute.
You may find the following notes helpful when using Set Driven Key:
You can set driven keys to control a driven attribute with multiple driving
attributes. For instance, you can have a muscle bulge when an elbow rotates,
and have the bulge increase when the wrist rotates.
Lesson 3: Path animation
Introduction
Path animation allows you to animate an object along a path specified by a
curve. In this way, the curve controls the motion of the object. With keyframe
animation, Maya calculates the motion of the object for the animation based
on the positions that were set at the keyframes. With path animation the
motion for the object is defined by its location along the path curve.
Path animation is useful for animating objects such as trains, boats, airplanes,
and moving cameras whose motion follows a set path. To animate an object
to do this type of motion smoothly with keyframe animation would require
you to laboriously create and edit many keys for the motion. By having the
object move along a curve, you can easily adjust the objects path by editing
the curve.
220 | Chapter 6 Animation