Apple Motion 3 - Manual (Page 403)

Chapter 5 Using Behaviors 403
Applying Parameter Behaviors to a Behavior
You can animate a behavior’s parameter by applying a Parameter behavior. For
example, you can apply the Oscillate Parameter behavior to the Drag parameter of the
Orbit Around behavior, then adjust the Start and End values to increase from 0 to 8
over time. This results in the orbit of the object slowly decaying, causing the object to
fall toward the center of the orbit.
For more information about adding Parameter behaviors, see “ Applying Parameter
Behaviors ” on page 380.
Keyframing Behaviors
If you need more control when animating a behavior’s parameters, you can use
keyframes. For example, you can keyframe the Drag parameter of the Orbit Around
behavior to grow and shrink the object’s orbit many times, creating a much more
complex animation path. Keyframing this animation path manually would be very
difficult, but by keyframing a single parameter within a single behavior, you can create
this effect with ease.
Object with Orbit Around parameter Oscillate Parameter behavior added to the Drag
parameter of the Orbit Around behavior
Default Orbit Around behavior Default Orbit Around behavior with keyframed
Drag parameter