Apple Motion 3 - Manual (Page 372)

372 Chapter 5 Using Behaviors
For step-through examples of using behaviors, see “ Behavior Examples ” on page 483.
Behaviors Versus Keyframes
It’s important to understand that behaviors do not add keyframes to the objects or
parameters to which they’re applied. Instead, behaviors automatically generate a
range of values that are then applied to an object’s parameters, animating it over the
duration of that behavior. Changing the parameters of a behavior alters the range of
values that behavior generates.
Keyframes, on the other hand, apply specific values directly to a parameter. When you
create two or more keyframes with different values, you animate that parameter from
the first keyframed value to the last.
By design, behaviors are most useful for creating generalized, ongoing motion effects.
They’re also extremely useful for creating animated effects that might be too complex
or time-consuming to keyframe manually. Keyframing, in turn, may be more useful for
creating specific animated effects where the parameter you’re adjusting is required to
hit a specific value at a specific time. For more information on using keyframes, see
“
Keyframes and Curves ” on page 503.
The animation created by behaviors can be converted into keyframes. For more
information, see “
Converting Behaviors to Keyframes ” on page 404.