Apple Motion 4 Bedienungsanleitung PDF herunterladen (Seite 402)

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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 over the duration

of the 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

apply two or more keyframes with different values to a parameter, 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.

The animation created by behaviors can be converted into keyframes. For more

information, see Converting Behaviors to Keyframes.

402 Chapter 9 Using Behaviors

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