5

Behavior Effects in the Keyframe Editor
If you open the Keyframe Editor and look at a parameter affected by a behavior, you see
a noneditable curve that represents the behavior’s effect on that parameter. The
noneditable curve (in this example, opacity channel animation that corresponds to the
Fade In/Fade Out behavior) appears in addition to that parameter’s editable curve, which
can be used in combination to keyframe that parameter.
Noneditable curve
Editable curve
Note: Use the pop-up menu above the Keyframe Editor to select which parameters are
displayed and to create curve sets. For more information on curve sets, see Custom
Parameter Sets.
For more information on combining behaviors and keyframes, see Combining Behaviors
with Keyframes.
Applying Behaviors
You can apply behaviors to objects in the Canvas, Layers list, or Timeline. Some behaviors
animate specific parameters of the layer to which they’re applied. For example, the Throw
behavior affects only an object’s Position parameter, and the Grow/Shrink behavior affects
only an object’s Scale parameter. Other behaviors animate the parameters of layers that
surround the layer to which the behavior is applied. For example, the Attractor behavior
causes other layers to move toward the affected layer by animating each of their Position
parameters.
Important: Text, Particles, Replicator, Audio, Shape, and Camera behaviors should only
be applied to their namesake objects.
Parameter behaviors can be applied to a parameter of an object (such as position). For
more information, see Applying Parameter Behaviors.
You can also apply behaviors to groups in the Layers list or Timeline. Depending on the
applied behavior, all objects nested in that group are affected in one of two ways: as if
they were a single object or as individual elements. You can often change this result by
adjusting the Affect or Affect Subobjects parameter in the Behaviors Inspector.
372 Chapter 9 Using Behaviors