Apple Motion 4 - Manual (Page 407)

For more information on combining behaviors and keyframes, see Combining Behaviors
with Keyframes .
Applying Behaviors
You can apply behaviors directly to objects in the Canvas, Layers tab, or Timeline. Some
behaviors automatically 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 their Position parameter.
Important: Text, Particles, Replicator, Audio, Shape, and Camera behaviors should only
be applied to their namesake objects. The Grow/Shrink and Fade In/Fade Out behaviors
cannot be applied to cameras and lights.
With the exception of the Custom behavior, Parameter behaviors can also be applied to
a parameter of an object (such as position) in addition to the object itself. For more
information, see
Applying Parameter Behaviors .
Note: The Create Layers At preference (in the Project pane of Motion Preferences), which
allows you to specify whether layers are created at frame 1, or at the current playhead
position, applies only to layers that are created or imported, such as text, shapes, or a
QuickTime movie file.
You can also apply behaviors directly to groups in the Layers tab or Timeline. Depending
on the applied behavior, all objects nested within that group are either affected 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 tab of the Inspector.
Tip: If you do not see the expected result when applying behaviors to objects, try turning
the Affect Subobjects parameter on or off or choosing a different option from the Affect
pop-up menu. These parameters determine whether the entire group or its components
(such as the child objects nested within that group) are affected by the behavior and
how an object interacts with surrounding objects, respectively. The Affect Subobjects
checkbox only appears in the Inspector when the Throw and Spin behaviors, or the
Simulation behaviors, are applied to a group or object that contains multiple objects,
such as a particle emitter or text.
To apply a behavior to an object
Do one of the following:
µ
Drag a behavior from the Library to an appropriate object in the Canvas, Layers tab, or
Timeline.
407 Chapter 9 Using Behaviors