Apple Motion 5.1.1 - Manual (Page 357)

Chapter 9 Behaviors 357
Parameters in the Inspector
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Affect Subobjects: A checkbox, available when this behavior is applied to an object that
contains multiple objects, such as a group, a particle emitter, a replicator, or a text layer. When
this checkbox is selected, all objects in the parent object are affected individually. When this
checkbox is deselected, all objects in the parent object are affected by the behavior together.
•
Amount: Sliders that slow down an object over time, causing it to eventually come to a stop.
Higher Drag values result in the object coming to rest sooner. Click the Amount disclosure
triangle to adjust the drag applied to the X, Y, and Z values separately. An example of this is to
create a situation where an object’s vertical speed slows down faster than its horizontal speed.
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Include X, Y, and Z: Buttons that specify the space that Drag affects. For example, when X and Y
are enabled, the object drags in the XY plane; when Y and Z are enabled, the object drags in
the YZ plane.
Drift Attracted To
The Drift Attracted To behavior is similar to the Attracted To behavior, but by default an object
moves toward the object of attraction and comes to rest, rather than overshooting the object of
attraction and bouncing around.
Parameters in the Inspector
•
Affect Subobjects: A checkbox, available when this behavior is applied to an object that
contains multiple objects, such as a group, a particle emitter, a replicator, or a text layer. When
this checkbox is selected, all objects in the parent object are affected individually. When this
checkbox is deselected, all objects in the parent object are affected by the behavior together.
•
Object: An object well that defines the object of attraction. To set the defined target object,
drag the object from the Layers list to the Object well in the Drift Attracted To HUD or
Inspector. In the Layers list, you can also drag the target object onto the Drift Attracted
To behavior.
•
Strength: A slider that sets the speed at which the object moves toward the object of
attraction. With a value of 0, the object doesn’t move at all. The higher the value, the faster the
object moves.
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Falloff Type: A pop-up menu that determines whether the distance defined by the Influence
parameter falls off linearly or exponentially. There are two menu items:
•
Linear: Object attraction falls off in proportion to the object’s distance.
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Exponential: The closer an object is within the area of influence, the more strongly it is
attracted, and the faster it moves toward the object of attraction.
•
Falloff Rate: A slider that sets how quickly the force of attraction between objects affected by
this behavior falls off. A low Falloff Rate value results in objects quickly getting up to speed
as they move toward the object of attraction. A high Falloff Rate causes objects to accelerate
much more slowly. When set to Exponential, the attraction falls off more quickly than when set
to Linear.
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Influence: A slider that sets the radius of the circle of influence, in pixels. Objects that fall
within the area of influence move toward the object of attraction. Objects outside the area of
influence remain in place.
•
Drag: A slider that reduces the distance attracted objects overshoot the object of attraction.
Lower Drag values result in the object overshooting the object of attraction, moving past and
then careening back around toward the target object again and again. Higher Drag values
result in the object coming to rest sooner.
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