Apple Motion 5.1.1 - Manual (Page 358)

Chapter 9 Behaviors 358
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Include X, Y, and Z: Buttons that specify the space in which the affected object (or objects) drifts
toward the object to which it is attracted. For example, when X and Y are enabled, the object
drifts in the XY plane; when Y and Z are enabled, the object drifts in the YZ plane.
Drift Attractor
The Drift Attractor behavior is similar to the Attractor behavior, but by default objects within
the area of influence move toward the object of attraction and come to rest, rather than
overshooting the object of attraction and bouncing around.
Parameters in the Inspector
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Affect: A pop-up menu that limits which objects in your project are affected by the Drift
Attractor behavior. There are three options:
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All Objects: All objects in the Canvas are affected by the Drift Attractor behavior.
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Related Objects: The default setting. Only other objects in the same group as the object of
attraction are affected.
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Specific Objects: Only objects appearing in the Affected Objects list are affected by the Drift
Attractor behavior.
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Affected Objects: A list that appears when Specific Objects is chosen in the Affect pop-up
menu. Drag objects from the Layers list into this list to have those objects affected by the
behavior. To remove an item from the list, select the item and click Remove. There are two
menu items:
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Layer: This column lists the name of the layer containing the object.
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Name: This column lists the name of the object.
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Strength: A slider that sets the speed at which attracted objects move toward the target
object. With a value of 0, attracted objects don’t move at all. The higher the value, the faster
attracted objects move.
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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 options:
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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.
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Falloff Rate: A slider that determines 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 Falloff Type is 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.
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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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Include X, Y, and Z: Buttons that specify the space in which the object (or objects) drift toward
the target object. For example, when X and Y are enabled, the object drifts in the XY plane;
when Y and Z are enabled, the object drifts in the YZ plane.
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