Apple Motion 3 - Manual (Page 461)

Chapter 5 Using Behaviors 461
An object with the Attracted To behavior moves toward a single specified target, the
object of attraction. Additional parameters allow you to adjust the area of influence
that defines how close an object needs to be to move toward the object of attraction,
and how strongly it is attracted.
The Drag parameter lets you define whether attracted objects overshoot and bounce
about the attracting object, or whether they eventually slow down and stop at the
position of the target object.
You can apply two or more Attracted To behaviors to a single object, each with a
different object of attraction, to create tug-of-war situations where the object bounces
among all the objects it’s attracted to.
HUD Control
The HUD has an object well you can use to assign an object of attraction, as well as
Strength, Falloff Type, Falloff Rate, Influence, Drag, and axis assignment parameters.
When applied to an object that contains multiple objects (such as a group, particles,
text, or the replicator), the Affect Subobjects checkbox also appears in the HUD.
Parameters in the Inspector
Affect Subobjects: This parameter appears 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 turned on, all objects within the parent object are affected
individually. When this checkbox is turned off, all objects within the parent object are
affected by the behavior together, as if they were a single object.
Object: A well that defines the object of attraction. To set the defined target object,
drag the object from the Layers tab to the object well in the Attracted To HUD or
Inspector. In the Layers tab, you can also drag the target object onto the Attracted To
behavior.
Strength: A slider defining 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.
Shape object of attraction
Shape object with
Attracted To
behavior
Animation path