Apple Motion 2 - Manual (Page 389)

Chapter 5 Using Behaviors 389
Vortex
The opposite of the Orbit Around behavior. While the Orbit Around behavior causes
one object to orbit around another target object, the Vortex behavior exerts a force on
all objects surrounding the object to which the Vortex behavior is applied.
Dashboard control
The Dashboard has a pop-up menu that lets you limit the objects affected by this
behavior, as well as controls for Strength, Falloff Type, Falloff Rate, Influence, Drag, and
Direction.
Parameters in the Inspector
Affect: A pop-up menu that limits which objects in your project are affected by the
Vortex behavior. There are three options:
• All Objects: All objects in the Canvas are affected by the Vortex behavior.
• Related Objects: The default setting. Only other objects that are within the same
layer as the object of attraction are affected.
• Specific Objects: Only objects appearing in the Affected Objects list are affected by
the Vortex behavior.
• Affected Objects: A list that appears when Specific Objects is selected in the
Affect pop-up menu. Drag objects from the Layers tab into this list to be affected
by the Vortex behavior when the Specific Objects option is selected in the Affect
pop-up menu. Drag the layer icon of objects in your project from the Layers tab to
add them to this list. Objects from any layer in a project can be dragged to the
Affected Objects list. To remove an object, select the object in the list and click
Remove.
Strength: A slider defining the speed at which the affected objects move about the
object of attraction.
Falloff Type: A pop-up menu that determines whether the distance defined by the
Influence parameter falls off linearly or exponentially. The default is Linear.
• Linear: Object attraction falls off in proportion to the object’s distance.
• Exponential: The closer an object is within the area of influence, the stronger it’s
attracted, and the faster it moves toward the object of attraction.
Affects Parameters affected
Other objects Position
01112.book Page 389 Sunday, March 13, 2005 10:36 PM