Apple Motion 2 - Manual (Page 364)

364 Chapter 5 Using Behaviors
The Apply Mode parameter determines how values generated by this behavior are
combined with other behaviors and keyframes that affect the same parameter. This
provides you with different ways of using a Randomize behavior to modify a
parameter’s preexisting values.
The Randomize behavior is useful for creating jittery effects, such as twitchy rotation,
flickering opacity, and other effects requiring rapid and varied changes over time that
would be time consuming to keyframe. The Randomize behavior can be modified with
other behaviors, such as Average and Negate, to exercise further control over the
values being generated.
Dashboard control
The Dashboard has controls for Amount, Multiplier, Frequency, Noisiness, Link (for
multidimensional parameters), Start Offset, End Offset, and parameter assignment.
Parameters in the Inspector
Amount/Multiplier: This parameter is set to Amount when the Apply Mode is set to
Add, Subtract, or Add and Subtract; and is set to Multiplier when the Apply Mode is set
to Multiply. This parameter defines the maximum value the Randomize behavior will
generate.
Apply Mode: A pop-up menu that determines how values generated by this behavior
are combined with other behaviors and keyframes that affect the same parameter. This
provides you with different ways of using a Randomize behavior to modify a
parameter’s preexisting values. The options are Add, Subtract, Multiply, or Add and
Subtract.
Frequency: A slider that lets you adjust the amount of random variation per second.
Higher values will generate faster variations, whereas lower values will generate slower
variations.
Noisiness: Adds an additional overlay of random variance to the Frequency you’ve set.
Higher Noisiness values result in more erratic variations in the affected parameter.
Link: This parameter appears when you apply this behavior to a multidimensional
parameter (for example, Position or Scale consists of X and Y values). Turn this checkbox
on to keep the behavior’s effect on each value proportional.
Affect Objects: This parameter only appears when the Randomize behavior is applied
to a replicator. When Affect Objects is turned on, each object has a different random
behavior. When turned off, each object undergoes the same animation.
Affects Parameters affected
Individual parameter Any
01112.book Page 364 Sunday, March 13, 2005 10:36 PM