Apple Motion 3 - Manual (Page 1076)

1076 Chapter 12 Using Shapes and Masks
Parameters in the Inspector
Amount/Multiplier: This parameter is set to Amount when the Apply Mode is set to
Add, Subtract, Add and Subtract; it is set to Multiplier when the Apply Mode is set to
Multiply. This parameter defines the maximum value the Wriggle behavior generates.
Apply To: A pop-up menu that defines whether the behavior is applied to the shape’s
control points, tangent handles, or both points and handles.
 Points: The control points of the shape are wriggled, changing their position over
the duration of the behavior.
 Tangents: The control points’ tangent handles (rather than the control points) of the
shape are wriggled. The control points stay in a fixed position while the curves in
between the points are animated.
 Points and Tangents: Both the control points and handles are animated.
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 Wriggle behavior to modify a vertex’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 generate faster variations, whereas lower values generate slower
variations.
Wriggle Offset: A slider that allows you to offset the sequence of random values when
you want to apply the same Wriggle behavior to multiple shapes. By offsetting each
shape’s version of the Wriggle behavior, you can prevent them from moving in sync.
Noisiness: This slider adds an additional overlay of random variance to the Frequency
you’ve set. Higher Noisiness values result in more erratic variations in the affected
vertices.
Link: This parameter appears when you apply this behavior to a two-dimensional
(such as Shear) or three-dimensional parameter (such as Position or Rotation) that
consists of X, Y, and/or Z values. Turn this checkbox on to keep the behavior’s effect on
each value proportional.
Preserve Angle: When this checkbox is selected, the tangent handles become (or
remain) flat, maintaining the continuity of the curves.
Random Seed: A button that lets you pick a new random seed number. This number is
used to randomly generate new sequences of values, based on the other parameters of
this behavior.