Apple Motion 5.1.1 - Manual (Page 880)

Chapter 20 Shapes, masks, and paint strokes 880
Wriggle Shape
This behavior works similarly to the Randomize behavior, but with a slower effect.
When the Wriggle Shape behavior is applied to a shape, all control points of the shape are
affected by default. When the behavior is selected in the Layers list, affected control points
are highlighted in white on the blue shape behavior spline. To disable control points, click the
control points. A disabled point appears blue.
Parameters in the Inspector
•
Amount/Multiplier: A slider that defines the maximum value the Wriggle behavior generates.
When the Apply Mode is set to Add, Subtract, or Add and Subtract, the slider is labeled
Amount; when the Apply Mode is set to Multiply, the slider is labeled Multiplier.
•
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) are wriggled.
The control points stay in a fixed position while the curves between the points are animated.
•
Points and Tangents: Both the control points and tangent 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.
There are four options:
•
Add: Values generated by this behavior are added to other behaviors and keyframes that
affect the same parameter.
•
Subtract: Values generated by this behavior are subtracted from other behaviors and
keyframes that affect the same parameter.
•
Multiply: Values generated by this behavior are multiplied by other behaviors and keyframes
that affect the same parameter.
•
Add and Subtract: Values generated by this behavior are added to and subtracted from other
behaviors and keyframes that affect the same parameter.
•
Frequency: A slider that sets the amount of random variation per second. Higher values
generate faster variations, whereas lower values generate slower variations.
•
Wriggle Offset: A slider that offsets 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.
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