Apple Motion 5.1.1 - Manual (Page 876)

Chapter 20 Shapes, masks, and paint strokes 876
When the Randomize 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
appear blue with white dots in the center of the point on the blue shape behavior spline. To
disable control points, click the control points. A disabled point is a darker blue with a dark dot in
the center of the point.
The darker blue control
point is disabled and is not
affected by the behavior.
The lighter blue control
point with the white dot
is enabled and is affected
by the behavior.
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; it is set to Multiplier when the Apply Mode is set to Multiply.
This parameter defines the maximum value the Randomize behavior will generate.
•
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 randomized, changing their position over the
duration of the behavior.
•
Tangents: The control points’ tangent handles (rather than the control points) of the shape
are randomized. The control points stay in a fixed position while the curves 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 Randomize 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 lets you adjust the amount of random variation per second. Higher
values generate faster variations, whereas lower values generate slower variations.
•
Noisiness: A slider that 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.
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