Apple Motion 4 - Manual (Page 1120)

• Stroke Length: Stroke Length is mapped horizontally on the mini-curve editor graph
and provides a visual representation of the position of the changes in width value
(keyframes) over the length of the stroke. Use the sliders or enter a number in the value
field to change the value of the selected keyframe.
The Width Over Stroke parameter can be adjusted directly on the selected paint stroke
in the Canvas. For more information, see
Using the Width Over Stroke Onscreen Controls .
Brush Scale: A slider and value field that allow you to change the size of the brush (the
source of the dabs). Click the disclosure triangle to adjust the X and Y scale values
independently. By default, Scale is set to 100%—the size of the dabs is equal to the size
of the source brush. Unlike the width parameter in the style tab, brush scale adjustments
only affect the size of the dabs and don’t preserve the spacing between dabs.
Brush Scale Randomness: Defines an amount of variance in the scale of the stroke’s
brush. A value of 0 results in no variance—all dabs in the stroke are the same size. A value
greater than 0 introduces a variance. The scale for an individual dab is defined by the
Scale parameter, plus or minus a random value falling within the Brush Scale, Width Over
Stroke, and Width (in the Style pane) parameters. Click the disclosure triangle to adjust
the X and Y values independently.
Align Brush Angle: When this checkbox is selected, the stroke dabs automatically rotate
to match the shape on which they are positioned.
1120 Chapter 17 Using Shapes, Masks, and Paint Strokes