Apple Motion 3 - Manual (Page 1053)

Chapter 12 Using Shapes and Masks 1053
Width Over Stroke: This mini-curve editor allows you to customize the width of the
dabs over the length of the stroke. You can create a curve that gradually increases the
dabs’ width over the length of the stroke, create a curve that varies the dabs’ width
over the length of the stroke, and so on. Select or add a keyframe in the graph to make
changes to the Width Over Stroke and Stroke Length parameters. The start value for
the dab width is based on the value set in the Width parameter in the Style pane.
 Width Over Stroke: Use the sliders or enter a number in the value field to change
the value of the selected keyframe.
 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.
Using the Width Over Stroke Onscreen Controls
You can adjust the Width Over Stroke keyframe values directly in the Canvas. An
editable control appears at each keyframe in the stroke.
To use the onscreen Width Over Stroke controls:
1 In the Canvas, Control-click the paint stroke, then choose Stroke from the shortcut
menu.
Small control points (+) appear at each keyframe over the stroke. The red paint
guideline also appears.
2 Click the plus sign (+) that represents the keyframe you want to adjust.
Control handles appear on either side of the control point.
3 To increase the width of the dabs, drag away from the point; to decrease the width of
the dabs, drag toward the point.
4 To change the position of a width keyframe, drag the point along the length of the
stroke. Keyframes can be dragged over one another.
The mini-curve editor is updated as you make your onscreen adjustments.