Apple Motion 5.1.1 - Manual (Page 862)

Chapter 20 Shapes, masks, and paint strokes 862
In the following illustrations, the Spacing Over Stroke curve in the mini-curve editor is adjusted
so a greater value is used at the start of the stroke, and 100% is used at the end of the stroke.
The dabs at the beginning of the stroke are spaced more widely apart and get closer at the
end of the stroke.
Two additional controls in the Spacing Over Stroke mini-curve editor let you fine-tune the
value of selected points of the curve in the graph:
•
Spacing Over Stroke: A slider that adjusts the spacing between dabs at the selected keyframe.
Increasing this parameter increases the spacing between each dab in the stroke.
•
Stroke Length: A slider that determines where along the range of the dabs within the stroke
the Spacing Over Stroke value (for the selected keyframe) is applied.
•
Fixed Brush Dabs: A checkbox that, when selected, keeps the number and spacing of the dabs
constant regardless of the changes in the stroke’s shape over time caused by behaviors or
keyframe animation. The effect of this parameter is not visible when editing a paint stroke on a
single frame.
•
Anchor Dabs To: A pop-up menu, available when the Fixed Brush Dabs checkbox is deselected,
that defines how dabs are added to or removed from a paint stroke when the length of the
paint stroke is modified. When the Fixed Brush Dabs checkbox is selected, dabs are anchored
to the start and end of the paint stroke. There are two options:
•
Start: Adds dabs to or removes dabs from the start point of a paint stroke when the length
of the paint stroke is modified. The first dab on the stroke remains fixed.
•
Start and End: Adds dabs to or removes dabs from the start and end points of a paint
stroke when the length of the paint stroke is modified. The first and last dabs on the stroke
remain fixed.
Note: Changing a shape’s control points or adjusting the Width or Spacing parameters (in the
Style pane) or Spacing Over Stroke and Width Over Stroke parameters (in the Stroke pane)
affects the dab spacing because larger dabs can be spaced further apart.
•
Width Over Stroke: A mini-curve editor that lets you 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. For more information on using the mini-curve editor,
see
Mini-curve editor on page 482.
Two additional controls in the Width Over Stroke mini-curve editor let you fine-tune the values
of selected points of the curve in the graph:
67% resize factor