Apple Motion 3 - Manual (Page 1004)

1004 Chapter 12 Using Shapes and Masks
 To create more detailed curves, create more points. However, it’s a good habit to use
the fewest number of points necessary to create the amount of detail you need.
Shapes with an excessive number of points can be difficult to edit later on.
 In many instances, it is easier to create a loose group of control points first, and then
adjust them afterwards to create the precise curve you need in a later step.
4 While drawing a shape, you can move and adjust the control points you’ve already
created prior to finishing the shape. You can adjust any control point except for the first
one you created, since clicking the first point closes the shape.
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Tip: If you need a closer look at what you’re doing, you can magnify the Canvas while
in the middle of drawing a shape. You can also scroll around by pressing the Space bar
while you drag in the Canvas.
5 When you’re ready to finish your shape, do one of the following:
 Click the first point you drew to create a closed shape.
Simple B-Spline curve Multi-point B-Spline curve
Starting with a loose collection of points Fine-tuning the illustration later