Apple Motion 4 - Manual (Page 448)

Moving the Object and Its Motion Path
Moving an object automatically moves the object’s related motion path.
To move the object and its motion path
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Select the object (not the Motion Path behavior), and move the object in the Canvas.
Using Geometry for a Motion Path Shape
The following section describes how to use geometry as the source for a motion path
shape. You can use a shape that is animated with behaviors or keyframes as the source
for a motion path. This includes animated transforms (a shape changing its location in
the Canvas) and animated control points (a shape changing its shape due to keyframed
control points).
To use geometry for a motion path shape
1 Import (or draw) the shape you want to use as the path source.
2 Choose Geometry from the Path Shape pop-up menu.
The Shape Source well appears in the Inspector and HUD.
3 From the Layers tab, drag the shape to the Shape Source well.
4 When the pointer becomes a curved arrow, release the mouse button.
A thumbnail of the shape appears in the well and the shape is used as the source shape
for the motion path.
Note: You may want to disable the source shape in the Layers tab so that the source
shape is not visible in your project.
To select another geometry source for a motion path shape
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Choose the object you want to use as the motion path’s shape source from the To pop-up
menu (located next to the Shape Source image well).
Use the To pop-up menu
to choose another object
in your project as the
shape source for the
motion path.
Note: To align the rotation of the object to the shape of its motion path, you can apply
the Snap Alignment to Motion behavior (in the Basic Motion behaviors subcategory).
448 Chapter 9 Using Behaviors