Apple Motion 2 - Manual (Page 852)

852 Chapter 12 Using Shapes and Masks
Drawing and editing masks using these tools works identically to drawing and editing
shapes. The main difference is that while drawing a shape creates a new object in your
project, masks must be drawn on top of another object in your project. Once drawn,
masks are nested within the specific objects for which they were created in the Layers
tab and Timeline. Once a mask is attached to an object, a Masks icon appears to the
right of the name of the object. Toggle mask display by clicking this icon.
Note: Masks created for one object can be copied or moved to other objects.
To mask an object:
1 Select an object in the Canvas.
2 Choose a mask drawing tool (the Rectangle Mask tool, the Circle Mask tool, the Bezier
Mask tool, or the B-Spline Mask tool).
Note: If you haven’t selected an object, the mask tools are not available.
Click the Masks icon to
toggle the mask.
01112.book Page 852 Sunday, March 13, 2005 10:36 PM