2011

■ Selecting a shape or group of shapes from the mask list.
■ Selecting a shape or group of shapes in the Player.
There are two mask editing tools in the Garbage Mask UI; the Point tool and
the Transform tool.
Use the Point tool to edit mask points. Depending on what hot key is pressed
and on the location of the mouse cursor, the mouse cursor updates and displays
a visual cue for the current edit mode.
You can nudge the position of selected mask control points, selected shapes,
and edge handles (in increments of one pixel) by holding down the Shift key
and pressing the arrow keys on the keyboard. To nudge the position of control
points, selected shapes, and edge handles in increments of 10 pixels, hold Ctrl
+ Shift and press the arrow keys on the keyboard.
The following mask point parameters (for each point) can be animated. They
are accessible from the animation timeline and expressions can be assigned
to all of them:
■ X
■ Y
■ Tangent In angle
■ Tangent In Distance
■ Tangent Out angle
■ Tangent Out Distance
NOTE Tracking information can be assigned to point position—see Tracking and
Stabilizing
on page 753.
To insert a control point:
➤ Press and hold the Alt key and click on the curve dragging the point to
move it.
544 | Chapter 23 Masking