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630Final Cut Pro User Guide
• Falloff: A slider that controls how “steep” the feathering is. Higher values result in
feathering that’s pushed farther inward, so the edge of the feathering effect is more
transparent. Lower values result in the “core” of the feathering effect being pushed
farther outward, so the edge of the feathering effect is less transparent.
• Transforms: A set of controls for adjusting the position, rotation, and size of your mask
effect.
To show the controls, click the Transforms disclosure triangle.
• Position X and Y: Controls that move the mask left and right (X) and up and down (Y).
• Rotation: A dial control that rotates the mask around its anchor point.
• Scale: A slider that changes the mask’s size as a percentage of the default mask
size.
You can also scale the mask along a single axis. To show the controls, click the Scale
disclosure triangle.
• Scale X and Y: Controls that scale the mask left and right (X) and up and down (Y).
• Control Points: When a Shape Mask is selected, the Convert To Points button is
available. Click this button to convert a Shape Mask to a Draw Mask with editable
control points.
Draw Mask controls
The Draw Mask contains the following adjustable controls:
• Shape Type: A pop-up menu that sets the type of control points used to define the
mask. For example, if you originally created a Bezier mask, you can choose B-Spline
from this menu to change how the mask is drawn. Changing the shape type might
dramatically change the mask’s form even though its control points remain fixed at their
original coordinates. There are three options:
• Linear: All of a mask’s control points are joined by hard angles, and the resulting
mask is a polygon. The control points of a Linear mask lie directly on its edge.
• Bezier: Control points can be a mix of Bezier curves and hard angles, creating any
sort of mask. The control points of a Bezier mask lie directly on its edge.
• B-Spline: Control points are all B-Spline points, with different degrees of curvature.
B-Spline control points lie outside the surface of the mask but are connected by the
B-Spline frame.