Adobe AFTER EFFECTS 5.5 Help Manual page 154

Adobe After Effects Help
Using Help | Contents
In the Layer window, press Shift as you drag a marquee over other unselected control
•
points.
In either the Layer or Composition window, select a mask and press Shift as you click
•
other unselected masks with the selection tool.
To select all masks on a layer:
Choose Edit > Select All.
Scaling and rotating selected masks or points
In one step, you can scale and rotate an entire mask (or selected points in one or more
masks) using the Free Transform Points command. When you use this command, a
bounding box surrounds the selected points, and an anchor point displays in the center of
the bounding box to mark the effect point for the current transformation. You can scale
and rotate the selected control points by dragging the bounding box or its handles. You
can also change the point from which the mask rotates or scales by moving the bounding
box anchor point. The Free Transform Points bounding box handles and anchor point exist
independently of the handles and anchor point for the layer.
Note: When you animate rotation using Free Transform Points, the vertices of the mask
are interpolated in a straight line from keyframe to keyframe. Because of this, the results
may be different than you expect.
B
A
A. Free Transform Points bounding box B. Bounding box handle
C. Bounding box anchor point D. Layer anchor point
To move, scale, or rotate a mask or control points:
1 Display the layer containing the mask or masks you want to transform in the Compo-
sition or Layer window.
2 With the selection tool chosen, do one of the following:
To change a certain number of points, select the control points you want to transform
•
and choose Layer > Mask > Free Transform Points.
To transform the entire mask, select it in the Timeline window and choose Layer > Mask
•
> Free Transform Points.
3 To move the bounding box's anchor point, position the selection tool over the
bounding box anchor point ( ) until the selection tool changes to a move anchor point
icon ( ). Drag to position the anchor point.
Using Help | Contents
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C
D
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Working with Masks and Transparency
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