Adobe illustrator 10 Manuale Utente
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Adobe Illustrator Help
Using Transparency, Gradients, and Patterns
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About opacity masks
An opacity mask lets you partially hide artwork using the mask’s luminosity. Patterns or
gradients contained in the mask are visible on the masked artwork.
gradients contained in the mask are visible on the masked artwork.
Creating opacity masks
You create the opacity mask from the topmost shape in the selected set of objects. Once
the mask is created, a thumbnail of it appears in the Transparency palette next to the
thumbnail of the object being masked. By default, the mask and the object are linked
together (as shown by a link between the thumbnails), and move together as a unit.
the mask is created, a thumbnail of it appears in the Transparency palette next to the
thumbnail of the object being masked. By default, the mask and the object are linked
together (as shown by a link between the thumbnails), and move together as a unit.
You can create an opacity mask from virtually any artwork imaginable, including a
gradient, mesh, or pattern (see
gradient, mesh, or pattern (see
).
To create an opacity mask:
Do one of the following:
•
Select at least two objects or groups, and choose Make Opacity Mask in the Trans-
parency palette menu. The topmost selected object or group is used as the mask.
•
Target a single object, group, or layer, and double-click the mask thumbnail area
(directly to the right of the object thumbnail) of the Transparency palette. An empty
mask is created and Illustrator automatically enters mask-editing mode. Use the
drawing tools to draw a mask shape.
mask is created and Illustrator automatically enters mask-editing mode. Use the
drawing tools to draw a mask shape.
Note: If you use black type to create an opacity mask with the Clip option turned on, the
type will not be visible. To see the type, use a different color of type or deselect the Clip
option.
type will not be visible. To see the type, use a different color of type or deselect the Clip
option.
To remove or disable an opacity mask:
Select the masked artwork and do one of the following:
•
Choose Release Opacity Mask in the Transparency palette menu to remove the mask.
The contents of the mask appear on top of the artwork that was masked.
•
Choose Disable Opacity Mask in the Transparency palette menu to deactivate the mask
without removing it. To reactivate the mask, choose Enable Opacity Mask from the
Transparency palette menu. A red x appears over the mask thumbnail in the palette.
Transparency palette menu. A red x appears over the mask thumbnail in the palette.
To edit an opacity mask:
1 Do one of the following to enter mask-editing mode:
•
Click on the mask thumbnail in the Transparency palette.
•
Alt-click (Windows) or Option-click (Mac OS) on a mask thumbnail to view only the
mask in the document window.
2 Use any of the Illustrator editing tools and techniques to edit the mask. Changes made
to the mask are immediately visible in the Transparency palette.
to the mask are immediately visible in the Transparency palette.
3 Click the artwork thumbnail in the Transparency palette to exit mask-editing mode.