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Bitmap Tool - user-created mask
<< Bitmap Tool - How to create a mask that includes selected areas | Bitmap Tool -How to apply a mask >>
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User's Guide
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Creating and applying masks
2
Using the Differences window to help you locate differences, place the
mouse cursor in the baseline bitmap window at the position where you
want to begin creating the mask. As you press and hold the left mouse
button, drag the mouse cursor to outline a rectangle. Then release the left
mouse button.
The following figure provides an example of a user-created mask for the
baseline bitmap of the Font dialog. Note that the rectangular outline in
the baseline map changes to a filled-in rectangle. The mask bitmap
window also contains a like-sized rectangle in the same relative location.
3
Repeat step 2 until you have completed the mask.
4
If you want to delete a portion of the mask, place the mouse cursor in the
baseline bitmap window at the position where you want to begin editing.
While pressing the Shift key and then the left mouse button, drag the
mouse cursor over the area of the existing map that you want to delete,
and then release the Shift key and the left mouse button.
The area of the mask overlapped by the rectangle outline disappears in
both the baseline and mask bitmap window.