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ADOBE PHOTOSHOP CS2
User Guide
3
Do one or more of the following:
•
To draw a straight segment, position the pointer where you want the first straight segment to end, and click.
Continue clicking to set endpoints for subsequent segments.
•
To draw straight lines in 45˚ segments, hold down Shift as you move to click the next segment.
•
To draw a freehand segment, hold down Alt (Windows) or Option (Mac OS), and drag. When you finish, release
Alt or Option and the mouse button.
•
To erase recently drawn straight segments, press the Delete key.
4
Close the selection border:
•
Position the Polygonal Lasso tool pointer over the starting point (a closed circle appears next to the pointer), and
click.
•
If the pointer is not over the starting point, double-click the Polygonal Lasso tool pointer, or Ctrl-click (Windows)
or Command-click (Mac OS).
To use the Magnetic Lasso tool
When you use the Magnetic Lasso tool
, the border snaps to the edges of defined areas in the image. The Magnetic
Lasso tool is not available for 32-bits-per-channel images.
The Magnetic Lasso tool is especially useful for quickly selecting objects with complex edges set against high-contrast
backgrounds.
1
Select the Magnetic Lasso tool and, if necessary, set options in the options bar.
2
Click in the image to set the first fastening point. Fastening points anchor the selection border in place.
3
To draw a freehand segment, either release or keep the mouse button depressed, and then move the pointer along
the edge you want to trace.
The most recent segment of the selection border remains active. As you move the pointer, the active segment snaps
to the strongest edge in the image, based on the detection width set in the options bar. Periodically, the Magnetic
Lasso tool adds fastening points to the selection border to anchor previous segments.
4
If the border doesn’t snap to the desired edge, click once to add a fastening point manually. Continue to trace the
edge, and add fastening points as needed.
Fastening points anchor selection border to edges
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