Adobe 23101335 User Guide - Page 151
Using the lasso, polygonal lasso, and, magnetic lasso tools, Alt Windows or Option Mac OS, and drag.
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ADOBE PHOTOSHOP 6.0 141 User Guide 6 Do one of the following to make a selection: • With the rectangle, rounded rectangle, or elliptical marquee, drag over the area you want to select. Hold down Shift as you drag to constrain the marquee to a square or circle. To drag a marquee from its center, hold down Alt (Windows) or Option (Mac OS) after you begin dragging. • With the single row or single column marquee, click near the area you want to select, and then drag the marquee to the exact location. If no marquee is visible, increase the magnification of your image view. To reposition a rectangle, rounded rectangle, or elliptical marquee, first drag to create the border, keeping the mouse button depressed. Then hold down the spacebar and continue to drag. If you have finished drawing the border, drag from inside the selection. Using the lasso, polygonal lasso, and magnetic lasso tools The lasso and polygonal lasso tools let you draw both straight-edged and freehand segments of a selection border. With the magnetic lasso tool (Photoshop), the border snaps to the edges of defined areas in the image. The magnetic lasso tool is especially useful for quickly selecting objects with complex edges set against high-contrast backgrounds. To use the lasso tool: 1 Select the lasso tool ( ), and select options. (See "Setting options for the lasso, polygonal lasso, and magnetic lasso tools" on page 142.) 2 Drag to draw a freehand selection border. 3 To draw a straight-edged selection border, hold down Alt (Windows) or Option (Mac OS), and click where segments should begin and end. You can switch between drawing freehand and straight-edged segments. 4 To erase recently drawn segments, hold down the Delete key until you've erased the fastening points for the desired segment. 5 To close the selection border, release the mouse without holding down Alt (Windows) or Option (Mac OS). To use the polygonal lasso tool: 1 Select the polygonal lasso tool ( ), and select options. (See "Setting options for the lasso, polygonal lasso, and magnetic lasso tools" on page 142.) 2 Click in the image to set the starting point. 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 a freehand segment, hold down Alt (Windows) or Option (Mac OS), and drag. When finished, release Alt or Option and the mouse button.