Autotek autocad raster design 2010 用户手册

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Dialog Box
Vectorizing Raster Rectangles
You can convert a raster rectangle to a vector rectangle by using the Rectangle
tool.
NOTE To make the most efficient use of the Rectangle tool, you should first adjust
the settings on the VTools General tab on the Raster Design Options dialog box.
For more information, see 
 (page 362).
To convert a raster rectangle to a vector rectangle
Click Image menu  ➤  Vectorization Tools  ➤  Rectangle.
Click the first corner of the raster rectangle.
NOTE You can cancel the selection of a point by typing u (Undo) after you
pick the point.
Select a point to define the angle of the rectangle, or press Enter to accept
0 (zero) as the angle.
The cursor now controls the size of the vector rectangle.
Expand the rectangle to the desired size, then click the location of the
corner opposite the first corner.
Do one of the following
Press Enter or right-click to draw the rectangle with the current height,
width, and angle.
Enter v (Verify) to see the rectangle’s current size and orientation
angle. If you want to change one of these values, enter h (Height), w
(Width), or a (Angle) and enter a numeric value or pick a point to
define the new value.
TIP Use raster snapping to make it easier to pick points on the raster entity you
are converting. For more information, see 
 (page
237).
212 | Chapter 8   Converting Raster Entities to Vector