346
AutoCAD and Its Applications—Basics
Copyright Goodheart-Willcox Co., Inc.
NOTE NOTE
NOTE NOTE
When you trim one infi nite end of an xline, the object becomes a ray.
When you trim both infi nite ends of an xline or the infi nite end of
a ray, the object becomes a line. Therefore, in many cases, you can
modify xlines and rays to become a portion of the actual drawing.
Exercise 11-6
Complete the exercise on the companion website.
www.g-wlearning.com/CAD
Stretching Stretching
The
STRETCH
command allows you to modify certain dimensions of an object
without changing other dimensions. In mechanical drafting, for example, you can
stretch a screw body to create a longer or shorter screw. In architectural design, you
can stretch room sizes to increase or decrease square footage.
Once you access the
STRETCH
command, you must use a crossing box, crossing
lasso, or crossing polygon to select only the objects to stretch. This is a very important
requirement and is different from object selection for other editing commands. See
Figure 11-25. If you select using the pick box or a window, the
STRETCH
command
works like the
MOVE
command, as described in Chapter 12.
After selecting the objects to stretch, specify the base point from which the objects
will stretch. Although the position of the base point is often not critical, you may want
to select a point on an object. For example, select the corner of a view or the center of
a circle. The selection stretches or compresses as you move the crosshairs. Specify a
second point to complete the stretch.
base point: The
initial reference
point AutoCAD uses
when stretching,
moving, copying,
and scaling objects.
STRETCH
Ribbon
Home
Modify
Stretch
Type
STRETCH
S
Figure 11-25.
Using the
STRETCH
command to edit
specific dimensions.
Preview the operation
before making the
second pick.
Select objects using
crossing selection
Option 1, 25-Gallon Tank
Stretching
Option 2, 50-Gallon Tank
Stretch to here
(endpoint)
Base
point