24
AutoCAD and Its Applications—Advanced
Copyright Goodheart-Willcox Co., Inc.
change the UCS to the WCS, type
UCS
to access the
UCS
command and then type
W
for the
World
option.
When an isometric or other 3D view is displayed, you can easily switch to a plan
view of the current UCS by typing the
PLAN
command and selecting the
Current UCS
option. The
PLAN
command is discussed in more detail in Chapter 3.
NOTE NOTE
Selecting an orthographic view of a model using one of the methods
described previously produces a plan view, but it may not achieve
the results you desire. Three-dimensional models can be displayed in
AutoCAD using either parallel or perspective projection. Displaying
a plan view in either projection is possible. However, a true plan view,
as used in 2D orthographic projections, can only be created when the
model is displayed as a parallel projection. You can quickly change
the display from perspective to parallel, or vice versa, by picking
either
Parallel
or
Perspective
in the
View Controls
fl yout in the view-
port controls. The current projection is checked in the fl yout.
Exercise 1-2
Complete the exercise on the companion website.
www.g-wlearning.com/CAD
Introduction to the View Cube
You are not limited to the preset isometric viewpoints. In fact, you can view a 3D
object from an unlimited number of viewpoints. The view cube allows you to display
all of the preset isometric and orthographic views without making menu or ribbon
selections. It also provides quick access to additional pictorial views and easy dynamic
manipulation of all orthographic views. It allows you to dynamically rotate the view
of the objects to create a new viewpoint.
The view cube is displayed by default in the upper-right corner of the drawing
window. See Figure 1-13. It can be quickly turned on or off by selecting
ViewCube
from the
Viewport Controls
fl yout in the viewport controls. Refer to Figure 1-10A. The
NAVVCUBE
command controls the display of the view cube.
NAVVCUBE
Ribbon
View
Viewport Tools
View Cube
Type
NAVVCUBE
CUBE
Pick to
display the
View Manager
dialog box
Orthographic
preset views
Isometric
preset views
Figure 1-12.
Selecting preset
views using the
View
panel in the
Home
tab of the ribbon.