192
AutoCAD and Its Applications—Advanced
You can use the
SELECTIONCYCLING
system variable to turn on selection
cycling instead of using the
[Shift]
key and space bar. The
Selection Cycling
button
on the status bar is used for toggling selection cycling. There are three settings for
the system variable:
• Off (0).
• On, but the list dialog box does not display (1).
• On and the list dialog box displays the selected objects that can be cycled
through (2).
It is recommended that you turn on selection cycling. With selection cycling turned
on, you can cycle and select the faces that may overlap one another.
In Figure 8-4, the two 3D objects occupy the same space. The tapered 3D object
needs to be moved up using the
3DMOVE
command. Turn on selection cycling. When
you select the tapered object, the
Selection
dialog box lists the objects overlapping
at the pick point. Select which object you want to work with by picking it in the
dialog box. As your cursor is over an object in the list, the object is highlighted in the
drawing area.
Figure 8-3.
A—The object appears in its current state with the
Show History
property turned off. The
History
property was initially set to
Record
before subtracting two solid primitives. B—The
Show History
property is set to
Yes
and the display of isolines has been turned on. C—When the sphere
is selected while pressing the
[Ctrl]
key, grips are displayed to indicate the sphere primitive
subobject is selected. The move grip tool can be used to edit the original sphere primitive.
A
B
C
Move
grip
tool
Type
SELECTIONCYCLING
Toolbar
Status Bar
Selection Cycling
SELECTIONCYCLING