Graphics Programs Reference
In-Depth Information
Figure 22-11:
Revolving a closed object around an axis.
Modifying 3D Objects
Many of the modification techniques and commands that you use in 2D drafting can be
applied to 3D modeling. In addition, a specialized set of 3D editing commands is avail-
able. All these commands are located on the Modify panel of the Home tab when the 3D
Modeling workspace is current.
Selecting subobjects
3D objects themselves are complex objects that can be made up of several hundred —
even thousands of — objects. Although these objects never stray from their parent, you
can access them individually or in groups through subobject selection.
Subobject selec-
tion
means selecting a vertex, edge, or face of a 3D object. After you select a subobject,
you can use grip editing and the 3D gizmos to manipulate it. I discuss the 3D gizmos in
the following section.
To make it easier to select subobjects, you can enable subobject filtering from the Rib-
bon. Vertex, edge, and face filters are located on the Subobject Selection Filter split but-
ton on the Selection panel of the Home and Solid tabs.
The CULLINGOBJ and CULLINGOBJSELECTION system variables help limit
object selection to the faces that are visible in the current view by ignoring faces
