9

Modifying at the Sub-Object Level 507
In a row of column sub-objects, a single column has been
modified at the sub-object level.
Ma king a S ub-Object S election
These are the general steps in setting up an
object for sub-object selection. See Edit Modifiers
and Editable Objects (page 1–506) for more
information.
1. Convert the object into an editable object such
as an editable mesh, editable spline, editable
poly, and so on. (Some modifiers you can apply
to the object, such as Edit Mesh, Mesh Select or
Spline Select, also have sub-object levels.)
Tip: Work in a wireframe viewport so you can
see the geometr y.
2. On the modifier stack display, click the
plusicontotheleftofthenameofthemodifier
or editable object. This exp ands the object’s
hierarchy, showing the names of the sub-object
levels at which you can work.
3. On the stack display, choose the kind of
sub-object geometry you want to work with:
forexample,Vertex,Face,orEdge. Each
sub-object selection level has rollouts w ith their
own sets of options.
The sub-object level highlight is yellow by
default.
4. Use standard selection techniques to select
sub-object geometry, from a single sub-object
to the entire object. By default, the sub-object
selectionhighlightsinred.
Once you make a sub-object selection of geometr y,
you can do any of the follow ing:
• Apply any options supplied for the kind of
object and the selection level.
• Apply standard tr ansforms (move, scale,
rotate). See Transforming a Sub-Object
Selection (below).
• Apply object-space modifiers (Bend, Taper, and
Twist, for example) to perform useful modeling
operations.
•Bindaspace warp (page 2–55) to the selection.
The rest of the object is unaffected by the
warping.
• Use the toolbar commands Align (page 1–462),
Normal Align (page 1–465),andAlign To View
(page 1–468) with face selections.
Tr ans for ming a S ub-Object S election
Usinganeditablemesh,poly,patch,orspline,you
can directly t ransform any sub-object selection.
However, “Select” modifiers like Mesh Select (page
1–719) and Spline Select (page 1–831) enable only
selection.