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1124 Chapter 9: Sur face Modeling
Selection controls also include a Name field that
lets you customize the name of individual NURBS
sub-objects other than CVs. (The Name field is
the only selec tion control for Import sub-objects.)
Visibility
You ca n hide or unhide NURBS sub-objects as
you do other objects. Hidden sub-objects are
invisible in viewports, but remain renderable.
(Atthesub-objectlevel,hidingdoesn’taffectthe
renderer.) You can’t select hidden sub-objects.
Hide and unhide by name is available for curve
and sur face sub-objects.
Mak e Independent
You can make a dependent point, curve, or surface
sub-object independent.
Wa rni ng: When you make an object independent,
you lose the animation con trollers for all objects that
depend on it in turn. When you make point objects
independent, you lose the animation controllers for all
points on the curve or surface. Also, if you make a c urve
that trims a surface independent, you lose the trimming
of the sur face.
Remove Animation
All sub-objec t rollouts have a Remove Animation
button. This removes animation controllers f rom
the selected sub-objects.
Detach a nd Copy
You can create a new curve or sur face object by
detaching a curve or surface sub-object from
aNURBSmodel. Todoso,selectthecurve
or surface and then cl ick Detach. A dialog is
displayed, which lets you enter a name for the new
NURBS object. The new object is no longer part of
the or iginal N URBS object.
You can also use the Detach button to create a new
NURBSobjectthatisacopyofacurveorsurface
sub-object.Todoso,selectthecurveorsurface,
and click to turn on Copy before you click Detach.
A dialog is displayed, which lets you enter a name
for the new object. The original curve or surf ace
sub-object remains part of the NURBS object you
were editing, but the copied curve or surface is
now a NURBS object of its own.
Relational—This togg le affects dependent objects.
When off, detaching a dependent sub-object
makes it an independent object. For example,
detaching a U loft conv erts it to a CV surface.
When on, detaching a dependent sub-object also
detaches the objects it depends on, so the object
remains dependent. For example, detaching a U
loft also detaches the curves that define it.
Editing Point Sub-Objects
Modify panel > Select NURBS objec t or sub-objec t. >
Point sub-object level > Select point sub-objects.
Modify panel > Select NURBS objec t or sub-objec t. >
Right-click. > Tools 1 (upper-left) quadrant > Sub-objects
> Point > S elect point sub-objects.
This topic describes the controls for point
sub-objects. A rollout labeled Point contains t he
point sub-object controls for NURBS models. In
addition to the Point rollout described here, the
Pointsub-objectleveldisplaysthe
Soft Selection
rollout (p age 1–1148)
.
Procedures
To tra nsfor m point s ub-objects:
1.
At the Point sub-object level, select one or more
points.
The sub-object selection tools are the same as
for other kinds of sub-objects. You can also
use the H key while the status bar’s Keyboard
Shortcut Override Toggle is on. See
Sub-Object
Selection (page 1–1086)
.
The Selection group box, described under
"Interface" later in this topic, provides