8

1132 Chapter 9: Sur face Modeling
Editing Surface CV Sub-Objects
Modify panel > Select NURBS object or sub-object. >
Stack d isplay > Surface CV sub-object level > Select CV
sub-objects.
Modify panel > Select NURBS object or sub-object. >
Right-click a viewport. > Tools 1 (upper-left) quadrant >
Sub-objects > Surface CV > Select CV sub-objects.
Transforming CVs changes the shape of the surface.
Procedures (page 1–1132)
Interface (page 1–1134)
This topic describes the controls for CV
sub-objects that lie on surfaces. A rollout labeled
CV contains the CV sub-object controls for
NURBS models. In addition to the CV rollout
described here, the Curve CV sub-object level
displays the
Soft Selection rollout (page 1–1148)
.
Pr ocedur es
To transform sur face CV sub-objects:
1.
At the Surface CV sub-object level, select one
or more CVs.
Thesub-objectselectiontoolsarethesameas
for other k inds of sub-objects. You can also
use the H key wh ile the status bar’s Keyboard
Shortcut Override Toggle button is on. See
Sub-Object Selection (page 1–1086)
.
The Selection group box, described under
"Interface" later in this topic, provides
additional options for selecting CV sub-objects.
2. Turn on Move or another transform and then
drag in a viewport to transform the selection.
Theshapeofthemodelchangesasyou
int eractively transform the CVs.
Rotate and Scale are useful only when you’ve
selected multiple CVs.
Tips
The Lo ck Selection Set button is useful
when you t ransform NURBS CV sub-objects.
You can make a selection in one viewport, click
Lock Selection S et (or press the SPACEBAR),
andthentransformtheselectioninadifferent
view por t.
•WhenyoumoveCVsub-objects,movethemas
systematically as possible to avoid "gett ing lost."
•Onsurfaces,avoidmovingCVssotheycross
over or under adjacent points. This can create
odd-looking warps or overlaps in the surface.
To SHIFT+clone surface sub-objects:
Hold down SHIFT while you transform the
surface selection.
The
Sub-Object Clone Options (page 1–1239)
dialog appears. This dialog provides various
ways to clone the surfaces, some of which
reduce relational dependencies to improve
performance.
To use the k ey boar d to select sur f ace CV sub-objects:
You c an select surface CV sub-objects using the
CTRL key and the arrow keys. The arrows traverse
the sub-objects in the order they were create d. To
do so, follow these steps: