9

Editing Surface Sub-Objects 1141
rebuild the curve. Rebuilding the curve can change
its appearance.
Reparam.—Displays the Reparameterize dialog
(page 1–1237). Reparameterizing a curve changes
the curve’s parameter space (page 3–988) to
provide a better relation between control point
locations and the shape of the curve.
Tip: It is a good idea to reparameterize after
youhaveaddedCVstothecurvebyrefiningor
inserting.
Point Curve rollout
This additional rollout appears when a point curve
is selected.
Clo se—Closesthecurve.Disabledifthecurveis
already closed.
Editing Surface Sub-Objects
Modify panel > Stack display > Open the NURBS objec t’s
hierarchy. > Surface sub -object level > Select surface
sub-objects.
This topic describes controls that are common
to point surfaces, CV surfaces, and the various
dependent surface t ypes. A rollout labeled Surface
Common contains the surface sub-object controls
for NURBS surf aces. Another rollout, Material
Properties (page 1–1149), controls mapping on
surface sub-objects, and is described in its own
topic. See Surface Approximation (page 1–1239)
for a description of that rollout. The final rollout
for surface sub-objects depends on the type of
surface selected.
Procedures
To transform sur face sub-objects:
1.
At the Surface sub-object level, select one or
more sur face sub-objects.
The sub-object selection tools are the same as
for other kinds of sub-objects. In addition,
you can use the
H key when the Keyboard
Shortcut Override toggle (page 3–872) is on. See
Sub-O bject Selection (page 1–1084).
The Selection group box, described under
"Interface" later in this topic, provides
additional options for selecting surfaces.
2. Turn on Move or another transform and then
drag in a viewport to transform the selection.
Theshapeofthemodelchangesasyou
interactively transform the surfaces.
Tip: The Lock S elect ion Set button is useful
when you t ransform NURBS sub-objects. You
canmakeaselectioninoneviewport,click
Lock Selection Set (or press the
Spacebar ),
andthentransformtheselectioninadifferent
view por t.
To use the k eyboard to select sur face sub-objects:
Yo u c a n s e l e c t s u r f a c e s u b - o b j e c t s u s i n g t h e Ctrl
key and the arrow keys. The arrows traverse the
sub-objects in the order they were created. To do
so, follow these steps:
1. Turn on the Keybo a rd Shor tc ut
Override Toggle.
2. At t he Surface sub-object level, set the
selectioncontrolstoselectsurfacesindividually.
3. Click or drag to select surfaces.
4. Hold down Ctrl and use the arrow keys to
move among surfaces in the current model.