8

1084 Chapter 9: Sur face Modeling
blend surface is a depende nt surface sub-object
that connects the edges of two other surfaces.
• You c an attach 3ds Max objects. If the attached
object is not already a NURBS object, it is
converted to NURBS geometry. You can attach
a NURBS curve, another NURBS surface, or
a convertible 3ds Max object. The attached
object becomes one or more curve or surface
sub-objects.
• You can import 3ds Max objects. The imported
object retains its parameters. While it is part
of the NURBS object it renders as a NURBS,
but you can still edit it parametrically at the
Importssub-objectlevel. Atthissub-object
level,viewportsdisplayitsusualgeometry,
not its NURBS form. A NURBS curve can
import NURBS cur ves or spline curves. A
NURBS surface can import curves, surfaces, or
convertible 3ds Max objects.
Note: Yo u c a n d e t a c h a N U R B S s u b - o b j e c t t o
make it a new, top-level NU RBS object, and
you can extract an imported object to create an
independent, top-level object once again.
Quad M enu for N URB S Objects
While a NURBS object is selected and the Modif y
panel is active, the
quad menu (page 3–741)
displays two quadrants that are sp e cifically for
NURBS editing.
Quad menu for modifying NURBS models
Tools 1 (upper -lef t) Qua dra nt
These options are gener al display and sub-object
level shortcuts.
Tran sform Degrade—Tog g l es Degradation
Override (page 1–34)
.
Display Sha ded Lattice, Display La ttices, Display
Sur faces, and Display Cur ves—
See Display Controls
for NURBS Models (page 1–1119)
.
Sub-objects—Displays the sub-object choices for
the selected object, as well as a Top-level choice.
Tool s 2 (l ower-lef t) Qua dra nt
These options are creation and editing shortcuts.
Cr e a t e C V S u rf ace, Cr eat e CV Curve, Cre a t e P o int
Sur face, Create Point Curve—
Thesecreateanew
NURBS sub-object.
Insert CV R ow, Inser t CV Column, Refine CV Cur ve,
Refine CV Row—
These add CVs to a CV Surface