9

CV Surface 1103
Create Parameters rollou t
Lengt h—The length of the surface in current
3ds Max units.
Width—Thewidthofthesurfaceincurrent
3ds Max units.
On the Modif y p anel, the Leng th and Width
spinners are no longer available. You can change
the length or width of the surface by scaling the
surfaceattheSurfacesub-objectlevel. Moving
point sub-objects also alters the length and width
of the surface.
Length Points—The number of points along the
length of the surface. In other words, the initial
number of point columns in the surface. Range=2
to 50. Default=4.
Width Points—The number of points along the
width of the surface. In other words, the initia l
number of point rows in the surface. Range=2 to
50. D efault=4.
On the Modif y panel, the point Leng t h and Width
spinners are no longer available. You can change
thenumberofrowsandcolumnsbydeleting
existing rows and columns, or by adding new rows
and columns using the Refine controls at the Point
sub-object level.
Generate Ma pping Coordinates—Generates
mapping coordinates s o you can apply mapped
materials to the surface.
The Generate Mapping Coordinates control is
present on the Modify panel. It is at the Surface
sub-object level.
Flip Normals—Turn on to reverse the direction of
the sur face normals.
The Flip Normals control is present on the Modify
panel. It is at the Surface sub-object level.
When you modify a point surface, a rollout lets
you change its surface approximation settings (page
1–1239).
CV Surf ace
Create panel > Geometry > NURBS Surfaces > CV Surf
Createmenu>NURBS>CVSurface
The CVs in a control lattice shape the surface it defines.
CV surfaces are NURBS surfaces (page 1–1101)
controlled by control vertices (CVs (page 3–926)).
TheCVsdon’tlieonthesurface. Theydefine
a control lattice (page 3–923) that encloses the
surface. Each CV has a weight that you can adjust
to change the shape of the surface.
Because an initial NURBS sur face is meant to
be edited, the surface creation parameters do
not appear on the Modify panel. In this respect,
NURBS surface objects are different from other