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1232 Chapter 9: Sur face Modeling
button works differently.) The se controls are
disabled while you create a new curve on surface.
Refine—Ad ds points to the curve. This does not
change curvature. For point curves, the curvature
can change, but only slightly.
Insert—(Not available for point curves on
surfaces.)
Clo se—Closes the curve.
Fuse —Fuses two points.
Weigh t—(Not available for point curves on
surfaces.)
Delete—Deletes the selected points.
Open—Opens the curve by unfusing the points
wherethecurvewasoriginallyclosed.
Unfuse—Unfuses the selected points.
Remove Animation—Removes animation
controllers from the selected points or CVs.
Edit Tex ture Surf ace Dia log
Modify panel > Select N URBS surface sub-object. >
Material Properties rollout > Texture Channels group box
> Turn on Gen. Mapping Coords. > Texture Surface g rou p
box > Choose User-Defined. > Edit Texture Sur face b utton
This dialog lets you edit the texture surface for a
surface sub-object. I t is available when you have
chosen User Defined as the sub-object’s texture
surface method.
A texture surface is associated with the surface
sub-object. T he texture surface is used to control
how materials are mapped. In effect, changing
thetexturesurfacestretchesorotherwisechanges
the U V coordinates for the surface, altering the
mapping.
TheEditTextureSurfacedialogshowsa2Dviewof
the texture surface. You can also edit user-defined
texture surfaces directly in 3D view p orts, using the
Edit Texture Points button. See
Material Properties
Rollout (page 1–1150)
.
Mapscanshiftwithcertainsurfaceapproximation
methods. This effect is especially noticeable when
thesurfacehasanimatedCVs.Youcanreduceor
eliminate map shifting by changing the mapping
method to User Defined.
Tip: Don’t use the UVW Map mo difier to apply a
texture to an animated NURBS surface.
Interf ace
Toolbar
Thetoolbarabovethesurfaceimageprovides
selection, tr ansform and viewing controls.
These controls work the way their analogs do in
view por ts.
Note: You can animate transforms to the texture
surface points.
Select—Selects one or more points. Drag a window
to select multiple points or CVs.
Move—Moves the selected points.