Graphics Programs Reference
In-Depth Information
Note
NURBS surfaces cannot be converted to procedural surfaces or solids. Each sol-
id face is converted into a separate surface.
Editing NURBS surfaces
Basically, there are two ways to edit NURBS surfaces: applying the
3DEDITBAR
command and editing control vertices. These can be shown, dragged to new posi-
tions, thus modeling the surface, and vertices can be added or removed. A last com-
mand allows rebuilding the surface.
The 3DEDITBAR command
The
3DEDITBAR
(no alias) command allows modifying NURBS surfaces and splines
by moving points and changing direction and magnitude at specific points. Besides
the command line, the command is available only on the ribbon,
Surface
tab. The
command starts by prompting the selection of a NURBS surface or spline:
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