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1192 Chapter 9: Sur face Modeling
Lathe S ur face
SelectNURBSobject.>Modifypanel>CreateSurfaces
rollout > Dependent Surfaces group box > Lathe
Select NU RB S object. > Modify panel > NURBS toolbox >
Create Lathe Surface button
A lathe surface is generated from a curve
sub-object. It is similar to a surface created with
the Lathe modifier. The advantage is that a lathe
sub-object is p a rt of the NURB S model, so you
can use it to construc t other curve and surface
sub-objects.
Surface created by lathing a curve
Procedure
To create a lat he s ur f ace:
1.
In a NURBS object that contains at least
onecurve,turnonLathe.
2. Click the curve to lathe.
ThelathesurfacerotatesabouttheNURBS
model’s local Y axis. The initial lathe amount
is 360 degrees. A gizmo (yellow by default)
indicates the axis of the lathe. Transforming the
lathe surface’s gizmo changes the shape of the
lathe, and lets you lathe around an axis that isn’t
aligned with a lo ca l coordinate axis.
The Flip Normals control lets you flip the
surface normals at creation time. (After
creation, you can flip normals using controls on
the Surface Common rollout.)
3. Adjust the lathe parameters.
Interf ace
Whilealathesub-objectisselected,arolloutwith
the lathe p arameters is d isplayed at the bottom of
the Modify panel.
Lathe Surface rollout (creation time)