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1182 Chapter 9: Surface Modeling
Point Surface rollout (modification time)
The close controls let you close a surface. They
appear on the Point Surface rollout while an
independentpointsurfacesub-objectisselected.
They have no effect if the surface is already closed
in that direction.
Close R ows—Closes the surface by joining the ends
of its rows.
Clo se Cols. —Closes the surface by joining the ends
of its columns.
Transform Surface
SelectNURBSobject. >Modifypanel>CreateSurfaces
rollout Dependent Surfaces group box > Transform
Select NURBS object. > Modify panel > NURBS toolbox >
Create Transform Surface button
A transform surface is a copy of the original
surface with a different position, rotation, or scale.
Surface created as a transform
Procedure
To create a transform surface:
• In a NURBS object that contains at least
one surface, turn on Transform.
To move the transform surface, click and drag
thesurfaceyouwanttoduplicate.Torotateor
scale the t ransform surface, click the p arent
surface, click to turn on Sub-Object on the
Modifier Stack rollout, choose Surface from the
drop-down list, and then use a transform to
rotate or scale the transform surface.
When you use Move to create the transform
surface, it simply copies the parent. (It doesn’t
exaggeratecurvatureasanoffsetsurfacedoes.)
Axis constraints don’t apply to the creation
of transform surfaces. You can click to create
the sur face in place; then once it is created,
transform it using constraints.
The Flip Normals control lets you flip the
surface normals at creation time. (After
creation, you ca
nflipnormalsusingcontrolson
the Surface Common rollout.)
You can later transform the transform surface as a
surface sub-obj
ect, and you can animate surface
sub-object transforms.
Interfa ce
Creation time
At creation time, transform surfaces have no
parameters.