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1134 Chapter 9: Surface Modeling
you finish dragging the CV selection, the active
constraint button turns off.
U—Constrains the CV selection to move in the
surface’s U dimension.
Keyboard shor tcut (Keybo ard Shortcut O verride
Toggle must be on):
Alt+U
V—Constrains the CV selection to move in the
surface’s V dimension.
Keyboard shor tcut (Keybo ard Shortcut O verride
Toggle must be on):
Alt+V
Normal—Constrains the CV selection to move
normal to the original surface.
Keyboard shor tcut (Keybo ard Shortcut O verride
Toggle must be on):
Alt+N
Delete group
These buttons delete CVs from the surface. Select
one or more CVs, and then click Row, Col., or
Both.
You can’t delete surface CVs if the deletion would
givethesurfacefewerthanfourrowsorfewerthan
four columns. Aside from that restriction, these
buttons delete all rows, columns, or rows a nd
columns t hat contain selected CVs. This means
that you can’t delete after you make a selection
using the R ow and Column or All selection
buttons: that would imply deleting the entire CV
surface.
Thesebuttonsareunavailableunlessthedeletion
is possible.
Wa rning: When you delete CVs, you lose the animation
controllers for all CVs on the surface.
Row—
Deletes rows of CVs from the surface.
Co l.— Deletes columns of CVs from the surface.
Both—DeletesbothrowsandcolumnsofCVs
from the surface.
Refine group
These buttons refine the surface by adding CVs.
Asyoumovethemouseoverthesurface,apreview
of the CVs that will be added, and their locations,
is dis played in blue.
Wa rn in g : When you add CVs with Refine, you lose the
animation controllers for all CVs on the surface.
Row—
Adds a row of CVs to the su rface.
Co l.— Adds a column of CVs to the surface.
Both—Adds both a row and a column of CVs to
the surface.
Tip: It is a good idea to reparameterize after you
have added CVs to a surface by refining. S ee
Editing Surface Sub-Objects (page 1–1141).
Insert group
These buttons insert CVs into the curve. Click
to turn on one of these buttons and then click
thesurfacewhereyouwanttoinsertthenew
CVs. Inser ting CVs is similar to refining with
CVs, except that other CVs in the surface do not
move . This means that the shape of the surface can
change when you insert.
Inserting CVs does not remove animation from
the surface the way refining does.
Row—Inserts a row of CVs into the surface.
Co l.— InsertsacolumnofCVsintothesurface.
Both—InsertsbotharowandacolumnofCVs
into the surface.
Tip: It is a good idea to reparameterize after you
have added CVs to a surface by inserting. See
Editing Surface Sub-Objects (page 1–1141).
Display Lattice—When on, displays the control
lattice (page 3–923) that surrounds CV surfaces.
When off, the control lattice isn’t show n in
view por ts. Default=on.