8

U Loft Surface 1199
To create a U lof t with automatic atta ch (exa mple):
1.
From the Create panel, create three or more
independent CV or Point NURBS curves.
2. GototheModifypanel,andclicktoturnonU
Loft in the NURBS toolbox.
3. Selectthecurvesintheappropriateorderfor
the loft.
The U loft is created. You don’t have to collapse
the curves to a NURBS surface, or
attach them
to an existing NURBS model (page 1–1121)
.
Asyoumovethemouseoveracurvethatisnot
partoftheactiveNURBSobject,thecursor
changes shape to indicate you can pick the
cur ve, but the curve is not highlighted in blue.
Inter face
WhileaUloftsub-objectisselected,arolloutwith
the U loft par a meters is displayed at the bottom
oftheModifypanel. Thisrolloutappearsonly
when
one Uloftsub-objectisselected. Itisn’t
possible to edit more than one U loft at a time, so
unlike some other NURBS sub-objects, the rollout
doesn’t appear when multiple U loft sub-objects
are selected.
When you create lofted and swept surfaces, you
have access to al l the par a meters, and some of the
editing operations, of the surface. You can reverse
andsetstartpointsoncurveswhileyoucreate
the surface. You can also u se the arrow buttons
to change the order of the curves, and you can
remove a curve with the Remove button.
Tip: WhenyoueditaUloftsub-object,closethe
SurfaceCommonrollouttoseetheULoftSurface
rollout more easily.
U Loft Surface rollout (creation time)
UCurves—This list shows the name of the curves
youclickintheorderyouclickthem. Youcan
select curves by clicking their names. Viewp orts
display the selected curve in blue. Initially the first
curveistheoneselected.
You can a lso select more than one curve at a t ime.
This is usef ul when you use the Edit Curves button.
Arr ow B uttons—Usethesetochangetheorderof
curves used to constr uct the U loft. Select a curve
in the list, and then use the ar rows to move the
selection up or down.
Thesebuttonsareavailableatcreationtime.