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1200 Chapter 9: Sur face Modeling
Curve Properties group
These cont rols affect individual cur ves you select
in the U Curves list, a s opposed to properties of the
loft surface in general. They are enabled only when
youhaveselectedacurveintheUCurveslist.
Reverse—When set, reverses the direction of the
selected curve.
Start Point—Adjusts the position of the curve’s
star t p oint.
Thiscontrolisdisabledifthecurveisnotaclosed
cur ve.
While you’re adjusting start points, a dotted
blue line is displayed between them, to show the
alignment. The surface is not displayed, so it
doesn’t slow down adjustment. When you release
the mouse button, the su rface reappears.
Tension—Adjusts the tension of the loft where it
intersec ts that curve.
Use COS Tangents—If the curve is a curve on
surface, turning on this toggle causes the U loft to
usethetangencyofthesurface.Thiscanhelpyou
blend a loft smoothly onto a surface. Default=off.
Thistoggleisdisabledunlessthecurveisapoint
or CV curve on surface.
Flip Tangents—Reverses the direction of the
tangents for that cur ve.
This toggle is disabled unless the curve is a point or
CV curve on surface and Use COS Tangents is on.
Auto Align Curve Sta rts—(Disabled.)
Close Loft —(Disabled.)
Insert—(Disabled.)
Remove—Removes a curve from the U loft surface.
Selectthecurveinthelist,andthenclickRemove.
This button is available at creation time.
Refine—(Disabled.)
Replace—(Disabled.)
Display While Creating—When on, the U loft
surfaceisdisplayedwhileyoucreateit.Whenoff,
the loft is created more quickly. Default=off.
Flip Normals—Reverses the direction of the U loft’s
normals.
U Loft Surface rollout (m odification time)
UCurves—This list shows the name of the curves
you click, in the order you click them. You can
select curves by clicking their names in this list.
View ports display the selected cur ve in blue.
Initially the first curve is the one selected.
You can a lso select more than one curve at a t ime.
This is usef ul when you use the Edit Curves button.