9

Offset Curve 1159
value,themorecloselythetangentparallelsthe
parent curve, and the smoother the tr a nsition. The
lowerthetension,thegreaterthetangentangle
and the sharper the transition between parent and
blend.
Tension 1—Controls tension at the edge of the first
cur ve you clicked.
Tension 2—Cont rols tension at the edge of the
second curve you clicked.
Blend Curve rollout (mod ification time)
"Tension" affects the tangent between a pa rent
curveandtheblendcurve.Thegreaterthetension
value,themorecloselythetangentparallelsthe
parent curve, and the smoother the tr a nsition. The
lowerthetension,thegreaterthetangentangle
and the sharper the transition between parent and
blend.
Tension 1—Controls tension at the edge of the first
cur ve you clicked.
Tension 2—Cont rols tension at the edge of the
second curve you clicked.
ReplaceFirstCurveandReplaceSecondCurve—Let
you replace the parent curves. Click the button,
then click the curve to replace the original first or
second curve.
Offset Cur ve
Select N U RBS object. > Modify panel > Create Curves
rollout > Dependent Cur ves group box > O ffset button
Select NURBS object. > Modify panel > NURBS toolbox >
Create Offset Curve button
An Offset curve is offset from the origina l, p a rent
curve. It is normal to the original. You can offset
both planar and 3D curves.
Curveusedtocreateanoffsetcurve
Procedure
To cre ate an offse t cu rve:
1.
In a NURBS object that contains at least
onecurve,turnonOffset.
2. Click the curve you want to offset, and drag to
set the initial distance.
An offset cur ve is created.
3. Adjust the Offset p arameter.
If the parent curve is not linear, increasing the
distance increasingly exaggerates the curvature
of the offset curve.