8

1-Rail Sweep Surface 1207
Exa mple: To create a 1-rai l sweep with a utomatic
attach:
1.
FromtheCreatepanel,createtwoindependent
CV or Point NURBS cur ves.
2. Go to the Modify panel, and click to turn on
1-Rail Sweep in the NURBS toolbox.
3. Selectthecurvesintheappropriateorderfor
the sweep.
The sweep is created. You don’t need to collapse
the curves to a NURBS surface or Attach them
to an existing NURBS model.
Asyoumovethemouseoveracurvethatisnot
partoftheactiveNURBSobject,thecursor
changes shape to indicate that you can pick the
cur ve, but the curve is not highlighted in blue.
Inter face
While a 1-rail sweep sub-object is selected, a
rollout with the 1-rail sweep parameters appears.
This rollout appears only when
one 1-rail sweep
sub-object is selected. It isn’t possible to edit more
than one 1-rail sweep at a time, so unlike some
other NURBS sub-objects, the rollout doesn’t
appear when multiple 1-rai l sweep sub-objects are
selected.
Tip: When you edit a 1-rai l sweep sub-object,
closetheSurfaceCommonrollouttoseethe1-rail
sweep Surface rollout more easily.
1-Rail Sweep Surface rollout (creatio n time)
Rail Curve—Shows the name of the curve you chose
to be the rail.
Replace R ail—(Disabled.)
Section Cur ves—Thislistshowsthenamesofthe
cross-section curves, in the order you click them.
You can select a curve by clicking its name in the
list. Viewports display the selected curve in blue.
Arr ow B uttons—Usethesetochangetheorderof
section curves in the list. S elect a curve in the list,
and then use the arrows to move the selection up
or down.