9

Pick Shape Dialog 857
separate splines contained in one shape object.
So a figure X (separate, intersecting splines) will
be properly intersected, but a figure 8 (a single,
self-intersecting spline) will not.
Gen. Ma pping Coords—Applies mapping
coordinates to the extruded object. Default=off.
Real-World Map Size—Controls the scaling method
used for texture mapped materials that are applied
totheobject. Thescalingvaluesarecontrolled
by the Use Real-World Scale settings found in
the applied material’s Coor dinates rollout (page
2–1625).Default=on.
Generate Ma pping IDs—Assigns different material
IDstothesidesandthecapsofthesweep.
Specifically, if both Use Section IDs and Use Path
IDs are both turned off the sides receive ID 3, the
front cap receives ID 1, and the rear cap receives
ID 2. Default=on.
Use S ection IDs—Uses the material ID values
assigned to segments of the section t hat is swept
along the underlying spline (page 1–266) or
NURBS (page 1–1078) curve. Default=on.
By applying an Edit Spline modifier (page 1–680)
to a Custom Section, different material IDs can
be assigned to each seg ment that makes up the
section.
Note: Built-in sections do not benefit from the Use
Section IDs switch.
Use Path I Ds—Uses the material ID values assigned
to segments of the underlying spline or curve
sub-objects in the underlying curve.
By applyi ng a n Edit Spline modifier to the
underlying spline, each segment can be a ssigned
its own material ID.
Note: Use Section IDs and Use Path IDs does not
control the material IDs of the front and rear caps
of the sweep .
Left: Materials set by path IDs
Right: Materials set by section IDs
Rear: Section and Path IDs turned off
Pick Shape Dialog
Select a shape that already has a Sweep modifier applied.
> Mo d ify Panel > Section Type rollout > Turn o n Use
Custom Section > Click Pick Shape.
The Pick Shape dialog is displayed when you select
a custom shape in the scene. This shape can be any
of the splines, extended splines or NURBS curves.
Procedure
To pick a custom section using the Pick Shape dia log:
1.
In the v iewport, pick a shape you w ant to use as
the underlying path of the sweep.
2. From the Modifiers menu, open the
Patch/Spline Editing menu and choose Sweep.
3. OntheModifypanel,turnonUseCustom
SectionintheSectionTypesrollout.
4. Click the Pick Shape button.
The Pick Shape dialog is displayed.
5. Select a shape in the list and click the Pick
button.