9

706 Chapter 8: Modifiers
Mater ial ID—
Displays the material ID assigned to
the current selec tion. Available only in Polygon
and E lement sub-object mo des. If multiple
sub-objects are selected and they don’t share an
ID, this field is blank.
You can change the material ID assigned to
selected sub-objects at the current and higher
levels of detail by changing this setting.
Material IDs are used primarily w ith
Multi/Sub-Object material (page 2–1594).
Hide—Hides the current polygon selection.
Available only at the Polygon and Element
sub-object levels. Use Unhide All to reveal hidden
polygons.
Tip: UseHidetoisolatepartofanobjectyouwant
to work on. The Select Invert command on the
Edit menu is useful in this case. Select the faces
youwanttofocuson,chooseEdit>SelectInvert,
then click the Hide button.
Unhide All —Reveals hidden polygons.
Delete Polygon—Deletes the current polygon
selection, creating a hole or holes in the surface.
Available only in Polygon sub-object mode.
Note: When the current le vel of detail does not
encompass the entire object surface, you cannot
delete polygo ns at the border of the control grid;
that is, polygons that do not share all edges with
other polygons in the grid.
Adaptive Subdivision—Opens the Adaptive
Subdivision dialog (page 1–706).Thisoptionis
best used for smoothing subdivided and edited
portions of the mesh when you’re finished using
the HSDS functionality.
Soft Sele ction rollout
These cont rols let you set a gradual falloff of
influence b etween selected and unselected vertices.
See Soft Selection Rollout (Edit/Editable Mesh)
(page 1–963).
Adaptive Subdivision Dialog
Select an object. > Modify panel > Modifier List >
Object-Space Modifier s > HSDS Modifier > HSDS
Parameters rollout > Adaptive Subdivision button
Select an object. > Modifiers menu > Subdivision Surfaces
> HSDS Modifie r > HSDS Parameters rollout > Adaptive
Subdivision button
Use adaptive subdivision for smoothing
subdivided and edited portions of the mesh
when you’re finished using the HSDS modifier
(page 1–701).Alternatively,youcanuseadaptive
subdivision to remove a level of detail from the
object.
Procedure
To use adaptive subdivision:
1.
Edit an object with the HSDS modifier.
2. Choose Add Detai l or Remove Detail,
depending which operation you want to
perform.
3. Setthedesiredamountofdetailwithoneofthe
presets or by specifying custom Length and
Angle sett ings.
4. Click OK to perform the specified operation.
The detail addition or removal is performed,
andyou’rereturnedtotheHSDSmodifier.
Depending on whether you removed or added
detail, the highest level of detail is decremented
or incremented by 1.