8

698 Chapter 8: Modifiers
Adaptive Subdivision Dialog
Select an object. > Modify panel > Modifier List >
Object-Space Modifiers > HSDS Modifier > HSDS
Parameters rollout > Adaptive Subdivision button
Select an object. > Modifiers m enu > Subdivision Sur faces
> HSDS Modifier > 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 1–693)
. Alternatively, you can use adaptive
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 Detail or Remove Detail,
depending which operation you want to
perform.
3. Setthedesiredamountofdetailwithoneofthe
presets or by specifying custom Leng th and
Angle settings.
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.
Interf ace
Detail group
Add/Remove—Determines whether clicking the
OK button increases or decreases detail.
Parameters grou p
These settings determine the extent to which
detail is added or removed. The Length and Angle
settings are available for edit ing only when the
Custom option is chosen. However, t hey show the
default settings for the Low, Medium, and High
options.
Low/M edi um/High /Cu s tom—Choose one of the
presets, or choose Custom to set your own Length
and A ng le values.
Max. LOD—Specifies the highest number of levels
of detail that the software can add when i ncreasing
detail. Not available when removing detail.
Lengt h—The maximum perm issible length of any
edge after adding or removing detail. The smaller
the length, the higher the amount of tessellation
that is allowed.
Angle—The maximum permissible angle between
two opposite edges em a nating from a ver tex.
The smaller the angle, the higher the amount of
tessellation that is allowed.