9

Edit Geometry Rollout (Mesh) 1011
default, and must be specified separately from any
mater ial names.
Clear S electi on—When on, choosing a new ID or
material name deselects any previously selected
sub-objects. When off, selections are cumulative,
so new ID or sub-material name selections add to
the existing selection set of patches or elements.
Default=on.
Smoothing Groups group
Use these controls to assign selec ted faces to
different smoothing groups (page 3–1013),andto
select faces by smoothing group.
To assign faces to one or more smoothing groups,
select the faces, and then click t he number(s) of
the smoothing group(s) to assign them to.
Select by SG (S moothing Group)—Displays a dia log
that shows the current smoothing groups. Select
a group by clicking the corresponding numbered
button and clicking OK. If Clear Selection is on,
any previously selected faces are first deselected. If
Clear Select ion is off, the new selection is added to
any previous selection set.
Cle ar Al l—Removesanysmoothinggroup
assignments from selected faces.
Auto Smooth—Sets the smoothing groups based
on the angle between faces. Any two adjacent
faceswillbeputinthesamesmoothinggroupif
theanglebetweentheirnormalsislessthanthe
threshold angle, set by the spinner to the right of
this button.
Threshold—This spinner (to the right of Auto
Smooth) lets you specify the maximum angle
between the normals of adjacent faces that
determines whether those faces will b e put in the
same smoothing group.
Edit Vertex Colors group
Use t hese controls to assign the color, illumination
color (shading), and alpha (t ransparenc y) values
of vertices on the selected face(s).
Co lor—Click the color swatch to change the color
of vertices on t he selected face(s). Assig ning vertex
colors at the face level prevents blending across the
face(s).
Illumination—Click the color swatch to change
the illumination color of vertices on the selected
face(s). This lets you change the i l lumination
without changing the vertex’s color.
Alpha—Lets you assig n an alpha (transparency)
value to vertices on the selected face(s).
The spinner value is a percentage; zero is
completely transparent and 100 is completely
opaque.
Edi t Geomet r y R oll out (M esh)
Select a n editable mesh ob j ect. > Modify p ane l >
Selectio n rollout > C hoose any sub-object level.
Selec t an editable mesh obje ct. > Modify panel > Modifier
Stack display > Expand Editable Mesh. > Choose any
sub-object level.
Selec t an ed itab le me sh obje ct. > Quad menu > Tools 1
quadrant > Choose any sub-object level.
The Edit Geometry rollout for Meshes contains
most of the controls that let you alter the geometry
of the mesh, at either the Object (top) level, or
one of the sub-object levels. The controls that the
rollout displays can vary, dependi ng on which l evel
is active; if a control is not available for the active
level, it mig ht be g rayed out, or simply might not
appear at all. The descriptions below indicate the
levels at which controls are available.