8

MeshSmooth Modifier 719
(like the quads ma king up a b ox or the cap on a
cylinder)asasingleface.
Keep Faces Convex—(Available only with Operate
On Polygons mode.) Keeps all input polygons
convex. Selecting this option causes non-convex
polygons to be handled as a minimum number of
separate faces, each of which is convex. (Turn on
Display/Weighting group > Display Control Mesh
to see what’s happening here.)
"Convex" means that you can connect an y two
points in the polygon with a line that doesn’t go
outside the polygon. Most letters aren’t convex.
In the capital letter "T," for example, you can’t
connect the upper-left corner to the bottom with
a straight line without going outside the shape.
Circles, rectangles, and regular polygons are all
convex.
Problems that can occur with non-convex faces
include the fact that changes in the geometry of the
input object can result in a different topology for
the MeshSmooth result. For instance, in a box, if
youdragoneofthetopcornersacrossthemiddle
of the top face, the box becomes non-convex.
MeshSmooth would then see this as two tr i angles
instead of one quad, and the number of points in
the result would change.
If you need to make sure your output topology is
stable, turn this off. If you have a lot of letters or
other non-convex faces in your mesh, however,
you ’ll probably want it on.
Settings rollout > Update Options group
Setsmanualorrender-timeupdateoptions,for
situations where t he complexity of the smo othed
object is too high for automatic updates. Note that
you can also set a greater degree of smoothing to
be applied only at render t ime, on the Subdiv ision
Amount rollout.
Always—Updates the object automatically
whenever you change any MeshSmooth settings.
When R ender ing—Updates the v iewport display of
theobjectonlyatrendertime.
Manually—Turns on manual up dating . When
manual updating is selected, any settings you
changedon’ttakeeffectuntilyouclicktheUpdate
button.
Update—Updates the object in the viewport to
match t he current MeshSmooth settings. Works
only when you choose When Rendering or
Manually.
Resets rollout
This rollout allows you to go back to default or
initial settings on any changes you made such
as sub-object transforms (geometric edits), and
changes to edge creases, vertex weights, and edge
weights.
You can reset changes for all control levels or to
the current control level. Turn on the reset option
for the sub-object level you want, and then click
theappropriatebutton.
Reset All Levels—Returns to the default or initial
settings for geometric edits, creases, and weights
for all sub-object levels.
Res et Thi s Lev el—Returns to the default or initial
settings for geometric edits, creases, and weights
forthecurrentsub-objectlevel.