8

874 Chapter 8: Modifiers
Selec tion Parameters rollout
Use these settings to make or modify a sub-object
select ion for use by the modifier. If you’ve passed
afaceselectionupthestack,forexamplefrom
thePolySelectmodifier,UnwrapUVWusesthat
instead, and m a kes these controls u navailable.
+ button—Expands the selection by selecting all
faces adjacent to selected faces.
- button—Reduces the selection by deselecting all
faces adjacent to non-selected faces.
Ring—Expands an edge select ion by selecting
all edges para llel to the selected edges. R ing applies
only to edge selections.
Loop—Expands the selection as far as possible,
in a lignment with selected edges. Loop applies
only to edge selections, and propagates only
through junctions of even numbers of edges.
Igno re Backfacin g—When region selecting,
prevents the selection of faces not visible in the
viewport.
Select By Element—Lets you select elements (page
3–1027)
.
Planar Angle—Lets you select contiguous coplanar
faces with one click. Turn this on, and then set the
threshold ang le value that determines which faces
are coplanar. Then click a face to select it and all
contiguous faces whose angles are less than the
threshold value.
Planar Angle is available only at the Face
sub-object level.
Select MatID—Enables face selection by material
ID (page 3–1063)
.SpecifythematerialIDto
select, and then click Select MatID.
Select MatID is available only at the Face
sub-object level.
Select SG—Enables face selection by smoothing
group (page 3–1107)
.Specifythesmoothing
group to select, and then click Select SG.
Select SG is available only at the Face sub-object
level.
Parameters rollout
Edit—Displays the Edit UVWs dialog (page
1–878)
.