8

Poly Select Modifier 755
selection selects multiple polygons within the
region.
Element—Selects all contiguous polygons in
an object; region selection selects the same.
By Vertex—Selects any sub-objects at the current
level that use a vertex you click. Applies to all
sub-object levels except Vertex. Also works with
Region Select.
Ignore Backfaces—Selecting sub-objects selects
only those whose normals make them visible in the
viewport. When turned off (the default), selection
includes all sub-objects, regardless of the direction
of their normals.
Note: The state of the Display properties (page
1–55)
> B ackface Cull sett ing doesn’t affect
sub-object selection. Thus, if Ignore Backf acing is
turned off, you can select sub-objects even if you
can’t see them.
Note: The state of the Ignore Backfaces check box
also affects edge select ion at the Edge sub-object
select ion level.
Shrink—Reduces the sub-object selection area
by deselecting the outermost sub-objects. If
the s election size can no longer be reduced, the
remaining sub-objects are deselected.
Grow—Expands the selection area outward in all
available directions.
Forthisfunction,aborderisconsideredtobean
edge select ion.
With Shrink and Grow, you can add or remove neighboring
elements from the edges of your current s election. This
works at any sub-object level.
Ring—Expandsanedgeselectionbyselectingall
edges parallel to the selected edges. R ing applies
only to edge and border selections.
Ring selection adds to the selection all the edges that are
parallel to the ones selected original ly.
Loop—Expands the select ion as far as possible, in
alignment with selected edges.
Loop applies only to edge and b order selections,
and propagates only through four-way junctions.