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Selection Rollout (Edit Poly Modifier) 649
TheEdgeandBordersub-objectlevelsare
compatible, so if you go from one to the other, any
existing selection is retained.
Polygon—Accesses the Polygon sub-object
level, which lets you select polygons beneath the
cursor. Region selection selects multiple polygons
within the region.
Element—Turns on Element sub-object level,
which lets you select all contiguous polygons in an
object. Region selection lets you select multiple
elements.
The Polygon and Element sub-object levels are
compatible, so if you go from one to the other, any
existing selection is retained.
Use Stack Selection—When on, Edit Poly
automatically uses any existing sub-object
selection passed up the stack, and prevents you
from manually changing the selection.
By Vertex—When on, you can select a sub-object
only by selecting a vertex that it uses. When you
click a vertex, all sub-objects that use the selected
vertex are selected.
Ignore Ba ckfaci ng—When on, selection of
sub-objects affects only those facing you. When
off (the default), you can selec t any sub-object(s)
under the mouse cursor, regardless of visibility or
facing.Ifmultiplesub-objectslieunderthecursor,
repeated clicking c ycles through them. Likewise,
w ith Ignore Backfacing off, region selection
includes all sub-objects, regardless of the direction
they face.
Note: ThestateoftheBackfaceCullsettinginthe
Display panel does not affect sub-object select ion.
Thus, if Ignore Backfacing is off, you can still select
sub-objects, even if you can’t see them.
By Angle—When on, if you select a polygon,
the software also selects neighboring polygons
basedontheanglesettingtotherightofthe
check box. This value determines the maximum
angle between neighboring polygons that will be
selected. Available only at the Polygon sub-object
level.
For example, if you click a side of a box and the
angle value is less than 90.0, only that side is
selected, because all sides are at 90-degree angles to
each other. But if the angle value is 90.0 or greater,
all sides of the box are selected. This funct ion
speeds up selection of cont i g uous areas made up
of polygons at similar angles to one another. You
can select coplanar polygons with a single click at
any ang le value.
Shrink—Reduces the sub-object selection area
by unselecting the outermost sub-objects. If
the s election size can no longer be reduced, the
remaining sub-objects are unselected.
Grow—Expands the selection area outward in all
available directions.
Forthisfunction,aborderisconsideredtobean
edge selection.
With Shrink and Grow, you can add or remove neighboring
elements from the edges of your current sele ction. This works
at any s ub-object level.
Ring—Expandsanedgeselectionbyselectingall
edges p ara l lel to the selected edges. Ring applies
only to edge and border selections.
Ring selection adds to the selection all the edges parallel to
the ones selected originally.