8

712 Chapter 8: Modifiers
Mesh Select Parameters rollout
Provides buttons for turning different sub-object
modes on and off, working with named selections
and hand les, display settings, and information
about selected entities.
TheiconsatthetopoftheSelectionrolloutletyou
specify the method of sub-object selection.
Clicking a button here is t he same as selec ting a
sub-object level i n the modifier stack. Click the
button again to turn it off and return to the object
select ion level.
Vertex—Selects a vertex b eneath the cursor;
region selec tion selects vertices within the region.
Edge—Selects a face or polygon edge beneath
the cursor; region selec tion selects multiple edges
within the region.
Face—Selects a triangular face beneath the
cursor; region selection selects multiple triangular
faces within the region.
Poly gon—Selects all coplanar faces (defined
by the v alue in the Planar Threshold spinner)
beneath the cursor. Usually, a polygon is the area
you see within the v isible wire edges. Region
selection selects multiple polygons within the
region.
El ement—Selects all contiguous faces 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 B ackfaces—Selects only those sub-objects
whose normals make them v isible in the viewpor t.
When tur ned off (the default), selection includes
all sub-objects, regardless of the direction of their
normals.
Note: ThestateoftheBackfaceCullsettinginthe
Display panel doesn’t affect sub-object selection.
Thus, if Ignore Backfacing is turned off, you can
select sub-objects even if you can’t see them.
Note: ThestateoftheIgnoreBackfacescheckbox
alsoaffectsedgeselectionattheEdgesub-object
selection level.
Ignore V isible Edges—When turned off (the
default), and you click a face, the selection won’t
go beyond the visible edges no matter what the
setting of the Planar Thresh spinner. When turned
on, face selection ignores the visible edges, using
the Planar Thresh setting as a guide. Enabled when
the Polygon face selection method is chosen.
Generally, if you want to select a "facet" (a coplanar
collection of faces), you set the Planar Threshold
to 1.0. On the other hand, if you’re trying to select