9

Selection Rollout (Editable Patch) 973
YoucanuseCopyandPastetocopysub-object
selections between different objects.
Filter group
These two check boxes, available only at the Vertex
sub-object level, let you select and transform
vertices, vectors (handles on the vertices), or b oth.
When a check box is turned off, you can’t select the
corresponding element t ype. Thus, for example, if
youturnoffVertices,youcanmanipulatevectors
without accidentally moving a vertex.
Tip: Foreasiereditingofvectorsonly,usethe
Handle sub-object level (page 1–979).
Yo u c a n’ t t u r n o f f b o t h c h e c k b ox e s . W h e n y o u
turn off either check b ox, the other one becomes
unavailable. At that point, you can ma n ipulate the
element corresponding to the check box that’s on,
butyoucan’tturnitoff.
Vertices—When on, you can select and move
vertices.
Vectors—When on, you can select and move
vectors.
Lock H a nd le s—Affects only Corner vertices. Locks
the tangent vectors together so that when you
move one, you mo v e them all. Available only at the
Vertex sub-object level.
By Vertex—When you click a vertex, any handle s,
edges, or patches that use that vertex, depending
on the current sub-object level, are selected.
Available only at the Handle, Edge, and Patch
sub-object levels.
This also works with Region Select.
Ignore Ba ckfaci ng—When on, selection of
sub-objects selec ts only those sub-objects whose
normals are vi sible in the view port. When off
(the default), selection includes all sub-objects,
regardless of the direction of their normals. Use
this on a complex patch model where you want to
select only visible patches.
Note: ThestateoftheBackfaceCullsettinginthe
Display panel does not affect sub-object selection.
Thus, if Ignore Backfacing is off, you can still select
sub-objects, even if you can’t see them.
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. Unavailable
at the Handle sub-object level.
Grow—Expands the selection area outward in all
available d irections. Unavailable at the Handle
sub-object level.
Ring—Expandsanedgeselectionbyselectingall
edges paral lel to the selected edges. Available only
attheEdgesub-objectlevel.
Loop—Expands the selection as far as possible, in
alignment with selected edges. Available only at
theEdgesub-objectlevel.
Select Open Edges—Selectsalledgesthatareused
by only one patch. Available only at the Edge
sub-object level.
You can use this to troubleshoot a surface; open
edges will be highlighted.
Selection Information—At the bottom of
the Selection rollout is a text display giving
information about the current selection. If
multiple sub-objects are selected, or none is
selected, the text gives the number and type
selected. If one sub-object is selected, the text gives
the identification number and type of the selected
item.