8

1000 Chapter 9: Sur face Modeling
Extruded edges seen in viewpor t and rendered image
Extrude—Click this button and then either drag to
extr ude the selected edge(s), or adjust the Extrude
spinner to perform the extrusion. You can select
different edges to extrude while Extrude is active.
Ex trude Amount—This spinner (to the right of the
Extr ude button) lets you specify the amount to
extrude the edge. Select one or more edges, and
then adjust the spinner.
Chamfer—Clickthisbuttonandthendragedgesin
the act ive object. The Chamfer spinner updates to
indicate the chamfer amount as you drag.
If you drag one or more selected edges, all selected
edges are chamfered identically. If you drag
an unselected edge, any selected edges are first
deselected.
An edge chamfer "chops off " the selected edges,
creating new edges that move along the faces on
either side by <chamfer a m ount>. S ome vertex
chamfering is done at the ends to make this
behavior work with the rest of the mesh. New
chamfer faces are created with the material ID of
one of the neighboring faces (picked at random)
and a smoothing group which is an intersection of
all neig hboring smoothing groups.
Chamf e r Am o u n t—Adjust this spinner (to the rig ht
of the Chamfer button) to apply a chamfer effect
to selected edges.
Nor mal—Determines how a selection of more than
oneedgeisextruded.WithNormalsettoGroup
(the default), extrusion takes place along the
averaged normal of each continuous group (line)
of edges. If you extrude multiples of such groups,
each group moves along its own averaged normal.
If you set Normal to Local, extrusion takes place
along each selected edge’s normal.
Cut a nd Slice group
Lets you subdivide edges with either cut or slice
tools to create new vertices, edges and faces. For
details, see
Cut and Slice (page 1–1010) .
Remove Isola ted V er t ices—Deletes all isolated
vertices in the object regardless of the current
selection.
Select Open Edges—Selectsalledgeswithonly
one face. In most objects, this shows you where
missing faces exist.
Create Sha pe f ro m Edges —After selecting one or
more edges, click this button to create a spline
shape from the selected edges. A Create Shape
dialog appears, letting you name the shape, set it
to Smooth or Linear, and ignore hidden edges.
The new shape’s pivot is placed at the center of the
mesh object.
V iew Align—Aligns selected edges to the plane of
theactiveviewport.Inthecaseoforthographic
viewports, this is the same effect as aligning to
the constr uction grid w hen the home grid is
active. When aligning to a perspective viewport
(including camera and lig ht views), the edges are
reoriented to be alig ned to a plane that is parallel
to the camera’s v iewing plane. (Perspective