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Create a polygon face with a hole
Polygon creation
Extrude polygons in an arc or wedge shape
Extrude a polygon face, edge, or vertex
You
can add polygons to an existing mesh using the Extrude feature
(
Edit Mesh > Extrude).
You can extrude polygon faces, edges, or vertices using the feature.
For example, when you extrude a face on a polygon mesh the existing
face telescopes inwards or outwards as it creates new connecting
faces on the sides of the extrusion.
NoteThe Extrude options
window is context sensitive. That is, when you display the Extrude options
window, only the options for the currently selected components (faces,
edges, or vertices) are displayed in the window.
To extrude polygon faces or
edges
- Select
the faces or edges you want to extrude.
- Select
Edit Mesh > Extrude
The action creates an extrude node and switches
to the Show Manipulator Tool.
- Do
any of the following:
- Use
the manipulator to control the direction and distance of the extrusion.
Remember that you can also change the pivot by pressing Insert or Home.
Click the circle handle attached to the manipulator to switch between
local and world axes.
NoteThe Show Manipulator Tool only
appears when Construction History is on.
- Use
the controls in the Attribute Editor or Channel
Box to edit the extrusion. See
Edit Mesh > Extrude.
TipYou can scale and rotate the extrusion along
its length to create interesting forms.
NoteExtruding edges can make your mesh non-manifold.
Use
Mesh > Cleanup to
fix non-manifold geometry.
To extrude
edges or faces along a path curve
- Select
the edges/or faces you want to extrude and the curve you want to extrude
along.
- Select
Edit Mesh > Extrude > .
- Turn
on the Use selected curve for extrusion option.
- Click Extrude.
- Use
the controls in the Attribute Editor or Channel
Box to edit the extrusion. See
Edit Mesh > Extrude.
For example, increase Divisions so
the extruded polygons better match the shape of the curve.
Reduce Taper so the extruded
polygons gradually become narrower along the curve. (You can also
use the Taper Curve controls to create
more complex tapers.)
Adjust Twist so
the extruded polygons rotate along the curve.
Vertices extrude along its vertex normal, creating
additional faces for each face that shares the vertex.
To extrude a vertex
- Select
the vertex you want to extrude.
- Select
Edit Mesh > Extrude > .
- Set
the Length setting to extrude the
vertex and click Extrude.
Keeping faces together when extruding
The Keep
Faces Together option (
Edit Mesh > Keep Faces Together)
controls how Extrude treats the edges of
adjacent faces. When Keep Faces Together is on,
the faces expand so their edges stay connected. When Keep
Faces Together is off, Maya creates new polygons along
the edges of the faces as they extrude.
NoteWhen Keep Faces Together is
off, each face becomes a separate mesh.