2012

 CVSHOW
 CVHIDE
For more information, see
Create Solids and Surfaces from Lines and Curves
(page 361).
Create Associative Surfaces
Surfaces can be associative while solids cannot. If surface associativity is on
when a surface is created, it maintains a relationship with the curve from
which it is was generated (even if the curve is the subobject of another solid
or surface). If the curve is reshaped, the surface profile automatically updates.
See
Create Associative Surfaces (page 405).
NOTE
To modify a surface that is associative, you must modify the generating curve
and not the surface itself. If you reshape the surface, its link to the generating
curve will be broken and the surface will lose associativity and become a
generic surface.
Deleting the Curves that Generate the Solid or Surface
The DELOBJ system variable controls whether the curves that generate an
object are automatically deleted after the solid or surface is created. However,
if surface associativity is on, the DELOBJ setting is ignored and the generating
curves are not deleted.
See also:
Create a Solid or Surface by Extruding (page 364)
Create a Solid or Surface by Sweeping (page 367)
Create a Solid or Surface by Lofting (page 369)
Create a Solid or Surface by Revolving (page 372)
Create a Solid or Surface by Extruding
Create a 3D solid or surface by stretching curves into 3D space.
The EXTRUDE command creates a solid or surface that extends the shape of
a curve. Open curves create surfaces and closed curves create solids or surfaces.
See
Overview of Creating Solids and Surfaces (page 361).
364 | Chapter 8 Work with 3D Models