2012

Table Of Contents
CVHIDE
Turns off the display of control vertices for all NURBS surfaces and curves.
CVSHOW
Displays the control vertices for specified NURBS surfaces or curves.
PEDIT
Edits polylines and 3D polygon meshes.
PLINE
Creates a 2D polyline, a single object that is composed of line and arc
segments.
SPLINE
Creates a smooth curve that passes through or near a set of fit points, or that
is defined by the vertices in a control frame.
SPLINEDIT
Modifies the parameters of a spline or converts a spline-fit polyline to a
spline.
System Variables
PLINECONVERTMODE
Specifies the fit method used in converting splines to polylines.
SPLPERIODIC
Controls whether closed splines and NURBS surfaces are generated with
periodic properties to maintain the smoothest continuity at the closure point
or seam.
Draw Helixes
A helix is an open 2D or 3D spiral.
You can use a helix as a path with the SWEEP command. For example, you
might sweep a circle along a helix path to create a solid model of a spring.
When you create a helix, you can specify the following:
Base radius
Top radius
728 | Chapter 18 Create Objects