9

Editable Spline 293
Spline steps can be either adaptive or manually
specified. The method used is set by the state of
theAdaptivecheckbox.Themainuseformanual
int erpolation is to create splines for morphing
or other operations where you must hav e exact
control over the number of vertices created.
Optimi ze—When on, removes unneeded steps
from str a ight segments in the spline. Default=on.
Note: Opt imize is not available when Adaptive is
on.
Optimize was used to create spline in this lathed object.
Adaptive—When on, automatically sets the
number of steps for each spline to produce a
smooth curve. Straight seg ments a lways receive
0 steps. When off, enables manual interpolat ion
control using Optimize and Steps. Default=off.
Selec tion rollo ut
Provides controls for turning different sub-object
modes on and off, working with named selections
and handles, display sett ings, and information
about selected entities.
When you first access the Modify panel with
an editable spline selected, you’re at the Object
level, with access to several functions available as
described in Editable Spline (Ob ject) (page 1–295).
You can toggle the sub-object mo des and access
relevant functions by click ing sub-object buttons
at the top of the Selection rollout.
You can work with parts of shapes and splines
using shape sub-object selection of the Editable
Spline object. Clicking a button here is the same
as selecting a sub-object type in the Modifier List.
Click the button again to turn it off and return to
object select ion level.
Vertices—Define points and curve tangents.
Segments—Connect vertices.