Spline

When creating splines using fit points, the resulting curve goes through the specified points and depends on intervals between mathematic knots of curve.

When creating splines using control vertices, temporary lines are displayed between the specified points, they form control polygon that defines the spline form.

Method

Selects the method of creation [Fit/Control]

Object

Converts a polyline, smoothed by the Spline and Smooth commands, to an equivalent spline.

Close

Closes a spline.

Fit tolerance

The maximum distance from a spline curve to any points defining it.

Undo

Successively reverses the specified points. It is impossible to undo the specified start point.

Current settings:

Method=Fit

Specify first point or [Method/Object]:

Specify a start point 1.

Specify second point:

Specify second point 2.

Specify next point [Fit tolerance/Undo] <start tangent>

Specify 3, 4, 5 etc. points.

Specify next point or [Close/Fit tolerance/Undo] <start tangent>

Press ENTER to finish specifying points.

Specify start tangent:

Specify a tangent 6 for the start spline point.

Specify end tangent:

Specify a tangent 7 for the end spline point.

Current settings: Method=Cv

Specify first point or [Method/Object]:

Specify the spline start point.

Specify second point:

Specify the second point.

Specify next point or [Undo]:

Specify the next point.

Specify next point or [Close/Undo]:

Specify all next points. Press ENTER to close the command.

Specify first point or [Method/Object]: Object

Select the Object option.

Select objects to convert to splines or [?]:

Select objects.

Press ENTER to complete the command.