Creates a dynamic spline preview jig.
Active editor view.
Accepted points before the dynamic cursor point.
Current method/degree/knots settings.
Closed flag used for preview behavior.
Gets transient spline entity used by this jig.
End the jig and clear any transient preview state.
Should be called when the user finalizes input (mouse click or Enter) to prevent further updates and allow garbage collection.
Render the preview entity through the associated view.
Equivalent to AutoCAD’s worldDraw() — called after each update(value).
Rebuilds preview spline by combining fixed points with cursor point.
Current cursor/input point.
Dynamic preview jig for SPLINE command.
Reuses a transient spline entity and rebuilds it on each cursor move.