Properties Widget: Spline Parameters table should have at least 2 entries
The spline property widget contains a table defining the spline control points. As a spline requires at least 2 points, we should enforce at least 2 entries in the table.
For now, there is a Remove all points
button, that leads to a warning
Generic Warning: In vtkSplineRepresentation.cxx, line 130
vtkSplineRepresentation: there is not any point defined at the moment.
We may prefer a Reset points
that bring backs to the 2 default points.