vtkColorTransferFunction::SetNodeValue() doesn't refresh function range
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
vtkColorTransferFunction::SetNodeValue() doesn't update the current range. The new X of the control point can be outside of the current range, however the range is not updated. Solutions: +vtkColorTransferFunction::SetNodeValue() can call SortAndUpdateRange() +Expose vtkColorTransferFunction::MovePoint() (it updates correctly the range) to the public API. If the user knows he just want to move the point, then he can call MovePoint() instead.