Silhouette not updating when changing camera position about vedo

[RubendeBruin]

Work-around using qt:

Create Plotter
Create Actor
Plotter.show()

create vtkActor with silhouette based on Actor
manually add to plotter.renderer[0]

vtkPlotterOutline.py.txt

[marcomusy]

Hi Ruben
I could only reduce the above code to:

from vtkplotter import *
import vtk

plt = Plotter(bg='lightblue', interactive=False)

a = Cone().alpha(0.2).flat().c('gold').lw(0.1).lc('red')
plt += a
plt.show() 

outline = vtk.vtkPolyDataSilhouette()
outline.SetInputData(a.polydata())
outline.SetCamera(plt.camera)
outlineMapper = vtk.vtkPolyDataMapper()
outlineMapper.SetInputConnection(outline.GetOutputPort())
# outlineMapper.SetInputData(outline.GetOutput()) # <------

actor = Actor()
actor.SetMapper(outlineMapper)
actor.lw(4).c('black')

plt.add(actor) # add() also calls Render()
interactive()

The problem is probably in the commented-out line, in the difference between SetInputConnection vs SetInputData (which is what is done internally in vtkplotter).. I'll think if there is a possible workaround that works in the general case...
Thanks for spotting it!
M