Pyvista subplot with VRML

[SimonRit]

Describe the bug, what's wrong, and what you expected.

I am trying to use Pyvista to plot two VRML files next to each other using Pyvista’s subplot. However, the two files are overlaid on each other in the first subplot, as shown with the teapot and sextant files.

Steps to reproduce the bug.

import pyvista as pv
from pyvista import examples

pl = pv.Plotter(shape=(1, 2))
sextant_file = examples.vrml.download_sextant()
pl.import_vrml(sextant_file)
pl.subplot(0, 1)
teapot_file = examples.vrml.download_teapot()
pl.import_vrml(teapot_file)
pl.show()

System Information

--------------------------------------------------------------------------------
  Date: Tue May 30 18:08:50 2023 CEST

                OS : Linux
            CPU(s) : 12
           Machine : x86_64
      Architecture : 64bit
       Environment : IPython
        GPU Vendor : Intel Open Source Technology Center
      GPU Renderer : Mesa DRI Intel(R) HD Graphics (Coffeelake 3x8 GT2)
       GPU Version : 4.6 (Core Profile) Mesa 19.3.4
  MathText Support : False

  Python 3.8.8 (default, Apr 13 2021, 19:58:26)  [GCC 7.3.0]

           pyvista : 0.39.1
               vtk : 9.2.6
             numpy : 1.20.1
        matplotlib : 3.4.1
            scooby : 0.7.2
             pooch : v1.7.0
           imageio : 2.9.0
           IPython : 7.23.1
          colorcet : 1.0.0
        ipywidgets : 7.6.3
             scipy : 1.6.3
              tqdm : 4.61.0
            meshio : 5.3.4
             trame : 2.5.0
      trame_client : 2.8.0
      trame_server : 2.11.2
         trame_vtk : 2.4.4
      nest_asyncio : 1.5.1
--------------------------------------------------------------------------------

Screenshots

[banesullivan]

It looks like there is a missing feature in vtkVRMLImporter that is preventing us from using anything but the first renderer on the render window.

pyvista/pyvista/plotting/plotting.py

Line 479 in f38c093

importer.SetRenderWindow(self.render_window)

[banesullivan]

I think we have the same issue with most/all "import_*" methods on the Plotter