Grid / Bounds plotting incorrectly for parallel projection

[giiyms]

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

Hello,

When plotting with parallel projection turned on the grid/bounds are always plotting in front of the mesh.

If you run the code below and toggle the ruler on you can see the example screenshot.

Steps to reproduce the bug.

import pyvista as pv
pv.set_jupyter_backend('trame')  
sp = pv.Sphere()
sp.points[:,-1] *= 2

pl = pv.Plotter(shape=(1,2))
pl.enable_parallel_projection()
pl.add_mesh(sp)
pl.subplot(0,1)
pl.add_mesh(pv.Cone())
pl.link_views()
pl.show()

System Information

--------------------------------------------------------------------------------
  Date: Thu Feb 09 16:51:21 2023 GMT Standard Time

                OS : Windows
            CPU(s) : 20
           Machine : AMD64
      Architecture : 64bit
               RAM : 31.7 GiB
       Environment : Python
        GPU Vendor : Intel
      GPU Renderer : Intel(R) Iris(R) Xe Graphics
       GPU Version : 4.5.0 - Build 31.0.101.3959

  Python 3.10.9 | packaged by conda-forge | (main, Feb  2 2023, 20:14:58) [MSC
  v.1929 64 bit (AMD64)]

           pyvista : 0.39.dev0
               vtk : 9.2.5
             numpy : 1.23.5
           imageio : 2.25.0
            scooby : 0.7.1
             pooch : v1.6.0
        matplotlib : 3.6.3
           IPython : 8.9.0
             scipy : 1.10.0
              tqdm : 4.64.1
             trame : 2.3.0
      trame_client : 2.4.0
      trame_server : 2.9.0
         trame_vtk : 2.0.14

  Intel(R) oneAPI Math Kernel Library Version 2022.1-Product Build 20220311
  for Intel(R) 64 architecture applications

Screenshots

[banesullivan]

I'm actually not seeing this issue. It's possible there is a graphics difference on Windows...

[giiyms]

Interesting, especially considering with parallel projection turned off this doesn't happen on Windows.

[banesullivan]

Odd. I cannot reproduce this even on my Windows computer

[giiyms]

oh really. How weird.
Any tips on how I could debug this?

It works as expected if I have server rendering on.
Client rendering does not work and has the lines in front of the mesh.

[banesullivan]

Ohhh, I thought the screenshot above looked like server-rendering to me so I didn't try this with client-rendering.

Indeed, I can reproduce:

To me, this looks like the "Fly Mode" of the vtkCubeAxesActor is incorrectly set. @giiyms, can you open an issue with VTK.js: https://github.com/Kitware/vtk-js/issues/new/choose

[giiyms]

@banesullivan is it a VTK.js issue or a trame issue? I thought trame was meant to be the next iteration of VTK.js

[banesullivan]

is it a VTK.js issue or a trame issue?

This is a VTK.js issue

I thought trame was meant to be the next iteration of VTK.js

Trame is not the next iteration of VTK.js but rather, trame is a framework for creating web applications in Python that can utilize VTK.js