Add support for vtkCornerAnnotations

[xavArtley]

plotter = pv.Plotter(shape=(2, 2))

plotter.subplot(0, 0)
plotter.add_text("Render Window 0", font_size=30, position="upper_edge")
plotter.add_text("Upper_Left", font_size=20, position="upper_left", color=(1,1,1))
plotter.add_text("Upper_Right", font_size=20, position="upper_right", color="green")
plotter.add_text("Lower_Left", font_size=20, position="lower_left", color="blue")
plotter.add_text("Lower_Right", font_size=20, position="lower_right", color="red")
plotter.add_mesh(examples.load_globe())

plotter.subplot(0, 1)
plotter.add_text("Upper_Edge", font_size=20, position="upper_edge")
plotter.add_text("Lower_Edge", font_size=20, position="lower_edge", font="courier")
plotter.add_text("Left_Edge", font_size=20, position="left_edge", font="times")
plotter.add_text("Right_Edge", font_size=20, position="right_edge", color=(0.9,0.9,0.5))
plotter.add_mesh(pv.Cube(), show_edges=True, color="tan")

plotter.subplot(1, 0)
plotter.add_text("Render Window 2", font_size=30, position="upper_edge")
sphere = pv.Sphere()
plotter.add_mesh(sphere, scalars=sphere.points[:, 2])
plotter.add_axes(interactive=True)

plotter.subplot(1, 1)
plotter.add_text("Render Window 3", font_size=30, position="left_edge")
plotter.add_mesh(pv.Cone(), color="g", show_edges=True)

# Display the window
pn.panel(plotter.ren_win, sizing_mode="stretch_both", height=400)

[codecov]

Codecov Report

Merging #2257 (9e40ce5) into master (dec61e4) will decrease coverage by 0.02%.
The diff coverage is 75.67%.

@@            Coverage Diff             @@
##           master    #2257      +/-   ##
==========================================
- Coverage   83.64%   83.61%   -0.03%     
==========================================
  Files         183      183              
  Lines       21894    21928      +34     
==========================================
+ Hits        18313    18336      +23     
- Misses       3581     3592      +11     

Impacted Files	Coverage Δ
panel/pane/vtk/synchronizable_serializer.py	77.32% <43.75%> (-0.87%)	⬇️
panel/models/vtk.py	98.48% <100.00%> (+0.02%)	⬆️
panel/pane/vtk/enums.py	100.00% <100.00%> (ø)
panel/pane/vtk/vtk.py	96.38% <100.00%> (-0.01%)	⬇️
panel/param.py	87.81% <0.00%> (-0.30%)	⬇️
panel/widgets/tables.py	84.07% <0.00%> (-0.19%)	⬇️
panel/pane/plotly.py	91.42% <0.00%> (+0.89%)	⬆️

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[philippjfr]

Ready to merge?

[xavArtley]

Yes