Deprecation issues with pyvista

[CesarRodriguezPereira]

While fooling around with the functions plot_nodal_solution() and animate_nodal_solution() I've gotten some small issues due to changes in pyvista:

With plot_nodal_solution() it raises an error due to the use of stitle as a keyword, instead of the suggested use of '''scalar_bar_args={'title': 'Scalar Bar Title'}'''. This is just a warning, so the function works and plots correctly.

With animate_nodal_solution() it raises a DeprecationError due to the use of use_ipyvtk instead of the ipyvtklink backend. The animation doesn't render.

From what I've gathered looking into the code, the first issue is present in various functions, while the second appears only in _plot_point_scalars() (which I was taking a look in order to add a return_plotter keyword), but I'm not comfortable enough yet with pyvista to fix and PR myself

[akaszynski]

For the moment, keep with pyvista==0.29.1 until I can implement the fixes.

[natter1]

which I was taking a look in order to add a return_plotter keyword

I guess there are larger changes to be expcted for plotting, but if you want a short-term fix in your own environment, I think you only need to add it to general_plotter() - all other plot functions use kwargs which are transfered to this function (hope I remember correctly - I implemented a plotter-parameter, which was slightly more complicated)

[CesarRodriguezPereira]

which I was taking a look in order to add a return_plotter keyword

I guess there are larger changes to be expcted for plotting, but if you want a short-term fix in your own environment, I think you only need to add it to general_plotter() - all other plot functions use kwargs which are transfered to this function (hope I remember correctly - I implemented a plotter-parameter, which was slightly more complicated)

The general plotter is used for the core library plots, but the function I modified were contained withing the reader. _plot_point_scalars() seemed to be the master function, at least for the ones I needed, so I added it as a kwarg there, within my own env.

[akaszynski]

Fixed in #29. Theme based changes will be pushed when updating to pyvista==0.30.2.

Since this is a critical bug with the latest pyvista, I've gone ahead and released a patch as ansys-mapdl-reader==0.50.12