Update glvis-js v0.4 -> v0.5

[justinlaughlin]

Updating to glvis-js v0.5

-  mfem: "v4.8",
-  glvis: "v4.4",
+  mfem: "v4.9",
+  glvis: "v4.5",

[najlkin]

Are all (new) keys supported? 🤔

[najlkin]

Also there are more examples now.

[najlkin]

TODO:

• Update data submodule
• Add examples to src/live/index.html
• fix resolution
• fix example 22 - vector

Optional:

• Add buttons for new(ish) features, but as they are context-dependent, it cannot be statically in HTML, but dynamically enabled/added by JS perhaps? 🤔

[najlkin]

I have updated data and added (hopefully) all missing examples, but I have noticed some bugs:

• The new support for all commands is nice, but changes of window size cause some blurring do to rescaling, which is carried over to other examples. Possible solutions:
  • Filter out that command
  • Reset size after loading a different example
  • Remove the command from the streams (the only bad guys are distance.saved, shifted.saved and ex6-dofs-numbering.saved)
  • Remove the examples
• Loading example 22 (vector) gives different results sometimes, not clear what is happening

[najlkin]

Ok, I fixed the resolution problem, so all examples can be loaded 👍 .
That example 22 - vector depends on timing, sometimes U key is ignored 😬 . That is a bug in GLVis itself and has nothing (directly) to do with glvis-js or complex functions visualization. It is just the only example, which uses U key. Anyway, I would leave it for now and proceed. We will just know one of the examples is a bit funky 🤪 .

[najlkin]

Ok, I think it is pretty clear what is happening for U, it uses static variables, which are initialized only once, which is fine for native GLVis, but the web live version generates new instances of visualization scenes, which do not reinit these static variables. We should really get rid of these 🤢 . I will open a PR in GLVis, but we may merge this independently.

[najlkin]

Fixed example 22 - vector in GLVis/glvis#366 🚀 .