[Paraview] ParaviewWeb 4 - WebGL renderer camera reset and background issue

[Bogdan Daqui Herrera]

Hi Seb,

I have located the file and key where the value should, I assume, be set
on the web deployment: vtkweb-all.js.

The key value combination seem to be in:
DEFAULT_OPTIONS = {
        keepServerInSynch: true
}

which I have set to true. In the web-browser, after deleting the cache,
I can see this is the current key-value combination, however
synchronisation is not completed. I tried placing the key-value in
quotes as well, without any effect.

I am switching the WebGL renderer on with
pv.viewport.setActiveRenderer("webgl");

Should this be enough or I am still missing some configuration values?

The vtkweb.viewport.webgl.js itself is in the ParaView sources under:
src/VTK/Web/JavaScript/Lib/vtkweb.viewport.webgl.js, but its contents is
also in vtkweb-all.js, which is deployed for the web-app as well as in
the different examples.

Kind Regards,
Bogdan


On 02.12.2013 17:56, Sebastien Jourdain wrote:
> Hi Bogdan,
> 
> To fix the issue #1, you just need to add a property at the construction
> of the viewport in order to keep client and server in synch.
> I don't remember the key/value pair but if you look inside the
> xxx.webgl.js, you should find out. 
> Moreover, once the JS documentation get regenerated after the next
> gatekeeper review, this will be well described.
> 
> For the #2, this is definitely a new bug that will need to be addressed.
> 
> Thanks for your feedback,
> 
> Seb
> 
> 
> On Mon, Dec 2, 2013 at 2:51 AM, Bogdan Daqui Herrera <bdaqui at simscale.de
> <mailto:bdaqui at simscale.de>> wrote:
> 
>     Hello all,
> 
>     I have run into a couple of issues while using the WebGL renderer in
>     ParaviewWeb 4. Could you help me out with some pointers or possible
>     workarounds for these problems.
> 
>     1. Camera View being reset
>     The camera orientation and position are always being reset after
>     performing different operations, such as:
>     -Activating/De-activating the scalarbar
>     -Choosing between point/face data for the ColorBy selection
>     -Adding a filter into the current pipeline
>     -Rescaling
>     -advancing to the next file/time-step in the Data Source.
> 
>     2. Background other than black
>     This happens when a background of a different colour, for example a
>     gradient of white and grey is chosen. If I alter the camera position or
>     orientation, this background (which is in this case represented by a
>     rectangle with the selected colours) can move out of the field-of view,
>     it does not stay in a fixed position relative to the camera meaning the
>     black regular background is in most part visible.
> 
>     Both issues happen only when using the WebGL renderer. When switching to
>     the software renderer, the behaviour is as expected.
> 
>     Kind Regards,
>     Bogdan
> 
>     --
>     Bogdan Daqui
>     Software Development
> 
>     SimScale GmbH
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> 
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