[Paraview] Paraview Web bug on windows

[Aron Helser]

I can confirm that the bug still exists on Windows with the ParaView 5.4.1
binaries downloaded from paraview.org.

To fix it, you can do a little patch to your installation of ParaView.

In the file
{ParaViewInstallDir}\bin\Lib\site-packages\paraview\web\protocols.py,
around line 1070, add these two lines:

        # Use the vtk data encoder to base-64 encode the image as png,
using no compression
        encoder = vtkDataEncoder()
+        # two calls in a row crash on Windows - bald timing hack to avoid
the crash.
+        time.sleep(0.01);
        b64Str = encoder.EncodeAsBase64Png(imgData, 0)

This should get you going again!
Regards,
Aron

On Tue, Sep 26, 2017 at 11:37 AM, Sebastien Jourdain <
sebastien.jourdain at kitware.com> wrote:

> It was probably not back ported to the release branch of 5.4 when Aron
> fixed it.
>
> On Tue, Sep 26, 2017 at 9:31 AM, Daniel Zuidinga <info at seoaachen.de>
> wrote:
>
>> it works with the nightly build of pv
>>
>>
>> Am 26.09.2017 um 15:23 schrieb Sebastien Jourdain:
>>
>> This might be related to https://github.com/Kitware/visualizer/issues/34
>>
>> On Tue, Sep 26, 2017 at 1:34 AM, Daniel Zuidinga <info at seoaachen.de>
>> wrote:
>>
>>> Hi,
>>>
>>> as soon as I select a dataset to colorize pvpython stops working (see
>>> attached screenshot).
>>>
>>> I use the latest 5.4.1 windows 64bit pv.
>>>
>>> This happens with all example datasets.
>>>
>>> best regards
>>>
>>> --
>>> Daniel Zuidinga
>>> Dipl.-Ing.
>>>
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>>>
>>> Easy to use CAE, Finite Element Analysis in the browser and in the cloud:
>>> https://simulaton.com
>>>
>>>
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>>
>>
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>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
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>>
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>>
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>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at http://www.kitware.com/
> opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/paraview
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>
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