[Paraview-developers] LightViz - image resolution and WebGl
Albrecht Kyrieleis
akyrieleis at gmail.com
Fri Apr 13 05:29:00 EDT 2018
Hi,
When I start the LightViz with a different port, e.g. 9090, then it behaves
differently, it's less blurry and there is rotating kit swirls when the
data set is loading. Why is there this difference ?
Thank you
Albrecht
On 12 April 2018 at 22:57, Sebastien Jourdain <
sebastien.jourdain at kitware.com> wrote:
> The expected version is 1.18.1 which definitely explain what you may run
> into such issue.
>
> But with the old version I would have expected the Python script to
> complain about that unknown argument.
> Also the Python is not enough. The Python (server) and the JavaScript
> (client) need to match.
>
> The command line should looks like: (I've added new line for readability)
>
> # the actual patch should be validated to match your system
> PV_WEB=/usr/local/share/ParaView-5.5.0-Qt5-MPI-Linux-64bit/share/web
>
> /usr/local/share/ParaView-5.5.0-Qt5-MPI-Linux-64bit/lib/pvpython -dr
> --force-offscreen-rendering
> $PV_WEB/light-viz/server/pvw-light-viz.py
> --content $PV_WEB/light-viz/www
> --port 8080 --viewport-scale 2 --data data
>
>
>
> On Thu, Apr 12, 2018 at 3:41 PM, Albrecht Kyrieleis <akyrieleis at gmail.com>
> wrote:
>
>> The LightViz versio installed is 1.0.0.
>>
>> I copied pvw-light-viz.py from the ParaView installation to the
>> LightViz installation (replacing the file in dir server), but still no
>> effect.
>>
>> Thanks
>> Albrecht
>>
>>
>>
>> On 12 April 2018 at 20:20, Sebastien Jourdain <
>> sebastien.jourdain at kitware.com> wrote:
>>
>>> I'm seeing that you are using your light-viz (
>>> /usr/lib/node_modules/light-viz/server/pvw-light-viz.py)
>>>
>>> Can you try to use the one that is bundle with ParaView 5.5?
>>> Do you know which version of LightViz you are using with PV5.5?
>>>
>>> On Thu, Apr 12, 2018 at 1:15 PM, Albrecht Kyrieleis <
>>> akyrieleis at gmail.com> wrote:
>>>
>>>> Using ps aux | grep pvpython it seems ok:
>>>>
>>>> albrech+ 17686 10.9 1.6 2151904 269348 pts/3 Sl+ 20:07 0:19
>>>> /usr/local/share/ParaView-5.5.0-Qt5-MPI-Linux-64bit/lib/pvpython -dr
>>>> --force-offscreen-rendering /usr/lib/node_modules/light-viz/server/pvw-light-viz.py
>>>> --content /usr/lib/node_modules/light-viz/dist --port 8080
>>>> --viewport-scale 2 --data data
>>>>
>>>> I have tried to increase the max resolution be passing additional
>>>> arguments in light-viz-cli , but no effect.
>>>>
>>>> Albrecht
>>>>
>>>>
>>>> On 12 April 2018 at 18:51, Sebastien Jourdain <
>>>> sebastien.jourdain at kitware.com> wrote:
>>>>
>>>>> When you run "ps aux | grep pvpython" do you see that argument
>>>>> properly passed?
>>>>>
>>>>> This is where that argument should be used
>>>>> https://github.com/Kitware/light-viz/blob/master/server/pvw-
>>>>> light-viz.py#L183
>>>>>
>>>>> Is the resolution you are trying to use bigger than the default below?
>>>>> https://github.com/Kitware/light-viz/blob/master/server/pvw-
>>>>> light-viz.py#L160-L161
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Apr 12, 2018 at 11:45 AM, Albrecht Kyrieleis <
>>>>> akyrieleis at gmail.com> wrote:
>>>>>
>>>>>> Thank you, Seb
>>>>>>
>>>>>> I've installed the server on Linux, but view the data in using Chrome
>>>>>> browser under Windows7. In light-viz-cli.js I modified :
>>>>>>
>>>>>> const cmdLine = [
>>>>>> quotePath(pvPythonExecs[0]),
>>>>>> '-dr',
>>>>>> '--force-offscreen-rendering',
>>>>>> quotePath(path.normalize(path.join(__dirname,
>>>>>> '../server/pvw-light-viz.py'))),
>>>>>> '--content', quotePath(path.normalize(path.join(__dirname,
>>>>>> '../dist'))),
>>>>>> '--port', program.port,
>>>>>> '--viewport-scale', 2,
>>>>>> ];
>>>>>>
>>>>>> but this dose not seem to have an effect when restarting the server.
>>>>>>
>>>>>> Thank you
>>>>>>
>>>>>> Albrecht
>>>>>>
>>>>>> On 12 April 2018 at 18:08, Sebastien Jourdain <
>>>>>> sebastien.jourdain at kitware.com> wrote:
>>>>>>
>>>>>>> Hi Albrecht,
>>>>>>>
>>>>>>> I'm glad you managed to use LightViz with a local installation.
>>>>>>> Maybe the best place to talk about LightViz would be the Issue tracker on
>>>>>>> Github, but here is fine too (although the paraview-user mailing list might
>>>>>>> be better for the mailing side).
>>>>>>>
>>>>>>> q1) I believe you are on Mac with a retina display. The issue is
>>>>>>> related to the reported size between the browser and what VTK/ParaView
>>>>>>> render. To solve it, you can provide additional argument when running
>>>>>>> light-viz to double the resolution. For that just add "--viewport-scale 2"
>>>>>>> in the generated command line as the JS cli does not have that arg
>>>>>>> built-in. (I guess I forgot to add it like in visualizer
>>>>>>> https://github.com/Kitware/visualizer/blob/master/bin/pvw-vi
>>>>>>> sualizer-cli.js#L40 and https://github.com/Kitware/vis
>>>>>>> ualizer/blob/master/bin/pvw-visualizer-cli.js#L125-L136)
>>>>>>>
>>>>>>> q2) No but Visualizer give you the option to either do "remote
>>>>>>> rendering" or "local rendering" (webgl). It would be possible to extend
>>>>>>> LightViz to switch its renderer like Visualizer is doing.
>>>>>>>
>>>>>>> q3) Are you thinking frustrum selection or just surface? In either
>>>>>>> case, you will need to create a new module. The capability exist within
>>>>>>> ParaView but you will have to wire them between the Web UI and the
>>>>>>> processing that needs to happen on the server side. And if you are not
>>>>>>> familiar with ParaView, that might be a daunting task. But we can help...
>>>>>>>
>>>>>>> Thanks for reaching out,
>>>>>>>
>>>>>>> Seb
>>>>>>>
>>>>>>> On Thu, Apr 12, 2018 at 10:28 AM, Albrecht Kyrieleis <
>>>>>>> akyrieleis at gmail.com> wrote:
>>>>>>>
>>>>>>>> Hi,
>>>>>>>> I have installed LightViz and want to modify it to fit exactly our
>>>>>>>> needs. Not sure whether this mailing-list is the right one.
>>>>>>>>
>>>>>>>> I have installed LightViz and Paraview-5.5(Linux CentOS) and can
>>>>>>>> import a vtk data file using the --add-dataset option. Visualization and
>>>>>>>> function of LightViz is great. But I have three questions:
>>>>>>>>
>>>>>>>> - the dataset looks a bit blurry and the orientation arrows are
>>>>>>>> always quite blurry. How can I fix this ?
>>>>>>>> - Is LightViz actuallly using WebGl ? If not, how can I modify it
>>>>>>>> to use WebGl and can one hope to get improved performance compared to the
>>>>>>>> standard installation ?
>>>>>>>> - I would like to add a new feature that allows marking with the
>>>>>>>> mouse an area on the dataset and will return the average/Min/Max value of
>>>>>>>> the data points enclosed. Is there some module already existing which I can
>>>>>>>> bring in for this task ?
>>>>>>>>
>>>>>>>>
>>>>>>>> Thank you very much
>>>>>>>>
>>>>>>>> Albrecht
>>>>>>>>
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>>>>>>>>
>>>>>>>
>>>>>>
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>>>>>>
>>>>>
>>>>
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>>>> Paraview-developers
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>>>
>>
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>> Paraview-developers
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