LiveSource plugin in Trame

[JT3DAI]

I have a plugin that works as a live source in Paraview QT application. I run it as a macro in the pipeline. But when I take that same script and run the same macro in trame it only calls the RequestData once for the plugin - it should be called every 500ms. Am I missing something?

[GFerretKitware]

Hi @JT3DAI, I'm not the expert on this ( he is on vacation), so I hope I'm not saying anything wrong below.

The LiveSource mechanism in ParaView is handled through QT timer mechanism ( QElapsed timer class in the LiveSourceManager.
From my understanding, in trame QT is not available, so this mechanism needs to be recreated.

Here is an example in LidarView that recreates this behavior using python asyncio timer to create a LiveSource for a Lidar stream in LidarView
https://gitlab.kitware.com/LidarView/lidarview-core/-/blob/master/Examples/Trame/SimpleStream.py?ref_type=heads

There are probably smarter mechanisms that can be put in place in trame to handle this.
I hope this helps.

[JT3DAI]

I think you are 100% on this - it looks like this to me also .I assumed it was a paraview server side solution. No problems - I'll implement on the Trame side

Thanks