[Paraview] animation: files, pgmable source

[Utkarsh Ayachit]

Randy,

You attempting to mix the Python scripting for data processing and
Python scripting for batch scripting. The two environments are
separate. Here's how I'd tackle it.

1. Make your "Programmable Source" become a temporal source i.e.
report to ParaView that it can produce timesteps matching the files
your file series. See [i]. If you get this right, you shuold be able
to render through all the files by hitting "Play" in the VCR control
in the UI.
2. Now you can write a batch script that either loads the predefined
pvsm state file or builds up the pipeline in Python itself and the
either uses `SaveScreenshot` or `SaveAnimation` to save out the
animation.

You can then mix in camera animations too. You can always use the
Python tracing in UI to figure out how to save images and/or animation
in the batch scripting environment.

Hope that helps.
Utkarsh

[i] https://blog.kitware.com/defining-time-varying-sources-with-paraviews-programmable-source/

On Wed, Dec 6, 2017 at 11:15 AM, Heiland, Randy <heiland at iu.edu> wrote:
> I’m probably missing a basic concept and hoping someone can enlighten me. I
> have a pipeline with a Programmable Source that reads in a (non-VTK
> formatted) file, I process it and then I have filters in my pipeline that
> act on that data. I want to be able to feed multiple files to the pipeline,
> save images and/or create animations. I naively created a Python function in
> the Pgmable Source, then save the PV State to a Python script, thinking I
> could call the function from the end of that script. Doesn’t seem to be
> possible. And I confess I’ve not given this deep thought - it’s easier to
> ask the experts :-)  Bottom line, we want to make this as dead simple for
> our own users.
>
> Fwiw, I’ve zipped up 2 files - a .pvsm and a sample data file here:
> http://pages.iu.edu/~heiland/physicell/pv_pcell.zip . You’d need to edit the
> “dir” path in the Pgmable Source.
>
> Initially, I just want to save images/animation (over multiple files) with a
> fixed camera view; later, it’d be nice to have simultaneous camera movement.
>
> thanks, Randy
>
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