Hi,
Some python client related questions -
Some Background: I have a pure-vtk python project that reads in
volumetric and time-series polydata. I'd like to convert this to be a
paraview plugin and macros. Ideally this would be a pure python solution
and it would create two paraview sources (an unstructured grid and
polydata) when the user opens a custom config file. Eventually it would
be great to create a default pipeline of filters too.
Q1 Is it possible to send a vtk unstructured grid object, built within a
python macro, to the Paraview server? FYI I'll probably implement this
with a python plugin instead but wondered if the above implementation is
even possible with Paraview 3.8.1 (or later)?
FYI I played with TrivialProducer and GetClientSideObject but did not
see a way to push the data back to the server without saving to disk
first i.e. the opposite of "Fetch" and then asking paraview to load the
files.
import paraview.vtk as vtk
from paraview.simple import *
.. Create client vtk objects... Now want to display them in paraview...
tp=TrivialProducer()
# Proxy does not support SetOutput
tpclient=tp.GetClientSideObject()
tpclient.SetOutput( myvtkpolydata ) # Nothing appears on server :-(
# How do I send my poly data and ugrid to the server without saving
to disk?
Q2 Is about an alternative implementation idea -
An alternative would be to create a python programmable filter that
reads in the file and wrap it as a plugin. I'd need to two plugins (one
for the UGrid and one of the poly data). Correct? How would you
recommend that I control these from a python macro? e.g. The python
macro would display a filename chooser, read in some basic config
parameters and then set the relevant parameters on each filter before
invoking the filter.
I understand a filechooser may be possible using PyQt but am wondering
if it's trivial to call custom methods and set attributes on a python
programmable filter directly from a python macro (or other python
plugin). Are there any code-snippets that you can recommend? I didnt see
anything relevant on the wiki.
By the way, thanks for the python bindings. We find python development
so much faster than traditional C++ development - it's great not having
to wait for a C++ build to complete.
Thanks for your help!
Lawrence.
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