[Paraview-developers] Getting previously selected filters programmatically

[Utkarsh Ayachit]

Prashant,

Here's how I would do this (if I follow your goal currectly).

+ Create a new VTK reader/source by subclassing  vtkAlgorithm (or
vtkMultiBlockDataSetAlgorithm) that reads the database to produce the
MultiBlockDataSet of interest.
+ Define a proxy for this reader/source. See ParaView Plugins Howto
(http://www.paraview.org/Wiki/ParaView/Plugin_HowTo#Adding_a_Reader).
+ Now, when the button is clicked, instantiate your reader proxy and
then create new proxies for the pipeline you're interested and connect
to this source proxy.

In ParaView you create pipelines to operate on data, you don't connect
the data directly to anything.

Hope that helps.

Utkarsh

On Mon, May 18, 2015 at 11:11 PM, Prashant V
<prashant.v at quest-global.com> wrote:
> Hi,
>
>
>
> I am new to ParaView and developing a Paraview plugin. What I want to do
> with plugin is:
>
>
>
> 1) User loads MultiBlockDataSet through File->Open (Standard paraview
> operation; not part of my plugin)
> 2) Apply some filters (Standard paraview operation; not part of my plugin)
> 3) Click on Apply button (MultiBlockData is rendered; Standard paraview
> operation; not part of my plugin)
>
>
>
> 4) Now user clicks my plugin button/icon at toolbar. My plugin fetches a
> different MultiBlockDataSet data from a database, apply same filter
> properties (as selected by user in step 2) and renders in Paraview.
>
>
>
> I went through the API and understood that I can get selected filters
> through vtkSMSessionProxyManager class using GetProxy() method (which
> returns vtkSMProxy object). However I couldn't find how to apply this
> vtkSMProxy object to MultiBlockDataSet programmatically.
>
>
>
> Am i going in right direction? Is there any other way of applying previously
> selected filters to dataset programmatically? Thanks a lot in anticipation
> of help!
>
>
>
> Prashant
>
>
>
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