[Ves] VTK pipelines in VES

[Matthias Baitsch]

Dear Aashish

On Sep 4, 2013, at 3:05 PM, Aashish Chaudhary <aashish.chaudhary at kitware.com> wrote:

> Dear Matthias, 
> 
> On Wed, Sep 4, 2013 at 6:26 AM, Matthias Baitsch <matthias.baitsch at uni-kassel.de> wrote:
> Dear VES developers,
> 
> we are working on a VES based iPad app where the data to be visualised is created and modified interactively (works great, thanks). However, we need to set up VTK style pipelines (source-filter-mapper-actor) which are updated automatically when rendering occurs.
> 
> As far as I can see, vesKiwiPolyDataRepresentation operates on a vtkPolyData object and cannot be connected to a VTK algorithm.
> 
> Did I miss something here?
> 
> No. You are correct.  
> 
> Attached the code for our workaround, maybe it could be useful. We subclassed vesMapper and vesRenderer. The mapper class updates the pipeline and handles the conversion from vtkPolyData to vesGeometryData (using some code borrowed from Kiwi). Our renderer invokes the mapper's update method if needed (code attached).
> 
> So it sounds like this strategy worked for you? Based on your description and code attached (thanks), it sounds to be me as a reasonable approach. However, do you not use vesKiwiPolyDataRepresentation then? 

It works fine, no problems at all (however, we did copy/paste code and setting up the vesMaterial attributes is a bit cumbersome). And yes, vesKiwiPolyDataRepresentation is not used.

Matthias


> 
> - Aashish
> 
>  
> 
> 
> Best,
> 
> Matthias
> 
> 
> 
> 
> 
> ---
> Vertr.-Prof. Dr.-Ing. Matthias Baitsch
> 
> Universität Kassel
> FB 14 – FG Baustatik
> Raum 2512
> Mönchebergstr. 7
> D-34125 Kassel
> 
> Tel: +49 561 804 3475
> 
> 
> 
> 
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> 
> 
> 
> -- 
> | Aashish Chaudhary 
> | R&D Engineer         
> | Kitware Inc.            
> | www.kitware.com   

---
Vertr.-Prof. Dr.-Ing. Matthias Baitsch

Universität Kassel 
FB 14 – FG Baustatik
Raum 2512
Mönchebergstr. 7
D-34125 Kassel

Tel: +49 561 804 3475




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