[Paraview] optional display at load time

[Charles Law]

Jean,

We have been talking about this for a while.

Currently, ParaView will switch to an outline if the unstructured data has 
a large number of cells.
I am going to add a slider that allows the user to set the threshold.

Longer term, I think we will allow the user to select visibility / 
representation from the selection list before accept is called.

Charles.



At 05:00 AM 3/3/2004, you wrote:

>I have many models composed of multiple outputs:
>         a) 3D cells which I never want to display
>         b) 2D cells which are the boundary parts of the model
>
>The boundary parts are all the external parts (or specific boundary 
>conditions) of the model and as such are most often interesting to display.
>
>The volumetric parts (3D cells) are only used in cutting, contouring, 
>streamlines, etc. and should not be displayed. However, when read in 
>ParaView, they are automatically passed thru vtkPVGeometryFilter (or 
>vtkDataSetSurfaceFilter). I am not sure which one and when actually. In 
>any case, this can be a very expensive computation (I am talking here of 
>volumetric models of 1-100 millions cells) and it is a complete waste of 
>resources since the external faces extracted are redundant with the 
>already present 2D bondary cells.
>
>My reader create in the order of a few hundreds of outputs, each with a 
>well-defined name. Using Extract Parts, I can easily select my 2D cells 
>for display.
>
>When programming directly in C++ or via the wrapping languages interfaces, 
>I can skip the extraction of external surfaces of the 3D cells. Can the 
>same be done in ParaView? What I would like is a default of "no display, 
>thus no extraction at all".
>
>Since ParaView is an application "designed with the need to visualize 
>large data sets in mind", it seems like this should be available.
>
>Any hints?
>TIA
>
>--
>Dr. Jean M. Favre,                            email:favre  at  cscs.ch
>http://www.cscs.ch/people/Favre.html
>CSCS, Swiss Center for Scientific Computing | Tel:  +41 (91) 610.82.40
>Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82
>
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