[vtkusers] Cell Picking to return FE element ID?

[Malcolm Drummond]

Hi Steve

If the problem is due to cell decomposition for rendering, then using
vtkIdFilter upstream might help. Otherwise you'll have to assign IDs as cell
values when creating your unstructured grid (or when you write the UG file).
You can just use the pick ID as an index into the array of original IDs (in
cell-data scalars).

HTH
Malcolm

----- Original Message -----
From: "Steve Boyd" <skboyd at ucalgary.ca>
To: "vtk" <vtkusers at public.kitware.com>
Sent: Thursday, October 28, 2004 1:56 AM
Subject: [vtkusers] Cell Picking to return FE element ID?


> Hi,
>
> I read in my finite element results as unstructured data and then render
> them.  I'd like to use cell picking to ID certain cells from the FE model.
>
> Right now, cell picking returns the ID of the rendered primative (i.e.,
> a face of one of the elements) rather than the original element ID.
>
> How can I return the FE element ID rather than the rendered face ID
> (which is meaningless in terms of the original FE data)?
>
> Thanks,
>
> Steve
>
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