[vtkusers] How to get neighbors with vtkCellLinks ?

[Jérôme]

Hi,

vtkDelaunay3D is an algorithm, whereas your question deals with data
structures. You should investigate the GetCellNeighbors( ) member function
from vtkUnstructuredGrid.
If you are allowed to use vtkPolyData, you can take a look at the sources of
vtkSmoothPolyDataFilter, that I expect to compute a weighted sum over vertex
neighbors.

Let us know if you solve or not your problem: I will have to implement this
iterator soon.

'Hope that helps
Jerome

2009/7/8 Lloyd Fenelon <lfenelon at bccrc.ca>

>  Hi,
>
>
>
> I am using vtkCellLinks after computing a unstructured grid dataset
>
> with vtkDelaunay3D. I would like to get the neighbors of each points.
>
> Nothing comes out of the BuildLinks method the way I use it:
>
>
>
> ...
>
> vtkSmartPointer<vtkDelaunay3D> delaunay
>       = vtkSmartPointer< vtkDelaunay3D>::New();
>
> computeDelaunay();
>
> ...
>
>
>
> vtkSmartPointer<vtkCellLinks> cellLinks
>       = vtkSmartPointer<vtkCellLinks>::New();
>
>
>
> cellLinks->BuildLinks(delaunay->GetOutput());
>
>
>
>
>
> Actually I don't know how to get back the points Ids
>
> from delaunay so I give the unstuctured grid dataset.
>
> Does someome can explain me what is going wrong here please ?
>
> thank you
>
>
>
> Lloyd
>
>
>
>
>
>
>
>
>
>
>
>
>
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