[vtkusers] how to find neighbouring vertices in of a vertex

[David.Pont at ForestResearch.co.nz]

Hi Kiran

vtkusers-bounces at vtk.org wrote on 19/03/2005 06:27:45:

>
> hi all,
>   is there a function in vtk to find neighbors of a given vertex.
>

In vtkPolyData you can use BuildLinks followed by:

    // get cells the point belongs to
    myPolyData->GetPointCells( pid, cells );

    // for each cell
    nCells = cells->GetNumberOfIds();
    for( cellNum=0; cellNum<nCells; cellNum++ )
      {
      cid = cells->GetId( cellNum );
      cell = myPolyData->GetCell( cid );
      // get points belonging to this cell
      vtkPoints *pts = cell->GetPoints();

  you would have to keep a list so you dont duplicate points shared by
adjacent cells.

  Dave P

> thanks
>
> kiran
>
>
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