[vtkusers] ActiViz C# | Get Cells of a Polydata | Get Points of every cell in PolyData

[Matias Montroull]

Wow, your code works like a charm. I only had to delete the definition
"double" below each double array variable declaration.

Now, last question, I have a count of 1279226 Cells.. pa, pb and pc are 3
Points in that Cell or how is it? How many points a cell has?


On Wed, Jan 15, 2014 at 2:49 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> I think you are just missing this final piece inside your loop:
>
>   {
>
>     ...
>     double[] pa = new double[3];
>     double pa = polys.GetPoint(a);
>     double[] pb = new double[3];
>     double pb = polys.GetPoint(b);
>     double[] pc = new double[3];
>     double pc = polys.GetPoint(c);
>   }
>
> The details of the syntax are just guesswork on my part, because I've
> never used C# or Activiz.
>
>   David
>
> On Wed, Jan 15, 2014 at 9:45 AM, Matias Montroull <matimontg at gmail.com>
> wrote:
> > Hi,
> >
> > I'm trying to get the Cells out of a PolyData. So far I've done this:
> >
> >               vtkCellArray Cellarray = new vtkCellArray();
> >               Cellarray = polys.GetPolys(); //where polys is a
> vtkpolydata
> > instance
> >               int numcells = Cellarray.GetNumberOfCells(); //I get the
> > number of cells, I want to iterate through each cell..
> >
> > I've done this:
> >               vtkIdList idlist = new vtkIdList();
> >
> >               Cellarray.InitTraversal();
> >
> >               for (int j = 0; j < polys.GetNumberOfPolys(); j++)
> >               {
> >                   Cellarray.GetNextCell(idlist);
> >
> >                   double a = idlist.GetId(0);
> >                   double b = idlist.GetId(1);
> >                   double c = idlist.GetId(2);
> >               }
> > but I don't get the points in the cell, what I'm doing wrong?
>
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