[vtkusers] some queries with vtkcellarrays

[Chiranjib Sur]

Hi VTK experts,
I am not an expert vtk programmers like many others in the forum. I have a
confusion.

I am creating a set of vtk points (and eventually a vtkpolydata) and want
to create vtkcells for the associated points. I was looking at the examples
and trying to implement this way (
http://www.vtk.org/gitweb?p=VTK.git;a=blob;f=Examples/VisualizationAlgorithms/Cxx/TubesWithVaryingRadiusAndColors.cxx
)

What I am observing is that when I create vtkcells, I only create ONE cell.
What is going wrong here and why not all vtkcells are created?

Any suggestions ?

Thanks in advance,
Chiranjib

Here is my code snippet



// VTK points are defined here

    vtkSmartPointer<vtkPoints> newPoints =
vtkSmartPointer<vtkPoints>::New();

// Set precision for the vtk points
   newPoints->SetDataType( VTK_DOUBLE );

    unsigned int count = 0;
    double resolution = 0.1;

// Create the points for the entire volume
      for (unsigned int j = 0; j<10; j++)
      {
         for (unsigned int i = 0; i<10; i++)
         {
            for (unsigned int k = 0; k<10; k++)
            {
               newPoints->InsertNextPoint( x0[0]+ resolution*i, x0[1]+
resolution*j, x0[2]+ resolution*k );
               count++;
            }
         }
      }

std::cout << "length of mycube = " << xl << ","<<yl<<","<<zl << std::endl;
std::cout << "Number of points = " << count << std::endl;



   // Insert vtk cell arrays
   vtkSmartPointer<vtkCellArray> cell =
vtkSmartPointer<vtkCellArray>::New();

   cell->InsertNextCell( count);

   for (vtkIdType i= 0; i < count; i++)
   {
   cell->InsertCellPoint(i);
   }

// Define the polydata for the cube
      vtkSmartPointer<vtkPolyData> np = vtkSmartPointer<vtkPolyData>::New();
      np->SetPoints( newPoints );
      np->SetLines( cell);

   std::cout << "Number of cells "<< np->GetNumberOfCells() << ":" << count
<< std::endl;
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