[vtkusers] Error: it says Undefining object ,please have a look

[tony hakki]

Hello All;
I converted vtk polydata to itk mesh. Now I would like to convert that mesh to the vtk poly data for testing if first converting right. To convert mesh to vtk poly data I would like to use the following code ,bur unfortunately it gives an error ,I have also indicated that line with red below.

I want to convert Itk mesh to vtk poly data.
vtkPolyData* ITKMeshToVtkPolyData( MeshType::Pointer mesh )
{
  //Creat a new vtkPolyData
  vtkPolyData* newPolyData = vtkPolyData::New();

  //Creat vtkPoints for insertion into newPolyData
  vtkPoints *points = vtkPoints::New();
  std::cout<<"Points = "<<mesh->GetNumberOfPoints()<<std::endl;

  //Copy all points into the vtkPolyData structure
  PointIterator pntIterator = mesh->GetPoints()->Begin(); // it says PointIterator  is Undefining 
  PointIterator pntItEnd = mesh->GetPoints()->End();
  for (int i = 0; pntIterator != pntItEnd; ++i, ++pntIterator)
    {
    ItkPoint pnt = pntIterator.Value(); // also here it says ItkPoint is undefining ,How can I define them??
    points->InsertPoint(i, pnt[0], pnt[1], pnt[2]);
//       std::cout<<i<<"-th point:  ";
//       std::cout<<pnt[0]<<std::endl;
//       std::cout<<"               "<<pntIterator.Value()<<std::endl;
//      ++pntIterator;
    }
  newPolyData->SetPoints(points);
  points->Delete();

  //Copy all cells into the vtkPolyData structure
  //Creat vtkCellArray into which the cells are copied
  vtkCellArray* triangle = vtkCellArray::New();
  CellIterator cellIt = mesh->GetCells()->Begin();
  CellIterator cellItEnd = mesh->GetCells()->End();
  for (int it = 0; cellIt != cellItEnd; ++it, ++cellIt)
    {
    CellType * cellptr = cellIt.Value();
    //    LineType * line = dynamic_cast<LineType *>( cellptr );
    //    std::cout << line->GetNumberOfPoints() << std::endl;
    //      std::cout << cellptr->GetNumberOfPoints() << std::endl;
    PointIdIterator pntIdIter = cellptr->PointIdsBegin();
    PointIdIterator pntIdEnd = cellptr->PointIdsEnd();
    vtkIdList* pts = vtkIdList::New();
    for (; pntIdIter != pntIdEnd; ++pntIdIter)
      {
      pts->InsertNextId( *pntIdIter );
      //          std::cout<<"           "<<tempCell[it1]<<std::endl;
      }
    triangle->InsertNextCell(pts);
    }
  newPolyData->SetPolys(triangle);
  triangle->Delete();

  // return the vtkUnstructuredGrid
  return newPolyData;
}


Thank you 
Tony


 
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