Method RequestData

Common/ExecutionModel/vtkImageToStructuredGrid.cxx:48–85

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//------------------------------------------------------------------------------
int vtkImageToStructuredGrid::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
  vtkInformation* outInfo = outputVector->GetInformationObject(0);
  assert(inInfo != nullptr);
  assert(outInfo != nullptr);

  vtkImageData* img = vtkImageData::SafeDownCast(inInfo->Get(vtkImageData::DATA_OBJECT()));
  assert(img != nullptr);

  vtkStructuredGrid* grid =
    vtkStructuredGrid::SafeDownCast(outInfo->Get(vtkStructuredGrid::DATA_OBJECT()));
  assert(grid != nullptr);

  int dims[3];
  img->GetDimensions(dims);

  vtkPoints* gridPoints = vtkPoints::New();
  assert(gridPoints != nullptr);
  gridPoints->SetDataTypeToDouble();
  gridPoints->SetNumberOfPoints(img->GetNumberOfPoints());

  double pnt[3];
  for (int i = 0; i < img->GetNumberOfPoints(); ++i)
  {
    img->GetPoint(i, pnt);
    gridPoints->SetPoint(i, pnt);
  }
  grid->SetDimensions(dims);
  grid->SetPoints(gridPoints);
  gridPoints->Delete();

  this->CopyPointData(img, grid);
  this->CopyCellData(img, grid);

  return 1;
}

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void vtkImageToStructuredGrid::CopyPointData(vtkImageData* img, vtkStructuredGrid* sgrid)