Method StructuredExecute

Filters/General/vtkDataSetTriangleFilter.cxx:65–185

}

void vtkDataSetTriangleFilter::StructuredExecute(vtkDataSet* input, vtkUnstructuredGrid* output)
{
  int dimensions[3], i, j, k, l, m;
  vtkIdType newCellId, inId;
  vtkCellData* inCD = input->GetCellData();
  vtkCellData* outCD = output->GetCellData();
  vtkPoints* newPoints = vtkPoints::New();
  vtkIdList* cellPtIds = vtkIdList::New();
  int numSimplices, numPts, dim, type;
  vtkIdType pts[4], num;

  // Create an array of points. This does an explicit creation
  // of each point.
  num = input->GetNumberOfPoints();
  newPoints->SetNumberOfPoints(num);
  for (i = 0; i < num; ++i)
  {
    newPoints->SetPoint(i, input->GetPoint(i));
  }

  outCD->CopyAllocate(inCD, input->GetNumberOfCells() * 5);
  output->Allocate(input->GetNumberOfCells() * 5);

  if (input->IsA("vtkStructuredPoints"))
  {
    static_cast<vtkStructuredPoints*>(input)->GetDimensions(dimensions);
  }
  else if (input->IsA("vtkStructuredGrid"))
  {
    static_cast<vtkStructuredGrid*>(input)->GetDimensions(dimensions);
  }
  else if (input->IsA("vtkImageData"))
  {
    static_cast<vtkImageData*>(input)->GetDimensions(dimensions);
  }
  else if (input->IsA("vtkRectilinearGrid"))
  {
    static_cast<vtkRectilinearGrid*>(input)->GetDimensions(dimensions);
  }
  else
  {
    // Every kind of structured data is listed above, this should never happen.
    // Report an error and produce no output.
    vtkErrorMacro("Unrecognized data set " << input->GetClassName());
    // Dimensions of 1x1x1 means a single point, i.e. dimensionality of zero.
    dimensions[0] = 1;
    dimensions[1] = 1;
    dimensions[2] = 1;
  }

  dimensions[0] = dimensions[0] - 1;
  dimensions[1] = dimensions[1] - 1;
  dimensions[2] = dimensions[2] - 1;

  vtkIdType numSlices = (dimensions[2] > 0 ? dimensions[2] : 1);
  bool abort = false;
  for (k = 0; k < numSlices && !abort; k++)
  {