Method RequestData

Filters/General/vtkRotationFilter.cxx:46–213

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
int vtkRotationFilter::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  // get the info objects
  vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
  vtkInformation* outInfo = outputVector->GetInformationObject(0);

  // get the input and output
  vtkDataSet* input = vtkDataSet::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));
  vtkUnstructuredGrid* output =
    vtkUnstructuredGrid::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));

  vtkPointData* inPD = input->GetPointData();
  vtkPointData* outPD = output->GetPointData();
  vtkCellData* inCD = input->GetCellData();
  vtkCellData* outCD = output->GetCellData();

  if (!this->GetNumberOfCopies())
  {
    vtkErrorMacro("No number of copy set!");
    return 1;
  }

  double tuple[3];
  vtkPoints* outPoints;
  double point[3], center[3], negativCenter[3];
  vtkIdType ptId, cellId;
  vtkGenericCell* cell = vtkGenericCell::New();
  vtkIdList* ptIds = vtkIdList::New();

  outPoints = vtkPoints::New();

  vtkIdType numPts = input->GetNumberOfPoints();
  vtkIdType numCells = input->GetNumberOfCells();

  if (this->CopyInput)
  {
    outPoints->Allocate((this->CopyInput + this->GetNumberOfCopies()) * numPts);
    output->Allocate((this->CopyInput + this->GetNumberOfCopies()) * numPts);
  }
  else
  {
    outPoints->Allocate(this->GetNumberOfCopies() * numPts);
    output->Allocate(this->GetNumberOfCopies() * numPts);
  }

  outPD->CopyAllocate(inPD);
  outCD->CopyAllocate(inCD);

  vtkDataArray *inPtVectors, *outPtVectors;
  vtkDataArray *inCellVectors, *outCellVectors;

  inPtVectors = inPD->GetVectors();
  outPtVectors = outPD->GetVectors();
  inCellVectors = inCD->GetVectors();
  outCellVectors = outCD->GetVectors();

  // Copy first points.