Method RequestData

Common/ExecutionModel/vtkImageToStructuredPoints.cxx:60–203

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//------------------------------------------------------------------------------
int vtkImageToStructuredPoints::RequestData(
  vtkInformation*, vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
  vtkInformation* inInfo = inputVector[0]->GetInformationObject(0);
  vtkInformation* vectorInfo = inputVector[1]->GetInformationObject(0);
  vtkInformation* outInfo = outputVector->GetInformationObject(0);

  int uExtent[6];
  int* wExtent;

  int idxX, idxY, idxZ;
  int maxX = 0;
  int maxY = 0;
  int maxZ = 0;
  vtkIdType inIncX, inIncY, inIncZ;
  int rowLength;
  unsigned char *inPtr1, *inPtr, *outPtr;
  vtkStructuredPoints* output =
    vtkStructuredPoints::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));
  vtkImageData* data = vtkImageData::SafeDownCast(inInfo->Get(vtkDataObject::DATA_OBJECT()));
  vtkImageData* vData = nullptr;
  if (vectorInfo)
  {
    vData = vtkImageData::SafeDownCast(vectorInfo->Get(vtkDataObject::DATA_OBJECT()));
  }

  outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(), uExtent);
  output->SetExtent(uExtent);

  uExtent[0] += this->Translate[0];
  uExtent[1] += this->Translate[0];
  uExtent[2] += this->Translate[1];
  uExtent[3] += this->Translate[1];
  uExtent[4] += this->Translate[2];
  uExtent[5] += this->Translate[2];

  // if the data extent matches the update extent then just pass the data
  // otherwise we must reformat and copy the data
  if (data)
  {
    wExtent = data->GetExtent();
    if (wExtent[0] == uExtent[0] && wExtent[1] == uExtent[1] && wExtent[2] == uExtent[2] &&
      wExtent[3] == uExtent[3] && wExtent[4] == uExtent[4] && wExtent[5] == uExtent[5])
    {
      if (data->GetPointData())
      {
        output->GetPointData()->PassData(data->GetPointData());
      }
      if (data->GetCellData())
      {
        output->GetCellData()->PassData(data->GetCellData());
      }
      if (data->GetFieldData())
      {
        output->GetFieldData()->ShallowCopy(data->GetFieldData());
      }
    }
    else