Method Process

IO/Image/vtkTIFFReader.cxx:600–637

// templated to handle different data types.
template <class OT>
void vtkTIFFReader::Process(OT* outPtr, int outExtent[6], vtkIdType outIncr[3])
{
  // multiple number of pages
  if (this->InternalImage->NumberOfPages > 1)
  {
    this->ReadVolume(outPtr);
    // close the TIFF file
    this->InternalImage->Clean();
    return;
  }

  // tiled image
  if (this->InternalImage->NumberOfTiles > 0)
  {
    this->ReadTiles(outPtr);
    // close the TIFF file
    this->InternalImage->Clean();
    return;
  }

  // The input tiff dataset is neither multiple pages and nor
  // tiled. Hence close the image and start reading each TIFF
  // file
  this->InternalImage->Clean();

  OT* outPtr2 = outPtr;
  for (int idx2 = outExtent[4]; idx2 <= outExtent[5]; ++idx2)
  {
    this->ComputeInternalFileName(idx2);
    // read in a TIFF file
    this->Process2(outPtr2, outExtent);
    // close the TIFF file
    this->InternalImage->Clean();

    this->UpdateProgress((idx2 - outExtent[4]) / (outExtent[5] - outExtent[4] + 1.0));
    outPtr2 += outIncr[2];
  }
}

//------------------------------------------------------------------------------
// This function reads a data from a file.  The datas extent/axes