Method RequestData

IO/PDAL/vtkPDALReader.cxx:108–153

}

int vtkPDALReader::RequestData(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** vtkNotUsed(request), vtkInformationVector* outputVector)
{
  try
  {
    // Get the info object
    vtkInformation* outInfo = outputVector->GetInformationObject(0);

    // Get the output
    vtkPolyData* output = vtkPolyData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));

    pdal::StageFactory factory;
    std::string driverName = pdal::StageFactory::inferReaderDriver(this->FileName);
    if (driverName.empty())
    {
      vtkErrorMacro("Cannot infer the reader driver for " << this->FileName);
      return 0;
    }

    pdal::Option opt_filename("filename", this->FileName);
    pdal::Options opts;
    opts.add(opt_filename);
    pdal::Stage* reader = factory.createStage(driverName);
    if (!reader)
    {
      vtkErrorMacro("Cannot open file " << this->FileName);
      return 0;
    }
    reader->setOptions(opts);

    vtkNew<vtkPolyData> pointsPolyData;
    this->ReadPointRecordData(*reader, pointsPolyData);

    // Convert points to verts in output polydata
    vtkNew<vtkVertexGlyphFilter> vertexFilter;
    vertexFilter->SetInputData(pointsPolyData);
    vertexFilter->Update();
    output->ShallowCopy(vertexFilter->GetOutput());
    return VTK_OK;
  }
  catch (const pdal::pdal_error& e)
  {
    vtkErrorMacro(<< "PDAL error: " << e.what());
  }
  return 0;
}

//------------------------------------------------------------------------------
void vtkPDALReader::ReadPointRecordData(pdal::Stage& reader, vtkPolyData* pointsPolyData)