Method ExtractLineString

IO/GeoJSON/vtkGeoJSONFeature.cxx:172–199

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//------------------------------------------------------------------------------
vtkPolyData* vtkGeoJSONFeature::ExtractLineString(
  const Json::Value& coordinates, vtkPolyData* outputData)
{
  // Check if Coordinates corresponds to Line String
  if (!IsLineString(coordinates))
  {
    vtkErrorMacro(<< "Wrong data format for a Line String!");
    return nullptr;
  }

  vtkPoints* points = outputData->GetPoints();
  vtkNew<vtkPolyLine> polyLine;
  double xyz[3];
  vtkIdList* pointIdList = polyLine->GetPointIds();
  vtkIdType pointId;
  for (Json::Value::ArrayIndex i = 0; i < coordinates.size(); i++)
  {
    this->CreatePoint(coordinates[i], xyz);
    pointId = points->InsertNextPoint(xyz);
    pointIdList->InsertNextId(pointId);
  }
  outputData->GetLines()->InsertNextCell(polyLine);
  vtkAbstractArray* array = outputData->GetCellData()->GetAbstractArray("feature-id");
  vtkStringArray* ids = vtkArrayDownCast<vtkStringArray>(array);
  ids->InsertNextValue(this->FeatureId);

  return outputData;
}

//------------------------------------------------------------------------------
vtkPolyData* vtkGeoJSONFeature::ExtractMultiLineString(