Method ManipulateAxes

Views/Infovis/vtkParallelCoordinatesView.cxx:604–654

}

void vtkParallelCoordinatesView::ManipulateAxes(unsigned long eventId)
{
  vtkParallelCoordinatesInteractorStyle* style =
    vtkParallelCoordinatesInteractorStyle::SafeDownCast(this->GetInteractorStyle());
  vtkParallelCoordinatesRepresentation* rep =
    vtkParallelCoordinatesRepresentation::SafeDownCast(this->GetRepresentation());

  double cursorPosition[2], cursorLastPosition[2], cursorStartPosition[2];
  style->GetCursorCurrentPosition(this->GetRenderer(), cursorPosition);
  style->GetCursorLastPosition(this->GetRenderer(), cursorLastPosition);
  style->GetCursorStartPosition(this->GetRenderer(), cursorStartPosition);

  double dx = cursorPosition[0] - cursorLastPosition[0];
  double dy = cursorPosition[1] - cursorLastPosition[1];

  if (eventId == vtkCommand::StartInteractionEvent)
  {
  }
  else if (eventId == vtkCommand::InteractionEvent)
  {
    if (this->SelectedAxisPosition >= 0)
    {
      if (AxisHighlightPosition == VTK_HIGHLIGHT_CENTER)
      {
        double xpos = rep->GetXCoordinateOfPosition(this->SelectedAxisPosition);
        this->SelectedAxisPosition =
          rep->SetXCoordinateOfPosition(this->SelectedAxisPosition, xpos + dx);
        this->SetAxisHighlightPosition(rep, this->SelectedAxisPosition);
      }
      else
      {
        double range[] = { 0.0, 0.0 };
        rep->GetRangeAtPosition(this->SelectedAxisPosition, range);

        if (AxisHighlightPosition == VTK_HIGHLIGHT_MAX)
        {
          range[1] += dy * (range[1] - range[0]);
        }
        else if (AxisHighlightPosition == VTK_HIGHLIGHT_MIN)
        {
          range[0] += dy * (range[1] - range[0]);
        }
        rep->SetRangeAtPosition(this->SelectedAxisPosition, range);
      }
    }
  }
  else if (eventId == vtkCommand::EndInteractionEvent)
  {
    this->SelectedAxisPosition = -1;
  }
}

void vtkParallelCoordinatesView::SelectData(unsigned long eventId)
{