+ else if ( keycode == 's' )
+ {
+ vtkPNGWriter * writer = vtkPNGWriter::New();
+ vtkWindowToImageFilter * w2i = vtkWindowToImageFilter::New();
+ w2i->SetInput( rwi->GetRenderWindow() );
+ writer->SetInput( w2i->GetOutput() );
+ writer->SetFileName( "snapshot.png" );
+ writer->Write();
+ //std::cerr << "Screenshort saved to snapshot.png" << std::endl;
+ }