<area shape="rect" href="$a01261.html" title="Superclass for algorithms that produce only polydata as output." alt="" coords="16,229,171,256"> <area shape="rect" href="$a00101.html" title="Superclass for all sources, filters, and sinks in VTK." alt="" coords="44,155,143,181"> <area shape="rect" href="$a01084.html" title="abstract base class for most VTK objects" alt="" coords="54,80,134,107"> <area shape="rect" href="$a01085.html" title="abstract base class for most VTK objects" alt="" coords="39,5,148,32">