Hi All,<br><br>I used the codes following to get the mapper of a volume actor, but I get NULL while <i>volume </i>is not NULL.<br><br><i> vtkAbstractMapper3D *mapper = NULL;<br> if ( (volume = vtkVolume::SafeDownCast(propCandidate)) != NULL )<br>
mapper = volume->GetMapper();<br></i><br>Why? Thanks for any advice!<br><br>Best wishes!<br>