+ QString
+ isInvisible("not( isVisible )"),
+ isEmpty("numberOfNodes = 0"),
+ isNotEmpty("numberOfNodes <> 0"),
+
+ // has nodes, edges, etc in VISIBLE! actor
+ hasNodes("(numberOfNodes > 0 )"),//&& isVisible)"),
+ hasElems("(count( elemTypes ) > 0)"),
+ hasDifferentElems("(count( elemTypes ) > 1)"),
+ hasElems0d("({'Elem0d'} in elemTypes)"),
+ hasEdges("({'Edge'} in elemTypes)"),
+ hasFaces("({'Face'} in elemTypes)"),
+ hasVolumes("({'Volume'} in elemTypes)");