+
+bool HYDROData_PolylineOperator::Extract( const Handle(HYDROData_Document)& theDocument,
+ const Handle(HYDROData_Object)& theObject )
+{
+ if( theObject.IsNull() || theDocument.IsNull() )
+ return false;
+
+ QList<TopoDS_Shape> aBoundShapes;
+ QStringList aBoundNames;
+ QMap<QString, TopTools_IndexedMapOfShape> aNameToShMap;
+
+ theObject->GetBoundaries( aBoundShapes, aBoundNames );
+
+ for( int i=0, n=aBoundShapes.size(); i<n; i++ )
+ {
+ TopoDS_Shape aShape = aBoundShapes[i];
+ if( aShape.IsNull() )
+ continue;
+
+ QString aBoundName = i<aBoundNames.size() ? aBoundNames[i] : "";
+
+ if (!aNameToShMap.contains(aBoundName))
+ {
+ TopTools_IndexedMapOfShape IM;
+ IM.Add(aShape);
+ aNameToShMap[aBoundName] = IM;
+ }
+ else
+ aNameToShMap[aBoundName].Add(aShape);
+
+ }
+
+ foreach( QString K, aNameToShMap.keys() )
+ {
+ const TopTools_IndexedMapOfShape& IM = aNameToShMap.value(K);
+ TopTools_ListOfShape LSE;
+ for (int i = 1; i <= IM.Extent(); i++)
+ {
+ const TopoDS_Edge& E = TopoDS::Edge(IM(i));
+ if (E.IsNull())
+ continue;
+ LSE.Append(E);
+ }
+
+
+ TopoDS_Shape aShapeOut;
+ if (LSE.Extent() == 1)
+ {
+ aShapeOut = LSE.First();
+ }
+ else if (LSE.Extent() > 1)
+ {
+ BRepLib_MakeWire WM;
+ WM.Add(LSE);
+ if (WM.IsDone())
+ aShapeOut = WM.Wire();
+ else
+ continue;
+ }
+ else continue;
+
+ Handle( HYDROData_PolylineXY ) aPolyline =
+ Handle( HYDROData_PolylineXY )::DownCast( theDocument->CreateObject( KIND_POLYLINEXY ) );
+
+ if( aPolyline.IsNull() )
+ return false;
+
+ aPolyline->SetShape( aShapeOut );
+
+ int anIndex = 0;
+ QString aName = K;
+ while( !theDocument->FindObjectByName( aName ).IsNull() )
+ {
+ anIndex++;
+ aName = K + "_" + QString::number( anIndex );
+ }
+ aPolyline->SetName( aName );
+ }
+
+ return true;
+}