+ bool isSameDomain = false;
+
+ // find myNodeID by myXYZ if possible
+ if ( myMeshModifTracer.GetMesh() )
+ {
+ auto_ptr<SMESH_ElementSearcher> searcher
+ ( SMESH_MeshAlgos::GetElementSearcher( (SMDS_Mesh&) *myMeshModifTracer.GetMesh() ));
+
+ vector< const SMDS_MeshElement* > foundElems;
+ searcher->FindElementsByPoint( gp_Pnt(x,y,z), SMDSAbs_All, foundElems );
+
+ if ( !foundElems.empty() )
+ {
+ myNodeID = foundElems[0]->GetNode(0)->GetID();
+ if ( myOkIDsReady && !myMeshModifTracer.IsMeshModified() )
+ isSameDomain = IsSatisfy( foundElems[0]->GetID() );
+ }
+ }
+ if ( !isSameDomain )
+ clearOkIDs();
+}
+
+bool ConnectedElements::IsSatisfy( long theElementId )
+{
+ // Here we do NOT check if the mesh has changed, we do it in Set...() only!!!
+
+ if ( !myOkIDsReady )
+ {
+ if ( !myMeshModifTracer.GetMesh() )
+ return false;
+ const SMDS_MeshNode* node0 = myMeshModifTracer.GetMesh()->FindNode( myNodeID );
+ if ( !node0 )
+ return false;
+
+ list< const SMDS_MeshNode* > nodeQueue( 1, node0 );
+ std::set< int > checkedNodeIDs;
+ // algo:
+ // foreach node in nodeQueue:
+ // foreach element sharing a node:
+ // add ID of an element of myType to myOkIDs;
+ // push all element nodes absent from checkedNodeIDs to nodeQueue;
+ while ( !nodeQueue.empty() )
+ {
+ const SMDS_MeshNode* node = nodeQueue.front();
+ nodeQueue.pop_front();
+
+ // loop on elements sharing the node
+ SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator();
+ while ( eIt->more() )
+ {
+ // keep elements of myType
+ const SMDS_MeshElement* element = eIt->next();
+ if ( element->GetType() == myType )
+ myOkIDs.insert( myOkIDs.end(), element->GetID() );
+
+ // enqueue nodes of the element
+ SMDS_ElemIteratorPtr nIt = element->nodesIterator();
+ while ( nIt->more() )
+ {
+ const SMDS_MeshNode* n = static_cast< const SMDS_MeshNode* >( nIt->next() );
+ if ( checkedNodeIDs.insert( n->GetID() ).second )
+ nodeQueue.push_back( n );
+ }
+ }
+ }
+ if ( myType == SMDSAbs_Node )
+ std::swap( myOkIDs, checkedNodeIDs );
+
+ size_t totalNbElems = myMeshModifTracer.GetMesh()->GetMeshInfo().NbElements( myType );
+ if ( myOkIDs.size() == totalNbElems )
+ myOkIDs.clear();
+
+ myOkIDsReady = true;
+ }
+
+ return myOkIDs.empty() ? true : myOkIDs.count( theElementId );
+}
+
+//================================================================================
+/*!
+ * \brief Class CoplanarFaces
+ */
+//================================================================================
+
+CoplanarFaces::CoplanarFaces()
+ : myFaceID(0), myToler(0)
+{
+}
+void CoplanarFaces::SetMesh( const SMDS_Mesh* theMesh )
+{
+ myMeshModifTracer.SetMesh( theMesh );
+ if ( myMeshModifTracer.IsMeshModified() )
+ {
+ // Build a set of coplanar face ids
+
+ myCoplanarIDs.clear();
+
+ if ( !myMeshModifTracer.GetMesh() || !myFaceID || !myToler )
+ return;
+
+ const SMDS_MeshElement* face = myMeshModifTracer.GetMesh()->FindElement( myFaceID );
+ if ( !face || face->GetType() != SMDSAbs_Face )
+ return;
+
+ bool normOK;
+ gp_Vec myNorm = getNormale( static_cast<const SMDS_MeshFace*>(face), &normOK );
+ if (!normOK)