+
+// don't know why this condition is usually true :(
+// if ( node1To2Map.size() * quadFactor < SM1->NbNodes() )
+// MESSAGE("FindMatchingNodes() found too few node pairs starting from nodes ("
+// << vNode1->GetID() << " - " << eNode1[0]->GetID() << ") ("
+// << vNode2->GetID() << " - " << eNode2[0]->GetID() << "):"
+// << node1To2Map.size() * quadFactor << " < " << SM1->NbNodes());