code: private boolean pointPointPredicates_(int cluster, int id_a, int id_b) {
          boolean bRelationKnown = true;
  
          if (m_perform_predicates[MatrixPredicate.InteriorInterior])
          {
              interiorPointInteriorPoint_(cluster, id_a, id_b);
              bRelationKnown &= isPredicateKnown_(MatrixPredicate.InteriorInterior);
          }
  
          if (m_perform_predicates[MatrixPredicate.InteriorExterior])
          {
              interiorPointExteriorPoint_(cluster, id_a, id_b, MatrixPredicate.InteriorExterior);
              bRelationKnown &= isPredicateKnown_(MatrixPredicate.InteriorExterior);
          }
  
          if (m_perform_predicates[MatrixPredicate.ExteriorInterior])
          {
              interiorPointExteriorPoint_(cluster, id_b, id_a, MatrixPredicate.ExteriorInterior);
              bRelationKnown &= isPredicateKnown_(MatrixPredicate.ExteriorInterior);
          }
  
          return bRelationKnown;
  	}
docs: Invokes the 9 relational predicates of Point vs Point.