code: public static boolean isLeft(IAtom whereIs, IAtom viewFrom, IAtom viewTo) {
          double angle = giveAngleBothMethods(viewFrom, viewTo, whereIs, false);
          if (angle < 0) {
              return (false);
          } else {
              return (true);
          }
      }
docs: Says if an atom is on the left side of a another atom seen from a certain
  atom or not.
  
  @param  whereIs   The atom the position of which is returned
  @param  viewFrom  The atom from which to look
  @param  viewTo    The atom to which to look
  @return           true=is left, false = is not