code: function(lines, bbox) {
          for (var i = 0; i < lines.length; i++) {
              if (this.bboxIntersectsLine(lines[i], bbox))
                  return true;
          }
          return false;
      }
docs: ------------------------------------------------------------------------ Lines 
  Returns true if the specified poly-line (defined as a sequence of [x,y]
  coordinates of their segments) has intersections with the specified
  bounding box.