/**
  * This test is cheap but is NOT exact. Use Intersects() if you want a more
  * accurate and more expensive test. Note that when this method is used by an
  * S2RegionCoverer, the accuracy isn't all that important since if a cell may
  * intersect the region then it is subdivided, and the accuracy of this method
  * goes up as the cells get smaller.
  */
 public function mayIntersect(S2Cell $cell)
 {
     // This test is cheap but is NOT exact (see s2latlngrect.h).
     $rb = $cell->getRectBound();
     //      echo __METHOD__ . $cell . ' ' . $rb . "\n";
     return $this->intersects($rb);
 }