/**
  * @param Qg $qg
  */
 public static function reindexQg(Qg $qg)
 {
     /** @var Hexa $oldPosition */
     if (isset(self::$indexParQg[$qg->getId()])) {
         $oldPosition = self::$indexParQg[$qg->getId()];
     } else {
         $oldPosition = null;
     }
     if (!is_null($oldPosition) && isset(self::$indexParHexa[$oldPosition->getId()][$qg->getId()])) {
         unset(self::$indexParHexa[$oldPosition->getId()][$qg->getId()]);
     }
     if (!$qg->isEfface()) {
         self::$indexParQg[$qg->getId()] = $qg->getPosition();
         if (!isset(self::$indexParHexa[$qg->getPosition()->getId()])) {
             self::$indexParHexa[$qg->getPosition()->getId()] = new QgCollection();
         }
         if (!isset(self::$indexParHexa[$qg->getPosition()->getId()][$qg->getId()])) {
             self::$indexParHexa[$qg->getPosition()->getId()][$qg->getId()] = $qg;
         }
     }
     /*
      * Zones d'interception
      */
     if (in_array($qg->getIdTypeMission(), Missions::missionsInterception())) {
         foreach ($qg->getPosition()->getCouronnePleine(Missions::$types[Missions::INTERCEPTION]['tailleZone']) as $hexa) {
             if (!isset(self::$indexIntercepteurs[$hexa->getId()])) {
                 self::$indexIntercepteurs[$hexa->getId()] = new QgCollection();
             }
             self::$indexIntercepteurs[$hexa->getId()]->ajout($qg);
         }
     }
 }