pocketmine\math\AxisAlignedBB::shrink PHP Метод

    public function shrink($x, $y, $z)
    {
        return new AxisAlignedBB($this->minX + $x, $this->minY + $y, $this->minZ + $z, $this->maxX - $x, $this->maxY - $y, $this->maxZ - $z);
    }