/**
* @param GetMapObjectsMessage $msg
* @param int $width
*/
protected function addCellIds(GetMapObjectsMessage $msg, $width = 6)
{
$latLng = S2LatLng::fromDegrees($this->session->getLocation()->getLatitude(), $this->session->getLocation()->getLongitude());
$cellId = S2CellId::fromLatLng($latLng)->parent(15);
$size = 2 ** (S2CellId::MAX_LEVEL - $cellId->level());
$iIndex = 0;
$jIndex = 0;
$face = $cellId->toFaceIJOrientation($iIndex, $jIndex);
$halfWidth = (int) floor($width / 2);
for ($x = -$halfWidth; $x <= $halfWidth; $x++) {
for ($y = -$halfWidth; $y <= $halfWidth; $y++) {
$msg->addCellId(S2CellId::fromFaceIJ($face, $iIndex + $x * $size, $jIndex + $y * $size)->parent(15)->id());
}
}
}
