/**
* Return the leaf cell containing the given point (a direction vector, not
* necessarily unit length).
*/
public static function fromPoint(S2Point $p)
{
$face = S2Projections::xyzToFace($p);
$uv = S2Projections::validFaceXyzToUv($face, $p);
$i = self::stToIJ(S2Projections::uvToST($uv->x()));
$j = self::stToIJ(S2Projections::uvToST($uv->y()));
return self::fromFaceIJ($face, $i, $j);
}
