Convert XYZ to subchunks

toSubchunks.php

<?php

class LevelUtils
{
	/**
	 * @param Vector3 $pos1
	 * @param Vector3 $pos2
	 */
	static function printRegions(array $pos1, array $pos2)
	{
		$min = self::minVector($pos1, $pos2);
		$max = self::maxVector($pos1, $pos2);
		for ($x = $min[0]; $x <= $max[0]; $x++) {
			for ($z = $min[2]; $z <= $max[2]; $z++) {
				echo "r.$x.$z.mca" . PHP_EOL;
			}
		}
	}

	/**
	 * @param Vector3 $v1
	 * @param Vector3 $v2
	 * @return Vector3
	 */
	static function minVector(array $v1, array $v2)
	{
		return [min($v1[0], $v2[0]) >> 9, 0, min($v1[2], $v2[2]) >> 9];
	}

	/**
	 * @param Vector3 $v1
	 * @param Vector3 $v2
	 * @return Vector3
	 */
	static function maxVector(array $v1, array $v2)
	{
		return [max($v1[0], $v2[0]) >> 9, 0, max($v1[2], $v2[2]) >> 9];
	}
}

LevelUtils::printRegions([-32, 64, -1137], [242, 162, -853]);