SquareModule.php
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SquareModule.php
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	<?php
	declare(strict_types = 1);

	namespace BaconQrCode\Renderer\Module;

	use BaconQrCode\Encoder\ByteMatrix;
	use BaconQrCode\Renderer\Module\EdgeIterator\EdgeIterator;
	use BaconQrCode\Renderer\Path\Path;

	/**
	* Groups modules together to a single path.
	*/
	final class SquareModule implements ModuleInterface
	{
	/**
	* @var self\|null
	*/
	private static $instance;

	private function __construct()
	{
	}

	public static function instance() : self
	{
	return self::$instance ?: self::$instance = new self();
	}

	public function createPath(ByteMatrix $matrix) : Path
	{
	$path = new Path();

	foreach (new EdgeIterator($matrix) as $edge) {
	$points = $edge->getSimplifiedPoints();
	$length = count($points);
	$path = $path->move($points[0][0], $points[0][1]);

	for ($i = 1; $i < $length; ++$i) {
	$path = $path->line($points[$i][0], $points[$i][1]);
	}

	$path = $path->close();
	}

	return $path;
	}
	}