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

	namespace BaconQrCode\Renderer\Module;

	use BaconQrCode\Encoder\ByteMatrix;
	use BaconQrCode\Exception\InvalidArgumentException;
	use BaconQrCode\Renderer\Path\Path;

	/**
	* Renders individual modules as dots.
	*/
	final class DotsModule implements ModuleInterface
	{
	public const LARGE = 1;
	public const MEDIUM = .8;
	public const SMALL = .6;

	/**
	* @var float
	*/
	private $size;

	public function __construct(float $size)
	{
	if ($size <= 0 \|\| $size > 1) {
	throw new InvalidArgumentException('Size must between 0 (exclusive) and 1 (inclusive)');
	}

	$this->size = $size;
	}

	public function createPath(ByteMatrix $matrix) : Path
	{
	$width = $matrix->getWidth();
	$height = $matrix->getHeight();
	$path = new Path();
	$halfSize = $this->size / 2;
	$margin = (1 - $this->size) / 2;

	for ($y = 0; $y < $height; ++$y) {
	for ($x = 0; $x < $width; ++$x) {
	if (! $matrix->get($x, $y)) {
	continue;
	}

	$pathX = $x + $margin;
	$pathY = $y + $margin;

	$path = $path
	->move($pathX + $this->size, $pathY + $halfSize)
	->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX + $halfSize, $pathY + $this->size)
	->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX, $pathY + $halfSize)
	->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX + $halfSize, $pathY)
	->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX + $this->size, $pathY + $halfSize)
	->close()
	;
	}
	}

	return $path;
	}
	}