Viewing file:  RoundnessModule.php (4.37 KB) -rwxr-x---
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<?php
declare(strict_types = 1);
namespace BaconQrCode\Renderer\Module;
use BaconQrCode\Encoder\ByteMatrix;
use BaconQrCode\Exception\InvalidArgumentException;
use BaconQrCode\Renderer\Module\EdgeIterator\EdgeIterator;
use BaconQrCode\Renderer\Path\Path;
/**
* Rounds the corners of module groups.
*/
final class RoundnessModule implements ModuleInterface
{
public const STRONG = 1;
public const MEDIUM = .5;
public const SOFT = .25;
/**
* @var float
*/
private $intensity;
public function __construct(float $intensity)
{
if ($intensity <= 0 || $intensity > 1) {
throw new InvalidArgumentException('Intensity must between 0 (exclusive) and 1 (inclusive)');
}
$this->intensity = $intensity / 2;
}
public function createPath(ByteMatrix $matrix) : Path
{
$path = new Path();
foreach (new EdgeIterator($matrix) as $edge) {
$points = $edge->getSimplifiedPoints();
$length = count($points);
$currentPoint = $points[0];
$nextPoint = $points[1];
$horizontal = ($currentPoint[1] === $nextPoint[1]);
if ($horizontal) {
$right = $nextPoint[0] > $currentPoint[0];
$path = $path->move(
$currentPoint[0] + ($right ? $this->intensity : -$this->intensity),
$currentPoint[1]
);
} else {
$up = $nextPoint[0] < $currentPoint[0];
$path = $path->move(
$currentPoint[0],
$currentPoint[1] + ($up ? -$this->intensity : $this->intensity)
);
}
for ($i = 1; $i <= $length; ++$i) {
if ($i === $length) {
$previousPoint = $points[$length - 1];
$currentPoint = $points[0];
$nextPoint = $points[1];
} else {
$previousPoint = $points[(0 === $i ? $length : $i) - 1];
$currentPoint = $points[$i];
$nextPoint = $points[($length - 1 === $i ? -1 : $i) + 1];
}
$horizontal = ($previousPoint[1] === $currentPoint[1]);
if ($horizontal) {
$right = $previousPoint[0] < $currentPoint[0];
$up = $nextPoint[1] < $currentPoint[1];
$sweep = ($up xor $right);
if ($this->intensity < 0.5
|| ($right && $previousPoint[0] !== $currentPoint[0] - 1)
|| (! $right && $previousPoint[0] - 1 !== $currentPoint[0])
) {
$path = $path->line(
$currentPoint[0] + ($right ? -$this->intensity : $this->intensity),
$currentPoint[1]
);
}
$path = $path->ellipticArc(
$this->intensity,
$this->intensity,
0,
false,
$sweep,
$currentPoint[0],
$currentPoint[1] + ($up ? -$this->intensity : $this->intensity)
);
} else {
$up = $previousPoint[1] > $currentPoint[1];
$right = $nextPoint[0] > $currentPoint[0];
$sweep = ! ($up xor $right);
if ($this->intensity < 0.5
|| ($up && $previousPoint[1] !== $currentPoint[1] + 1)
|| (! $up && $previousPoint[0] + 1 !== $currentPoint[0])
) {
$path = $path->line(
$currentPoint[0],
$currentPoint[1] + ($up ? $this->intensity : -$this->intensity)
);
}
$path = $path->ellipticArc(
$this->intensity,
$this->intensity,
0,
false,
$sweep,
$currentPoint[0] + ($right ? $this->intensity : -$this->intensity),
$currentPoint[1]
);
}
}
$path = $path->close();
}
return $path;
}
}
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