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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; } }