michaelschiemer/tests/debug/test-svg-coordinates.php

<?php

declare(strict_types=1);

require_once __DIR__ . '/../../vendor/autoload.php';

use App\Framework\QrCode\QrCodeGenerator;
use App\Framework\QrCode\QrCodeRenderer;
use App\Framework\QrCode\ValueObjects\ErrorCorrectionLevel;
use App\Framework\QrCode\ValueObjects\QrCodeConfig;
use App\Framework\QrCode\ValueObjects\QrCodeVersion;
use App\Framework\QrCode\ValueObjects\EncodingMode;
use App\Framework\QrCode\ValueObjects\QrCodeStyle;

echo "=== Testing SVG Coordinate Rendering ===\n\n";

$config = new QrCodeConfig(
    version: QrCodeVersion::fromNumber(1),
    errorCorrectionLevel: ErrorCorrectionLevel::M,
    encodingMode: EncodingMode::BYTE
);

$matrix = QrCodeGenerator::generate('HELLO', $config);
$size = $matrix->getSize();

echo "Matrix size: {$size}x{$size}\n\n";

// Check top-left finder pattern in matrix
echo "=== Top-Left Finder Pattern in Matrix ===\n";
echo "Expected pattern (7x7):\n";
echo "███████\n";
echo "█░░░░░█\n";
echo "█░███░█\n";
echo "█░███░█\n";
echo "█░███░█\n";
echo "█░░░░░█\n";
echo "███████\n\n";

echo "Actual pattern from matrix:\n";
for ($r = 0; $r < 7; $r++) {
    echo "  ";
    for ($c = 0; $c < 7; $c++) {
        $isDark = $matrix->getModuleAt($r, $c)->isDark();
        echo $isDark ? '█' : '░';
    }
    echo "\n";
}

echo "\n";

// Now render SVG and check coordinates
$style = QrCodeStyle::large();
$renderer = new QrCodeRenderer();
$svg = $renderer->renderCustom($matrix, $style, false);

// Extract rectangles for top-left finder (should be around x=80, y=80)
echo "=== Top-Left Finder Pattern in SVG ===\n";
echo "Expected: Should start at x=80, y=80 (quiet zone 80px)\n";
echo "Looking for rectangles in area x=80-220, y=80-220:\n\n";

preg_match_all('/<rect x="(\d+\.?\d*)" y="(\d+\.?\d*)" width="(\d+\.?\d*)" height="(\d+\.?\d*)" fill="black"/', $svg, $matches, PREG_SET_ORDER);

$finderRects = [];
foreach ($matches as $m) {
    $x = (float)$m[1];
    $y = (float)$m[2];
    if ($x >= 80 && $x <= 220 && $y >= 80 && $y <= 220) {
        $finderRects[] = [
            'x' => $x,
            'y' => $y,
            'row' => (int)(($y - 80) / 20),
            'col' => (int)(($x - 80) / 20),
        ];
    }
}

// Sort by row, then col
usort($finderRects, function($a, $b) {
    if ($a['row'] !== $b['row']) {
        return $a['row'] <=> $b['row'];
    }
    return $a['col'] <=> $b['col'];
});

echo "Found " . count($finderRects) . " rectangles in finder pattern area\n\n";

// Check if coordinates match expected pattern
echo "First row (should be all dark at y=80):\n";
$firstRowRects = array_filter($finderRects, fn($r) => $r['row'] === 0);
foreach ($firstRowRects as $rect) {
    echo "  x={$rect['x']}, y={$rect['y']}, row={$rect['row']}, col={$rect['col']}\n";
}

if (count($firstRowRects) === 7) {
    echo "✅ First row has 7 modules (correct)\n";
} else {
    echo "❌ First row has " . count($firstRowRects) . " modules (expected 7)\n";
}

// Check if row/col match matrix
echo "\n=== Coordinate Verification ===\n";
$errors = 0;
foreach ($finderRects as $rect) {
    $matrixRow = $rect['row'];
    $matrixCol = $rect['col'];
    
    if ($matrixRow >= 0 && $matrixRow < 7 && $matrixCol >= 0 && $matrixCol < 7) {
        $isDark = $matrix->getModuleAt($matrixRow, $matrixCol)->isDark();
        if (!$isDark) {
            echo "❌ Error: Matrix at ({$matrixRow}, {$matrixCol}) is LIGHT, but SVG has dark rect at ({$rect['x']}, {$rect['y']})\n";
            $errors++;
        }
    }
}

if ($errors === 0) {
    echo "✅ All SVG coordinates match matrix positions\n";
} else {
    echo "❌ Found {$errors} coordinate mismatches\n";
}

// Check timing pattern
echo "\n=== Timing Pattern Check ===\n";
echo "Timing pattern should be at row 6, alternating modules\n";
echo "Matrix row 6:\n";
echo "  ";
for ($c = 0; $c < $size; $c++) {
    $isDark = $matrix->getModuleAt(6, $c)->isDark();
    echo $isDark ? '█' : '░';
}
echo "\n";

// Check if timing pattern is rendered in SVG
$timingY = 80 + 6 * 20; // 200
$timingRects = array_filter($matches, function($m) use ($timingY) {
    $y = (float)$m[2];
    return abs($y - $timingY) < 0.1;
});

echo "SVG rectangles at y={$timingY} (timing row):\n";
foreach ($timingRects as $m) {
    $x = (float)$m[1];
    $col = (int)(($x - 80) / 20);
    echo "  x={$x}, col={$col}\n";
}