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<?php | |
/* | |
* Glide comparison tool | |
*/ | |
$params = $_GET; | |
// Glide V2 | |
if (array_key_exists('glide_version', $params) && $params['glide_version'] === 'v2') { | |
require dirname(__FILE__, 1).'/vendor/autoload.php'; | |
// Setup Glide server | |
$server = \League\Glide\ServerFactory::create([ | |
'driver' => 'gd', | |
'watermarks' => __DIR__.'/source', | |
'source' => __DIR__.'/source', | |
'cache' => __DIR__.'/cache/glide2/' . sha1( | |
// workaround to deactivate caching | |
strval(microtime()) | |
) . '/', | |
]); | |
// Use information from the request | |
unset($params['glide_version']); | |
$server->outputImage('kayaks.jpg', $params); | |
exit; | |
} | |
// Glide V3 | |
if (array_key_exists('glide_version', $params) && $params['glide_version'] === 'v3') { | |
require dirname(__FILE__, 2).'/vendor/autoload.php'; | |
// Setup Glide server | |
$server = \League\Glide\ServerFactory::create([ | |
'driver' => 'gd', | |
'watermarks' => __DIR__.'/source', | |
'source' => __DIR__.'/source', | |
'cache' => __DIR__.'/cache/glide3/' . sha1( | |
// workaround to deactivate caching | |
strval(microtime()) | |
) . '/', | |
]); | |
// Use information from the request | |
unset($params['glide_version']); | |
$server->outputImage('kayaks.jpg', $params); | |
exit; | |
} | |
// Show comparison | |
$paramsV2 = ['glide_version' => 'v2'] + $params; | |
$paramsV3 = ['glide_version' => 'v3'] + $params; | |
?><!DOCTYPE html> | |
<head> | |
<style> | |
.column { | |
float: left; | |
width: 33%; | |
border: solid 1px #111; | |
background-color: #ddd; | |
text-align: center; | |
padding-bottom: 5px; | |
} | |
</style> | |
</head> | |
<body> | |
<h1>Query: <code><?php echo urldecode(http_build_query($params)); ?></code></h1> | |
<div class="row"> | |
<div class="column"> | |
<h3><a href="/?<?php echo http_build_query($paramsV2); ?>">Glide V2</a></h3> | |
<img id="img1" src="index.php?<?php echo http_build_query($paramsV2); ?>" alt="Image generated by Glide v2" style="height=100%"> | |
</div> | |
<div class="column"> | |
<h3><a href="/?<?php echo http_build_query($paramsV3); ?>">Glide V3</a></h3> | |
<img id="img2" src="index.php?<?php echo http_build_query($paramsV3); ?>" alt="Image generated by Glide v3" style="height=100%"> | |
</div> | |
<div class="column"> | |
<h3 id="result">Diff</h3> | |
<canvas id="cnvDiff" style="height=100%"></canvas> | |
</div> | |
</div> | |
<script type="module"> | |
import pixelmatch from 'https://esm.run/pixelmatch@5.3.0'; | |
function compareImages() { | |
var imgBefore = document.getElementById('img1'); | |
var imgAfter = document.getElementById('img2'); | |
var width = imgBefore.width; | |
var height = imgBefore.height; | |
var canvas = document.getElementById('cnvDiff'); | |
canvas.width = width; | |
canvas.height = height; | |
var ctx = canvas.getContext('2d'); | |
var imgDataBefore = getImageData(imgBefore, width, height); | |
var imgDataAfter = getImageData(imgAfter, width, height); | |
var diff = new Uint8ClampedArray(width * height * 4); | |
var options = { | |
threshold: 0.3, | |
}; | |
var numDiffPixels = pixelmatch(imgDataBefore, imgDataAfter, diff, width, height, options); | |
var newImageData = new ImageData(diff, width, height); | |
ctx.putImageData(newImageData, 0, 0); | |
document.getElementById('result').textContent = 'Number of different pixels: ' + numDiffPixels; | |
} | |
function getImageData(img, width, height) { | |
var canvas = document.createElement('canvas'); | |
canvas.width = width; | |
canvas.height = height; | |
var ctx = canvas.getContext('2d'); | |
ctx.drawImage(img, 0, 0, width, height); | |
return ctx.getImageData(0, 0, width, height).data; | |
} | |
setTimeout(compareImages, 2000); | |
</script> | |
</body><?php | |
exit; |
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