public function thumb($width = null, $height = null)
{
$manager = new ImageManager();
$thumb = new PdfThumbnail($this->asset);
if ($width && $height) {
$image = $manager->cache(function ($manager) use($width, $height, $thumb) {
return $manager->make($thumb->getAndMakeFilename())->fit($width, $height);
});
} else {
$image = $manager->make($thumb->getAndMakeFilename())->encode();
}
return $this->response->header('content-type', 'image/png')->setContent($image);
}
