Created
May 5, 2015 10:09
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| <?php | |
| namespace Foo9\Img; | |
| use Symfony\Component\Process\Process; | |
| use Symfony\Component\Process\ProcessBuilder; | |
| class Compare | |
| { | |
| /** @var integer */ | |
| private $fuzz; | |
| /** @var integer */ | |
| private $timeout; | |
| /** | |
| * | |
| * | |
| * @param integer $fuzz | |
| * @param integer $timeout | |
| */ | |
| public function __construct($fuzz, $timeout = 3600) | |
| { | |
| $this->fuzz = $fuzz; | |
| $this->timeout = $timeout; | |
| } | |
| /** | |
| * | |
| * | |
| * @param string $base | |
| * @param string $compare | |
| * @param string $output | |
| * | |
| * @throws RuntimeException | |
| * | |
| * @return integer | |
| */ | |
| public function run($base, $compare, $output) | |
| { | |
| $cmdline = self::createCmdline($this->fuzz, $base, $compare, $output); | |
| $process = new Process($cmdline); | |
| $process->setTimeout($this->timeout); | |
| $process->run(); | |
| // @see http://www.imagemagick.org/script/compare.php | |
| // The compare program returns 2 on error otherwise 0 | |
| // if the images are similar or 1 if they are dissimilar. | |
| $exitCode = $process->getExitCode(); | |
| switch ($exitCode) { | |
| case 0: | |
| case 1: | |
| $diffPixels = $process->getErrorOutput(); | |
| break; | |
| case 2: | |
| default: | |
| throw new \RuntimeException($process->getErrorOutput()); | |
| } | |
| $size = getimagesize($output); | |
| $allPixels = $size[0] * $size[1]; | |
| return round(($diffPixels / $allPixels) * 100); | |
| } | |
| /** | |
| * | |
| * | |
| * @param integer $fuzz | |
| * @param string $base | |
| * @param string $compare | |
| * @param string $output | |
| * | |
| * @return string | |
| */ | |
| public static function createCmdline($fuzz, $base, $compare, $output) | |
| { | |
| $arguments = ProcessBuilder::create(array( | |
| $base, | |
| $compare, | |
| $output | |
| )) | |
| ->getProcess() | |
| ->getCommandLine(); | |
| return implode(' ', array( | |
| '/usr/local/bin/compare', | |
| '-dissimilarity-threshold 1', | |
| '-fuzz ' . (int) $fuzz . '%', | |
| '-metric AE', | |
| '-highlight-color blue', | |
| $arguments | |
| )); | |
| } | |
| } |
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| <?php | |
| namespace Foo9\Img; | |
| use Symfony\Component\Process\Process; | |
| use Symfony\Component\Process\ProcessBuilder; | |
| class Crop | |
| { | |
| /** @var integer */ | |
| private $timeout; | |
| /** | |
| * | |
| * | |
| * @param integer $timeout | |
| */ | |
| public function __construct($timeout = 3600) | |
| { | |
| $this->timeout = $timeout; | |
| } | |
| /** | |
| * | |
| * | |
| * @param string $base | |
| * @param string $compare | |
| * @param string $output | |
| * | |
| * @throws RuntimeException | |
| * | |
| * @return void | |
| */ | |
| public function run($base, $compare) | |
| { | |
| $cmdline = self::createCmdline($base, $compare); | |
| $process = new Process($cmdline); | |
| $process->setTimeout($this->timeout); | |
| $process->run(); | |
| if (!$process->isSuccessful()) { | |
| throw new \RuntimeException($process->getErrorOutput()); | |
| } | |
| } | |
| /** | |
| * | |
| * | |
| * @param string $base | |
| * @param string $compare | |
| * | |
| * @return string | |
| */ | |
| public static function createCmdline($base, $compare) | |
| { | |
| list($width, $baseHeight) = getimagesize($base); | |
| $compareHeight = getimagesize($compare)[1]; | |
| if ($baseHeight > $compareHeight) { | |
| $imageToCrop = $compare; | |
| $heightToCropTo = $baseHeight; | |
| } else { | |
| $imageToCrop = $base; | |
| $heightToCropTo = $compareHeight; | |
| } | |
| $crop = ProcessBuilder::create(array( | |
| $imageToCrop | |
| )) | |
| ->getProcess() | |
| ->getCommandLine(); | |
| return implode(' ', array( | |
| '/usr/local/bin/convert', | |
| "${crop}", | |
| '-background none', | |
| "-extent ${width}x${heightToCropTo}", | |
| "${crop}" | |
| )); | |
| } | |
| } |
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