public static function ExtendOptions(array $options = [])
    {
        $options = array_merge( [
            'width'=>null,
            'height'=>null,

            'focusX'=>0,
            'focusY'=>0,

            'resize'=>false,
        ], $options );

        // Format to strings
        $options['width'] = $options['width'] ?: '_';
        $options['height'] = $options['height'] ?: '_';

        return $options;
    }