public function __construct($images)
 {
     parent::__construct($images);
     $total_ratio = $this->sum_ratios($this->images_left);
     $approximate_column_ratio = $total_ratio / 3;
     $column_one_images = $column_two_images = $column_three_images = $sum = 0;
     foreach ($this->images as $image) {
         if ($sum <= $approximate_column_ratio) {
             $column_one_images++;
         }
         if ($sum > $approximate_column_ratio && $sum <= 2 * $approximate_column_ratio) {
             $column_two_images++;
         }
         $sum += $image->ratio;
     }
     $column_three_images = $this->images_left - $column_two_images - $column_one_images;
     if ($column_one_images) {
         $this->shape[] = $column_one_images;
     }
     if ($column_two_images) {
         $this->shape[] = $column_two_images;
     }
     if ($column_three_images) {
         $this->shape[] = $column_three_images;
     }
 }