Ed_imageresizer::_crop PHP Метод

    private function _crop()
    {
        $this->cropratio = explode(':', $this->cropratio);
        if (count($this->cropratio) == 2) {
            $this->ratioComputed = $this->width / $this->height;
            $this->cropRatioComputed = (double) $this->cropratio[0] / (double) $this->cropratio[1];
            if ($this->ratioComputed < $this->cropRatioComputed) {
                // Image is too tall so we will crop the top and bottom
                $this->origHeight = $this->height;
                $this->height = $this->width / $this->cropRatioComputed;
                $this->offsetY = ($this->origHeight - $this->height) / 2;
            } else {
                if ($this->ratioComputed > $this->cropRatioComputed) {
                    // Image is too wide so we will crop off the left and right sides
                    $this->origWidth = $this->width;
                    $this->width = $this->height * $this->cropRatioComputed;
                    $this->offsetX = ($this->origWidth - $this->width) / 2;
                }
            }
        }
    }