Method resize

/**
 * Method to resize the current image.
 *
 * @param   mixed    $width        The width of the resized image in pixels or a percentage.
 * @param   mixed    $height       The height of the resized image in pixels or a percentage.
 * @param   boolean  $createNew    If true the current image will be cloned, resized and returned; else
 *                                 the current image will be resized and returned.
 * @param   integer  $scaleMethod  Which method to use for scaling
 *
 * @return  Image
 *
 * @since   2.5.0
 * @throws  \LogicException
 */
public function resize($width, $height, $createNew = true, $scaleMethod = self::SCALE_INSIDE)
{
    // Sanitize width.
    $width = $this->sanitizeWidth($width, $height);
    // Sanitize height.
    $height = $this->sanitizeHeight($height, $width);
    // Prepare the dimensions for the resize operation.
    $dimensions = $this->prepareDimensions($width, $height, $scaleMethod);
    // Instantiate offset.
    $offset = new \stdClass();
    $offset->x = $offset->y = 0;
    // Center image if needed and create the new truecolor image handle.
    if ($scaleMethod == self::SCALE_FIT) {
        // Get the offsets
        $offset->x = round(($width - $dimensions->width) / 2);
        $offset->y = round(($height - $dimensions->height) / 2);
        $handle = imagecreatetruecolor($width, $height);
        // Make image transparent, otherwise canvas outside initial image would default to black
        if (!$this->isTransparent()) {
            $transparency = imagecolorallocatealpha($this->getHandle(), 0, 0, 0, 127);
            imagecolortransparent($this->getHandle(), $transparency);
        }
    } else {
        $handle = imagecreatetruecolor($dimensions->width, $dimensions->height);
    }
    // Allow transparency for the new image handle.
    imagealphablending($handle, false);
    imagesavealpha($handle, true);
    if ($this->isTransparent()) {
        // Get the transparent color values for the current image.
        $rgba = imagecolorsforindex($this->getHandle(), imagecolortransparent($this->getHandle()));
        $color = imagecolorallocatealpha($handle, $rgba['red'], $rgba['green'], $rgba['blue'], $rgba['alpha']);
        // Set the transparent color values for the new image.
        imagecolortransparent($handle, $color);
        imagefill($handle, 0, 0, $color);
    }
    if (!$this->generateBestQuality) {
        imagecopyresized($handle, $this->getHandle(), $offset->x, $offset->y, 0, 0, $dimensions->width, $dimensions->height, $this->getWidth(), $this->getHeight());
    } else {
        // Use resampling for better quality
        imagecopyresampled($handle, $this->getHandle(), $offset->x, $offset->y, 0, 0, $dimensions->width, $dimensions->height, $this->getWidth(), $this->getHeight());
    }
    // If we are resizing to a new image, create a new Image object.
    if ($createNew) {
        return new static($handle);
    }
    // Swap out the current handle for the new image handle.
    $this->destroy();
    $this->handle = $handle;
    return $this;
}