Method rotate

/**
 * Method to rotate the current image.
 *
 * @param   mixed    $angle       The angle of rotation for the image
 * @param   integer  $background  The background color to use when areas are added due to rotation
 * @param   boolean  $createNew   If true the current image will be cloned, rotated and returned; else
 *                                the current image will be rotated and returned.
 *
 * @return  Image
 *
 * @since   2.5.0
 * @throws  \LogicException
 */
public function rotate($angle, $background = -1, $createNew = true)
{
    // Sanitize input
    $angle = (float) $angle;
    // Create the new truecolor image handle.
    $handle = imagecreatetruecolor($this->getWidth(), $this->getHeight());
    // Make background transparent if no external background color is provided.
    if ($background == -1) {
        // Allow transparency for the new image handle.
        imagealphablending($handle, false);
        imagesavealpha($handle, true);
        $background = imagecolorallocatealpha($handle, 0, 0, 0, 127);
    }
    // Copy the image
    imagecopy($handle, $this->getHandle(), 0, 0, 0, 0, $this->getWidth(), $this->getHeight());
    // Rotate the image
    $handle = imagerotate($handle, $angle, $background);
    // If we are resizing to a new image, create a new Image object.
    if ($createNew) {
        return new static($handle);
    }
    // Swap out the current handle for the new image handle.
    $this->destroy();
    $this->handle = $handle;
    return $this;
}