Function requiresOrientationChange

js/load-image-orientation.js:134–140

* Determines if the image requires an orientation change. * * @param {number} [orientation] Defined orientation value * @param {number} [autoOrientation] Auto-orientation based on Exif data * @returns {boolean} Returns true if an orientation change is required

(orientation, autoOrientation)

   * @returns {boolean} Returns true if an orientation change is required
   */
  function requiresOrientationChange(orientation, autoOrientation) {
    return (
      orientation !== autoOrientation &&
      ((orientation === 1 && autoOrientation > 1 && autoOrientation < 9) ||
        (orientation > 1 && orientation < 9))
    )
  }

  /**
   * Determines orientation combinations that require a rotation by 180°.