text: //
  //  Cube.h
  //  arkit-by-example
  //
  //  Created by md on 6/15/17.
  //  Copyright © 2017 ruanestudios. All rights reserved.
  //
  
  #import <SceneKit/SceneKit.h>
  
  @interface Cube : SCNNode
  
  - (instancetype)initAtPosition:(SCNVector3)position withMaterial:(SCNMaterial *)material;
  - (void)changeMaterial;
  + (SCNMaterial *)currentMaterial;
  
  @end
  