// Update is called once per fram
 void Update()
 {
     if (Input.GetMouseButtonDown(0))
     {
         Ray        ray  = cameraHelper.ScreenPointToRay();
         RaycastHit info = new RaycastHit();
         if (bvh.RayDetection(ray, info))
         {
             info.transform.GetComponent <Renderer>().material.color = Color.green;
         }
     }
 }