text: /*===============================================================================
  Copyright (c) 2015-2016 PTC Inc. All Rights Reserved.
  
  Copyright (c) 2012-2014 Qualcomm Connected Experiences, Inc. All Rights Reserved.
  
  Vuforia is a trademark of PTC Inc., registered in the United States and other 
  countries.
  
  @file
      UIGLViewProtocol.h
   
  @brief
      <b>iOS:</b> Header file for the iOS-specific UIGLViewProtocol protocol.
  ===============================================================================*/
  #ifndef _UIGLVIEWPROTOCOL_H_
  #define _UIGLVIEWPROTOCOL_H_
  
  /**
   <b>iOS:</b> This protocol applies only to the iOS platform.<BR>
   <BR>
   UIGLViewProtocol protocol.  The apps's UIView-derived class may conform to
   UIGLViewProtocol to allow Vuforia to call the renderFrameVuforia method when it
   wishes to render the current frame.  This is an informal protocol.  The
   view hierarchy is traversed asking each node whether it respondsToSelector
   renderFrameVuforia.  Note: if more than one view in the hierarchy responds to 
   this selector then only one will be chosen, and it is undefined which that
   will be.
   If no view that responds to renderFrameVuforia is found, then the application
   is responsible for scheduling its own rendering.
   */
  @protocol UIGLViewProtocol
  /// <b>iOS:</b> Called by Vuforia to render the current frame
  - (void)renderFrameVuforia;
  @end
  
  #endif // _UIGLVIEWPROTOCOL_H_
  