SoAnnotation.h

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/*=======================================================================
 * Copyright 1991-1996, Silicon Graphics, Inc.
 * ALL RIGHTS RESERVED
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 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights
 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or
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 * Supplement.  Contractor/manufacturer is Silicon Graphics, Inc.,
 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311.
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**=======================================================================*/
/*=======================================================================
** Author      : Paul S. Strauss (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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 ***                   COPYRIGHT (C) 1996-2019 BY FEI S.A.S,                        ***
 ***                        BORDEAUX, FRANCE                                        ***
 ***                      ALL RIGHTS RESERVED                                       ***
**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_ANNOTATION_
#define  _SO_ANNOTATION_
 
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/SoType.h>
 
SO_PIMPL_PUBLIC_DECLARATION(SoAnnotation)
 
 
//
//  Class: SoAnnotation
//
//  Annotation group node: delays rendering its children until all
//  other nodes have been traversed, turning off depth buffer
//  comparisons first. The result is that the shapes under the
//  annotation node are rendered on top of the rest of the scene.
//
//  Note that if more than one annotation node is present in a graph,
//  the order in which they are traversed determines the stacking
//  order - later nodes are rendered on top of earlier ones. Also note
//  that since depth buffer comparisons are disabled, complex 3D
//  objects may not be rendered correctly when used under annotation
//  nodes.
//
//  All non-rendering actions are inherited as is from SoSeparator.
//
 
class  SoAnnotation : public SoSeparator {
 
  SO_NODE_HEADER(SoAnnotation);
  SO_PIMPL_PUBLIC_HEADER(SoAnnotation)
 
 public:
 
  // No fields
 
  SoAnnotation();
 
 private:
  // Implement actions
  virtual void        GLRender(SoGLRenderAction *action);
  virtual void        GLRenderBelowPath(SoGLRenderAction *action);
  virtual void        GLRenderInPath(SoGLRenderAction *action);
  virtual void        GLRenderOffPath(SoGLRenderAction *action);
  virtual int32_t     getRenderUnitID() const;
 
 private:
  static void         initClass();
  static void         exitClass();
  static void         setNoDelay(SbBool flag);
  static SbBool       getNoDelay();
 
 private:
  // Destructor
  virtual ~SoAnnotation();
 
 private:
  void commonConstructor();
};
 
#endif /* _SO_ANNOTATION_ */