SoStereoElement.h

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**=======================================================================*/
/*=======================================================================
** Author      : Olivier Fedkiw (MMM yyyy)
**=======================================================================*/
 
#ifndef _SO_STEREO_ELEMENT
#define _SO_STEREO_ELEMENT
 
#include <Inventor/nodes/SoCamera.h>
#include <Inventor/elements/SoSubElement.h>
 
SoEXTENDER_Documented class  SoStereoElement : public SoElement {
  
  SO_ELEMENT_HEADER(SoStereoElement);
  
 public:  
  static void setStereoAbsoluteAdjustments(SoState * state, SbBool absolute);
  static bool isStereoAbsoluteAdjustments(SoState * state);
 
  static void setStereoAdjustment(SoState * state, float stoffset);
 
  static void setBalanceAdjustment(SoState * state, float stbalance, SbBool stNearFrac = false);
 
  static void setInterEyeDistance(SoState * state, float ied);
    
  static void setReversedView(SoState * state, bool strev);
 
  static float getStereoAdjustment(SoState *state); 
  
  static float getBalanceAdjustment(SoState *state);
 
  static SbBool isBalanceAdjustmentNearFrac(SoState *state);
 
  static float getInterEyeDistance(SoState *state);
  
  static bool getReversedView(SoState *state);
  
  static void set(SoState *state, const SoCamera::StereoMode mode);
  
  // Returns the boolean that tells the camera to narrow or not the view volume
  //static const SbBool getNarrow(SoState *state);
  
  static SoCamera::StereoMode getStereoMode(SoState *state);
  
  static SoStereoElement *getInstance(const SoState *state, SbBool &elemIsSet);
 
private:
 
  virtual void init(SoState *state);
 
  virtual SbBool matches(const SoElement* elt) const;
 
  virtual SoElement* copyMatchInfo() const;
 
 private:
   // Initializes the SoStereoElement class
  static void initClass();
  static void exitClass();
 
private:
  
  SoCamera::StereoMode stereoMode;
  SbBool stereoAbsoluteAdjustments;
  float stereoOffset;
  bool stereoNearFrac;
  float stereoBalance;
  float interEyeDistance;
  bool reversed;
  SbBool isSet;
  
  virtual ~SoStereoElement();
 
  friend class SoGuiRenderArea;
  friend class SoBaseStereo;
  friend class SoStereoCamera;
};
#endif /* _SO_STEREO_ELEMENT */