Inventor/nodes/SoOcclusionCulling.h

Go to the documentation of this file.

/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
 ***              AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT.                     ***
 ***                                                                                ***
 ***  REPRODUCTION, DISCLOSURE,  OR USE,  IN WHOLE OR IN PART,  OTHER THAN AS       ***
 ***  SPECIFIED  IN THE LICENSE ARE  NOT TO BE  UNDERTAKEN  EXCEPT WITH PRIOR       ***
 ***  WRITTEN AUTHORIZATION OF FEI S.A.S.                                           ***
 ***                                                                                ***
 ***                        RESTRICTED RIGHTS LEGEND                                ***
 ***  USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS      ***
 ***  WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN      ***
 ***  SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT      ***
 ***  CLAUSE  AT FAR 52.227-19  OR SUBPARAGRAPH  (C)(1)(II)  OF  THE RIGHTS IN      ***
 ***  TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013.             ***
 ***                                                                                ***
 ***                   COPYRIGHT (C) 1996-2020 BY FEI S.A.S,                        ***
 ***                        BORDEAUX, FRANCE                                        ***
 ***                      ALL RIGHTS RESERVED                                       ***
**=======================================================================*/
/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
/*==============================================================================
*   Classes     : SoOcclusionCulling
*   Author(s)   : Jerome Hummel
*   Date        : 4-18-2002
*==============================================================================
*
* Description : Inserted at the top of a scene graph,
* this node will perform an occlusion culling test.
*
*============================================================================*/

#ifndef SO_OCC_CULLING_H
#define SO_OCC_CULLING_H

#include <Inventor/nodes/SoRenderList.h>
#include <Inventor/actions/SoGetBoundingBoxAction.h>



class SoOcclusionCulling;

typedef     SoDEPRECATED void SoOcclusionReportCB(SoOcclusionCulling *,
                                 int numObj,
                                 int numRendered, 
                                 int numOccluders, 
                                 void *userData);
class SoDEPRECATED SoOcclusionCulling : public SoRenderList
{
  SO_NODE_HEADER(SoOcclusionCulling); 

 public:

     SoOcclusionCulling();

  static void setReportCB(SoOcclusionReportCB *func, void *data);
  
  void setThreshold(unsigned int threshold);
  
  unsigned int getThreshold(void);
  
  void setApproximateOcclusion(SbBool enable);
  
  SbBool isApproximateOcclusion(void);

  void setNumFrame(unsigned int num);
  
  unsigned int getNumFrame(void);
  
  void setUseHPExtension(SbBool enable);

  
  SbBool getUseHPExtension(void)
    { return useHP; }

 private:
  // These implement supported actions
  virtual void  getBoundingBox(SoGetBoundingBoxAction *action);
  virtual void  rayPick(SoRayPickAction *action);
  virtual void  getPrimitiveCount(SoGetPrimitiveCountAction *action);
  virtual void  GLRenderBelowPath(SoGLRenderAction *action);
  
 private:
  static void initClass();
  static void exitClass();
 
 private:
  // Generic traversal of children, handles scene graph as if
  // this was just a SoSeparator node
  virtual void  doStandardTraversal(SoAction *action);
  
  // Spatial traversal of children
  virtual void  doSpatialTraversal(SoAction *action);
  
  virtual ~SoOcclusionCulling();
  
  int renderTransObjs(SoAction* action, SoRenderObjectList* vTransObject, SbBool);
  int occlusionTestNV(SoAction*, SoRenderObjectList *list, SoRenderObjectList *transparencyList, SbBool);
  int occlusionTestHP(SoAction*, SoRenderObjectList *list, SoRenderObjectList *transparencyList, SbBool, int startIndex);
  
  private :
    void commonConstructor();
  
  static SoOcclusionReportCB* userReportCB;
  static void *userData;
  
  unsigned int pixelThreshold;
  unsigned int frameCounter;
  unsigned int numFrame; // all objects are retested after numFrame frames
  SbBool approximateOcclusion;
  SbBool useHP;
  SbBool turnedOff;
  SbBool notSorted; 
};

#endif

---

Open Inventor Toolkit reference manual, generated on 12 Feb 2024
Copyright © Thermo Fisher Scientific All rights reserved. http://www.openinventor.com/