SolidViz/nodes/SoCSGGroup.h

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/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
 ***              AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT.                     ***
 ***                                                                                ***
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 ***  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      ***
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 ***                   COPYRIGHT (C) 1996-2020 BY FEI S.A.S,                        ***
 ***                        BORDEAUX, FRANCE                                        ***
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**=======================================================================*/
/*=======================================================================
** Author      : P. ESTRADE (Jan 2001)
** Modified by : R.ALBOU (MMM yyyy)
**=======================================================================*/
#ifndef  _SO_CSG_GROUP_
#define  _SO_CSG_GROUP_

#include <SolidViz/SoSolidViz.h>

#include <Inventor/fields/SoSFString.h>
#include <Inventor/nodes/SoGroup.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/SbViewportRegion.h>

#include <Inventor/sys/SoGLType.h>

class SoSeparator ;
class SoFieldSensor ;
class SoDEPRECATED SoCSGGroup : public SoGroup {
  SO_NODE_HEADER( SoCSGGroup );

 public:
  SoSFString      expression; 

  SoSFBool        isShapesBefore;

  SoSFBool        isActive ;

  SoSFBool    boundingBoxPruningEnabled ;

  SoCSGGroup();
  SoCSGGroup(int nChildren);

#ifndef HIDDEN_FROM_DOC
  // Return the geometric result of the CSG tree defined by the expression.
  SoNode* getGeometry() const ;
#endif

 private:
  // Implement actions
  virtual void GLRender(SoGLRenderAction *action);

  /*----------------------------------------------------------------------------*/

 private:
  static void initClass() ;
  static void exitClass() ;

 private:
  virtual ~SoCSGGroup();

 private:
  struct SoCSGProduct {
    int       targetPrim ;
    SbBool    frontFace ;
    int       whichSurface ;
    int       targetConvexity ;
    SbIntList trimmingPrims ;
    SbIntList isComplemented ;
  };

  SbBool            m_isShapesBefore ;
  SbBool            m_isReinterpretExpression;
  SbBool            m_shouldInvalidateCache ;
  GLuint            m_viewportRegion[4] ;
  SoFieldSensor    *m_expressionSensor, *m_isActiveSensor ;
  SoGLRenderAction *m_action;
  SoState          *m_state ;
  GLint             m_stenSize;
  int               m_numProducts;
  GLfloat          *m_depthResults;
  int               m_sCountMask;
  int               m_sPMask;
  int               m_sPShift;
  
  SoCSGProduct     *m_products;
  SbBox3f          *m_solidBBoxList ;
  
  uint64_t          m_lastNodeId ;

  // To read the expression !
  void interpretExpression( void );

  // Compute the bounding box of each solid.
  void computeSolidsBBox(void) ;

  // Prunes CSG products accoding to bbox pruning rules.
  void pruneCSGProducts(void) ;

#ifdef _WIN32
  HANDLE m_bufferRegionHandle;
#endif

 private:
  void drawFarRect(void);
  void redrawCSG(void);
  void saveDepth(void);
  SbBool markProductPixels(int product, int accumBit);
  void restoreDepth(void);
  SbBool drawProduct(int product, int accumBit);
  SbBool renderPrimDepths(const SoCSGProduct *p);
  SbBool trimWithPrimitive(int trimPrim, int isComplemented);
  void pushOrthoView(float left, float right, float bottom, float top,float znear, float zfar) ;
  void popView(void);
  void drawPrim(int i);
  void commontInit(void) ;

  static unsigned char countNeededBits(unsigned char byte) ;

  static void parseExpressionError(int number) ;
  static void isActiveSensorCB(void *data, SoSensor *) ;
  static void expressionSensorCB(void *data, SoSensor *) ;

};
/*----------------------------------------------------------------------------*/
#endif // _SO_CSG_GROUP_

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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