Inventor/nodes/SoValueOrdering.h

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/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
/*---------------------------------------------------------------------
 *  Header file for "SoValueOrdering", 
 *   SoRenderList-derived group node.
 *
 *  Created: bga 31-March-97
 *  Modified:
 *------------------------------------------------------------*/


#ifndef _SO_VALUE_ORDERING_HH
#define _SO_VALUE_ORDERING_HH 1

#include <Inventor/fields/SoSFBool.h>
#include <Inventor/nodes/SoRenderList.h>

class SoAlarmSensor;
class SoIdleSensor;

#ifndef HIDDEN_FROM_DOC
// Extend the SoRenderObject to contain the data we want to store
class SoDEPRECATED SoValueRenderObject : public SoRenderObject{
 public:
  SoValueRenderObject(const SoPath* p) 
    : SoRenderObject(p) 
    { minTris = 0; numTris = 0; substitute = NULL; };
  
  virtual ~SoValueRenderObject() { 
    if (substitute!=NULL) { substitute->unref(); substitute = NULL; } };
  SbVec3f center;
  float   rad_sq;
  SbBox3f bbox;
  int32_t numTris, minTris;
  float   renderValue;
  SoNode  *substitute;
};
#endif // HIDDEN_FROM_DOC
class SoDEPRECATED SoValueOrdering : public SoRenderList{

  SO_NODE_HEADER(SoValueOrdering);

 public:
     SoValueOrdering();

     SoValueOrdering(int numChildren);
   
  // Fields
  SoSFBool dropCulling;
  SoSFUInt32 dropScreenArea;
  SoSFBool adjustDecimation;
  SoSFBool boundingBoxSubstitutes;
  SoSFBool decimateSubstitutes;
  SoSFBool lowValueCulling;
    
 private:
  // These implement supported actions
  virtual void  getBoundingBox(SoGetBoundingBoxAction *action);
  virtual void  GLRenderBelowPath(SoGLRenderAction *action);
  virtual void  pick(SoPickAction *action);
  virtual void  getPrimitiveCount(SoGetPrimitiveCountAction *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 callbacks for when changes are made to the RenderObject list.
  virtual SoRenderObject *createRenderObject(const SoPath *path);
  virtual void removingRenderObject(SoRenderObject *);
  virtual SbBool isFieldChangeImportant(SoNode *triggerNode,
                                        SoField* triggerField);
  virtual void renderObjectChanged(SoRenderObject *);
  virtual void ourFieldChanged(SoField *);

 private:
  // Destructor
  virtual ~SoValueOrdering();

 private:
  // Common code for the two constructors:
  void commonConstructor();
 
  SoGetBoundingBoxAction *bbAction;
  SoGetPrimitiveCountAction *countAction;
    
  SbPList changeQueue;
  void insertInChangedQueue(void*);
  void updateChangedQueue();
  void updateRenderObject(SoValueRenderObject*);
    
  int32_t totalTris;
  double maxError;
  SbIntList needsDecimating;
  SoAlarmSensor *decimateIdle;
  static void decimateIdleCB(void* data, SoSensor*) {
    ((SoValueOrdering*)data)->decimateMaxError(); };
  void decimateMaxError();
    
};

#endif

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Open Inventor Toolkit reference manual, generated on 12 Feb 2024
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