SoROIManip.h

/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Author      : P. ESTRADE (Jul 2002)
** Modified by : T.DUFOUR (MMM yyyy)
**=======================================================================*/
 
/* include files */
#ifndef  _SO_ROI_MANIP_
#define  _SO_ROI_MANIP_
 
#include <Inventor/draggers/SoDragger.h>
#include <LDM/nodes/SoROI.h>
 
class SoOneShotSensor;
class SoState;
class SoCallback;
 
/*----------------------------------------------------------------------------*/
 
class  SoROIManip : public SoROI {
  
  SO_NODE_HEADER(SoROIManip) ;
  
public:
  SoROIManip() ;
  
  // Fields
  SoSFBool boxOn;
  
  SoSFBool constrained;
 
  SoDragger *getDragger() ;
  
  SbBool replaceNode(SoPath *p) ;
  
  SbBool replaceManip(SoPath *p, SoROI *newOne) const;
  
private:
  // These functions implement all actions for this manip.
  // They first traverse the children, then use the 
  // SoROI version of the actions. They traverse first 
  // so that the SoROI will affect objects which 
  // follow it in the tree, but not the dragger-child.
  virtual void doAction(SoAction *action);
  virtual void callback(SoCallbackAction *action);
  virtual void GLRender(SoGLRenderAction *action);
  virtual void getBoundingBox(SoGetBoundingBoxAction *action);
  virtual void getMatrix(SoGetMatrixAction *action);
  virtual void handleEvent(SoHandleEventAction *action);
  virtual void pick(SoPickAction *action);
  virtual void search(SoSearchAction *action);
  virtual void write( SoWriteAction *action );
  
private:
  // call this after SoInteraction::init();
  static void initClass();
  static void exitClass();
 
  virtual SoChildList *getChildren() const;
  
private:
  // When the dragger moves, this interprets the fields modifications 
  // of the dragger and sets the fields of this SoROI accordingly
  static void valueChangedCB(void *,SoDragger *);
  
  // When one of the field of this node changes, moves the
  // child-dragger to a new location, if necessary.
  SoFieldSensor *m_boxOnSensor;
  SoFieldSensor *m_boxFieldSensor;
  SoFieldSensor *m_subVolumeFieldSensor;
  SoFieldSensor *m_relativeFieldSensor; 
  SoOneShotSensor *m_wasInitSensor; 
  
  static void fieldSensorCB(void *, SoSensor *);
  static void oneShotSensorCB(void *, SoSensor *);
  
  // Establishes the given dragger as the new child-dragger
  void setDragger(SoDragger *newDragger);
  
  // The hidden children.
  SoChildList *m_children;
  virtual SbBool readInstance(SoInput *in, unsigned short flags);
  virtual SbBool readChildren(SoInput *in);
  
  // Destructor
  virtual ~SoROIManip();
  
private:
  SbVec3i32 m_dimension;
  SbBox3f m_size;
  SbBool  m_init;
  SbVec3i32 m_boxmin, m_boxmax;
 
  SoCallback* m_dataSetMatrixCBNode;
  bool m_useDataSetMatrix;
  SbMatrix m_savedDataSetMatrix;
  
  static void dataToGeometry( const SbVec3i32 &, const SbVec3i32 &, SbVec3f &, SbVec3f &, const SoROIManip * );
  static void geometryToData( const SbVec3f &, const SbVec3f &, SbVec3i32 &, SbVec3i32 &, const SoROIManip *, bool );
 
  int getNumChildren() const { return (m_children->getLength()); }
  void initBox(SoAction* action);
 
  bool hasVolumeDataSizeChanged(SoState *state);
 
  bool pushDataSetModelMatrix(SoAction* action, SoNode* node);
} ;
/*----------------------------------------------------------------------------*/
 
#endif /* _SO_ROI_MANIP_  */