SoScale2UniformDragger.h

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**=======================================================================*/
/*=======================================================================
** Author      : Paul Isaacs (MMM yyyy)
** Modified by : Howard Look (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_SCALE_2_UNIFORM_DRAGGER_
#define  _SO_SCALE_2_UNIFORM_DRAGGER_
 
#include <Inventor/SbLinear.h>
#include <Inventor/draggers/SoDragger.h>
#include <Inventor/fields/SoSFVec3f.h>
#include <Inventor/sensors/SoSensor.h>
 
class SbDict;
class SbLineProjector;
class SoFieldSensor;
 
class  SoScale2UniformDragger : public SoDragger
{
  SO_KIT_HEADER(SoScale2UniformDragger);
 
  SO_KIT_CATALOG_ENTRY_HEADER(scalerSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(scaler);
  SO_KIT_CATALOG_ENTRY_HEADER(scalerActive);
  SO_KIT_CATALOG_ENTRY_HEADER(feedbackSwitch);
  SO_KIT_CATALOG_ENTRY_HEADER(feedback);
  SO_KIT_CATALOG_ENTRY_HEADER(feedbackActive);
 
 public:
  
  SoScale2UniformDragger();
 
  SoSFVec3f scaleFactor;
 
 private:
  static void initClass();  // initialize the class
  static void exitClass();
 
 private:
 
  SbVec3f           closestPtOfZeroScale; // used during interaction
  SbLineProjector   *lineProj;     // projector for  scaling
 
  static void startCB( void *, SoDragger * );
  static void motionCB( void *, SoDragger * );
  static void finishCB( void *, SoDragger * );
 
  SoFieldSensor *fieldSensor;
  static void fieldSensorCB( void *, SoSensor * );
  static void valueChangedCB( void *, SoDragger * );
 
  void dragStart();
  void drag();
  void dragFinish();
 
  // detach/attach any sensors, callbacks, and/or field connections.
  // Called by:            start/end of SoBaseKit::readInstance
  // and on new copy by:   start/end of SoBaseKit::copy.
  // Classes that redefine must call setUpConnections(TRUE,TRUE) 
  // at end of constructor.
  // Returns the state of the node when this was called.
  virtual SbBool setUpConnections( SbBool onOff, SbBool doItAlways = FALSE );
 
  virtual ~SoScale2UniformDragger();
 
 private:
  static const char geomBuffer[];
};    
 
#endif  /* _SO_SCALE_2_UNIFORM_DRAGGER_ */