PoCircleThreePoints.h

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/*=======================================================================
** Author      : VSG (MMM YYYY)
**=======================================================================*/
 
#ifndef  _PO_CIRCLE_THREE_POINTS_
#define  _PO_CIRCLE_THREE_POINTS_
 
#include <MeshViz/graph/PoCircle.h>
#include <Inventor/fields/SoSFVec2f.h>
#include <Inventor/fields/SoSFFloat.h>
 
class  PoCircleThreePoints : public PoCircle {
 
  SO_KIT_HEADER(PoCircleThreePoints) ;
 
 
 public:
 
  /* Fields */
 
  SoSFVec2f p ;
 
  SoSFVec2f q ;
 
  SoSFVec2f r ;
 
 
 
  /* Methods */
 
  PoCircleThreePoints()
    { init(SbVec2f(1.0, 0.0), SbVec2f(0.0, 1.0), SbVec2f(-1, 0.)) ; }
 
  PoCircleThreePoints(const SbVec2f &_p, const SbVec2f &_q, const SbVec2f &_r)
    { init(_p, _q, _r) ; }
 
  virtual void rebuild() ;
 
  /*----------------------------------------------------------------------------*/
 private:
  static void initClass() ;
    static void exitClass() ;
 
 private:
  // Methods
  // Destructor
  virtual ~PoCircleThreePoints() ;
  virtual SbBool setUpConnections(SbBool onOff, SbBool doItAlways = FALSE) ;
  virtual void   setDefaultOnNonWritingFields() ;
  
 private:
  // Init method
 
  void init(const SbVec2f &p, const SbVec2f &q, const SbVec2f &r) ;
 
  // Compute circle center from three points p1, p2 and p3
  SbBool computeCircleCenter(const SbVec2f &p1, const SbVec2f &p2,
                             const SbVec2f &p3, SbVec2f &center) ;
  // Sensors
  FieldSensorList fieldSensorList ;
  
  // List of fields defined in this class
  SoFieldList     fieldList ;
 
} ;
 
/*----------------------------------------------------------------------------*/
 
#endif /* _PO_CIRCLE_THREE_POINTS_  */