Reconstruction/KalFitAlg/KalFitAlg-00-15-08/KalFitAlg/KalFitElement.h

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//-----------------------------------------------------------------------
// File from KalFit module
//
// Filename : KalFitElement.h
//------------------------------------------------------------------------
// Description :
// Element is a base class which represents an element of detector
//
//------------------------------------------------------------------------
// Modif :
//------------------------------------------------------------------------
#ifndef _DEFINE_ELEMENT_H_
#define _DEFINE_ELEMENT_H_
 
#include "KalFitAlg/lpav/Lpav.h" // Use for first circle fit....
 
class KalFitMaterial;
class KalFitTrack;
 
 
/**
 * Element is a base class which represents an element of detector 
 */
class KalFitElement {
protected:
 
  /// Material of this element
  const KalFitMaterial* material_;
 
  /// Flags
  static int muls_;
  static int loss_;
 
public:
  /// Constructor
  KalFitElement(const KalFitMaterial* material)
    : material_(material)
  {}
  
  /// Destructor
  virtual ~KalFitElement(){}
 
  /// Find intersection with Helix
  virtual double intersect(const KalFitTrack& track,
               HepPoint3D& x) const = 0;
 
 
  virtual double intersect(const KalFitTrack& track,
                           HepPoint3D& x, const HepPoint3D& point) const = 0;    
 
  //Attention!!! [ri,ro] must be within [ri_,ro_]
  virtual double intersect(const KalFitTrack& track, HepPoint3D& x, const double ri, const double ro) const=0;
      
  /// Return Material of which Element is made
  const KalFitMaterial& material(void) const
  {
    return *material_;
  }
 
  /// Return distance in r-phi plane
  virtual double radius(void) const = 0;
 
  /// Update track according the material properties of the current element
  virtual void updateTrack(KalFitTrack& track, int index);
 
  virtual void updateTrack(KalFitTrack& track, int index, const double ri, const double ro);  //added hy Huang Zhen
 
  virtual void updateTrack_rphi(KalFitTrack& track, int index);
 
  virtual void updateTrack_alreadyfound(KalFitTrack& track, 
                    int index);
  /// 
  virtual void asso_rphi(Lpav& circ, KalFitTrack& track);
  virtual void asso_rphi(KalFitTrack& track);
 
  /// Operator
  bool operator < (const KalFitElement& a) const
  {
    return radius() < a.radius();
  }
 
  static int muls(void);
  static int loss(void);
 
  static void muls(int i);
  static void loss(int i);
};
 
#endif