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// File: Toffz_helix.h                             //
//                                                 //
// A class derived from Tof_helix for associating  //
// a given CDC (fzisan) track (helix) to a TOF hit //
//                                                 //
//                     S.Behari 13th Jan. 2000     //
//
#ifndef _TOFFZ_HELIX_Flag_
#define _TOFFZ_HELIX_Flag_
#include "GaudiKernel/Algorithm.h"
#include "CLHEP/Geometry/Point3D.h"


#include "EsTimeAlg/Tof_helix.h" 

class TofFz_helix   {
      
  // Provides a candidate tof hit associated 
  // to a given cdc (fzisan) track.
  public:
    TofFz_helix  (void);
    ~TofFz_helix (void){};

 // information for hit tof candidate. 
    int    Tofid;       // tof counter id 
    int    Etfid;       // tof counter id for the mrpc
    double  R_tof;      // radius of tof cylinder   
    double  Fi_tof;     // azmuthal angle of the hit on the tof cylinder.
    double  W_tof;      // dist from the right corner of the cntr / width.
    double  Pathl;      // path lengh from ip to tof front  
    double  Path_tof;   // path length in tof  
    double  Path_etf;   // path length from ip to mrpc tof front  
    double  Z_tof;      // z on tof counter 
    double  Z_etf;      // z on mrpc tof counter 
 
 // information for mdc trcak. 
    double  Dr,Phi0,Kappa,Dz,Tanl; // helix parameters
    int    NTrk;       // tot number of mdc tracks  
    double  Phi1;  // phi on the tof cylinder  
    double  r_endtof;                    // hits on TOF Endcap ,sqrt(x*x+y*y)
    double  r_etf;                       // hits on MRPC TOF Endcap ,sqrt(x*x+y*y)

    int TofFz_Get (double, int,double[]);          // get tof hit for 
                                         // track id
    // Debug option ([0]:None, !0:Debug)
    void debugOpt(int deb) {
      _debug = deb;
    }
    // Set path length cut value
    void pathlCut(double pathl_max) {
      _pathl_cut = pathl_max;
    }
    // Set Z_tof cut values
    void ztofCut(double ztof_min, double ztof_max) {
      _ztof_cutm = ztof_min;
      _ztof_cutx = ztof_max;
    }

  private:
    double  piby1, pi2, piby44,piby24,piby18;
    int    _debug;                       // debug if >0 
    double  _pathl_cut;                   // path length max.
    double  _ztof_cutm,_ztof_cutx;        // Z_tof min/max
   
};

#endif /* _TOFFZ_HELIX_Flag_ */

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