Emc_helix.h

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/////////////////////////////////////////////////////
// File: Emc_helix.h                               //
//                                                 //
// A class  for associating a given MDC (fzisan)   //
//  track (helix) to a EMC hit                     //
//                                                 //
//                     S.Behari 13th Jan. 2000     //
/////////////////////////////////////////////////////
//
#ifndef _EMC_HELIX_Flag_
#define _EMC_HELIX_Flag_
#include "CLHEP/Geometry/Point3D.h"
#include "GaudiKernel/Algorithm.h"
 
class Emc_helix {
 
  // Provides a candidate emc hit associated
  // to a given mdc (fzisan) track.
public:
  Emc_helix( void );
  ~Emc_helix( void ){};
 
  // information for hit emc candidate.
 
  double R_emc;     // radius of emc cylinder
  double Fi_emc;    // azmuthal angle of the hit on the emc cylinder.
  double W_emc;     // dist from the right corner of the cntr / width.
  double Z_emc;     // z on emc counter
  double theta_emc; // theta ,phi in  the crossing plot
  double phi_emc;
 
  // information for mdc trcak.
  double Dr, Phi0, Kappa, Dz, Tanl; // helix parameters
  int    NTrk;                      // tot number of mdc tracks
  double Phi1;                      // phi on the emc cylinder
 
  int Emc_Get( double, int, double[] ); // get emc  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_emc cut values
  void zemcCut( double zemc_min, double zemc_max ) {
    _zemc_cutm = zemc_min;
    _zemc_cutx = zemc_max;
  }
 
private:
  double piby1, pi2, piby44;
  int    _debug;                 // debug if >0
  double _pathl_cut;             // path length max.
  double _zemc_cutm, _zemc_cutx; // Z_emc min/max
};
 
#endif /* _EMC_HELIX_Flag_ */