TRecMdcTrack.cxx

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#include "RootEventData/TRecMdcTrack.h"
#include <cmath>
 
ClassImp( TRecMdcTrack );
 
//************************************************
//
TRecMdcTrack::TRecMdcTrack() { Clear(); }
//************************************************
//
TRecMdcTrack::~TRecMdcTrack() { Clear(); }
 
Int_t TRecMdcTrack::charge() const {
  Int_t    charge;
  Double_t temp = m_helix[2];
  if ( temp > 0.0000000001 ) charge = 1;
  else if ( temp < -0.0000000001 ) charge = -1;
  else charge = 0;
  return charge;
}
 
Double_t TRecMdcTrack::x() const { return m_helix[0] * cos( m_helix[1] ); }
 
Double_t TRecMdcTrack::y() const { return m_helix[0] * sin( m_helix[1] ); }
 
Double_t TRecMdcTrack::z() const { return m_helix[3]; }
 
Double_t TRecMdcTrack::r() const { return sqrt( x() * x() + y() * y() ); }
 
Double_t TRecMdcTrack::pxy() const {
  if ( m_helix[2] != 0 ) return 1. / fabs( m_helix[2] );
  else return 0.;
}
 
Double_t TRecMdcTrack::px() const { return pxy() * ( -sin( m_helix[1] ) ); }
 
Double_t TRecMdcTrack::py() const { return pxy() * cos( m_helix[1] ); }
 
Double_t TRecMdcTrack::pz() const { return pxy() * m_helix[4]; }
 
Double_t TRecMdcTrack::p() const { return sqrt( px() * px() + py() * py() + pz() * pz() ); }
 
Double_t TRecMdcTrack::theta() const { return acos( pz() / p() ); }
 
Double_t TRecMdcTrack::phi() const { return atan2( py(), px() ); }