ERmuSiPoint.cxx

// -------------------------------------------------------------------------
// -----                      ERmuSiPoint source file                -----
// -------------------------------------------------------------------------

#include "ERmuSiPoint.h"

#include "TMath.h"

#include<iostream>
// -----   Default constructor   -------------------------------------------
ERmuSiPoint::ERmuSiPoint()
  : FairMCPoint(),
    fX_out(0.), fY_out(0.), fZ_out(0.),
    fPx_out(0.), fPy_out(0.), fPz_out(0.)
{
}
// -------------------------------------------------------------------------



// -----   Standard constructor   ------------------------------------------
ERmuSiPoint::ERmuSiPoint(Int_t index, Int_t eventID, Int_t trackID,
          Int_t mot0trackID,
          Double_t mass,
          TVector3 posIn,
          TVector3 posOut, TVector3 momIn, TVector3 momOut,
          Double_t tof, Double_t length, Double_t eLoss, Int_t station)
  : FairMCPoint(trackID, -1., posIn, momIn, tof, length, eLoss),
    fIndex(index), fEventID(eventID),
    fX_out(posOut.X()), fY_out(posOut.Y()), fZ_out(posOut.Z()),
    fPx_out(momOut.X()), fPy_out(momOut.Y()), fPz_out(momOut.Z()),
    fStation(station)
{

  fPAngle = TMath::ACos((fPx_out*fPx + fPy_out*fPy+fPz_out*fPz)/TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz)/
            TMath::Sqrt(fPx_out*fPx_out+fPy_out*fPy_out+fPz_out*fPz_out));
}
// -------------------------------------------------------------------------



// -------------------------------------------------------------------------
ERmuSiPoint::ERmuSiPoint(const ERmuSiPoint& right)
  : FairMCPoint(right),
    fIndex(right.fIndex),fX_out(right.fX_out), fY_out(right.fY_out), fZ_out(right.fZ_out),
    fPx_out(right.fPx_out), fPy_out(right.fPy_out), fPz_out(right.fPz_out),
    fStation(right.fStation),fPAngle(right.fPAngle)
{
}
// -------------------------------------------------------------------------



// -----   Destructor   ----------------------------------------------------
ERmuSiPoint::~ERmuSiPoint()
{
}
// -------------------------------------------------------------------------



// -----   Public method Print   -------------------------------------------
void ERmuSiPoint::Print(const Option_t* opt /* = 0*/) const
{
  std::cout << "-I- ERmuSiPoint: track " << fTrackID << " mother track = " << fMot0TrackID << std::endl;
  std::cout << "    Position (" << fX << ", " << fY << ", " << fZ << ") cm" << std::endl;
  std::cout << "    Momentum (" << fPx << ", " << fPy << ", " << fPz << ") GeV" << std::endl;
  std::cout << "    Time " << fTime << " ns,  Length " << fLength << " cm" << std::endl;
  std::cout << "    Energy loss " << fELoss << " keV "<< std::endl;
}
// -------------------------------------------------------------------------



// -----   Point x coordinate from linear extrapolation   ------------------
Double_t ERmuSiPoint::GetX(Double_t z) const
{
  //  cout << fZ << " " << z << " " << fZ_out << endl;
  if ( (fZ_out-z)*(fZ-z) >= 0. ) return (fX_out+fX)/2.;
  Double_t dz = fZ_out - fZ;
  return ( fX + (z-fZ) / dz * (fX_out-fX) );
}
// -------------------------------------------------------------------------



// -----   Point y coordinate from linear extrapolation   ------------------
Double_t ERmuSiPoint::GetY(Double_t z) const
{
  if ( (fZ_out-z)*(fZ-z) >= 0. ) return (fY_out+fY)/2.;
  Double_t dz = fZ_out - fZ;
  //  if ( TMath::Abs(dz) < 1.e-3 ) return (fY_out+fY)/2.;
  return ( fY + (z-fZ) / dz * (fY_out-fY) );
}
// -------------------------------------------------------------------------



// -----   Public method IsUsable   ----------------------------------------
Bool_t ERmuSiPoint::IsUsable() const
{
  Double_t dz = fZ_out - fZ;
  if ( TMath::Abs(dz) < 1.e-4 ) return kFALSE;
  return kTRUE;
}
// -------------------------------------------------------------------------



ClassImp(ERmuSiPoint)