/** CbmMuchPoint.cxx
 *
 * @author  M.Ryzhinskiy <m.ryzhinskiy@gsi.de>
 * @version 1.0
 * @since   21.03.07
 * 
 *  Class for Monte Carlo points in MUon CHambers detector
 *
 */

#include "CbmMuchPoint.h"

#include <iostream>

using std::cout;
using std::endl;

// -----   Default constructor   -------------------------------------------
CbmMuchPoint::CbmMuchPoint() : FairMCPoint() {
  fX_out      = fY_out  = fZ_out  = 0.;
  fPx_out     = fPy_out = fPz_out = 0.;
}
// -------------------------------------------------------------------------



// -----   Standard constructor   ------------------------------------------
CbmMuchPoint::CbmMuchPoint(Int_t trackID, Int_t detID, TVector3 posIn, 
			   TVector3 posOut, TVector3 momIn, TVector3 momOut,
			   Double_t tof, Double_t length, Double_t eLoss) 
  : FairMCPoint(trackID, detID, posIn, momIn, tof, length, eLoss) {
  fX_out  = posOut.X();
  fY_out  = posOut.Y();
  fZ_out  = posOut.Z();
  fPx_out = momOut.Px();
  fPy_out = momOut.Py();
  fPz_out = momOut.Pz();
}
// -------------------------------------------------------------------------



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




// -----   Public method Print   -------------------------------------------
void CbmMuchPoint::Print(const Option_t* opt) const {
  cout << "-I- CbmMuchPoint: MUCH Point for track " << fTrackID 
       << " in detector " << fDetectorID << endl;
  cout << "    Position (" << fX << ", " << fY << ", " << fZ
       << ") cm" << endl;
  cout << "    Momentum (" << fPx << ", " << fPy << ", " << fPz
       << ") GeV" << endl;
  cout << "    Time " << fTime << " ns,  Length " << fLength 
       << " cm,  Energy loss " << fELoss*1.0e06 << " keV" << endl;
}
// -------------------------------------------------------------------------



// -----   Point x coordinate from linear extrapolation   ------------------
Double_t CbmMuchPoint::GetX(Double_t z) const {
  Double_t dz = fZ_out - fZ;
  if ( TMath::Abs(dz) < 1.e-3 ) return (fX_out+fX)/2.;
  return ( fX + (z-fZ) / dz * (fX_out-fX) );
}
// -------------------------------------------------------------------------



// -----   Point y coordinate from linear extrapolation   ------------------
Double_t CbmMuchPoint::GetY(Double_t z) const {
  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 CbmMuchPoint::IsUsable() const {
  Double_t dz = fZ_out - fZ;
  if ( TMath::Abs(dz) < 1.e-4 ) return kFALSE;
  return kTRUE;
}
// -------------------------------------------------------------------------


ClassImp(CbmMuchPoint)