MUON/AliMUONRecoTrack.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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   6  *                                                                        *
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  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /* $Id$ */
  17
  18 //Authors: Mihaela Gheata, Andrei Gheata 09/10/00
  19 ////////////////////////////////////////////////////////////////////
  20 //                                                                //
  21 // AliMUONRecoTrack                                               //
  22 //                                                                //
  23 // This class represents a reconstructed muon track               //
  24 // in the tree of reconstructed events.                           //
  25 //                                                                //
  26 ////////////////////////////////////////////////////////////////////
  27
  28 #include <Riostream.h>
  29
  30 #include "AliMUONRecoTrack.h"
  31
  32 ClassImp(AliMUONRecoTrack)
  33
  34 //-------------------------------------------------------------------
  35 AliMUONRecoTrack::AliMUONRecoTrack(Bool_t active)
  36   : TObject()
  37 {
  38 //Constructor of AliMUONRecoTrack
  39    fSign  = 0;
  40    fZvr   = 0.0;
  41    fChi2r = 0.0;
  42    if (active) {
  43         for (Int_t axis=0; axis<3; axis++) {
  44         fPr[axis] = 0.0;
  45         }
  46         for (Int_t chamber=0; chamber<10; chamber++) {
  47         fPosX[chamber] = 0.0;
  48         fPosY[chamber] = 0.0;
  49         fPosZ[chamber] = 0.0;
  50         }
  51    }
  52 }
  53
  54 //-------------------------------------------------------------------
  55 Double_t AliMUONRecoTrack::Phi() const
  56 {
  57 // Return trach phi angle
  58         return TMath::ATan2(fPr[2], fPr[1]);
  59 }
  60
  61 //-------------------------------------------------------------------
  62 Double_t AliMUONRecoTrack::Theta() const
  63 {
  64 // Return trach theta angle
  65    return TMath::ACos(fPr[2] / P());
  66 }
  67
  68 //-------------------------------------------------------------------
  69 void AliMUONRecoTrack::SetMomReconstr(Double_t px, Double_t py, Double_t pz)
  70 {
  71 // Set the track reconstructed momentum
  72    fPr[0] = px;
  73    fPr[1] = py;
  74    fPr[2] = pz;
  75 }
  76
  77 //-------------------------------------------------------------------
  78 void AliMUONRecoTrack::SetHitPosition(Int_t chamber, Double_t x, Double_t y, Double_t z)
  79 {
  80 // Set hit coordinates in chamber[0..9]
  81    fPosX[chamber] = x;
  82    fPosY[chamber] = y;
  83    fPosZ[chamber] = z;
  84 }
  85
  86 //-------------------------------------------------------------------
  87 void AliMUONRecoTrack::TrackInfo() const
  88 {
  89 // Prints momentum info for this track
  90    cout << "Px=" << GetMomReconstr(0) << " Py=" << GetMomReconstr(1) <<
  91           " Pz=" << GetMomReconstr(2) << " P=" << P() << endl;
  92 }