VZERO/VZERObase/AliVZEROLogicalSignal.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 //
  17 // Class AliVZEROLogicalSignal
  18 // ---------------------------
  19 // Describes a logical signal in the electronics.
  20 // Use it to generate observation windows
  21 // which are used by AliVZEROTriggerSimulator class
  22 //
  23
  24 #include "AliLog.h"
  25 #include "AliVZEROLogicalSignal.h"
  26
  27 ClassImp(AliVZEROLogicalSignal)
  28
  29 //_____________________________________________________________________________
  30 AliVZEROLogicalSignal::AliVZEROLogicalSignal() : TObject(), fStart(0.), fStop(0.)
  31 {
  32         // Default constructor
  33 }
  34 //_____________________________________________________________________________
  35 AliVZEROLogicalSignal::AliVZEROLogicalSignal(UShort_t profilClock, UInt_t delay) : TObject(), fStart(0.), fStop(0.)
  36 {
  37         // Constructor using the profilClock and delay parameters comming from the FEE
  38
  39         Bool_t word;
  40         Bool_t up=kFALSE;
  41         Bool_t down=kFALSE;
  42
  43         for(int i=0 ; i<5 ; i++) {
  44                 Int_t shift = (i<4) ? (3-i) : 4;
  45                 word = (profilClock >> shift) & 0x1;
  46                 if(word&&!up) {
  47                         fStart = 5. * (i + 1);
  48                         up = kTRUE;
  49                 }
  50                 if(!word&&up&&!down) {
  51                         fStop = 5. * (i + 1);
  52                         down = kTRUE;
  53                 }
  54         }
  55         if(!down) fStop = 30.;
  56
  57         fStart += delay*1e-2; // Add 10 ps par register unit
  58         fStop  += delay*1e-2;
  59 }
  60 //_____________________________________________________________________________
  61 AliVZEROLogicalSignal::AliVZEROLogicalSignal(const AliVZEROLogicalSignal &signal) :
  62         TObject(), fStart(signal.fStart),
  63         fStop(signal.fStop)
  64 {
  65         // Copy constructor
  66 }
  67
  68 //_____________________________________________________________________________
  69 AliVZEROLogicalSignal::~AliVZEROLogicalSignal(){
  70         // Destructor
  71 }
  72
  73 //_____________________________________________________________________________
  74 AliVZEROLogicalSignal& AliVZEROLogicalSignal::operator =
  75 (const AliVZEROLogicalSignal& signal)
  76 {
  77         // Operator =
  78         if(&signal == this) return *this;
  79         fStart = signal.fStart;
  80         fStop  = signal.fStop;
  81         return *this;
  82 }
  83
  84 //_____________________________________________________________________________
  85 AliVZEROLogicalSignal AliVZEROLogicalSignal::operator|(const AliVZEROLogicalSignal& signal) const
  86 {
  87         // Perform the Logical OR of two signals: C = A or B
  88         if((fStart>signal.fStop) || (signal.fStart>fStop))
  89                 AliError(Form("Both signal do not superpose in time.\n  Start(A) = %f Stop(A) = %f\n   Start(B) = %f Stop(B) = %f",fStart, fStop, signal.fStart,signal.fStop));
  90
  91         AliVZEROLogicalSignal result;
  92         if(fStart<signal.fStart) result.fStart = fStart;
  93         else result.fStart = signal.fStart;
  94
  95         if(fStop>signal.fStop) result.fStop = fStop;
  96         else result.fStop = signal.fStop;
  97
  98         return result;
  99 }
 100 //_____________________________________________________________________________
 101 AliVZEROLogicalSignal AliVZEROLogicalSignal::operator&(const AliVZEROLogicalSignal& signal) const
 102 {
 103         // Perform the Logical AND of two signals: C = A and B
 104         if((fStart>signal.fStop) || (signal.fStart>fStop))
 105                 AliError(Form("Both signal do not superpose in time.\n  Start(A) = %f Stop(A) = %f\n   Start(B) = %f Stop(B) = %f",fStart, fStop, signal.fStart,signal.fStop));
 106
 107         AliVZEROLogicalSignal result;
 108         if(fStart>signal.fStart) result.fStart = fStart;
 109         else result.fStart = signal.fStart;
 110
 111         if(fStop<signal.fStop) result.fStop = fStop;
 112         else result.fStop = signal.fStop;
 113
 114         return result;
 115 }
 116
 117 //_____________________________________________________________________________
 118 Bool_t AliVZEROLogicalSignal::IsInCoincidence(Float_t time) const
 119 {
 120         // Check if a signal arriving at the time "time" is in coincidence with the logical signal
 121         Bool_t result = kFALSE;
 122         if((time>fStart) && (time<fStop)) result = kTRUE;
 123         return result;
 124 }
 125