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[u/mrichter/AliRoot.git] / HMPID / AliHMPIDDigit.h
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d3da6dc4 1#ifndef AliHMPIDDigit_h
2#define AliHMPIDDigit_h
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
ea925242 6// Class of HMPID to manage digits ---> pads
1b10372c 7//.
8//.
9//.
ea925242 10
d3da6dc4 11#include <AliDigit.h> //base class
49dfd67a 12#include <AliRawReader.h>
13#include <AliLog.h>
ea925242 14#include "TMath.h" //Mathieson()
d3da6dc4 15#include <AliBitPacking.h> //Raw()
ae5a42aa 16#include "AliHMPIDParam.h"
d3da6dc4 17
d3da6dc4 18class TClonesArray; //Hit2Sdi()
3c6274c1 19
d3da6dc4 20class AliHMPIDDigit :public AliDigit //TObject-AliDigit-AliHMPIDDigit
21{
22public:
ae5a42aa 23
d3da6dc4 24//ctor&dtor
ae5a42aa 25 AliHMPIDDigit( ):AliDigit( ),fPad(AliHMPIDParam::Abs(-1,-1,-1,-1)),fQ(-1) {} //default ctor
1d4857c5 26 AliHMPIDDigit(Int_t pad,Int_t q,Int_t *t):AliDigit(t),fPad(pad ),fQ(q ) {} //digit ctor
27 AliHMPIDDigit(const AliHMPIDDigit &d ):AliDigit(d),fPad(d.fPad),fQ(d.fQ) {} //copy ctor
28 virtual ~AliHMPIDDigit() {} //dtor
d3da6dc4 29//framework part
30 Bool_t IsSortable ( )const{return kTRUE;} //provision to use TObject::Sort()
31 inline Int_t Compare (const TObject *pObj )const; //provision to use TObject::Sort()
d1bf51e1 32 void Draw (Option_t *opt="" ); //TObject::Draw() overloaded
d3da6dc4 33 void Print (Option_t *opt="" )const; //TObject::Print() overloaded
34//private part
ae5a42aa 35
1d4857c5 36 void AddTidOffset(Int_t offset ) {for (Int_t i=0; i<3; i++) if (fTracks[i]>0) fTracks[i]+=offset; } //needed for merging
ae5a42aa 37 Int_t Ch ( )const{return AliHMPIDParam::A2C(fPad); } //chamber number
38
39 Float_t LorsX ( )const{return AliHMPIDParam::LorsX(AliHMPIDParam::A2P(fPad),AliHMPIDParam::A2X(fPad)); } //center of the pad x, [cm]
40
41 Float_t LorsY ( )const{return AliHMPIDParam::LorsY(AliHMPIDParam::A2P(fPad),AliHMPIDParam::A2Y(fPad)); } //center of the pad y, [cm]
42//
c5c19d6a 43 inline Float_t IntMathieson(Float_t x,Float_t y )const; //Mathieson distribution
ae5a42aa 44 Int_t PadPcX ( )const{return AliHMPIDParam::A2X(fPad);} //pad pc x # 0..79
45 Int_t PadPcY ( )const{return AliHMPIDParam::A2Y(fPad);} //pad pc y # 0..47
46 Int_t PadChX ( )const{return (Pc()%2)*AliHMPIDParam::kPadPcX+PadPcX();} //pad ch x # 0..159
47 Int_t PadChY ( )const{return (Pc()/2)*AliHMPIDParam::kPadPcY+PadPcY();} //pad ch y # 0..143
d3da6dc4 48 Int_t Pad ( )const{return fPad;} //absolute id of this pad
ae5a42aa 49 Int_t Pc ( )const{return AliHMPIDParam::A2P(fPad);} //PC position number
da08475b 50 Float_t Q ( )const{return fQ;} //charge, [QDC]
1d4857c5 51 inline void Raw (UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const; //digit->(w32,ddl,r,d,a)
49dfd67a 52 inline Bool_t Raw (UInt_t w32,Int_t ddl,AliRawReader *pRR); //(w32,ddl)->digit
a0e5c1b9 53 inline void Raw (Int_t ddl,Int_t r,Int_t d,Int_t a); //raw->abs pad number
f3bae3e2 54 inline Bool_t Set (Int_t c,Int_t p,Int_t x,Int_t y,Int_t tid=0); //manual creation
55 void SetQ (Float_t q ) {fQ=q;} //manual creation
ae5a42aa 56 void SetNsig (Int_t sigmas ) {AliHMPIDParam::fgSigmas=sigmas;} //set n sigmas
1d4857c5 57 static void WriteRaw (TObjArray *pDigLst ); //write as raw stream
49dfd67a 58 enum EHMPIDRawError {
59 kInvalidRawDataWord = 1
60 };
ae5a42aa 61
c5c19d6a 62protected: //AliDigit has fTracks[3]
ae5a42aa 63
64
1b10372c 65 Int_t fPad; //absolute pad number
c5c19d6a 66 Float_t fQ; //QDC value, fractions are permitted for summable procedure
67 ClassDef(AliHMPIDDigit,4) //HMPID digit class
68};//class AliHMPIDDigit
cf7e313e 69
d3da6dc4 70//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ae5a42aa 71
d3da6dc4 72Int_t AliHMPIDDigit::Compare(const TObject *pObj) const
73{
74// Used in Sort() method to compare to objects. Note that abs pad structure is first x then y, hence will be sorted on column basis.
75// This feature is used in digitizer to facilitate finding of sdigits for the same pad since they all will come together after sorting.
76// Arguments: pObj - pointer to object to compare with
77// Retunrs: -1 if AbsPad less then in pObj, 1 if more and 0 if they are the same
78 if (fPad==((AliHMPIDDigit*)pObj)->Pad()) return 0;
79 else if(fPad >((AliHMPIDDigit*)pObj)->Pad()) return 1;
da08475b 80 else return -1;
d3da6dc4 81}
82//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ae5a42aa 83
c5c19d6a 84Float_t AliHMPIDDigit::IntMathieson(Float_t x,Float_t y)const
d3da6dc4 85{
c5c19d6a 86// Integration of Mathieson.
d3da6dc4 87// This is the answer to electrostatic problem of charge distrubution in MWPC described elsewhere. (NIM A370(1988)602-603)
88// Arguments: x,y- position of the center of Mathieson distribution
89// Returns: a charge fraction [0-1] imposed into the pad
0112d781 90 Float_t kK2=0.96242952, kSqrtK3 =0.77459667, kK4=0.37932926;
d3da6dc4 91
ae5a42aa 92 Float_t ux1=kSqrtK3*TMath::TanH(kK2*(x-LorsX()+0.5*AliHMPIDParam::SizePadX())/0.445);
93 Float_t ux2=kSqrtK3*TMath::TanH(kK2*(x-LorsX()-0.5*AliHMPIDParam::SizePadX())/0.445);
94 Float_t uy1=kSqrtK3*TMath::TanH(kK2*(y-LorsY()+0.5*AliHMPIDParam::SizePadY())/0.445);
95 Float_t uy2=kSqrtK3*TMath::TanH(kK2*(y-LorsY()-0.5*AliHMPIDParam::SizePadY())/0.445);
0112d781 96 return 4*kK4*(TMath::ATan(ux2)-TMath::ATan(ux1))*kK4*(TMath::ATan(uy2)-TMath::ATan(uy1));
d3da6dc4 97}
98//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1d4857c5 99void AliHMPIDDigit::Raw(UInt_t &w32,Int_t &ddl,Int_t &r,Int_t &d,Int_t &a)const
d3da6dc4 100{
101// Convert digit structure to raw word format
1d4857c5 102// Arguments: w32,ddl,r,d,a where to write the results
103// Returns: none
104 Int_t y2a[6]={5,3,1,0,2,4};
105
106 ddl=2*Ch()+Pc()%2; //DDL# 0..13
107 Int_t tmp=1+Pc()/2*8+PadPcY()/6; r=(Pc()%2)? 25-tmp:tmp; //row r=1..24
108 d=1+PadPcX()/8; //DILOGIC# 1..10
109 a=y2a[PadPcY()%6]+6*(PadPcX()%8); //ADDRESS 0..47
110
111 w32=0;
112 AliBitPacking::PackWord((UInt_t)fQ,w32, 0,11); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc bits (00..11) counts (0..4095)
113 AliBitPacking::PackWord( a ,w32,12,17); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC address bits (12..17) counts (0..47)
114 AliBitPacking::PackWord( d ,w32,18,21); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC number bits (18..21) counts (1..10)
115 AliBitPacking::PackWord( r ,w32,22,26); // Row number bits (22..26) counts (1..24)
d3da6dc4 116}
117//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
49dfd67a 118Bool_t AliHMPIDDigit::Raw(UInt_t w32,Int_t ddl, AliRawReader *pRR)
d3da6dc4 119{
120// Converts a given raw data word to a digit
121// Arguments: w32 - 32 bits raw data word
122// ddl - DDL idx 0 1 2 3 4 ... 13
123// Returns: none
1d4857c5 124 Int_t r = AliBitPacking::UnpackWord(w32,22,26); assert(1<=r&&r<=24); // Row number (1..24)
125 Int_t d = AliBitPacking::UnpackWord(w32,18,21); assert(1<=d&&d<=10); // 3322 2222 2222 1111 1111 1000 0000 0000 DILOGIC number (1..10)
126 Int_t a = AliBitPacking::UnpackWord(w32,12,17); assert(0<=a&&a<=47); // 1098 7654 3210 9876 5432 1098 7654 3210 DILOGIC address (0..47)
a0e5c1b9 127 Int_t q = AliBitPacking::UnpackWord(w32, 0,11); assert(0<=q&&q<=4095); // 0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq Qdc (0..4095)
49dfd67a 128 if (r<1 || r>24 || d<1 || d>10 || a<0 || a>47 || q<0 || q>4095) {
129 AliWarning(Form("Invalid raw data word %x",w32));
130 pRR->AddMajorErrorLog(kInvalidRawDataWord,Form("w=%x",w32));
131 return kFALSE;
132 }
a0e5c1b9 133 Raw(ddl,r,d,a);
134 fQ=q;
49dfd67a 135 return kTRUE;
a0e5c1b9 136}
137//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
138void AliHMPIDDigit::Raw(Int_t ddl,Int_t r,Int_t d,Int_t a)
139{
56d2de52 140 assert(0<=ddl&&ddl<=13); assert(1<=r&&r<=24); assert(1<=d&&d<=10); assert(0<=a&&a<=47);
a0e5c1b9 141 Int_t a2y[6]={3,2,4,1,5,0};//pady for a given address (for single DILOGIC chip)
1d4857c5 142 Int_t ch=ddl/2;
143 Int_t tmp=(r-1)/8; Int_t pc=(ddl%2)? 5-2*tmp:2*tmp;
144 Int_t px=(d-1)*8+a/6;
145 tmp=(ddl%2)?(24-r):r-1; Int_t py=6*(tmp%8)+a2y[a%6];
ae5a42aa 146 fPad=AliHMPIDParam::Abs(ch,pc,px,py);
d3da6dc4 147}
a0e5c1b9 148
149
d3da6dc4 150//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
f3bae3e2 151Bool_t AliHMPIDDigit::Set(Int_t ch,Int_t pc,Int_t px,Int_t py,Int_t tid)
1d4857c5 152{
153// Manual creation of digit
154// Arguments: ch,pc,px,py,qdc,tid
f3bae3e2 155// Returns: kTRUE if wrong digit
ae5a42aa 156 if(px<AliHMPIDParam::kMinPx || px>AliHMPIDParam::kMaxPx) return kTRUE;
157 if(py<AliHMPIDParam::kMinPy || py>AliHMPIDParam::kMaxPy) return kTRUE;
1d4857c5 158
ae5a42aa 159 fPad=AliHMPIDParam::Abs(ch,pc,px,py);fTracks[0]=tid;
f3bae3e2 160 fQ=0;
1d4857c5 161 return kFALSE;
162}
d3da6dc4 163#endif