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b0f5e3fc | 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 | ||
1ca7869b | 16 | #include <TF1.h> |
b0f5e3fc | 17 | #include <TMath.h> |
18 | ||
b0f5e3fc | 19 | #include "AliITSsegmentationSDD.h" |
20 | #include "AliITS.h" | |
314ba410 | 21 | #include "AliITSgeom.h" |
b0f5e3fc | 22 | #include "AliRun.h" |
314ba410 | 23 | #include "AliITSresponse.h" |
b0f5e3fc | 24 | |
b0f5e3fc | 25 | |
26 | ClassImp(AliITSsegmentationSDD) | |
27 | //------------------------------ | |
28 | AliITSsegmentationSDD::AliITSsegmentationSDD(AliITSgeom* geom, AliITSresponse *resp){ | |
29 | // constructor | |
30 | fGeom=geom; | |
31 | fResponse=resp; | |
32 | fCorr=0; | |
33 | SetDetSize(); | |
e8189707 | 34 | SetPadSize(); |
35 | SetNPads(); | |
b0f5e3fc | 36 | |
37 | } | |
38 | //_____________________________________________________________________________ | |
39 | AliITSsegmentationSDD::AliITSsegmentationSDD(){ | |
e8189707 | 40 | // standard constructor |
b0f5e3fc | 41 | fGeom=0; |
42 | fResponse=0; | |
43 | fCorr=0; | |
44 | SetDetSize(); | |
e8189707 | 45 | SetPadSize(); |
46 | SetNPads(); | |
b0f5e3fc | 47 | |
48 | } | |
49 | //_____________________________________________________________________________ | |
50 | AliITSsegmentationSDD& AliITSsegmentationSDD::operator=(AliITSsegmentationSDD &source){ | |
51 | // Operator = | |
52 | if(this==&source) return *this; | |
53 | this->fNsamples = source.fNsamples; | |
54 | this->fNanodes = source.fNanodes; | |
55 | this->fPitch = source.fPitch; | |
56 | this->fTimeStep = source.fTimeStep; | |
57 | this->fDx = source.fDx; | |
58 | this->fDz = source.fDz; | |
59 | this->fDy = source.fDy; | |
60 | this->fCorr = new TF1(*(source.fCorr)); | |
61 | this->fGeom = source.fGeom; // Just copy the pointer | |
62 | this->fResponse = source.fResponse; //Just copy the pointer | |
63 | return *this; | |
64 | } | |
65 | //___________________________________________________________________________ | |
66 | AliITSsegmentationSDD::AliITSsegmentationSDD(AliITSsegmentationSDD &source){ | |
67 | // Copy constructor | |
68 | *this = source; | |
69 | } | |
70 | //------------------------------ | |
71 | void AliITSsegmentationSDD::Init(){ | |
72 | // Standard initilisation routine | |
73 | ||
e8189707 | 74 | if(!fGeom) { |
314ba410 | 75 | return; |
76 | //fGeom = ((AliITS*)gAlice->GetModule("ITS"))->GetITSgeom(); | |
e8189707 | 77 | } |
b0f5e3fc | 78 | AliITSgeomSDD *gsdd = (AliITSgeomSDD *) (fGeom->GetShape(3,1,1)); |
79 | ||
80 | const Float_t kconv=10000.; | |
81 | fDz = 2.*kconv*gsdd->GetDz(); | |
82 | fDx = kconv*gsdd->GetDx(); | |
83 | fDy = 2.*kconv*gsdd->GetDy(); | |
84 | } | |
85 | ||
86 | //------------------------------ | |
87 | void AliITSsegmentationSDD:: | |
314ba410 | 88 | Neighbours(Int_t iX, Int_t iZ, Int_t* Nlist, Int_t Xlist[8], Int_t Zlist[8]){ |
89 | // returns neighbours for use in Cluster Finder routines and the like | |
b0f5e3fc | 90 | |
e8189707 | 91 | if(iX >= fNanodes) printf("iX > fNanodes %d %d\n",iX,fNanodes); |
92 | if(iZ >= fNsamples) printf("iZ > fNsamples %d %d\n",iZ,fNsamples); | |
b0f5e3fc | 93 | *Nlist=4; |
94 | Xlist[0]=Xlist[1]=iX; | |
314ba410 | 95 | if(iX && (iX != fNanodes/2)) Xlist[2]=iX-1; |
b0f5e3fc | 96 | else Xlist[2]=iX; |
314ba410 | 97 | if ((iX !=fNanodes/2 -1) && (iX != fNanodes)) Xlist[3]=iX+1; |
b0f5e3fc | 98 | else Xlist[3]=iX; |
99 | if(iZ) Zlist[0]=iZ-1; | |
100 | else Zlist[0]=iZ; | |
101 | if (iZ < fNsamples) Zlist[1]=iZ+1; | |
102 | else Zlist[1]=iZ; | |
103 | Zlist[2]=Zlist[3]=iZ; | |
b0f5e3fc | 104 | } |
105 | //------------------------------ | |
e8189707 | 106 | void AliITSsegmentationSDD::GetPadIxz(Float_t x,Float_t z,Int_t &timebin,Int_t &anode){ |
b0f5e3fc | 107 | // Returns cell coordinates (time sample,anode) for given real local coordinates (x,z) |
108 | ||
109 | // expects x, z in cm | |
110 | ||
111 | const Float_t kconv=10000; // cm->um | |
112 | ||
113 | Float_t speed=fResponse->DriftSpeed(); | |
114 | Int_t na = fNanodes/2; | |
115 | Float_t driftpath=fDx-TMath::Abs(kconv*x); | |
116 | timebin=(Int_t)(driftpath/speed/fTimeStep); | |
e8189707 | 117 | anode=(Int_t)(kconv*z/fPitch) + na/2; |
b0f5e3fc | 118 | if (x > 0) anode += na; |
119 | ||
120 | timebin+=1; | |
121 | anode+=1; | |
122 | ||
123 | } | |
124 | ||
125 | //------------------------------ | |
e8189707 | 126 | void AliITSsegmentationSDD::GetPadCxz(Int_t timebin,Int_t anode,Float_t &x ,Float_t &z){ |
b0f5e3fc | 127 | // Transform from cell to real local coordinates |
128 | ||
129 | // returns x, z in cm | |
130 | ||
131 | const Float_t kconv=10000; // um->cm | |
132 | ||
133 | Float_t speed=fResponse->DriftSpeed(); | |
134 | Int_t na = fNanodes/2; | |
135 | Float_t driftpath=(timebin+1)*fTimeStep*speed; | |
136 | if (anode >= na) x=(fDx-driftpath)/kconv; | |
137 | else x = -(fDx-driftpath)/kconv; | |
138 | if (anode >= na) anode-=na; | |
139 | z=((anode+1)*fPitch-fDz/2)/kconv; | |
140 | ||
141 | } | |
142 | ||
e8189707 | 143 | //------------------------------ |
144 | void AliITSsegmentationSDD::GetPadTxz(Float_t &x,Float_t &z){ | |
145 | // Get anode and time bucket as floats - numbering from 0 | |
146 | ||
147 | // expects x, z in cm | |
148 | ||
149 | const Float_t kconv=10000; // cm->um | |
150 | ||
314ba410 | 151 | //Float_t x0=x; |
e8189707 | 152 | Float_t speed=fResponse->DriftSpeed(); |
314ba410 | 153 | //Int_t na = fNanodes/2; |
e8189707 | 154 | Float_t driftpath=fDx-TMath::Abs(kconv*x); |
155 | x=driftpath/speed/fTimeStep; | |
314ba410 | 156 | z=kconv*z/fPitch; |
157 | // z=kconv*z/fPitch + (float)na/2; | |
158 | //if (x0 > 0) z += (float)na; | |
e8189707 | 159 | |
160 | } | |
b0f5e3fc | 161 | //------------------------------ |
162 | void AliITSsegmentationSDD::GetLocal(Int_t module,Float_t *g ,Float_t *l){ | |
163 | // returns local coordinates from global | |
164 | if(!fGeom) { | |
314ba410 | 165 | return; |
166 | //fGeom = ((AliITS*)gAlice->GetModule("ITS"))->GetITSgeom(); | |
b0f5e3fc | 167 | } |
168 | fGeom->GtoL(module,g,l); | |
169 | } | |
170 | //------------------------------ | |
171 | void AliITSsegmentationSDD::GetGlobal(Int_t module,Float_t *l ,Float_t *g){ | |
172 | // return global coordinates from local | |
173 | if(!fGeom) { | |
314ba410 | 174 | return; |
175 | //fGeom = ((AliITS*)gAlice->GetModule("ITS"))->GetITSgeom(); | |
b0f5e3fc | 176 | } |
177 | ||
178 | fGeom->LtoG(module,l,g); | |
179 | ||
180 | } |