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