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1963b290 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2004, 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 | /* $Id$ */ | |
17 | ||
18 | //*-- Author: Aleksei Pavlinov(WSU) | |
19 | ||
20 | #include "AliEMCALShishKebabTrd1Module.h" | |
21 | #include <assert.h> | |
22 | #include <TMath.h> | |
23 | #include "AliEMCALGeometry.h" | |
24 | ||
25 | ClassImp(AliEMCALShishKebabTrd1Module) | |
26 | ||
27 | AliEMCALGeometry *AliEMCALShishKebabTrd1Module::fgGeometry=0; | |
28 | Double_t AliEMCALShishKebabTrd1Module::fga=0.; | |
29 | Double_t AliEMCALShishKebabTrd1Module::fga2=0.; | |
30 | Double_t AliEMCALShishKebabTrd1Module::fgb=0.; | |
31 | Double_t AliEMCALShishKebabTrd1Module::fgr=0.; | |
32 | Double_t AliEMCALShishKebabTrd1Module::fgangle=0.; // one degrre | |
33 | Double_t AliEMCALShishKebabTrd1Module::fgtanBetta=0; // | |
34 | ||
eb0b1051 | 35 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(double theta) : TNamed() |
1963b290 | 36 | { // theta in radians ; first object shold be with theta=pi/2. |
37 | fTheta = theta; | |
38 | if(fgGeometry==0) { | |
39 | if(GetParameters()) { | |
40 | DefineFirstModule(); | |
41 | } | |
42 | } else Warning("AliEMCALShishKebabTrd1Module(theta)","You should call this constractor just once !!"); | |
43 | DefineName(fTheta); | |
44 | } | |
45 | ||
46 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor) : TNamed() | |
47 | { // 22-sep-04 | |
48 | // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName()); | |
49 | TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1); | |
50 | fTheta = leftNeighbor.GetTheta() - fgangle; | |
51 | Init(leftNeighbor.GetA(),leftNeighbor.GetB()); | |
52 | } | |
53 | ||
eb0b1051 | 54 | void AliEMCALShishKebabTrd1Module::Init(double A, double B) |
1963b290 | 55 | { // Define parameter module from parameters A,B from previos. |
56 | Double_t yl = (fgb/2)*TMath::Sin(fTheta) + (fga/2)*TMath::Cos(fTheta) + fgr, y = yl; | |
57 | Double_t xl = (yl - B) / A; // y=A*x+B | |
58 | ||
59 | // Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta)); | |
60 | // printf(" xp1 %9.3f \n ", xp1); | |
61 | // xp1 == xp => both methods give the same results - 3-feb-05 | |
62 | Double_t alpha = TMath::Pi()/2. + fgangle/2; | |
63 | Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha))); | |
64 | Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt); | |
65 | Double_t x = xl + xp; | |
66 | fOK.Set(x, y); | |
67 | // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp); | |
68 | ||
69 | // have to define A and B; | |
70 | Double_t yCprev = fgr + fga*TMath::Cos(fTheta); | |
71 | Double_t xCprev = (yCprev - B) / A; | |
72 | Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr; | |
73 | ||
74 | fThetaA = fTheta - fgangle/2.; | |
75 | fA = TMath::Tan(fThetaA); // !! | |
76 | fB = yA - fA*xA; | |
77 | ||
78 | DefineName(fTheta); | |
79 | // Centers of modules | |
80 | Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2 | |
81 | ||
82 | Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta); | |
83 | Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta); | |
84 | fOK1.Set(xk1,yk1); | |
85 | ||
86 | Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta); | |
87 | Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta); | |
88 | fOK2.Set(xk2,yk2); | |
89 | } | |
90 | ||
91 | void AliEMCALShishKebabTrd1Module::DefineFirstModule() | |
92 | { | |
93 | fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o | |
94 | ||
95 | // parameters of right line : y = A*z + B in system where zero point is IP. | |
96 | fThetaA = fTheta - fgangle/2.; | |
97 | fA = TMath::Tan(fThetaA); | |
98 | Double_t xA = fga/2. + fga2/2., yA = fgr; | |
99 | fB = yA - fA*xA; | |
100 | ||
101 | Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2 | |
102 | fOK1.Set(fOK.X() - kk1, fOK.Y()); | |
103 | fOK2.Set(fOK.X() + kk1, fOK.Y()); | |
104 | ||
105 | TObject::SetUniqueID(1); // | |
106 | } | |
107 | ||
eb0b1051 | 108 | void AliEMCALShishKebabTrd1Module::DefineName(double theta) |
1963b290 | 109 | { |
110 | char name[100]; | |
111 | // sprintf(name,"theta_%5.2f",theta*180./TMath::Pi()); | |
112 | sprintf(name,"%2i(%5.2f)", TObject::GetUniqueID(), theta*180./TMath::Pi()); | |
113 | SetName(name); | |
114 | } | |
115 | ||
116 | Bool_t AliEMCALShishKebabTrd1Module::GetParameters() | |
117 | { | |
118 | fgGeometry = AliEMCALGeometry::GetInstance(); | |
119 | TString sn(fgGeometry->GetName()); // 2-Feb-05 | |
120 | sn.ToUpper(); | |
121 | if(!fgGeometry) { | |
122 | Warning("GetParameters()"," No geometry "); | |
123 | return kFALSE; | |
124 | } | |
125 | ||
126 | fga = (Double_t)fgGeometry->GetEtaModuleSize(); | |
127 | fgb = (Double_t)fgGeometry->GetLongModuleSize(); | |
128 | fgangle = Double_t(fgGeometry->GetTrd1Angle())*TMath::DegToRad(); | |
129 | fgtanBetta = TMath::Tan(fgangle/2.); | |
130 | fgr = (Double_t)fgGeometry->GetIPDistance(); | |
131 | if(!sn.Contains("TRD2")) fgr += fgGeometry->GetSteelFrontThickness(); | |
132 | fga2 = Double_t(fgGeometry->Get2Trd1Dx2()); | |
133 | Print(0); | |
134 | return kTRUE; | |
135 | } | |
136 | ||
137 | // service methods | |
eb0b1051 | 138 | void AliEMCALShishKebabTrd1Module::Print(int pri) const |
1963b290 | 139 | { |
140 | if(pri>=0) { | |
141 | Info("Print()", "\n a %7.3f:%7.3f | b %7.2f | r %7.2f \n TRD1 angle %7.6f(%5.2f) | tanBetta %7.6f", | |
142 | fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta); | |
143 | printf(" fTheta %f : %5.2f : cos(theta) %f\n", | |
144 | fTheta, GetThetaInDegree(),TMath::Cos(fTheta)); | |
145 | if(pri>0) { | |
146 | printf("\n%i |%s| theta %f : fOK.Phi = %f(%5.2f)\n", | |
147 | GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg()); | |
148 | printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg()); | |
149 | fOK.Dump(); | |
150 | printf(" fOK : X %8.3f: Y %8.3f \n", fOK.X(), fOK.Y()); | |
151 | printf(" fOK1 : X %8.3f: Y %8.3f \n", fOK1.X(), fOK1.Y()); | |
152 | printf(" fOK2 : X %8.3f: Y %8.3f \n", fOK2.X(), fOK2.Y()); | |
153 | } | |
154 | } | |
155 | } |