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18 /* History of cvs commits:
21 * Revision 1.5 2007/07/10 12:41:38 kharlov
22 * Added a new class AliPHOSSurvet1 which read survey data from EDMS files
24 * Revision 1.4 2007/05/17 17:34:54 kharlov
25 * Merging differences if v1.2 and 1.3
27 * Revision 1.3 2007/05/17 17:13:32 kharlov
28 * Coding convensions satisfied (T.Pocheptsov)
30 * Revision 1.1 2007/04/19 15:47:20 kharlov
31 * Add misalignment of strip units with AliPHOSSurvey class
35 // Objects of this class read txt file with survey (photogrammetry) data
36 // and convert the data into AliAlignObjParams of alignable PHOS volumes.
37 // It can be used as a base class, you need to override GetStripTransformation.
38 // AliPHOSSurvey inherits TObject only to use AliLog "functions".
39 // Author: Timur Pocheptsov (JINR)
43 #include <TClonesArray.h>
44 #include <TGeoManager.h>
48 #include "AliSurveyObj.h"
50 #include "AliPHOSEMCAGeometry.h"
51 #include "AliAlignObjParams.h"
52 #include "AliPHOSGeometry.h"
53 #include "AliPHOSSurvey.h"
56 ClassImp(AliPHOSSurvey)
58 //____________________________________________________________________________
59 AliPHOSSurvey::AliPHOSSurvey()
63 //Default constructor.
68 struct AliPHOSStripCoords {
69 Double_t fX1; //x coordinate of the first strip point
70 Double_t fZ1; //z coordinate of the first strip point
71 Double_t fX2; //x coordinate of the second strip point
72 Double_t fZ2; //z coordinate of the second strip point
77 //____________________________________________________________________________
78 AliPHOSSurvey::AliPHOSSurvey(const TString &txtFileName)
82 //Read survey data from txt file.
83 const AliPHOSGeometry *phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
85 AliError("Cannot obtain AliPHOSGeometry instance.");
89 std::ifstream inputFile(txtFileName.Data());
91 AliError(("Cannot open the survey file " + txtFileName).Data());
95 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
96 fStrNum = emcaGeom->GetNStripX() * emcaGeom->GetNStripZ();
100 Double_t *xReal = new Double_t[fStrNum * 2];//2
101 Double_t *zReal = new Double_t[fStrNum * 2];//3
103 for (Int_t i = 0; i < fStrNum * 2; ++i) {
105 AliError("Error while reading input file.");
110 inputFile>>dummyInt>>xReal[i]>>dummyY>>zReal[i];
115 InitStripData(xReal, zReal);
121 //____________________________________________________________________________
122 AliPHOSSurvey::~AliPHOSSurvey()
124 delete [] fStripData;
127 //____________________________________________________________________________
128 void AliPHOSSurvey::CreateAliAlignObjParams(TClonesArray &array)
130 //Create AliAlignObjParams.
131 const AliPHOSGeometry * phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
133 AliError("Cannot obtain AliPHOSGeometry instance.");
138 AliWarning("Cannot create local transformations for strip units - gGeoManager does not exist.");
139 AliInfo("Null shifts and rotations will be created instead.");
140 return CreateNullObjects(array, phosGeom);
143 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
144 Int_t arrayInd = array.GetEntries(), iIndex = 0;
145 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
146 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
148 for (Int_t module = 1; module <= phosGeom->GetNModules(); ++module) {
149 for (Int_t i = 0, stripNum = 0; i < emcaGeom->GetNStripX(); ++i) {
150 for (Int_t j = 0; j < emcaGeom->GetNStripZ(); ++j) {
151 TString stripName(TString::Format("PHOS/Module%d/Strip_%d_%d", module, i, j));
152 AliPHOSStripDelta t(GetStripTransformation(stripNum++, module));
155 stripName.Data(), volid,
156 t.fXShift, t.fYShift, t.fZShift,
157 -t.fPsi, -t.fTheta, -t.fPhi,
166 //____________________________________________________________________________
167 void AliPHOSSurvey::CreateNullObjects(TClonesArray &array, const AliPHOSGeometry *phosGeom)const
169 //Create null shifts and rotations.
170 const AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
171 Int_t arrayInd = array.GetEntries(), iIndex = 0;
172 AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
173 UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
175 for (Int_t module = 1; module <= phosGeom->GetNModules(); ++module)
176 for (Int_t i = 0; i < emcaGeom->GetNStripX(); ++i)
177 for (Int_t j = 0; j < emcaGeom->GetNStripZ(); ++j) {
178 TString stripName(TString::Format("PHOS/Module%d/Strip_%d_%d", module, i, j));
179 new(array[arrayInd]) AliAlignObjParams(stripName.Data(), volid, 0., 0., 0., 0., 0., 0., true);
184 //____________________________________________________________________________
185 AliPHOSSurvey::AliPHOSStripDelta AliPHOSSurvey::GetStripTransformation(Int_t stripIndex, Int_t module)const
187 //Strip 'stripIndex' transformation.
188 AliPHOSStripDelta t = {0., 0., 0., 0., 0., 0.};
189 if (module != 3 || !fStripData)
191 return fStripData[stripIndex];
194 //____________________________________________________________________________
195 void AliPHOSSurvey::InitStripData(const Double_t *xReal, const Double_t *zReal)
197 const AliPHOSGeometry *phosGeom = AliPHOSGeometry::GetInstance("IHEP", "IHEP");
198 AliPHOSEMCAGeometry * emcaGeom = phosGeom->GetEMCAGeometry();
199 const Float_t *strip = emcaGeom->GetStripHalfSize();
200 const Float_t *cell = emcaGeom->GetSteelCellHalfSize();
202 AliPHOSStripCoords *idealStrips = new AliPHOSStripCoords[fStrNum];//1
203 for (Int_t ix = 0, stripNumber = 0; ix < emcaGeom->GetNStripX(); ++ix) {
204 for (Int_t iz = 0; iz < emcaGeom->GetNStripZ(); ++iz) {
205 AliPHOSStripCoords &str = idealStrips[stripNumber++];
206 str.fX1 = ix * 2 * strip[0];
207 str.fX2 = str.fX1 + 14 * cell[0];
208 str.fZ1 = iz * 2 * strip[2];
209 str.fZ2 = str.fZ1 + 2 * cell[2];
213 AliPHOSStripCoords *realStrips = new AliPHOSStripCoords[fStrNum];//4
214 for (Int_t j = 0, stripNumber = 0; j < emcaGeom->GetNStripX() * 2; j += 2) {
215 for (Int_t i = 0; i < emcaGeom->GetNStripZ(); ++i) {
216 AliPHOSStripCoords &str = realStrips[stripNumber++];
217 str.fX1 = xReal[i + j * emcaGeom->GetNStripZ()];
218 str.fZ1 = zReal[i + j * emcaGeom->GetNStripZ()];
219 str.fX2 = xReal[i + (j + 1) * emcaGeom->GetNStripZ()];
220 str.fZ2 = zReal[i + (j + 1) * emcaGeom->GetNStripZ()];
224 fStripData = new AliPHOSStripDelta[fStrNum];
226 for (Int_t i = 0; i < fStrNum; ++i) {
227 const AliPHOSStripCoords &real = realStrips[i];
228 const AliPHOSStripCoords &ideal = idealStrips[i];
229 AliPHOSStripDelta &t = fStripData[i];
230 t.fTheta = TMath::ATan((real.fZ2 - real.fZ1) / (real.fX2 - real.fX1)) -
231 TMath::ATan((ideal.fZ2 - ideal.fZ1) / (ideal.fX2 - ideal.fX1));
232 t.fTheta *= TMath::RadToDeg();
233 t.fXShift = (real.fX1 + real.fX2) / 2 - (ideal.fX1 + ideal.fX2) / 2;
234 t.fZShift = (real.fZ1 + real.fZ2) / 2 - (ideal.fZ1 + ideal.fZ2) / 2;
235 t.fYShift = 0., t.fPsi = 0., t.fPhi = 0.;
238 delete [] realStrips;
239 delete [] idealStrips;