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Combining standard and sampling TGeo overlap checking in one AliGeomManager method...
[u/mrichter/AliRoot.git] / STEER / AliAlignObj.cxx
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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/* $Id$ */
17
18//-----------------------------------------------------------------
19// Implementation of the alignment object class, holding the alignment
20// constants for a single volume, through the abstract class AliAlignObj.
21// From it two derived concrete representation of alignment object class
22// (AliAlignObjParams, AliAlignObjMatrix) are derived in separate files.
23//-----------------------------------------------------------------
24
25#include <TGeoManager.h>
26#include <TGeoMatrix.h>
27#include <TGeoPhysicalNode.h>
28#include <TMath.h>
29#include <TMatrixDSym.h>
30
31#include "AliAlignObj.h"
32#include "AliTrackPointArray.h"
33#include "AliLog.h"
34
35ClassImp(AliAlignObj)
36
37//_____________________________________________________________________________
38AliAlignObj::AliAlignObj():
39 fVolPath(),
40 fVolUID(0)
41{
42 // default constructor
43 for(Int_t i=0; i<6; i++) fDiag[i]=-999.;
44 for(Int_t i=0; i<15; i++) fODia[i]=-999.;
45}
46
47//_____________________________________________________________________________
48AliAlignObj::AliAlignObj(const char* symname, UShort_t voluid) :
49 TObject(),
50 fVolPath(symname),
51 fVolUID(voluid)
52{
53 // standard constructor
54 //
55 for(Int_t i=0; i<6; i++) fDiag[i]=-999.;
56 for(Int_t i=0; i<15; i++) fODia[i]=-999.;
57}
58
59//_____________________________________________________________________________
60AliAlignObj::AliAlignObj(const char* symname, UShort_t voluid, Double_t* cmat) :
61 TObject(),
62 fVolPath(symname),
63 fVolUID(voluid)
64{
65 // standard constructor
66 //
67 SetCorrMatrix(cmat);
68}
69
70//_____________________________________________________________________________
71AliAlignObj::AliAlignObj(const AliAlignObj& theAlignObj) :
72 TObject(theAlignObj),
73 fVolPath(theAlignObj.GetSymName()),
74 fVolUID(theAlignObj.GetVolUID())
75{
76 //copy constructor
77 for(Int_t i=0; i<6; i++) fDiag[i]=theAlignObj.fDiag[i];
78 for(Int_t i=0; i<15; i++) fODia[i]=theAlignObj.fODia[i];
79}
80
81//_____________________________________________________________________________
82AliAlignObj &AliAlignObj::operator =(const AliAlignObj& theAlignObj)
83{
84 // assignment operator
85 if(this==&theAlignObj) return *this;
86 fVolPath = theAlignObj.GetSymName();
87 fVolUID = theAlignObj.GetVolUID();
88 for(Int_t i=0; i<6; i++) fDiag[i]=theAlignObj.fDiag[i];
89 for(Int_t i=0; i<15; i++) fODia[i]=theAlignObj.fODia[i];
90 return *this;
91}
92
93//_____________________________________________________________________________
94AliAlignObj &AliAlignObj::operator*=(const AliAlignObj& theAlignObj)
95{
96 // multiplication operator
97 // The operator can be used to 'combine'
98 // two alignment objects
99 TGeoHMatrix m1;
100 GetMatrix(m1);
101 TGeoHMatrix m2;
102 theAlignObj.GetMatrix(m2);
103 m1.MultiplyLeft(&m2);
104 SetMatrix(m1);
105 // temporary solution: the covariance matrix of the resulting combined object
106 // is set equal to the covariance matrix of the right operand
107 // (not to be used for combining alignment objects for different levels)
108 for(Int_t i=0; i<6; i++) fDiag[i] = theAlignObj.fDiag[i];
109 for(Int_t i=0; i<15; i++) fODia[i] = theAlignObj.fODia[i];
110 return *this;
111}
112
113//_____________________________________________________________________________
114AliAlignObj::~AliAlignObj()
115{
116 // dummy destructor
117}
118
119//_____________________________________________________________________________
120void AliAlignObj::SetVolUID(AliGeomManager::ELayerID detId, Int_t modId)
121{
122 // From detector name and module number (according to detector numbering)
123 // build fVolUID, unique numerical identity of that volume inside ALICE
124 // fVolUID is 16 bits, first 5 reserved for detID (32 possible values),
125 // remaining 11 for module ID inside det (2048 possible values).
126 //
127 fVolUID = AliGeomManager::LayerToVolUID(detId,modId);
128}
129
130//_____________________________________________________________________________
131void AliAlignObj::GetVolUID(AliGeomManager::ELayerID &layerId, Int_t &modId) const
132{
133 // From the fVolUID, unique numerical identity of that volume inside ALICE,
134 // (voluid is 16 bits, first 5 reserved for layerID (32 possible values),
135 // remaining 11 for module ID inside det (2048 possible values)), sets
136 // the argument layerId to the identity of the layer to which that volume
137 // belongs and sets the argument modId to the identity of that volume
138 // internally to the layer.
139 //
140 layerId = AliGeomManager::VolUIDToLayer(fVolUID,modId);
141}
142
143//_____________________________________________________________________________
144Bool_t AliAlignObj::GetPars(Double_t tr[], Double_t angles[]) const
145{
146 GetTranslation(tr);
147 return GetAngles(angles);
148}
149
150//_____________________________________________________________________________
151Int_t AliAlignObj::GetLevel() const
152{
153 // Return the geometry level of the alignable volume to which
154 // the alignment object is associated; this is the number of
155 // slashes in the corresponding volume path
156 //
157 if(!gGeoManager){
158 AliWarning("gGeoManager doesn't exist or it is still open: unable to return meaningful level value.");
159 return (-1);
160 }
161 const char* symname = GetSymName();
162 const char* path;
163 TGeoPNEntry* pne = gGeoManager->GetAlignableEntry(symname);
164 if(pne){
165 path = pne->GetTitle();
166 }else{
167 path = symname;
168 }
169
170 TString pathStr = path;
171 if(pathStr[0]!='/') pathStr.Prepend('/');
172 return pathStr.CountChar('/');
173}
174
175//_____________________________________________________________________________
176Int_t AliAlignObj::Compare(const TObject *obj) const
177{
178 // Compare the levels of two
179 // alignment objects
180 // Used in the sorting during
181 // the application of alignment
182 // objects to the geometry
183 //
184 Int_t level = GetLevel();
185 Int_t level2 = ((AliAlignObj *)obj)->GetLevel();
186 if (level == level2)
187 return 0;
188 else
189 return ((level > level2) ? 1 : -1);
190}
191
192//______________________________________________________________________________
193void AliAlignObj::GetCovMatrix(Double_t *cmat) const
194{
195 // Fills the cmat argument with the coefficients of the external cov matrix (21 elements)
196 // calculating them from the correlation matrix data member
197 //
198
199 for(Int_t i=0; i<6; ++i) {
200 // Off diagonal elements
201 for(Int_t j=0; j<i; ++j) {
202 cmat[i*(i+1)/2+j] = (fDiag[j] >= 0. && fDiag[i] >= 0.) ? fODia[(i-1)*i/2+j]*fDiag[j]*fDiag[i]: -999.;
203 }
204
205 // Diagonal elements
206 cmat[i*(i+1)/2+i] = (fDiag[i] >= 0.) ? fDiag[i]*fDiag[i] : -999.;
207 }
208
209 return;
210}
211
212//______________________________________________________________________________
213void AliAlignObj::GetCovMatrix(TMatrixDSym& mcov) const
214{
215 // Fills the matrix m passed as argument as the covariance matrix calculated
216 // from the coefficients of the reduced covariance matrix data members
217 //
218
219 for(Int_t i=0; i<6; ++i) {
220 // Off diagonal elements
221 for(Int_t j=0; j<i; ++j) {
222 mcov(j,i) = mcov(i,j) = (fDiag[j] >= 0. && fDiag[i] >= 0.) ? fODia[(i-1)*i/2+j]*fDiag[j]*fDiag[i]: -999.;
223 }
224
225 // Diagonal elements
226 mcov(i,i) = (fDiag[i] >= 0.) ? fDiag[i]*fDiag[i] : -999.;
227 }
228
229}
230
231//______________________________________________________________________________
232void AliAlignObj::SetCorrMatrix(Double_t *cmat)
233{
234 // Sets the correlation matrix data member from the coefficients of the external covariance
235 // matrix (21 elements passed as argument).
236 //
237 if(cmat) {
238
239 // Diagonal elements first
240 for(Int_t i=0; i<6; ++i) {
241 fDiag[i] = (cmat[i*(i+1)/2+i] >= 0.) ? TMath::Sqrt(cmat[i*(i+1)/2+i]) : -999.;
242 }
243
244 // ... then the ones off diagonal
245 for(Int_t i=0; i<6; ++i)
246 // Off diagonal elements
247 for(Int_t j=0; j<i; ++j) {
248 fODia[(i-1)*i/2+j] = (fDiag[i] > 0. && fDiag[j] > 0.) ? cmat[i*(i+1)/2+j]/(fDiag[j]*fDiag[i]) : 0.; // check for division by zero (due to diagonal element of 0) and for fDiag != -999. (due to negative input diagonal element).
249 if (fODia[(i-1)*i/2+j]>1.) fODia[(i-1)*i/2+j] = 1.; // check upper boundary
250 if (fODia[(i-1)*i/2+j]<-1.) fODia[(i-1)*i/2+j] = -1.; // check lower boundary
251 }
252 } else {
253 for(Int_t i=0; i< 6; ++i) fDiag[i]=-999.;
254 for(Int_t i=0; i< 6*(6-1)/2; ++i) fODia[i]=0.;
255 }
256
257 return;
258}
259
260//______________________________________________________________________________
261void AliAlignObj::SetCorrMatrix(TMatrixDSym& mcov)
262{
263 // Sets the correlation matrix data member from the covariance matrix mcov passed
264 // passed as argument.
265 //
266 if(mcov.IsValid()) {
267
268 // Diagonal elements first
269 for(Int_t i=0; i<6; ++i) {
270 fDiag[i] = (mcov(i,i) >= 0.) ? TMath::Sqrt(mcov(i,i)) : -999.;
271 }
272
273 // ... then the ones off diagonal
274 for(Int_t i=0; i<6; ++i)
275 // Off diagonal elements
276 for(Int_t j=0; j<i; ++j) {
277 fODia[(i-1)*i/2+j] = (fDiag[i] > 0. && fDiag[j] > 0.) ? mcov(i,j)/(fDiag[j]*fDiag[i]) : 0.; // check for division by zero (due to diagonal element of 0) and for fDiag != -999. (due to negative input diagonal element).
278 if (fODia[(i-1)*i/2+j]>1.) fODia[(i-1)*i/2+j] = 1.; // check upper boundary
279 if (fODia[(i-1)*i/2+j]<-1.) fODia[(i-1)*i/2+j] = -1.; // check lower boundary
280 }
281 } else {
282 for(Int_t i=0; i< 6; ++i) fDiag[i]=-999.;
283 for(Int_t i=0; i< 6*(6-1)/2; ++i) fODia[i]=0.;
284 }
285
286 return;
287}
288
289//_____________________________________________________________________________
290void AliAlignObj::AnglesToMatrix(const Double_t *angles, Double_t *rot) const
291{
292 // Calculates the rotation matrix using the
293 // Euler angles in "x y z" notation
294 //
295 Double_t degrad = TMath::DegToRad();
296 Double_t sinpsi = TMath::Sin(degrad*angles[0]);
297 Double_t cospsi = TMath::Cos(degrad*angles[0]);
298 Double_t sinthe = TMath::Sin(degrad*angles[1]);
299 Double_t costhe = TMath::Cos(degrad*angles[1]);
300 Double_t sinphi = TMath::Sin(degrad*angles[2]);
301 Double_t cosphi = TMath::Cos(degrad*angles[2]);
302
303 rot[0] = costhe*cosphi;
304 rot[1] = -costhe*sinphi;
305 rot[2] = sinthe;
306 rot[3] = sinpsi*sinthe*cosphi + cospsi*sinphi;
307 rot[4] = -sinpsi*sinthe*sinphi + cospsi*cosphi;
308 rot[5] = -costhe*sinpsi;
309 rot[6] = -cospsi*sinthe*cosphi + sinpsi*sinphi;
310 rot[7] = cospsi*sinthe*sinphi + sinpsi*cosphi;
311 rot[8] = costhe*cospsi;
312}
313
314//_____________________________________________________________________________
315Bool_t AliAlignObj::MatrixToAngles(const Double_t *rot, Double_t *angles) const
316{
317 // Calculates the Euler angles in "x y z" notation
318 // using the rotation matrix
319 // Returns false in case the rotation angles can not be
320 // extracted from the matrix
321 //
322 if(TMath::Abs(rot[0])<1e-7 || TMath::Abs(rot[8])<1e-7) {
323 AliError("Failed to extract roll-pitch-yall angles!");
324 return kFALSE;
325 }
326 Double_t raddeg = TMath::RadToDeg();
327 angles[0]=raddeg*TMath::ATan2(-rot[5],rot[8]);
328 angles[1]=raddeg*TMath::ASin(rot[2]);
329 angles[2]=raddeg*TMath::ATan2(-rot[1],rot[0]);
330 return kTRUE;
331}
332
333//______________________________________________________________________________
334void AliAlignObj::Transform(AliTrackPoint &p, Bool_t copycov) const
335{
336 // The method transforms the space-point coordinates using the
337 // transformation matrix provided by the AliAlignObj
338 // In case the copycov flag is set to kTRUE, the covariance matrix
339 // of the alignment object is copied into the space-point
340 //
341 if (fVolUID != p.GetVolumeID())
342 AliWarning(Form("Alignment object ID is not equal to the space-point ID (%d != %d)",fVolUID,p.GetVolumeID()));
343
344 TGeoHMatrix m;
345 GetMatrix(m);
346 Double_t *rot = m.GetRotationMatrix();
347 Double_t *tr = m.GetTranslation();
348
349 Float_t xyzin[3],xyzout[3];
350 p.GetXYZ(xyzin);
351 for (Int_t i = 0; i < 3; i++)
352 xyzout[i] = tr[i]+
353 xyzin[0]*rot[3*i]+
354 xyzin[1]*rot[3*i+1]+
355 xyzin[2]*rot[3*i+2];
356 p.SetXYZ(xyzout);
357
358 if(copycov){
359 TMatrixDSym covmat(6);
360 GetCovMatrix(covmat);
361 p.SetAlignCovMatrix(covmat);
362 }
363
364}
365
366//_____________________________________________________________________________
367void AliAlignObj::Transform(AliTrackPointArray &array) const
368{
369 // This method is used to transform all the track points
370 // from the input AliTrackPointArray
371 //
372 AliTrackPoint p;
373 for (Int_t i = 0; i < array.GetNPoints(); i++) {
374 array.GetPoint(p,i);
375 Transform(p);
376 array.AddPoint(i,&p);
377 }
378}
379
380//_____________________________________________________________________________
381void AliAlignObj::Print(Option_t *) const
382{
383 // Print the contents of the
384 // alignment object in angles and
385 // matrix representations
386 //
387 Double_t tr[3];
388 GetTranslation(tr);
389 Double_t angles[3];
390 GetAngles(angles);
391 TGeoHMatrix m;
392 GetMatrix(m);
393 const Double_t *rot = m.GetRotationMatrix();
394
395 printf("Volume=%s\n",GetSymName());
396 if (GetVolUID() != 0) {
397 AliGeomManager::ELayerID layerId;
398 Int_t modId;
399 GetVolUID(layerId,modId);
400 printf("VolumeID=%d LayerID=%d ( %s ) ModuleID=%d\n", GetVolUID(),layerId,AliGeomManager::LayerName(layerId),modId);
401 }
402 printf("%12.8f%12.8f%12.8f Tx = %12.8f Psi = %12.8f\n", rot[0], rot[1], rot[2], tr[0], angles[0]);
403 printf("%12.8f%12.8f%12.8f Ty = %12.8f Theta = %12.8f\n", rot[3], rot[4], rot[5], tr[1], angles[1]);
404 printf("%12.8f%12.8f%12.8f Tz = %12.8f Phi = %12.8f\n", rot[6], rot[7], rot[8], tr[2], angles[2]);
405
406}
407
408//_____________________________________________________________________________
409void AliAlignObj::SetPars(Double_t x, Double_t y, Double_t z,
410 Double_t psi, Double_t theta, Double_t phi)
411{
412 // Set the global delta transformation by passing 3 angles (expressed in
413 // degrees) and 3 shifts (in centimeters)
414 //
415 SetTranslation(x,y,z);
416 SetRotation(psi,theta,phi);
417}
418
419//_____________________________________________________________________________
420Bool_t AliAlignObj::SetLocalPars(Double_t x, Double_t y, Double_t z,
421 Double_t psi, Double_t theta, Double_t phi)
422{
423 // Set the global delta transformation by passing the parameters
424 // for the local delta transformation (3 shifts and 3 angles).
425 // In case that the TGeo was not initialized or not closed,
426 // returns false and the object parameters are not set.
427 //
428 TGeoHMatrix m;
429 Double_t tr[3] = {x, y, z};
430 m.SetTranslation(tr);
431 Double_t angles[3] = {psi, theta, phi};
432 Double_t rot[9];
433 AnglesToMatrix(angles,rot);
434 m.SetRotation(rot);
435
436 return SetLocalMatrix(m);
437
438}
439
440//_____________________________________________________________________________
441Bool_t AliAlignObj::SetLocalTranslation(Double_t x, Double_t y, Double_t z)
442{
443 // Set the global delta transformation by passing the three shifts giving
444 // the translation in the local reference system of the alignable
445 // volume (known by TGeo geometry).
446 // In case that the TGeo was not initialized or not closed,
447 // returns false and the object parameters are not set.
448 //
449 TGeoHMatrix m;
450 Double_t tr[3] = {x, y, z};
451 m.SetTranslation(tr);
452
453 return SetLocalMatrix(m);
454
455}
456
457//_____________________________________________________________________________
458Bool_t AliAlignObj::SetLocalTranslation(const TGeoMatrix& m)
459{
460 // Set the global delta transformation by passing the matrix of
461 // the local delta transformation and taking its translational part
462 // In case that the TGeo was not initialized or not closed,
463 // returns false and the object parameters are not set.
464 //
465 const Double_t* tr = m.GetTranslation();
466 TGeoHMatrix mtr;
467 mtr.SetTranslation(tr);
468
469 return SetLocalMatrix(mtr);
470
471}
472
473//_____________________________________________________________________________
474Bool_t AliAlignObj::SetLocalRotation(Double_t psi, Double_t theta, Double_t phi)
475{
476 // Set the global delta transformation by passing the three angles giving
477 // the rotation in the local reference system of the alignable
478 // volume (known by TGeo geometry).
479 // In case that the TGeo was not initialized or not closed,
480 // returns false and the object parameters are not set.
481 //
482 TGeoHMatrix m;
483 Double_t angles[3] = {psi, theta, phi};
484 Double_t rot[9];
485 AnglesToMatrix(angles,rot);
486 m.SetRotation(rot);
487
488 return SetLocalMatrix(m);
489
490}
491
492//_____________________________________________________________________________
493Bool_t AliAlignObj::SetLocalRotation(const TGeoMatrix& m)
494{
495 // Set the global delta transformation by passing the matrix of
496 // the local delta transformation and taking its rotational part
497 // In case that the TGeo was not initialized or not closed,
498 // returns false and the object parameters are not set.
499 //
500 TGeoHMatrix rotm;
501 const Double_t* rot = m.GetRotationMatrix();
502 rotm.SetRotation(rot);
503
504 return SetLocalMatrix(rotm);
505
506}
507
508//_____________________________________________________________________________
509Bool_t AliAlignObj::SetLocalMatrix(const TGeoMatrix& m)
510{
511 // Set the global delta transformation by passing the TGeo matrix
512 // for the local delta transformation.
513 // In case that the TGeo was not initialized or not closed,
514 // returns false and the object parameters are not set.
515 //
516 if (!gGeoManager || !gGeoManager->IsClosed()) {
517 AliError("Can't set the local alignment object parameters! gGeoManager doesn't exist or it is still open!");
518 return kFALSE;
519 }
520
521 const char* symname = GetSymName();
522 TGeoPhysicalNode* node;
523 TGeoPNEntry* pne = gGeoManager->GetAlignableEntry(symname);
524 if(pne){
525 if(!pne->GetPhysicalNode()){
526 node = gGeoManager->MakeAlignablePN(pne);
527 }else{
528 node = pne->GetPhysicalNode();
529 }
530 }else{
531 AliWarning(Form("The symbolic volume name %s does not correspond to a physical entry. Using it as volume path!",symname));
532 node = (TGeoPhysicalNode*) gGeoManager->MakePhysicalNode(symname);
533 }
534
535 if (!node) {
536 AliError(Form("Volume name or path %s not valid!",symname));
537 return kFALSE;
538 }
539 if (node->IsAligned())
540 AliWarning(Form("Volume %s has been already misaligned!",symname));
541
542 TGeoHMatrix m1;
543 const Double_t *tr = m.GetTranslation();
544 m1.SetTranslation(tr);
545 const Double_t* rot = m.GetRotationMatrix();
546 m1.SetRotation(rot);
547
548 TGeoHMatrix align,gprime,gprimeinv;
549 gprime = *node->GetMatrix();
550 gprimeinv = gprime.Inverse();
551 m1.Multiply(&gprimeinv);
552 m1.MultiplyLeft(&gprime);
553
554 return SetMatrix(m1);
555}
556
557//_____________________________________________________________________________
558Bool_t AliAlignObj::SetMatrix(const TGeoMatrix& m)
559{
560 // Set the global delta transformation by passing the TGeoMatrix
561 // for it
562 //
563 SetTranslation(m);
564 return SetRotation(m);
565}
566
567//_____________________________________________________________________________
568Bool_t AliAlignObj::GetLocalPars(Double_t transl[], Double_t angles[]) const
569{
570 // Get the translations and angles (in degrees) expressing the
571 // local delta transformation.
572 // In case that the TGeo was not initialized or not closed,
573 // returns false and the object parameters are not set.
574 //
575 if(!GetLocalTranslation(transl)) return kFALSE;
576 return GetLocalAngles(angles);
577}
578
579//_____________________________________________________________________________
580Bool_t AliAlignObj::GetLocalTranslation(Double_t* tr) const
581{
582 // Get the 3 shifts giving the translational part of the local
583 // delta transformation.
584 // In case that the TGeo was not initialized or not closed,
585 // returns false and the object parameters are not set.
586 //
587 TGeoHMatrix ml;
588 if(!GetLocalMatrix(ml)) return kFALSE;
589 const Double_t* transl;
590 transl = ml.GetTranslation();
591 tr[0]=transl[0];
592 tr[1]=transl[1];
593 tr[2]=transl[2];
594 return kTRUE;
595}
596
597//_____________________________________________________________________________
598Bool_t AliAlignObj::GetLocalAngles(Double_t* angles) const
599{
600 // Get the 3 angles giving the rotational part of the local
601 // delta transformation.
602 // In case that the TGeo was not initialized or not closed,
603 // returns false and the object parameters are not set.
604 //
605 TGeoHMatrix ml;
606 if(!GetLocalMatrix(ml)) return kFALSE;
607 const Double_t *rot = ml.GetRotationMatrix();
608 return MatrixToAngles(rot,angles);
609}
610
611//_____________________________________________________________________________
612Bool_t AliAlignObj::GetLocalMatrix(TGeoHMatrix& m) const
613{
614 // Get the matrix for the local delta transformation.
615 // In case that the TGeo was not initialized or not closed,
616 // returns false and the object parameters are not set.
617 //
618 if (!gGeoManager || !gGeoManager->IsClosed()) {
619 AliError("Can't get the local alignment object parameters! gGeoManager doesn't exist or it is still open!");
620 return kFALSE;
621 }
622
623 const char* symname = GetSymName();
624 TGeoPhysicalNode* node;
625 TGeoPNEntry* pne = gGeoManager->GetAlignableEntry(symname);
626 if(pne){
627 if(!pne->GetPhysicalNode()){
628 node = gGeoManager->MakeAlignablePN(pne);
629 }else{
630 node = pne->GetPhysicalNode();
631 }
632 }else{
633 AliWarning(Form("The symbolic volume name %s does not correspond to a physical entry. Using it as volume path!",symname));
634 node = (TGeoPhysicalNode*) gGeoManager->MakePhysicalNode(symname);
635 }
636
637 if (!node) {
638 AliError(Form("Volume name or path %s not valid!",symname));
639 return kFALSE;
640 }
641 if (node->IsAligned())
642 AliWarning(Form("Volume %s has been already misaligned!",symname));
643
644 GetMatrix(m);
645 TGeoHMatrix gprime,gprimeinv;
646 gprime = *node->GetMatrix();
647 gprimeinv = gprime.Inverse();
648 m.Multiply(&gprime);
649 m.MultiplyLeft(&gprimeinv);
650
651 return kTRUE;
652}
653
654//_____________________________________________________________________________
655Bool_t AliAlignObj::ApplyToGeometry(Bool_t ovlpcheck)
656{
657 // Apply the current alignment object to the TGeo geometry
658 // This method returns FALSE if the symname of the object was not
659 // valid neither to get a TGeoPEntry nor as a volume path
660 //
661 if (!gGeoManager || !gGeoManager->IsClosed()) {
662 AliError("Can't apply the alignment object! gGeoManager doesn't exist or it is still open!");
663 return kFALSE;
664 }
665
666 if (gGeoManager->IsLocked()){
667 AliError("Can't apply the alignment object! Geometry is locked!");
668 return kFALSE;
669 }
670
671 const char* symname = GetSymName();
672 const char* path;
673 TGeoPhysicalNode* node;
674 TGeoPNEntry* pne = gGeoManager->GetAlignableEntry(symname);
675 if(pne){
676 path = pne->GetTitle();
677 node = gGeoManager->MakeAlignablePN(pne);
678 }else{
679 AliDebug(1,Form("The symbolic volume name %s does not correspond to a physical entry. Using it as a volume path!",symname));
680 path=symname;
681 if (!gGeoManager->CheckPath(path)) {
682 AliDebug(1,Form("Volume path %s not valid!",path));
683 return kFALSE;
684 }
685 if (gGeoManager->GetListOfPhysicalNodes()->FindObject(path)) {
686 AliError(Form("Volume %s has already been misaligned!",path));
687 return kFALSE;
688 }
689 node = (TGeoPhysicalNode*) gGeoManager->MakePhysicalNode(path);
690 }
691
692 if (!node) {
693 AliError(Form("Volume path %s not valid!",path));
694 return kFALSE;
695 }
696
697 Int_t nOvlpBefore = 0, nOvlpAfter = 0;
698 Double_t threshold = 0.01;
699
700 if(ovlpcheck)
701 {
702 gGeoManager->cd(path);
703 gGeoManager->CdUp();
704 TGeoNode* start = gGeoManager->GetCurrentNode();
705 nOvlpBefore = AliGeomManager::CheckOverlapsExtrusions(start, threshold);
706 }
707
708 TGeoHMatrix align,gprime;
709 gprime = *node->GetMatrix();
710 GetMatrix(align);
711 gprime.MultiplyLeft(&align);
712 TGeoHMatrix *ginv = new TGeoHMatrix;
713 TGeoHMatrix *g = node->GetMatrix(node->GetLevel()-1);
714 *ginv = g->Inverse();
715 *ginv *= gprime;
716 AliGeomManager::ELayerID layerId; // unique identity for layer in the alobj
717 Int_t modId; // unique identity for volume inside layer in the alobj
718 GetVolUID(layerId, modId);
719 AliDebug(2,Form("Aligning volume %s of detector layer %d with local ID %d",symname,layerId,modId));
720 node->Align(ginv,0);
721
722
723 if(ovlpcheck){
724 TGeoNode* start = node->GetNode();
725 nOvlpAfter = AliGeomManager::CheckOverlapsExtrusions(start, threshold);
726 if(nOvlpBefore < nOvlpAfter){
727 TString error(Form("The alignment of volume %s introduced %d new overlap",GetSymName(), nOvlpAfter-nOvlpBefore));
728 if(nOvlpAfter-nOvlpBefore > 1) error+="s";
729 AliError(error.Data());
730 //return kFALSE;
731 }
732 }
733
734 return kTRUE;
735}
736
737