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df5240ea | 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 | /* | |
17 | $Log$ | |
c909dd62 | 18 | Revision 1.16 2002/10/22 14:45:40 alibrary |
19 | Introducing Riostream.h | |
20 | ||
4ae5bbc4 | 21 | Revision 1.15 2002/10/14 14:57:00 hristov |
22 | Merging the VirtualMC branch to the main development branch (HEAD) | |
23 | ||
b9d0a01d | 24 | Revision 1.13.6.1 2002/06/10 17:51:15 hristov |
25 | Merged with v3-08-02 | |
26 | ||
27 | Revision 1.14 2002/05/19 18:17:03 hristov | |
28 | Changes needed by ICC/IFC compiler (Intel) | |
29 | ||
94831058 | 30 | Revision 1.13 2002/01/28 21:49:19 nilsen |
31 | Fixed a logical bug in functions GtoLPositionError, LtoGPositionError, | |
32 | GtoLPositionErrorTracking, and LtoGPositionErrorTracking. | |
33 | ||
ecb0c8bc | 34 | Revision 1.12 2001/10/12 22:07:20 nilsen |
35 | A patch for C++ io manipulation functions so that they will work both | |
36 | with GNU gcc 2.96 and GNU gcc 3.01 compilers. Needs to be tested with | |
37 | other platforms. | |
38 | ||
431a7819 | 39 | Revision 1.11 2001/09/04 14:54:31 hristov |
40 | Const multidimentional arrays cause problems in the CINT dictionary on HP, const removed | |
41 | ||
8d5bd3f9 | 42 | Revision 1.10 2001/08/24 21:06:37 nilsen |
43 | Added more documentation, fixed up some coding violations, and some | |
44 | forward declorations. | |
45 | ||
85f1e34a | 46 | Revision 1.9 2001/03/23 15:21:56 nilsen |
47 | Added Cylinderical Coordinates for use with Tracking. Fixed a but in the | |
48 | Streamer, It was not setting a value for frot[3] as it should when reading. | |
49 | ||
d8cc8493 | 50 | Revision 1.8 2001/02/09 00:00:57 nilsen |
51 | Fixed compatibility problem with HP unix {ios::fmtflags -> Int_t}. Fixed | |
52 | bugs in iostream based streamers used to read and write .det files. Fixed | |
53 | some detector sizes. Fixed bugs in some default-special constructors. | |
54 | ||
31b8cd63 | 55 | Revision 1.7 2001/02/03 00:00:30 nilsen |
56 | New version of AliITSgeom and related files. Now uses automatic streamers, | |
57 | set up for new formatted .det file which includes detector information. | |
58 | Additional smaller modifications are still to come. | |
59 | ||
a8a6107b | 60 | Revision 1.5 2000/10/02 16:32:35 barbera |
61 | Forward declaration added | |
62 | ||
92c19c36 | 63 | Revision 1.1.2.6 2000/10/02 15:52:05 barbera |
64 | Forward declaration added | |
65 | ||
66 | Revision 1.4 2000/09/07 17:30:45 nilsen | |
67 | fixed a bug in SixAnglesFromMatrix. | |
68 | ||
3f616de1 | 69 | Revision 1.3 2000/09/05 14:25:50 nilsen |
70 | Made fixes for HP compiler. All function parameter default values placed | |
71 | in .h file. Fixed the usual problem with HP comilers and the "for(Int_t i..." | |
72 | business. Replaced casting (Double_t [3][3]) to (Double_t (*)[3]) for HP. | |
73 | Lastly removed all "const" before function parameters which were 2 dim. arrays, | |
74 | because on HP root generates some strange code (?). Thanks Peter for the | |
75 | changes. | |
76 | ||
d962cab4 | 77 | Revision 1.2 2000/08/29 20:16:50 nilsen |
78 | New class for ITS coordiante transformations used by AliITSgeom nearly | |
79 | exclusively. | |
80 | ||
df5240ea | 81 | Revision 1.1.2.1 2000/06/04 16:32:31 Nilsen |
82 | A new class to hold the matrix information needed by AliITSgeom. | |
83 | ||
84 | */ | |
85f1e34a | 85 | |
86 | //////////////////////////////////////////////////////////////////////// | |
87 | // This is the implementation file for AliITSgeomMatrix class. It | |
88 | // contains the routines to manipulate, setup, and queary the geometry | |
89 | // of a given ITS module. An ITS module may be one of at least three | |
90 | // ITS detector technologies, Silicon Pixel, Drift, or Strip Detectors, | |
91 | // and variations of these in size and/or layout. These routines let | |
92 | // one go between ALICE global coordiantes (cm) to a given modules | |
93 | // specific local coordinates (cm). | |
94 | //////////////////////////////////////////////////////////////////////// | |
95 | ||
4ae5bbc4 | 96 | #include <Riostream.h> |
df5240ea | 97 | #include <TMath.h> |
98 | #include <TBuffer.h> | |
d8cc8493 | 99 | #include <TClass.h> |
df5240ea | 100 | |
101 | #include "AliITSgeomMatrix.h" | |
102 | ||
103 | ClassImp(AliITSgeomMatrix) | |
104 | //---------------------------------------------------------------------- | |
105 | AliITSgeomMatrix::AliITSgeomMatrix(){ | |
106 | //////////////////////////////////////////////////////////////////////// | |
107 | // The Default constructor for the AliITSgeomMatrix class. By Default | |
108 | // the angles of rotations are set to zero, meaning that the rotation | |
109 | // matrix is the unit matrix. The translation vector is also set to zero | |
110 | // as are the module id number. The detector type is set to -1 (an undefined | |
111 | // value). The full rotation matrix is kept so that the evaluation | |
112 | // of a coordinate transformation can be done quickly and with a minimum | |
113 | // of CPU overhead. The basic coordinate systems are the ALICE global | |
114 | // coordinate system and the detector local coordinate system. In general | |
115 | // this structure is not limited to just those two coordinate systems. | |
116 | //Begin_Html | |
117 | /* | |
118 | <img src="picts/ITS/AliISgeomMatrix_L1.gif"> | |
119 | */ | |
120 | //End_Html | |
121 | //////////////////////////////////////////////////////////////////////// | |
122 | Int_t i,j; | |
123 | ||
124 | fDetectorIndex = -1; // a value never defined. | |
125 | for(i=0;i<3;i++){ | |
126 | fid[i] = 0; | |
127 | frot[i] = ftran[i] = 0.0; | |
128 | for(j=0;j<3;j++) fm[i][j] = 0.0; | |
d8cc8493 | 129 | fCylR = fCylPhi = 0.0; |
df5240ea | 130 | }// end for i |
131 | fm[0][0] = fm[1][1] = fm[2][2] = 1.0; | |
132 | } | |
133 | //---------------------------------------------------------------------- | |
134 | AliITSgeomMatrix::AliITSgeomMatrix(const AliITSgeomMatrix &sourse){ | |
135 | //////////////////////////////////////////////////////////////////////// | |
136 | // The standard copy constructor. This make a full / proper copy of | |
137 | // this class. | |
138 | //////////////////////////////////////////////////////////////////////// | |
139 | Int_t i,j; | |
140 | ||
141 | this->fDetectorIndex = sourse.fDetectorIndex; | |
142 | for(i=0;i<3;i++){ | |
143 | this->fid[i] = sourse.fid[i]; | |
144 | this->frot[i] = sourse.frot[i]; | |
145 | this->ftran[i] = sourse.ftran[i]; | |
d8cc8493 | 146 | this->fCylR = sourse.fCylR; |
147 | this->fCylPhi = sourse.fCylPhi; | |
df5240ea | 148 | for(j=0;j<3;j++) this->fm[i][j] = sourse.fm[i][j]; |
149 | }// end for i | |
150 | } | |
151 | //---------------------------------------------------------------------- | |
152 | void AliITSgeomMatrix::operator=(const AliITSgeomMatrix &sourse){ | |
153 | //////////////////////////////////////////////////////////////////////// | |
154 | // The standard = operator. This make a full / proper copy of | |
155 | // this class. | |
156 | //////////////////////////////////////////////////////////////////////// | |
157 | Int_t i,j; | |
158 | ||
159 | this->fDetectorIndex = sourse.fDetectorIndex; | |
160 | for(i=0;i<3;i++){ | |
161 | this->fid[i] = sourse.fid[i]; | |
162 | this->frot[i] = sourse.frot[i]; | |
163 | this->ftran[i] = sourse.ftran[i]; | |
d8cc8493 | 164 | this->fCylR = sourse.fCylR; |
165 | this->fCylPhi = sourse.fCylPhi; | |
df5240ea | 166 | for(j=0;j<3;j++) this->fm[i][j] = sourse.fm[i][j]; |
167 | }// end for i | |
168 | } | |
169 | //---------------------------------------------------------------------- | |
170 | AliITSgeomMatrix::AliITSgeomMatrix(const Int_t idt,const Int_t id[3], | |
171 | const Double_t rot[3],const Double_t tran[3]){ | |
172 | //////////////////////////////////////////////////////////////////////// | |
173 | // This is a constructor for the AliITSgeomMatrix class. The matrix is | |
174 | // defined by 3 standard rotation angles [radians], and the translation | |
175 | // vector tran [cm]. In addition the layer, ladder, and detector number | |
176 | // for this particular module and the type of module must be given. | |
177 | // The full rotation matrix is kept so that the evaluation | |
178 | // of a coordinate transformation can be done quickly and with a minimum | |
179 | // of CPU overhead. The basic coordinate systems are the ALICE global | |
180 | // coordinate system and the detector local coordinate system. In general | |
181 | // this structure is not limited to just those two coordinate systems. | |
182 | //Begin_Html | |
183 | /* | |
184 | <img src="picts/ITS/AliISgeomMatrix_L1.gif"> | |
185 | */ | |
186 | //End_Html | |
187 | //////////////////////////////////////////////////////////////////////// | |
d8cc8493 | 188 | Int_t i; |
df5240ea | 189 | |
d8cc8493 | 190 | fDetectorIndex = idt; // a value never defined. |
191 | for(i=0;i<3;i++){ | |
192 | fid[i] = id[i]; | |
193 | frot[i] = rot[i]; | |
194 | ftran[i] = tran[i]; | |
195 | }// end for i | |
196 | fCylR = TMath::Sqrt(ftran[0]*ftran[0]+ftran[1]*ftran[1]); | |
197 | fCylPhi = TMath::ATan2(ftran[1],ftran[0]); | |
198 | if(fCylPhi<0.0) fCylPhi += TMath::Pi(); | |
199 | this->MatrixFromAngle(); | |
df5240ea | 200 | } |
201 | //---------------------------------------------------------------------- | |
202 | AliITSgeomMatrix::AliITSgeomMatrix(const Int_t idt, const Int_t id[3], | |
d962cab4 | 203 | Double_t matrix[3][3], |
df5240ea | 204 | const Double_t tran[3]){ |
205 | //////////////////////////////////////////////////////////////////////// | |
206 | // This is a constructor for the AliITSgeomMatrix class. The rotation matrix | |
207 | // is given as one of the inputs, and the translation vector tran [cm]. In | |
208 | // addition the layer, ladder, and detector number for this particular | |
209 | // module and the type of module must be given. The full rotation matrix | |
210 | // is kept so that the evaluation of a coordinate transformation can be | |
211 | // done quickly and with a minimum of CPU overhead. The basic coordinate | |
212 | // systems are the ALICE global coordinate system and the detector local | |
213 | // coordinate system. In general this structure is not limited to just | |
214 | // those two coordinate systems. | |
215 | //Begin_Html | |
216 | /* | |
217 | <img src="picts/ITS/AliISgeomMatrix_L1.gif"> | |
218 | */ | |
219 | //End_Html | |
220 | //////////////////////////////////////////////////////////////////////// | |
d8cc8493 | 221 | Int_t i,j; |
df5240ea | 222 | |
d8cc8493 | 223 | fDetectorIndex = idt; // a value never defined. |
224 | for(i=0;i<3;i++){ | |
225 | fid[i] = id[i]; | |
226 | ftran[i] = tran[i]; | |
227 | for(j=0;j<3;j++) fm[i][j] = matrix[i][j]; | |
228 | }// end for i | |
229 | fCylR = TMath::Sqrt(ftran[0]*ftran[0]+ftran[1]*ftran[1]); | |
230 | fCylPhi = TMath::ATan2(ftran[1],ftran[0]); | |
231 | if(fCylPhi<0.0) fCylPhi += TMath::Pi(); | |
232 | this->AngleFromMatrix(); | |
df5240ea | 233 | } |
234 | //---------------------------------------------------------------------- | |
235 | void AliITSgeomMatrix::SixAnglesFromMatrix(Double_t *ang){ | |
236 | //////////////////////////////////////////////////////////////////////// | |
237 | // This function returns the 6 GEANT 3.21 rotation angles [degrees] in | |
238 | // the array ang which must be at least [6] long. | |
239 | //////////////////////////////////////////////////////////////////////// | |
240 | Double_t si,c=180./TMath::Pi(); | |
241 | ||
242 | ang[1] = TMath::ATan2(fm[0][1],fm[0][0]); | |
243 | if(TMath::Cos(ang[1])!=0.0) si = fm[0][0]/TMath::Cos(ang[1]); | |
244 | else si = fm[0][1]/TMath::Sin(ang[1]); | |
245 | ang[0] = TMath::ATan2(si,fm[0][2]); | |
246 | ||
247 | ang[3] = TMath::ATan2(fm[1][1],fm[1][0]); | |
248 | if(TMath::Cos(ang[3])!=0.0) si = fm[1][0]/TMath::Cos(ang[3]); | |
249 | else si = fm[1][1]/TMath::Sin(ang[3]); | |
3f616de1 | 250 | ang[2] = TMath::ATan2(si,fm[1][2]); |
df5240ea | 251 | |
3f616de1 | 252 | ang[5] = TMath::ATan2(fm[2][1],fm[2][0]); |
253 | if(TMath::Cos(ang[5])!=0.0) si = fm[2][0]/TMath::Cos(ang[5]); | |
254 | else si = fm[2][1]/TMath::Sin(ang[5]); | |
255 | ang[4] = TMath::ATan2(si,fm[2][2]); | |
df5240ea | 256 | |
257 | for(Int_t i=0;i<6;i++) {ang[i] *= c; if(ang[i]<0.0) ang[i] += 360.;} | |
258 | } | |
259 | //---------------------------------------------------------------------- | |
260 | void AliITSgeomMatrix::MatrixFromSixAngles(const Double_t *ang){ | |
261 | //////////////////////////////////////////////////////////////////////// | |
262 | // Given the 6 GEANT 3.21 rotation angles [degree], this will compute and | |
263 | // set the rotations matrix and 3 standard rotation angles [radians]. | |
264 | // These angles and rotation matrix are overwrite the existing values in | |
265 | // this class. | |
266 | //////////////////////////////////////////////////////////////////////// | |
267 | Int_t i,j; | |
268 | Double_t si,lr[9],c=TMath::Pi()/180.; | |
269 | ||
270 | si = TMath::Sin(c*ang[0]); | |
271 | if(ang[0]== 90.0) si = +1.0; | |
272 | if(ang[0]==270.0) si = -1.0; | |
273 | if(ang[0]== 0.0||ang[0]==180.) si = 0.0; | |
274 | lr[0] = si * TMath::Cos(c*ang[1]); | |
275 | lr[1] = si * TMath::Sin(c*ang[1]); | |
276 | lr[2] = TMath::Cos(c*ang[0]); | |
277 | if(ang[0]== 90.0||ang[0]==270.) lr[2] = 0.0; | |
278 | if(ang[0]== 0.0) lr[2] = +1.0; | |
279 | if(ang[0]==180.0) lr[2] = -1.0; | |
280 | // | |
281 | si = TMath::Sin(c*ang[2]); | |
282 | if(ang[2]== 90.0) si = +1.0; | |
283 | if(ang[2]==270.0) si = -1.0; | |
284 | if(ang[2]== 0.0||ang[2]==180.) si = 0.0; | |
285 | lr[3] = si * TMath::Cos(c*ang[3]); | |
286 | lr[4] = si * TMath::Sin(c*ang[3]); | |
287 | lr[5] = TMath::Cos(c*ang[2]); | |
288 | if(ang[2]== 90.0||ang[2]==270.) lr[5] = 0.0; | |
289 | if(ang[2]== 0.0) lr[5] = +1.0; | |
290 | if(ang[2]==180.0) lr[5] = -1.0; | |
291 | // | |
292 | si = TMath::Sin(c*ang[4]); | |
293 | if(ang[4]== 90.0) si = +1.0; | |
294 | if(ang[4]==270.0) si = -1.0; | |
295 | if(ang[4]== 0.0||ang[4]==180.) si = 0.0; | |
296 | lr[6] = si * TMath::Cos(c*ang[5]); | |
297 | lr[7] = si * TMath::Sin(c*ang[5]); | |
298 | lr[8] = TMath::Cos(c*ang[4]); | |
299 | if(ang[4]== 90.0||ang[4]==270.0) lr[8] = 0.0; | |
300 | if(ang[4]== 0.0) lr[8] = +1.0; | |
301 | if(ang[4]==180.0) lr[8] = -1.0; | |
302 | // Normalize these elements and fill matrix fm. | |
303 | for(i=0;i<3;i++){// reuse si. | |
304 | si = 0.0; | |
305 | for(j=0;j<3;j++) si += lr[3*i+j]*lr[3*i+j]; | |
306 | si = TMath::Sqrt(1./si); | |
307 | for(j=0;j<3;j++) fm[i][j] = si*lr[3*i+j]; | |
308 | } // end for i | |
309 | this->AngleFromMatrix(); | |
310 | } | |
311 | //---------------------------------------------------------------------- | |
312 | AliITSgeomMatrix::AliITSgeomMatrix(const Double_t rotd[6]/*degrees*/, | |
313 | const Int_t idt,const Int_t id[3], | |
314 | const Double_t tran[3]){ | |
315 | //////////////////////////////////////////////////////////////////////// | |
316 | // This is a constructor for the AliITSgeomMatrix class. The matrix is | |
317 | // defined by the 6 GEANT 3.21 rotation angles [degrees], and the translation | |
318 | // vector tran [cm]. In addition the layer, ladder, and detector number | |
319 | // for this particular module and the type of module must be given. | |
320 | // The full rotation matrix is kept so that the evaluation | |
321 | // of a coordinate transformation can be done quickly and with a minimum | |
322 | // of CPU overhead. The basic coordinate systems are the ALICE global | |
323 | // coordinate system and the detector local coordinate system. In general | |
324 | // this structure is not limited to just those two coordinate systems. | |
325 | //Begin_Html | |
326 | /* | |
327 | <img src="picts/ITS/AliISgeomMatrix_L1.gif"> | |
328 | */ | |
329 | //End_Html | |
330 | //////////////////////////////////////////////////////////////////////// | |
331 | Int_t i; | |
332 | ||
333 | fDetectorIndex = idt; // a value never defined. | |
334 | for(i=0;i<3;i++){ | |
335 | fid[i] = id[i]; | |
336 | ftran[i] = tran[i]; | |
337 | }// end for i | |
d8cc8493 | 338 | fCylR = TMath::Sqrt(ftran[0]*ftran[0]+ftran[1]*ftran[1]); |
339 | fCylPhi = TMath::ATan2(ftran[1],ftran[0]); | |
340 | if(fCylPhi<0.0) fCylPhi += TMath::Pi(); | |
df5240ea | 341 | this->MatrixFromSixAngles(rotd); |
342 | } | |
343 | //---------------------------------------------------------------------- | |
344 | void AliITSgeomMatrix::AngleFromMatrix(){ | |
345 | //////////////////////////////////////////////////////////////////////// | |
346 | // Computes the angles from the rotation matrix up to a phase of 180 degrees. | |
347 | //////////////////////////////////////////////////////////////////////// | |
348 | Double_t rx,ry,rz; | |
349 | // get angles from matrix up to a phase of 180 degrees. | |
350 | ||
351 | rx = TMath::ATan2(fm[2][1],fm[2][2]);if(rx<0.0) rx += 2.0*TMath::Pi(); | |
352 | ry = TMath::ASin(fm[0][2]); if(ry<0.0) ry += 2.0*TMath::Pi(); | |
353 | rz = TMath::ATan2(fm[1][1],fm[0][0]);if(rz<0.0) rz += 2.0*TMath::Pi(); | |
354 | frot[0] = rx; | |
355 | frot[1] = ry; | |
356 | frot[2] = rz; | |
357 | return; | |
358 | } | |
359 | //---------------------------------------------------------------------- | |
360 | void AliITSgeomMatrix::MatrixFromAngle(){ | |
361 | //////////////////////////////////////////////////////////////////////// | |
362 | // Computes the Rotation matrix from the angles [radians] kept in this | |
363 | // class. | |
364 | //////////////////////////////////////////////////////////////////////// | |
365 | Double_t sx,sy,sz,cx,cy,cz; | |
366 | ||
367 | sx = TMath::Sin(frot[0]); cx = TMath::Cos(frot[0]); | |
368 | sy = TMath::Sin(frot[1]); cy = TMath::Cos(frot[1]); | |
369 | sz = TMath::Sin(frot[2]); cz = TMath::Cos(frot[2]); | |
370 | fm[0][0] = cz*cy; // fr[0] | |
371 | fm[0][1] = -cz*sy*sx - sz*cx; // fr[1] | |
372 | fm[0][2] = -cz*sy*cx + sz*sx; // fr[2] | |
373 | fm[1][0] = sz*cy; // fr[3] | |
374 | fm[1][1] = -sz*sy*sx + cz*cx; // fr[4] | |
375 | fm[1][2] = -sz*sy*cx - cz*sx; // fr[5] | |
376 | fm[2][0] = sy; // fr[6] | |
377 | fm[2][1] = cy*sx; // fr[7] | |
378 | fm[2][2] = cy*cx; // fr[8] | |
379 | ||
380 | } | |
381 | //---------------------------------------------------------------------- | |
382 | void AliITSgeomMatrix::GtoLPosition(const Double_t g0[3],Double_t l[3]){ | |
383 | //////////////////////////////////////////////////////////////////////// | |
384 | // Returns the local coordinates given the global coordinates [cm]. | |
385 | //////////////////////////////////////////////////////////////////////// | |
386 | Int_t i,j; | |
387 | Double_t g[3]; | |
388 | ||
389 | for(i=0;i<3;i++) g[i] = g0[i] - ftran[i]; | |
390 | for(i=0;i<3;i++){ | |
391 | l[i] = 0.0; | |
392 | for(j=0;j<3;j++) l[i] += fm[i][j]*g[j]; | |
393 | // g = R l + translation | |
394 | } // end for i | |
395 | return; | |
396 | } | |
397 | //---------------------------------------------------------------------- | |
398 | void AliITSgeomMatrix::LtoGPosition(const Double_t l[3],Double_t g[3]){ | |
399 | //////////////////////////////////////////////////////////////////////// | |
400 | // Returns the global coordinates given the local coordinates [cm]. | |
401 | //////////////////////////////////////////////////////////////////////// | |
402 | Int_t i,j; | |
403 | ||
404 | for(i=0;i<3;i++){ | |
405 | g[i] = 0.0; | |
406 | for(j=0;j<3;j++) g[i] += fm[j][i]*l[j]; | |
407 | g[i] += ftran[i]; | |
408 | // g = R^t l + translation | |
409 | } // end for i | |
410 | return; | |
411 | } | |
412 | //---------------------------------------------------------------------- | |
413 | void AliITSgeomMatrix::GtoLMomentum(const Double_t g[3],Double_t l[3]){ | |
414 | //////////////////////////////////////////////////////////////////////// | |
415 | // Returns the local coordinates of the momentum given the global | |
416 | // coordinates of the momentum. It transforms just like GtoLPosition | |
417 | // except that the translation vector is zero. | |
418 | //////////////////////////////////////////////////////////////////////// | |
419 | Int_t i,j; | |
420 | ||
421 | for(i=0;i<3;i++){ | |
422 | l[i] = 0.0; | |
423 | for(j=0;j<3;j++) l[i] += fm[i][j]*g[j]; | |
424 | // g = R l | |
425 | } // end for i | |
426 | return; | |
427 | } | |
428 | //---------------------------------------------------------------------- | |
429 | void AliITSgeomMatrix::LtoGMomentum(const Double_t l[3],Double_t g[3]){ | |
430 | //////////////////////////////////////////////////////////////////////// | |
431 | // Returns the Global coordinates of the momentum given the local | |
432 | // coordinates of the momentum. It transforms just like LtoGPosition | |
433 | // except that the translation vector is zero. | |
434 | //////////////////////////////////////////////////////////////////////// | |
435 | Int_t i,j; | |
436 | ||
437 | for(i=0;i<3;i++){ | |
438 | g[i] = 0.0; | |
439 | for(j=0;j<3;j++) g[i] += fm[j][i]*l[j]; | |
440 | // g = R^t l | |
441 | } // end for i | |
442 | return; | |
443 | } | |
444 | //---------------------------------------------------------------------- | |
8d5bd3f9 | 445 | void AliITSgeomMatrix::GtoLPositionError( Double_t g[3][3], |
df5240ea | 446 | Double_t l[3][3]){ |
447 | //////////////////////////////////////////////////////////////////////// | |
448 | // Given an Uncertainty matrix in Global coordinates it is rotated so that | |
449 | // its representation in local coordinates can be returned. There is no | |
450 | // effect due to the translation vector or its uncertainty. | |
451 | //////////////////////////////////////////////////////////////////////// | |
452 | Int_t i,j,k,m; | |
453 | ||
ecb0c8bc | 454 | for(i=0;i<3;i++)for(m=0;m<3;m++){ |
455 | l[i][m] = 0.0; | |
456 | for(j=0;j<3;j++)for(k=0;k<3;k++) | |
457 | l[i][m] += fm[j][i]*g[j][k]*fm[k][m]; | |
458 | } // end for i,m | |
459 | // g = R^t l R | |
df5240ea | 460 | return; |
461 | } | |
462 | //---------------------------------------------------------------------- | |
8d5bd3f9 | 463 | void AliITSgeomMatrix::LtoGPositionError( Double_t l[3][3], |
df5240ea | 464 | Double_t g[3][3]){ |
465 | //////////////////////////////////////////////////////////////////////// | |
466 | // Given an Uncertainty matrix in Local coordinates it is rotated so that | |
467 | // its representation in global coordinates can be returned. There is no | |
468 | // effect due to the translation vector or its uncertainty. | |
469 | //////////////////////////////////////////////////////////////////////// | |
470 | Int_t i,j,k,m; | |
471 | ||
ecb0c8bc | 472 | for(i=0;i<3;i++)for(m=0;m<3;m++){ |
473 | g[i][m] = 0.0; | |
474 | for(j=0;j<3;j++)for(k=0;k<3;k++) | |
475 | g[i][m] += fm[i][j]*l[j][k]*fm[m][k]; | |
476 | } // end for i,m | |
477 | // g = R l R^t | |
df5240ea | 478 | return; |
479 | } | |
480 | //---------------------------------------------------------------------- | |
481 | void AliITSgeomMatrix::GtoLPositionTracking(const Double_t g0[3], | |
482 | Double_t l[3]){ | |
483 | //////////////////////////////////////////////////////////////////////// | |
484 | // A slightly different coordinate system is used when tracking. | |
485 | // This coordinate system is only relevant when the geometry represents | |
486 | // the cylindrical ALICE ITS geometry. For tracking the Z axis is left | |
487 | // alone but X -> -Y and Y -> X such that X always points out of the | |
488 | // ITS Cylinder for every layer including layer 1 (where the detector | |
489 | // are mounted upside down). | |
490 | //Begin_Html | |
491 | /* | |
492 | <img src="picts/ITS/AliITSgeomMatrix_T1.gif"> | |
493 | */ | |
494 | //End_Html | |
495 | //////////////////////////////////////////////////////////////////////// | |
496 | Double_t l0[3]; | |
497 | ||
498 | this->GtoLPosition(g0,l0); | |
499 | if(fid[0]==1){ // for layer 1 the detector are flipped upside down | |
500 | // with respect to the others. | |
501 | l[0] = +l0[1]; | |
502 | l[1] = -l0[0]; | |
503 | l[2] = +l0[2]; | |
504 | }else{ | |
505 | l[0] = -l0[1]; | |
506 | l[1] = +l0[0]; | |
507 | l[2] = +l0[2]; | |
508 | } // end if | |
509 | return; | |
510 | } | |
511 | //---------------------------------------------------------------------- | |
512 | void AliITSgeomMatrix::LtoGPositionTracking(const Double_t l[3], | |
513 | Double_t g[3]){ | |
514 | //////////////////////////////////////////////////////////////////////// | |
515 | // A slightly different coordinate system is used when tracking. | |
516 | // This coordinate system is only relevant when the geometry represents | |
517 | // the cylindrical ALICE ITS geometry. For tracking the Z axis is left | |
518 | // alone but X -> -Y and Y -> X such that X always points out of the | |
519 | // ITS Cylinder for every layer including layer 1 (where the detector | |
520 | // are mounted upside down). | |
521 | //Begin_Html | |
522 | /* | |
523 | <img src="picts/ITS/AliITSgeomMatrix_T1.gif"> | |
524 | */ | |
525 | //End_Html | |
526 | //////////////////////////////////////////////////////////////////////// | |
527 | Double_t l0[3]; | |
528 | ||
529 | if(fid[0]==1){ // for layer 1 the detector are flipped upside down | |
530 | // with respect to the others. | |
531 | l0[0] = -l[1]; | |
532 | l0[1] = +l[0]; | |
533 | l0[2] = +l[2]; | |
534 | }else{ | |
535 | l0[0] = +l[1]; | |
536 | l0[1] = -l[0]; | |
537 | l0[2] = +l[2]; | |
538 | } // end if | |
539 | this->LtoGPosition(l0,g); | |
540 | return; | |
541 | } | |
542 | //---------------------------------------------------------------------- | |
543 | void AliITSgeomMatrix::GtoLMomentumTracking(const Double_t g[3], | |
544 | Double_t l[3]){ | |
545 | //////////////////////////////////////////////////////////////////////// | |
546 | // A slightly different coordinate system is used when tracking. | |
547 | // This coordinate system is only relevant when the geometry represents | |
548 | // the cylindrical ALICE ITS geometry. For tracking the Z axis is left | |
549 | // alone but X -> -Y and Y -> X such that X always points out of the | |
550 | // ITS Cylinder for every layer including layer 1 (where the detector | |
551 | // are mounted upside down). | |
552 | //Begin_Html | |
553 | /* | |
554 | <img src="picts/ITS/AliITSgeomMatrix_T1.gif"> | |
555 | */ | |
556 | //End_Html | |
557 | //////////////////////////////////////////////////////////////////////// | |
558 | Double_t l0[3]; | |
559 | ||
560 | this->GtoLMomentum(g,l0); | |
561 | if(fid[0]==1){ // for layer 1 the detector are flipped upside down | |
562 | // with respect to the others. | |
563 | l[0] = +l0[1]; | |
564 | l[1] = -l0[0]; | |
565 | l[2] = +l0[2]; | |
566 | }else{ | |
567 | l[0] = -l0[1]; | |
568 | l[1] = +l0[0]; | |
569 | l[2] = +l0[2]; | |
570 | } // end if | |
571 | return; | |
df5240ea | 572 | } |
573 | //---------------------------------------------------------------------- | |
574 | void AliITSgeomMatrix::LtoGMomentumTracking(const Double_t l[3], | |
575 | Double_t g[3]){ | |
576 | //////////////////////////////////////////////////////////////////////// | |
577 | // A slightly different coordinate system is used when tracking. | |
578 | // This coordinate system is only relevant when the geometry represents | |
579 | // the cylindrical ALICE ITS geometry. For tracking the Z axis is left | |
580 | // alone but X -> -Y and Y -> X such that X always points out of the | |
581 | // ITS Cylinder for every layer including layer 1 (where the detector | |
582 | // are mounted upside down). | |
583 | //Begin_Html | |
584 | /* | |
585 | <img src="picts/ITS/AliITSgeomMatrix_T1.gif"> | |
586 | */ | |
587 | //End_Html | |
588 | //////////////////////////////////////////////////////////////////////// | |
589 | Double_t l0[3]; | |
590 | ||
591 | if(fid[0]==1){ // for layer 1 the detector are flipped upside down | |
592 | // with respect to the others. | |
593 | l0[0] = -l[1]; | |
594 | l0[1] = +l[0]; | |
595 | l0[2] = +l[2]; | |
596 | }else{ | |
597 | l0[0] = +l[1]; | |
598 | l0[1] = -l[0]; | |
599 | l0[2] = +l[2]; | |
600 | } // end if | |
601 | this->LtoGMomentum(l0,g); | |
602 | return; | |
603 | } | |
604 | //---------------------------------------------------------------------- | |
8d5bd3f9 | 605 | void AliITSgeomMatrix::GtoLPositionErrorTracking( Double_t g[3][3], |
df5240ea | 606 | Double_t l[3][3]){ |
607 | //////////////////////////////////////////////////////////////////////// | |
608 | // A slightly different coordinate system is used when tracking. | |
609 | // This coordinate system is only relevant when the geometry represents | |
610 | // the cylindrical ALICE ITS geometry. For tracking the Z axis is left | |
611 | // alone but X -> -Y and Y -> X such that X always points out of the | |
612 | // ITS Cylinder for every layer including layer 1 (where the detector | |
613 | // are mounted upside down). | |
614 | //Begin_Html | |
615 | /* | |
616 | <img src="picts/ITS/AliITSgeomMatrix_T1.gif"> | |
617 | */ | |
618 | //End_Html | |
619 | //////////////////////////////////////////////////////////////////////// | |
620 | Int_t i,j,k,m; | |
85f1e34a | 621 | Double_t rt[3][3]; |
622 | Double_t a0[3][3] = {{0.,+1.,0.},{-1.,0.,0.},{0.,0.,+1.}}; | |
623 | Double_t a1[3][3] = {{0.,-1.,0.},{+1.,0.,0.},{0.,0.,+1.}}; | |
df5240ea | 624 | |
625 | if(fid[0]==1) for(i=0;i<3;i++)for(j=0;j<3;j++)for(k=0;k<3;k++) | |
85f1e34a | 626 | rt[i][k] = a0[i][j]*fm[j][k]; |
df5240ea | 627 | else for(i=0;i<3;i++)for(j=0;j<3;j++)for(k=0;k<3;k++) |
85f1e34a | 628 | rt[i][k] = a1[i][j]*fm[j][k]; |
ecb0c8bc | 629 | for(i=0;i<3;i++)for(m=0;m<3;m++){ |
630 | l[i][m] = 0.0; | |
631 | for(j=0;j<3;j++)for(k=0;k<3;k++) | |
632 | l[i][m] += rt[j][i]*g[j][k]*rt[k][m]; | |
633 | } // end for i,m | |
634 | // g = R^t l R | |
df5240ea | 635 | return; |
636 | } | |
637 | //---------------------------------------------------------------------- | |
8d5bd3f9 | 638 | void AliITSgeomMatrix::LtoGPositionErrorTracking( Double_t l[3][3], |
df5240ea | 639 | Double_t g[3][3]){ |
640 | //////////////////////////////////////////////////////////////////////// | |
641 | // A slightly different coordinate system is used when tracking. | |
642 | // This coordinate system is only relevant when the geometry represents | |
643 | // the cylindrical ALICE ITS geometry. For tracking the Z axis is left | |
644 | // alone but X -> -Y and Y -> X such that X always points out of the | |
645 | // ITS Cylinder for every layer including layer 1 (where the detector | |
646 | // are mounted upside down). | |
647 | //Begin_Html | |
648 | /* | |
649 | <img src="picts/ITS/AliITSgeomMatrix_T1.gif"> | |
650 | */ | |
651 | //End_Html | |
652 | //////////////////////////////////////////////////////////////////////// | |
653 | Int_t i,j,k,m; | |
85f1e34a | 654 | Double_t rt[3][3]; |
655 | Double_t a0[3][3] = {{0.,+1.,0.},{-1.,0.,0.},{0.,0.,+1.}}; | |
656 | Double_t a1[3][3] = {{0.,-1.,0.},{+1.,0.,0.},{0.,0.,+1.}}; | |
df5240ea | 657 | |
658 | if(fid[0]==1) for(i=0;i<3;i++)for(j=0;j<3;j++)for(k=0;k<3;k++) | |
85f1e34a | 659 | rt[i][k] = a0[i][j]*fm[j][k]; |
df5240ea | 660 | else for(i=0;i<3;i++)for(j=0;j<3;j++)for(k=0;k<3;k++) |
85f1e34a | 661 | rt[i][k] = a1[i][j]*fm[j][k]; |
ecb0c8bc | 662 | for(i=0;i<3;i++)for(m=0;m<3;m++){ |
663 | g[i][m] = 0.0; | |
664 | for(j=0;j<3;j++)for(k=0;k<3;k++) | |
665 | g[i][m] += rt[i][j]*l[j][k]*rt[m][k]; | |
666 | } // end for i,m | |
667 | // g = R l R^t | |
df5240ea | 668 | return; |
669 | } | |
670 | //---------------------------------------------------------------------- | |
671 | void AliITSgeomMatrix::PrintTitles(ostream *os){ | |
672 | //////////////////////////////////////////////////////////////////////// | |
673 | // Standard output format for this class but it includes variable | |
674 | // names and formatting that makes it easer to read. | |
675 | //////////////////////////////////////////////////////////////////////// | |
676 | Int_t i,j; | |
677 | ||
678 | *os << "fDetectorIndex=" << fDetectorIndex << " fid[3]={"; | |
679 | for(i=0;i<3;i++) *os << fid[i] << " "; | |
680 | *os << "} frot[3]={"; | |
681 | for(i=0;i<3;i++) *os << frot[i] << " "; | |
682 | *os << "} ftran[3]={"; | |
683 | for(i=0;i<3;i++) *os << ftran[i] << " "; | |
684 | *os << "} fm[3][3]={"; | |
685 | for(i=0;i<3;i++){for(j=0;j<3;j++){ *os << fm[i][j] << " ";} *os <<"}{";} | |
686 | *os << "}" << endl; | |
687 | return; | |
688 | } | |
689 | //---------------------------------------------------------------------- | |
8253cd9a | 690 | void AliITSgeomMatrix::PrintComment(ostream *os){ |
691 | //////////////////////////////////////////////////////////////////////// | |
692 | // output format used by Print.. | |
693 | //////////////////////////////////////////////////////////////////////// | |
694 | *os << "fDetectorIndex fid[0] fid[1] fid[2] ftran[0] ftran[1] ftran[2] "; | |
695 | *os << "fm[0][0] fm[0][1] fm[0][2] fm[1][0] fm[1][1] fm[1][2] "; | |
696 | *os << "fm[2][0] fm[2][1] fm[2][2] "; | |
697 | return; | |
698 | } | |
699 | //---------------------------------------------------------------------- | |
700 | void AliITSgeomMatrix::Print(ostream *os){ | |
df5240ea | 701 | //////////////////////////////////////////////////////////////////////// |
702 | // Standard output format for this class. | |
703 | //////////////////////////////////////////////////////////////////////// | |
704 | Int_t i,j; | |
431a7819 | 705 | #if defined __GNUC__ |
706 | #if __GNUC__ > 2 | |
707 | ios::fmtflags fmt; | |
708 | #else | |
709 | Int_t fmt; | |
710 | #endif | |
94831058 | 711 | #else |
712 | #if defined __ICC | |
713 | ios::fmtflags fmt; | |
431a7819 | 714 | #else |
31b8cd63 | 715 | Int_t fmt; |
94831058 | 716 | #endif |
431a7819 | 717 | #endif |
df5240ea | 718 | |
8253cd9a | 719 | fmt = os->setf(ios::scientific); // set scientific floating point output |
df5240ea | 720 | *os << fDetectorIndex << " "; |
721 | for(i=0;i<3;i++) *os << fid[i] << " "; | |
8253cd9a | 722 | // for(i=0;i<3;i++) *os << frot[i] << " "; // Redundant with fm[][]. |
723 | for(i=0;i<3;i++) *os << setprecision(16) << ftran[i] << " "; | |
724 | for(i=0;i<3;i++)for(j=0;j<3;j++) *os << setprecision(16) << | |
725 | fm[i][j] << " "; | |
df5240ea | 726 | *os << endl; |
8253cd9a | 727 | os->flags(fmt); // reset back to old formating. |
df5240ea | 728 | return; |
729 | } | |
730 | //---------------------------------------------------------------------- | |
8253cd9a | 731 | void AliITSgeomMatrix::Read(istream *is){ |
df5240ea | 732 | //////////////////////////////////////////////////////////////////////// |
733 | // Standard input format for this class. | |
734 | //////////////////////////////////////////////////////////////////////// | |
735 | Int_t i,j; | |
736 | ||
737 | *is >> fDetectorIndex; | |
738 | for(i=0;i<3;i++) *is >> fid[i]; | |
8253cd9a | 739 | // for(i=0;i<3;i++) *is >> frot[i]; // Redundant with fm[][]. |
df5240ea | 740 | for(i=0;i<3;i++) *is >> ftran[i]; |
741 | for(i=0;i<3;i++)for(j=0;j<3;j++) *is >> fm[i][j]; | |
8253cd9a | 742 | AngleFromMatrix(); // compute angles frot[]. |
d8cc8493 | 743 | fCylR = TMath::Sqrt(ftran[0]*ftran[0]+ftran[1]*ftran[1]); |
744 | fCylPhi = TMath::ATan2(ftran[1],ftran[0]); | |
745 | if(fCylPhi<0.0) fCylPhi += TMath::Pi(); | |
df5240ea | 746 | return; |
747 | } | |
d8cc8493 | 748 | //______________________________________________________________________ |
749 | void AliITSgeomMatrix::Streamer(TBuffer &R__b){ | |
750 | // Stream an object of class AliITSgeomMatrix. | |
751 | ||
752 | if (R__b.IsReading()) { | |
753 | AliITSgeomMatrix::Class()->ReadBuffer(R__b, this); | |
754 | fCylR = TMath::Sqrt(ftran[0]*ftran[0]+ftran[1]*ftran[1]); | |
755 | fCylPhi = TMath::ATan2(ftran[1],ftran[0]); | |
756 | this->AngleFromMatrix(); | |
757 | if(fCylPhi<0.0) fCylPhi += TMath::Pi(); | |
758 | } else { | |
759 | AliITSgeomMatrix::Class()->WriteBuffer(R__b, this); | |
760 | } | |
761 | } | |
df5240ea | 762 | //---------------------------------------------------------------------- |
763 | ostream &operator<<(ostream &os,AliITSgeomMatrix &p){ | |
764 | //////////////////////////////////////////////////////////////////////// | |
765 | // Standard output streaming function. | |
766 | //////////////////////////////////////////////////////////////////////// | |
767 | ||
8253cd9a | 768 | p.Print(&os); |
df5240ea | 769 | return os; |
770 | } | |
771 | //---------------------------------------------------------------------- | |
772 | istream &operator>>(istream &is,AliITSgeomMatrix &r){ | |
773 | //////////////////////////////////////////////////////////////////////// | |
774 | // Standard input streaming function. | |
775 | //////////////////////////////////////////////////////////////////////// | |
776 | ||
8253cd9a | 777 | r.Read(&is); |
df5240ea | 778 | return is; |
779 | } | |
8253cd9a | 780 | //---------------------------------------------------------------------- |