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