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b7943f00 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
18// General Root includes
19//#include <Riostream.h>
20#include <TMath.h>
21#include <TVectorD.h>
22
23// Root Geometry includes
24#include <TGeoManager.h>
25#include <TGeoVolume.h>
26#include <TGeoTube.h>
fa4639a3 27#include <TGeoTorus.h>
b7943f00 28#include <TGeoMatrix.h>
29
30#include "AliITSv11GeomCableRound.h"
31
32//*************************************************************************
33// Class for round cables
34//
35// Ludovic Gaudichet gaudichet@to.infn.it
36//*************************************************************************
37
fa4639a3 38/*
39// ************************************************************************
40// Here is a example on how to use this class
41// ************************************************************************
42
43 // Getting some media
531d6cdc 44 TGeoMedium *air = gGeoManager->GetMedium("ITS_ITSair");
45 TGeoMedium *water = gGeoManager->GetMedium("ITS_WATER");
46 TGeoMedium *alu = gGeoManager->GetMedium("ITS_ITSal");
fa4639a3 47
48 // Creating a small box inside a bigger one (containers)
49 TGeoBBox *box1 = new TGeoBBox("box1", 6,10,10);
50 TGeoBBox *bigBox = new TGeoBBox("bigBox", 20,10,10);
51 TGeoVolume *vbox1 = new TGeoVolume("vbox1", box1, air);
52 TGeoVolume *vBigBox = new TGeoVolume("vBigBox", bigBox, air);
53 vbox1->SetVisibility(kFALSE);
54 vBigBox->SetVisibility(kFALSE);
55
56 TGeoTranslation *tr1 = new TGeoTranslation("negTr",-14,0,0);
57 vBigBox->AddNode(vbox1, 1, tr1);
58 moth->AddNode(vBigBox, 1, 0);
59
60 // **************************************************
61 // Inserting a round cable (or here a water pipe...)
62 // **************************************************
63
64 Int_t waterColor = 7;
65 Int_t aluColor = 5;
66 AliITSv11GeomCableRound roundCable("waterPipe", 0.9); //radius of 0.9cm
67 roundCable.SetNLayers(2);
68 roundCable.SetLayer(0, 0.7, water, waterColor); // radius of 0.7cm
69 roundCable.SetLayer(1, 0.2, alu, aluColor); // thickness of 0.2cm
70
71 // ****** Set check points and their containers ******
72 // The 2 first points are in the small box (vbox1)
73 // The second point is at the boundary
74
75 Double_t coord0[3] = {0,-2,-2};
76 Double_t coord1[3] = {6,2,1};
77 Double_t vect0[3] = {1,1,0};
78 Double_t vect1[3] = {1,0,0};
79 // coordinates have to be given in the specified container
80 // reference system (here it's going to be vbox1).
81 // vect1 and vect2 are vectors perpendicular to the segment ends
82 // (These vectors don't need to be normalized)
83 roundCable.AddCheckPoint( vbox1, 0, coord0, vect0);
84 roundCable.AddCheckPoint( vbox1, 1, coord1, vect1);
85
86 // Then, let's cross the boundary ! You just need
87 // to put the next point in the other volume, vBigBox.
88 // At the moment of creating the second segment, it will
89 // be inserted in this volume. That is why the point 1 had to
90 // be at the boundary, because otherwise the second segment
91 // between de points 1 and 2 would have been inserted in the
92 // vBigBox but in the same time would have cross its
93 // boundary ...
94 Double_t coord2[3] = {-2,6,4}; // coord. syst. of vBigBox !
95 Double_t vect2[3]= {1,1,0.5};
96 roundCable.AddCheckPoint( vBigBox, 2, coord2, vect2);
97
98 Double_t coord3[3] = {4,6,4};
99 Double_t vect3[3]= {-1,0,0};
100 roundCable.AddCheckPoint( vBigBox, 3, coord3, vect3);
101
102 Double_t coord4[3] = {4,0,-4};
103 Double_t vect4[3]= {1,0,0};
104 roundCable.AddCheckPoint( vBigBox, 4, coord4, vect4);
105
106 Double_t coord5[3] = {4,-6,4};
107 Double_t vect5[3]= {1,0,0};
108 roundCable.AddCheckPoint( vBigBox, 5, coord5, vect5);
109
110 Double_t coord6[3] = {7,-6,4};
111 Double_t vect6[3]= {1,0,0};
112 roundCable.AddCheckPoint( vBigBox, 6, coord6, vect6);
113
114 Double_t r = 7;
115 Double_t angle = 70*TMath::DegToRad();
116 Double_t coord7[3] = {coord6[0] +r*sin(angle), coord6[1],
117 coord6[2] -r*(1-cos(angle)) };
118 Double_t vect7[3]= {r*cos(angle),0,-r*sin(angle)};
119 roundCable.AddCheckPoint( vBigBox, 7, coord7, vect7);
120
121 Double_t coord8[3] = { coord7[0]+vect7[0], coord7[1]+vect7[1],-10};
122 Double_t vect8[3]= {0,0,1};
123 roundCable.AddCheckPoint( vBigBox, 8, coord8, vect8);
124
125 // ****** Creating the corresponding volume ******
126 // Since the container volumes of the check points have
127 // been recorded, this can be done at any moments, providing
128 // that the container volumes are found in the sub-nodes
129 // of the initial node (the top volume of the TGeoManager or
130 // the volume set in SetInitialNode(TGeoVolume*) function)
131
132 roundCable.SetInitialNode(vBigBox); //Set the root node
133 roundCable.CreateAndInsertCableSegment( 1);
134 // This command means : create the segment between point 0
135 // and point 1. The segment is automatically inserted in the
136 // container volume of point 1.
137
138 roundCable.CreateAndInsertCableSegment( 2);
139 roundCable.CreateAndInsertCableSegment( 3);
140
141 // The following segment is going to be a torus segment.
142 // The radius and position of the torus is defined by the
143 // orthogonal vector of point 4 (the orientation of this vector
144 // and the position of the 2 check points are enough to define
145 // completely the torus)
146 roundCable.CreateAndInsertTorusSegment( 4, 180);
147 // The second argument is an additionnal rotation of the
148 // segment around the axis defined by the 2 check points.
149
150 roundCable.CreateAndInsertTorusSegment( 5);
151 roundCable.CreateAndInsertCableSegment( 6);
152 roundCable.CreateAndInsertTorusSegment( 7,180);
153 roundCable.CreateAndInsertCableSegment( 8);
154
155*/
156
157
158
b7943f00 159ClassImp(AliITSv11GeomCableRound)
160
161//________________________________________________________________________
162AliITSv11GeomCableRound::
163AliITSv11GeomCableRound(const char* name, Double_t radius) :
33ddec7d 164 AliITSv11GeomCable(name),
165 fRadius(radius),
166 fNlayer(0),
167 fPhiMin(0),
168 fPhiMax(360)
169 {
b7943f00 170 // Constructor
b7943f00 171 for (Int_t i=0; i<fgkCableMaxLayer ; i++) {
172 fLayThickness[i] = 0;
173 fLayColor[i] = 0;
174 fLayMedia[i] = 0;
175 };
5d7a6c6d 176}
b7943f00 177
178//________________________________________________________________________
179AliITSv11GeomCableRound::AliITSv11GeomCableRound(const AliITSv11GeomCableRound &s) :
180 AliITSv11GeomCable(s),fRadius(s.fRadius),fNlayer(s.fNlayer),fPhiMin(s.fPhiMin),
181 fPhiMax(s.fPhiMax)
182{
183 // Copy Constructor
184 for (Int_t i=0; i<s.fNlayer; i++) {
185 fLayThickness[i] = s.fLayThickness[i];
186 fLayMedia[i] = s.fLayMedia[i];
187 fLayColor[i] = s.fLayColor[i];
188 }
189}
190
191//________________________________________________________________________
192AliITSv11GeomCableRound& AliITSv11GeomCableRound::
193operator=(const AliITSv11GeomCableRound &s) {
194 // Assignment operator
195 // Not fully inplemented yet !!!
196
197 if(&s == this) return *this;
198 *this = s;
199 fRadius = s.fRadius;
200 fPhiMin = s.fPhiMin;
201 fPhiMax = s.fPhiMax;
202 fNlayer = s.fNlayer;
203 for (Int_t i=0; i<s.fNlayer; i++) {
204 fLayThickness[i] = s.fLayThickness[i];
205 fLayMedia[i] = s.fLayMedia[i];
206 fLayColor[i] = s.fLayColor[i];
207 };
208 return *this;
209}
210
211//________________________________________________________________________
212Int_t AliITSv11GeomCableRound::GetPoint( Int_t iCheckPt, Double_t *coord)
213 const {
214 // Get check point #iCheckPt
215 TVectorD *coordVector =(TVectorD *)fPointArray.UncheckedAt(2*iCheckPt);
5d7a6c6d 216#if ROOT_VERSION_CODE < ROOT_VERSION(4,0,0)
217 CopyFrom(coord, coordVector->GetElements());
218#else
b7943f00 219 CopyFrom(coord, coordVector->GetMatrixArray());
5d7a6c6d 220#endif
b7943f00 221 return kTRUE;
5d7a6c6d 222}
b7943f00 223
224//________________________________________________________________________
225Int_t AliITSv11GeomCableRound::GetVect( Int_t iCheckPt, Double_t *coord)
226 const {
227 //
228 // Get vector transverse to the section at point #iCheckPt
229 //
230
231 TVectorD *coordVector =(TVectorD *)fPointArray.UncheckedAt(2*iCheckPt+1);
5d7a6c6d 232#if ROOT_VERSION_CODE < ROOT_VERSION(4,0,0)
233 CopyFrom(coord, coordVector->GetElements());
234#else
b7943f00 235 CopyFrom(coord, coordVector->GetMatrixArray());
5d7a6c6d 236#endif
b7943f00 237 return kTRUE;
5d7a6c6d 238}
239
b7943f00 240//________________________________________________________________________
241void AliITSv11GeomCableRound::AddCheckPoint( TGeoVolume *vol, Int_t iCheckPt,
242 Double_t *coord, Double_t *orthVect)
243{
244 //
245 // Add point #iCheckPt and its transverse vector. Point is added at (i) in
246 // fPointArray and the vector is added at (i+1)
247 //
248
249
250 if (iCheckPt>=fVolumeArray.GetEntriesFast()) {
251 fVolumeArray.AddLast(vol);
252 TVectorD *point = new TVectorD(3,coord);
253 TVectorD *vect = new TVectorD(3,orthVect);
254 fPointArray.AddLast(point);
255 fPointArray.AddLast(vect);
256
257 } else if ((iCheckPt >= 0)&&(iCheckPt < fVolumeArray.GetEntriesFast())) {
258 fVolumeArray.AddAt(vol, iCheckPt);
259 TVectorD *point = new TVectorD(3,coord);
260 TVectorD *vect = new TVectorD(3,orthVect);
261 fPointArray.AddAt(point, iCheckPt*2 );
262 fPointArray.AddAt(vect, iCheckPt*2+1);
263 };
5d7a6c6d 264}
b7943f00 265
266//________________________________________________________________________
267void AliITSv11GeomCableRound::PrintCheckPoints() const {
268 // Print all check points
269
270 printf(" ---\n Printing all check points of the round cable\n");
271 for (Int_t i = 0; i<fVolumeArray.GetEntriesFast(); i++) {
272 TVectorD *coordVector = (TVectorD *)fPointArray.UncheckedAt(i*2);
273 //TVectorD *vectVector = (TVectorD *)fPointArray.UncheckedAt(i*2+1);
274 Double_t coord[3];
5d7a6c6d 275#if ROOT_VERSION_CODE < ROOT_VERSION(4,0,0)
276 CopyFrom(coord, coordVector->GetElements());
277#else
b7943f00 278 CopyFrom(coord, coordVector->GetMatrixArray());
5d7a6c6d 279#endif
b7943f00 280 printf(" ( %.2f, %.2f, %.2f )\n", coord[0], coord[1], coord[2]);
281 };
5d7a6c6d 282}
b7943f00 283
fa4639a3 284
b7943f00 285//________________________________________________________________________
286Int_t AliITSv11GeomCableRound::CreateAndInsertCableSegment(Int_t p2)
287{
288// Creates a cable segment between points p1 and p2.
b7943f00 289//
290// The segment volume is created inside the volume containing point2
291// Therefore this segment should be defined in this volume only.
292// I mean here that, if the previous point is in another volume,
293// it should be just at the border between the 2 volumes. Also the
294// orientation vector of the previous point should be othogonal to
295// the surface between the 2 volumes.
296
297 TGeoNode *mainNode;
298 if (fInitialNode==0) {
299 TObjArray *nodes = gGeoManager->GetListOfNodes();
300 if (nodes->GetEntriesFast()==0) return kFALSE;
301 mainNode = (TGeoNode *) nodes->UncheckedAt(0);
302 } else {
303 mainNode = fInitialNode;
304 };
305
306 Int_t p1 = p2 - 1;
307 TGeoVolume *p1Vol = GetVolume(p1);
308 TGeoVolume *p2Vol = GetVolume(p2);
309
310 ResetCheckDaughter();
311 fCurrentVol = p1Vol;
312 if (! CheckDaughter(mainNode)) {
313 printf("Error::volume containing point is not visible in node tree!\n");
314 return kFALSE;
315 };
316
317 Double_t coord1[3], coord2[3], vect1[3], vect2[3];
318 //=================================================
319 // Get p1 position in the systeme of p2
320 if (p1Vol!=p2Vol) {
321
322 Int_t p1nodeInd[fgkCableMaxNodeLevel];
323 for (Int_t i=0; i<fgkCableMaxNodeLevel; i++) p1nodeInd[i]=fNodeInd[i];
324 Int_t p1volLevel = 0;
325 while (p1nodeInd[p1volLevel]!=-1) p1volLevel++;
326 p1volLevel--;
327
328 ResetCheckDaughter();
329 fCurrentVol = p2Vol;
330 if (! CheckDaughter(mainNode)) {
331 printf("Error::volume containing point is not visible in node tree!\n");
332 return kFALSE;
333 };
334 Int_t p2nodeInd[fgkCableMaxNodeLevel];
335 for (Int_t i=0; i<fgkCableMaxNodeLevel; i++) p2nodeInd[i]=fNodeInd[i];
336 Int_t commonMotherLevel = 0;
337 while (p1nodeInd[commonMotherLevel]==fNodeInd[commonMotherLevel])
338 commonMotherLevel++;
339 commonMotherLevel--;
340 Int_t p2volLevel = 0;
341 while (fNodeInd[p2volLevel]!=-1) p2volLevel++;
342 p2volLevel--;
343
344 // Get coord and vect of p1 in the common mother reference system
345 GetCheckPoint(p1, 0, p1volLevel-commonMotherLevel, coord1);
346 GetCheckVect( p1, 0, p1volLevel-commonMotherLevel, vect1);
347 // Translate them in the reference system of the volume containing p2
348 TGeoNode *pathNode[fgkCableMaxNodeLevel];
349 pathNode[0] = mainNode;
350 for (Int_t i=0; i<=p2volLevel; i++) {
351 pathNode[i+1] = pathNode[i]->GetDaughter(p2nodeInd[i]);
352 };
353 Double_t globalCoord1[3] = {coord1[0], coord1[1], coord1[2]};
354 Double_t globalVect1[3] = {vect1[0], vect1[1], vect1[2]};
355
356 for (Int_t i = commonMotherLevel+1; i<=p2volLevel; i++) {
357 pathNode[i+1]->GetMatrix()->MasterToLocal(globalCoord1, coord1);
358 pathNode[i+1]->GetMatrix()->MasterToLocalVect(globalVect1, vect1);
359 CopyFrom(globalCoord1, coord1);
360 CopyFrom(globalVect1, vect1);
361 };
362 } else {
363 GetCheckPoint(p1, 0, 0, coord1);
364 GetCheckVect(p1, 0, 0, vect1);
365 };
366
367 //=================================================
368 // Get p2 position in the systeme of p2
369 GetCheckPoint(p2, 0, 0, coord2);
370 GetCheckVect(p2, 0, 0, vect2);
371
372 Double_t cx = (coord1[0]+coord2[0])/2;
373 Double_t cy = (coord1[1]+coord2[1])/2;
374 Double_t cz = (coord1[2]+coord2[2])/2;
375 Double_t dx = coord2[0]-coord1[0];
376 Double_t dy = coord2[1]-coord1[1];
377 Double_t dz = coord2[2]-coord1[2];
378
379 //=================================================
380 // Positionning of the segment between the 2 points
381 if ((dy<1e-31)&&(dy>0)) dy = 1e-31;
382 if ((dz<1e-31)&&(dz>0)) dz = 1e-31;
383 if ((dy>-1e-31)&&(dy<0)) dy = -1e-31;
384 if ((dz>-1e-31)&&(dz<0)) dz = -1e-31;
385
386 Double_t angleRot1 = -TMath::ATan2(dx,dy);
387 Double_t planDiagL = TMath::Sqrt(dy*dy+dx*dx);
388 Double_t angleRotDiag = -TMath::ATan2(planDiagL,dz);
389 TGeoRotation *rot = new TGeoRotation("",angleRot1*TMath::RadToDeg(),
390 angleRotDiag*TMath::RadToDeg(),
391 0);
392 Double_t localVect1[3], localVect2[3];
393 rot->MasterToLocalVect(vect1, localVect1);
394 rot->MasterToLocalVect(vect2, localVect2);
395 TGeoTranslation *trans = new TGeoTranslation("",cx, cy, cz);
396
397 //=================================================
398 // Create the segment and add it to the mother volume
399 TGeoVolume *vCableSeg = CreateSegment(coord1, coord2,
400 localVect1, localVect2);
401
402 TGeoCombiTrans *combi = new TGeoCombiTrans(*trans, *rot);
403 p2Vol->AddNode(vCableSeg, p2, combi);
404 //=================================================
405 delete rot;
406 delete trans;
407
408 if (fDebug) {
409 printf("---\n Cable segment points : ");
410 printf("%f, %f, %f\n",coord1[0], coord1[1], coord1[2]);
411 printf("%f, %f, %f\n",coord2[0], coord2[1], coord2[2]);
412 };
413// #include <TGeoSphere.h>
531d6cdc 414// TGeoMedium *airSDD = gGeoManager->GetMedium("ITS_ITSsddAir");
b7943f00 415// TGeoSphere *sphere = new TGeoSphere(0, 0.15);
416// TGeoVolume *vSphere = new TGeoVolume("", sphere, airSDD);
417// TGeoTranslation *trC = new TGeoTranslation("", cx, cy, cz);
418// TGeoTranslation *tr1 = new TGeoTranslation("",coord1[0],
419// coord1[1],coord1[2]);
420// TGeoTranslation *tr2 = new TGeoTranslation("",coord2[0],
421// coord2[1],coord2[2]);
422// p2Vol->AddNode(vSphere, p2*3-2, trC);
423// p2Vol->AddNode(vSphere, p2*3-1, tr1);
424// p2Vol->AddNode(vSphere, p2*3 , tr2);
425
426 return kTRUE;
5d7a6c6d 427}
b7943f00 428
fa4639a3 429
430//________________________________________________________________________
431Int_t AliITSv11GeomCableRound::CreateAndInsertTorusSegment(Int_t p2, Double_t rotation)
432{
433 // Create a torus cable segment between points p1 and p2.
434 // The radius and position of the torus is defined by the
435 // perpendicular vector of point p2 (the orientation of this vector
436 // and the position of the 2 check points are enough to completely
437 // define the torus)
438
439 TGeoNode *mainNode;
440 if (fInitialNode==0) {
441 TObjArray *nodes = gGeoManager->GetListOfNodes();
442 if (nodes->GetEntriesFast()==0) return kFALSE;
443 mainNode = (TGeoNode *) nodes->UncheckedAt(0);
444 } else {
445 mainNode = fInitialNode;
446 };
447
448 Int_t p1 = p2 - 1;
449 TGeoVolume *p1Vol = GetVolume(p1);
450 TGeoVolume *p2Vol = GetVolume(p2);
451
452 ResetCheckDaughter();
453 fCurrentVol = p1Vol;
454 if (! CheckDaughter(mainNode)) {
455 printf("Error::volume containing point is not visible in node tree!\n");
456 return kFALSE;
457 };
458
459 Double_t coord1[3], coord2[3], vect1[3], vect2[3];
460 //=================================================
461 // Get p1 position in the systeme of p2
462 if (p1Vol!=p2Vol) {
463
464 Int_t p1nodeInd[fgkCableMaxNodeLevel];
465 for (Int_t i=0; i<fgkCableMaxNodeLevel; i++) p1nodeInd[i]=fNodeInd[i];
466 Int_t p1volLevel = 0;
467 while (p1nodeInd[p1volLevel]!=-1) p1volLevel++;
468 p1volLevel--;
469
470 ResetCheckDaughter();
471 fCurrentVol = p2Vol;
472 if (! CheckDaughter(mainNode)) {
473 printf("Error::volume containing point is not visible in node tree!\n");
474 return kFALSE;
475 };
476 Int_t p2nodeInd[fgkCableMaxNodeLevel];
477 for (Int_t i=0; i<fgkCableMaxNodeLevel; i++) p2nodeInd[i]=fNodeInd[i];
478 Int_t commonMotherLevel = 0;
479 while (p1nodeInd[commonMotherLevel]==fNodeInd[commonMotherLevel])
480 commonMotherLevel++;
481 commonMotherLevel--;
482 Int_t p2volLevel = 0;
483 while (fNodeInd[p2volLevel]!=-1) p2volLevel++;
484 p2volLevel--;
485
486 // Get coord and vect of p1 in the common mother reference system
487 GetCheckPoint(p1, 0, p1volLevel-commonMotherLevel, coord1);
488 GetCheckVect( p1, 0, p1volLevel-commonMotherLevel, vect1);
489 // Translate them in the reference system of the volume containing p2
490 TGeoNode *pathNode[fgkCableMaxNodeLevel];
491 pathNode[0] = mainNode;
492 for (Int_t i=0; i<=p2volLevel; i++) {
493 pathNode[i+1] = pathNode[i]->GetDaughter(p2nodeInd[i]);
494 };
495 Double_t globalCoord1[3] = {coord1[0], coord1[1], coord1[2]};
496 Double_t globalVect1[3] = {vect1[0], vect1[1], vect1[2]};
497
498 for (Int_t i = commonMotherLevel+1; i<=p2volLevel; i++) {
499 pathNode[i+1]->GetMatrix()->MasterToLocal(globalCoord1, coord1);
500 pathNode[i+1]->GetMatrix()->MasterToLocalVect(globalVect1, vect1);
501 CopyFrom(globalCoord1, coord1);
502 CopyFrom(globalVect1, vect1);
503 };
504 } else {
505 GetCheckPoint(p1, 0, 0, coord1);
506 GetCheckVect(p1, 0, 0, vect1);
507 };
508
509 //=================================================
510 // Get p2 position in the systeme of p2
511 GetCheckPoint(p2, 0, 0, coord2);
512 GetCheckVect(p2, 0, 0, vect2);
513
514 Double_t cx = (coord1[0]+coord2[0])/2;
515 Double_t cy = (coord1[1]+coord2[1])/2;
516 Double_t cz = (coord1[2]+coord2[2])/2;
517 Double_t dx = coord2[0]-coord1[0];
518 Double_t dy = coord2[1]-coord1[1];
519 Double_t dz = coord2[2]-coord1[2];
520 Double_t length = TMath::Sqrt(dx*dx+dy*dy+dz*dz);
521
522 //=================================================
523 // Positionning of the segment between the 2 points
524 if ((dy<1e-31)&&(dy>0)) dy = 1e-31;
525 if ((dz<1e-31)&&(dz>0)) dz = 1e-31;
526 if ((dy>-1e-31)&&(dy<0)) dy = -1e-31;
527 if ((dz>-1e-31)&&(dz<0)) dz = -1e-31;
528
529 Double_t angleRot1 = -TMath::ATan2(dx,dy);
530 Double_t planDiagL = TMath::Sqrt(dy*dy+dx*dx);
531 Double_t angleRotDiag = -TMath::ATan2(planDiagL,dz);
532
533 TGeoRotation rotTorusTemp("",angleRot1*TMath::RadToDeg(),
534 angleRotDiag*TMath::RadToDeg(),0);
535 TGeoRotation rotTorusToZ("",0,90,0);
536 rotTorusTemp.MultiplyBy(&rotTorusToZ, kTRUE);
537 Double_t localVect2[3];
538 rotTorusTemp.MasterToLocalVect(vect2, localVect2);
539 if (localVect2[1]<0) {
540 localVect2[0] = -localVect2[0];
541 localVect2[1] = -localVect2[1];
542 localVect2[2] = -localVect2[2];
543 };
544 Double_t normVect2 = TMath::Sqrt(localVect2[0]*localVect2[0]+
545 localVect2[1]*localVect2[1]+
546 localVect2[2]*localVect2[2]);
547 Double_t axisX[3] = {1,0,0};
548 Double_t cosangleTorusSeg = (localVect2[0]*axisX[0]+
549 localVect2[1]*axisX[1]+
550 localVect2[2]*axisX[2])/normVect2;
551 Double_t angleTorusSeg = TMath::ACos(cosangleTorusSeg)*TMath::RadToDeg();
552 TGeoRotation rotTorus("",angleRot1*TMath::RadToDeg(),
553 angleRotDiag*TMath::RadToDeg(),
554 180-angleTorusSeg+rotation);
555 rotTorus.MultiplyBy(&rotTorusToZ, kTRUE);
556 rotTorus.MasterToLocalVect(vect2, localVect2);
557 if (localVect2[1]<0) {
558 localVect2[0] = -localVect2[0];
559 localVect2[1] = -localVect2[1];
560 localVect2[2] = -localVect2[2];
561 };
562 normVect2 = TMath::Sqrt(localVect2[0]*localVect2[0]+
563 localVect2[1]*localVect2[1]+
564 localVect2[2]*localVect2[2]);
565 Double_t axisY[3] = {0,1,0};
566 Double_t cosPhi = (localVect2[0]*axisY[0]+localVect2[1]*axisY[1]+
567 localVect2[2]*axisY[2])/normVect2;
568 Double_t torusPhi1 = TMath::ACos(cosPhi);
569 Double_t torusR = (length/2)/TMath::Sin(torusPhi1);
570 torusPhi1 = torusPhi1*TMath::RadToDeg();
571 Double_t perpLength = TMath::Sqrt(torusR*torusR-length*length/4);
572 Double_t localTransT[3] = {-perpLength,0,0};
573 Double_t globalTransT[3];
574 rotTorus.LocalToMasterVect(localTransT, globalTransT);
575 TGeoTranslation transTorus("",cx+globalTransT[0],cy+globalTransT[1],
576 cz+globalTransT[2]);
577
578 TGeoCombiTrans *combiTorus = new TGeoCombiTrans(transTorus, rotTorus);
579
580 //=================================================
581 // Create the segment and add it to the mother volume
582 TGeoVolume *vCableSegT = CreateTorus(torusPhi1, torusR);
583 p2Vol->AddNode(vCableSegT, p2, combiTorus);
584
585 if (fDebug) {
586 printf("---\n Cable segment points : ");
587 printf("%f, %f, %f\n",coord1[0], coord1[1], coord1[2]);
588 printf("%f, %f, %f\n",coord2[0], coord2[1], coord2[2]);
589 };
590
591 return kTRUE;
5d7a6c6d 592}
fa4639a3 593
b7943f00 594//________________________________________________________________________
595TGeoVolume *AliITSv11GeomCableRound::CreateSegment( Double_t *coord1,
596 Double_t *coord2,
597 Double_t *localVect1,
598 Double_t *localVect2 )
599{
fa4639a3 600 // Create one cylindrical segment and its layers
b7943f00 601
602 //=================================================
603 // Calculate segment "deformation"
604 Double_t dx = coord2[0]-coord1[0];
605 Double_t dy = coord2[1]-coord1[1];
606 Double_t dz = coord2[2]-coord1[2];
607 Double_t length = TMath::Sqrt(dx*dx+dy*dy+dz*dz);
608
609 // normal vectors have to point outside the TGeoCtub :
610 if (-localVect1[2]<0) {
611 localVect1[0] = -localVect1[0];
612 localVect1[1] = -localVect1[1];
613 localVect1[2] = -localVect1[2];
614 };
615 if (localVect2[2]<0) {
616 localVect2[0] = -localVect2[0];
617 localVect2[1] = -localVect2[1];
618 localVect2[2] = -localVect2[2];
619 };
620 //=================================================
621 // Create the segment
fa4639a3 622 TGeoCtub *cableSeg = new TGeoCtub(0, fRadius, length/2, fPhiMin, fPhiMax,
b7943f00 623 localVect1[0],localVect1[1],localVect1[2],
624 localVect2[0],localVect2[1],localVect2[2]);
625
531d6cdc 626 TGeoMedium *airSDD = gGeoManager->GetMedium("ITS_ITSair");
b7943f00 627 TGeoVolume *vCableSeg = new TGeoVolume(GetName(), cableSeg, airSDD);
628
629 // add all cable layers
630 Double_t layThickness[100+1]; // 100 layers max !!!
631 layThickness[0] = 0;
632 for (Int_t iLay=0; iLay<fNlayer; iLay++) {
633
634 layThickness[iLay+1] = fLayThickness[iLay]+layThickness[iLay];
635 TGeoCtub *lay = new TGeoCtub(layThickness[iLay], layThickness[iLay+1],
636 length/2, fPhiMin, fPhiMax,
637 localVect1[0],localVect1[1],localVect1[2],
638 localVect2[0],localVect2[1],localVect2[2]);
639
640 TGeoVolume *vLay = new TGeoVolume("vCableSegLay", lay, fLayMedia[iLay]);
641 vLay->SetLineColor(fLayColor[iLay]);
642 vCableSeg->AddNode(vLay, iLay+1, 0);
643 };
644
645 vCableSeg->SetVisibility(kFALSE);
646 return vCableSeg;
5d7a6c6d 647}
b7943f00 648
649
fa4639a3 650//________________________________________________________________________
651TGeoVolume *AliITSv11GeomCableRound::CreateTorus( Double_t &phi,
652 Double_t &r)
653{
654 // Create one torus segment and its layers
655
656 Double_t torusR = r;
657 Double_t torusPhi1 = phi;
658 Double_t torusDPhi = -2*torusPhi1;
659
660 //=================================================
661 // Create the segment
662 TGeoTorus *cableSeg = new TGeoTorus(torusR, 0,fRadius,torusPhi1,torusDPhi);
531d6cdc 663 TGeoMedium *airSDD = gGeoManager->GetMedium("ITS_ITSair");
fa4639a3 664 TGeoVolume *vCableSeg = new TGeoVolume(GetName(), cableSeg, airSDD);
665
666 // add all cable layers
667 Double_t layThickness[100+1]; // 100 layers max !!!
668 layThickness[0] = 0;
669 for (Int_t iLay=0; iLay<fNlayer; iLay++) {
670
671 layThickness[iLay+1] = fLayThickness[iLay]+layThickness[iLay];
672 TGeoTorus *lay = new TGeoTorus(torusR, layThickness[iLay],
673 layThickness[iLay+1],
674 torusPhi1,torusDPhi);
675
676 TGeoVolume *vLay = new TGeoVolume("vCableSegLay",lay,fLayMedia[iLay]);
677 vLay->SetLineColor(fLayColor[iLay]);
678 vCableSeg->AddNode(vLay, iLay+1, 0);
679 };
680
681 vCableSeg->SetVisibility(kFALSE);
682 return vCableSeg;
5d7a6c6d 683}
fa4639a3 684
685
b7943f00 686//________________________________________________________________________
687void AliITSv11GeomCableRound::SetNLayers(Int_t nLayers) {
688 // Set the total number of layers
689 if((nLayers>0) &&(nLayers<=fgkCableMaxLayer)) {
690 fNlayer = nLayers;
691 for (Int_t i = 0; i<fNlayer; i++) {
692 fLayThickness[i] = 0;
693 fLayMedia[i] = 0;
694 };
695 };
5d7a6c6d 696}
b7943f00 697
698//________________________________________________________________________
699Int_t AliITSv11GeomCableRound::SetLayer(Int_t nLayer, Double_t thick,
700 TGeoMedium *medium, Int_t color) {
701 // Set layer #nLayer
702 if ((nLayer<0)||(nLayer>=fNlayer)) {
703 printf("Set wrong layer number of the cable\n");
704 return kFALSE;
705 };
706 if (nLayer>0)
707 if (fLayThickness[nLayer-1]<=0) {
708 printf("You must define cable layer %i first !",nLayer-1);
709 return kFALSE;
710 };
711
712 Double_t thickTot = 0;
713 for (Int_t i=0; i<nLayer; i++) thickTot += fLayThickness[i];
714 thickTot += thick;
715 if (thickTot-1e-10>fRadius) {
716 printf("Can't add this layer, cable thickness would be higher than total\n");
717 return kFALSE;
718 };
719
720 fLayThickness[nLayer] = thick;
721 fLayMedia[nLayer] = medium;
722 fLayColor[nLayer] = color;
723
724 return kTRUE;
5d7a6c6d 725}