1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // Describes a pad plane of a TRD ROC //
22 // Contains the information on pad postions, pad dimensions, //
23 // tilting angle, etc. //
24 // It also provides methods to identify the current pad number from //
25 // global coordinates. //
27 ///////////////////////////////////////////////////////////////////////////////
29 #include "AliTRDpadPlane.h"
30 #include "AliTRDgeometryFull.h"
32 ClassImp(AliTRDpadPlane)
34 //_____________________________________________________________________________
35 AliTRDpadPlane::AliTRDpadPlane():TObject()
38 // Default constructor
68 //_____________________________________________________________________________
69 AliTRDpadPlane::AliTRDpadPlane(Int_t p, Int_t c):TObject()
72 // Constructor that initializes a given pad plane type
75 fGeo = new AliTRDgeometryFull();
89 // The pad plane parameter
102 fTiltingAngle = -2.0;
113 fTiltingAngle = -2.0;
150 fTiltingAngle = -2.0;
161 fTiltingAngle = -2.0;
198 fTiltingAngle = -2.0;
209 fTiltingAngle = -2.0;
239 // The positions of the borders of the pads
243 if (fPadRow) delete [] fPadRow;
244 fPadRow = new Double_t[fNrows];
245 Double_t row = fGeo->GetChamberLength(p,0)
246 + fGeo->GetChamberLength(p,1)
247 + fGeo->GetChamberLength(p,2) / 2.
249 for (Int_t ic = 0; ic < c; ic++) {
250 row -= fGeo->GetChamberLength(p,ic);
252 for (Int_t ir = 0; ir < fNrows; ir++) {
265 if (fPadCol) delete [] fPadCol;
266 fPadCol = new Double_t[fNcols];
267 Double_t col = fGeo->GetChamberWidth(p) / 2.
270 for (Int_t ic = 0; ic < fNcols; ic++) {
283 //_____________________________________________________________________________
284 AliTRDpadPlane::AliTRDpadPlane(const AliTRDpadPlane &p):TObject(p)
287 // AliTRDpadPlane copy constructor
290 ((AliTRDpadPlane &) p).Copy(*this);
294 //_____________________________________________________________________________
295 AliTRDpadPlane::~AliTRDpadPlane()
298 // AliTRDpadPlane destructor
318 //_____________________________________________________________________________
319 AliTRDpadPlane &AliTRDpadPlane::operator=(const AliTRDpadPlane &p)
322 // Assignment operator
325 if (this != &p) ((AliTRDpadPlane &) p).Copy(*this);
330 //_____________________________________________________________________________
331 void AliTRDpadPlane::Copy(TObject &p) const
339 ((AliTRDpadPlane &) p).fGeo = 0;
341 ((AliTRDpadPlane &) p).fPla = fPla;
342 ((AliTRDpadPlane &) p).fCha = fCha;
344 ((AliTRDpadPlane &) p).fLength = fLength;
345 ((AliTRDpadPlane &) p).fWidth = fWidth;
346 ((AliTRDpadPlane &) p).fLengthRim = fLengthRim;
347 ((AliTRDpadPlane &) p).fWidthRim = fWidthRim;
348 ((AliTRDpadPlane &) p).fLengthOPad = fLengthOPad;
349 ((AliTRDpadPlane &) p).fWidthOPad = fWidthOPad;
350 ((AliTRDpadPlane &) p).fLengthIPad = fLengthIPad;
351 ((AliTRDpadPlane &) p).fWidthIPad = fWidthIPad;
353 ((AliTRDpadPlane &) p).fRowSpacing = fRowSpacing;
354 ((AliTRDpadPlane &) p).fColSpacing = fColSpacing;
356 ((AliTRDpadPlane &) p).fNrows = fNrows;
357 ((AliTRDpadPlane &) p).fNcols = fNcols;
359 ((AliTRDpadPlane &) p).fTiltingAngle = fTiltingAngle;
361 if (((AliTRDpadPlane &) p).fPadRow) delete [] ((AliTRDpadPlane &) p).fPadRow;
362 ((AliTRDpadPlane &) p).fPadRow = new Double_t[fNrows];
363 for (iBin = 0; iBin < fNrows; iBin++) {
364 ((AliTRDpadPlane &) p).fPadRow[iBin] = fPadRow[iBin];
367 if (((AliTRDpadPlane &) p).fPadCol) delete [] ((AliTRDpadPlane &) p).fPadCol;
368 ((AliTRDpadPlane &) p).fPadCol = new Double_t[fNrows];
369 for (iBin = 0; iBin < fNrows; iBin++) {
370 ((AliTRDpadPlane &) p).fPadCol[iBin] = fPadCol[iBin];
377 //_____________________________________________________________________________
378 Int_t AliTRDpadPlane::GetPadRowNumber(const Double_t z)
381 // Finds the pad row number for a given global z-position
389 if ((z > fPadRow[0]) ||
390 (z < fPadRow[0] - fLength + 2.0*fLengthRim)) {
396 while (nabove - nbelow > 1) {
397 middle = (nabove + nbelow) / 2;
398 if (z == fPadRow[middle-1]) row = middle;
399 if (z > fPadRow[middle-1]) nabove = middle;
400 else nbelow = middle;
409 //_____________________________________________________________________________
410 Int_t AliTRDpadPlane::GetPadColNumber(const Double_t rphi)
413 // Finds the pad column number for a given global rphi-position
421 if ((rphi > fPadCol[0]) ||
422 (rphi < fPadCol[0] - fWidth + 2.0*fWidthRim)) {
428 while (nabove - nbelow > 1) {
429 middle = (nabove + nbelow) / 2;
430 if (rphi == fPadCol[middle-1]) col = middle;
431 if (rphi > fPadCol[middle-1]) nabove = middle;
432 else nbelow = middle;
441 //_____________________________________________________________________________
442 Double_t AliTRDpadPlane::GetPadRowOffset(const Int_t row, const Double_t z)
445 // Calculates the distance to the pad border in row direction
448 if ((row < 0) || (row >= fNrows)) {
452 return fPadRow[row] - z;
457 //_____________________________________________________________________________
458 Double_t AliTRDpadPlane::GetPadColOffset(const Int_t col, const Double_t rphi)
461 // Calculates the distance to the pad border in column direction
464 if ((col < 0) || (col >= fNcols)) {
468 return fPadCol[col] - rphi;