[u/mrichter/AliRoot.git] / TRD / AliTRDmatrix.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/*
$Log$
Revision 1.3.4.1  2000/02/28 17:57:47  cblume
GetTrack returns now -1 if no track is found

Revision 1.3  1999/10/04 14:48:07  fca
Avoid warnings on non-ansi compiler HP-UX CC

Revision 1.2  1999/09/29 09:24:35  fca
Introduction of the Copyright and cvs Log

*/

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  Contains the pixel information for one TRD chamber                       //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "AliTRDmatrix.h"

ClassImp(AliTRDmatrix)

//_____________________________________________________________________________
AliTRDmatrix::AliTRDmatrix():TObject()
{
  //
  // Create a TRD detector matrix
  // 
 
  fRow        = 0;
  fCol        = 0;
  fTime       = 0;
  fPixel      = 0;
  fSector     = 0;
  fChamber    = 0;
  fPlane      = 0;
  fPixelArray = NULL;

}

//_____________________________________________________________________________
AliTRDmatrix::AliTRDmatrix(Int_t nRow, Int_t nCol, Int_t nTime
                         , Int_t iSec, Int_t iCha, Int_t iPla)
             :TObject()
{
  //
  // Create a TRD detector matrix with a given size
  // 

  fRow        = nRow;
  fCol        = nCol;
  fTime       = nTime;
  fPixel      = nRow * nCol * nTime;
  fSector     = iSec;
  fChamber    = iCha;
  fPlane      = iPla;
  fPixelArray = new TObjArray(fPixel);
  for (Int_t iPixel = 0; iPixel < fPixel; iPixel++) {
    AliTRDpixel *pixel = new AliTRDpixel();
    fPixelArray->Add(pixel);
  }

}

//_____________________________________________________________________________
AliTRDmatrix::~AliTRDmatrix()
{

  if (fPixelArray) {
    fPixelArray->Delete();
    delete fPixelArray;
  }

}

//_____________________________________________________________________________
void AliTRDmatrix::AddSignal(Int_t iRow, Int_t iCol, Int_t iTime, Float_t signal)
{
  //
  // Add a value to the amplitude of the signal for one specific pixel
  //

  AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
  if (pixel) {
    signal += pixel->GetSignal();
    pixel->SetSignal(signal);
  }

}

//_____________________________________________________________________________
void AliTRDmatrix::Draw(Option_t *)
{
  //
  // Draws a 3D view of the detector matrix
  //

  Char_t ctitle[50];
  sprintf(ctitle,"Matrix (Sector:%d Chamber:%d Plane:%d)"
                ,fSector,fChamber,fPlane);
  TH3F *hMatrix = new TH3F("hMatrix",ctitle,fRow ,-0.5,fRow +0.5
                                           ,fCol ,-0.5,fCol +0.5
                                           ,fTime,-0.5,fTime+0.5);

  for (Int_t iRow  = 0; iRow  < fRow;  iRow++ ) {
    for (Int_t iCol  = 0; iCol  < fCol;  iCol++ ) {
      for (Int_t iTime = 0; iTime < fTime; iTime++) {
        AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
        if (pixel) hMatrix->Fill3(iRow,iCol,iTime,pixel->GetSignal());
      }
    }
  }

  gStyle->SetOptStat(0);
  TCanvas *cMatrix = new TCanvas("cMatrix","Detector matrix 3D-view"
                                          ,50,50,600,400);
  cMatrix->ToggleEventStatus();
  hMatrix->SetXTitle("Pad-row (z)");
  hMatrix->SetYTitle("Pad-column (rphi)");
  hMatrix->SetZTitle("Timebucket");
  hMatrix->Draw("BOX");

}

//_____________________________________________________________________________
void AliTRDmatrix::DrawRow(Int_t iRow)
{
  //
  // Draws a 2D slice of the detector matrix along one row
  //

  if ((iRow < 0) || (iRow >= fRow)) {
    printf("AliTRDmatrix::DrawRow -- ");
    printf("Index out of bounds (%d/%d)\n",iRow,fRow);
    return;
  }

  Char_t ctitle[50];
  sprintf(ctitle,"Pad-row %d (Sector:%d Chamber:%d Plane:%d)"
                ,iRow,fSector,fChamber,fPlane);
  TH2F *hSliceRow = new TH2F("hSliceRow",ctitle,fCol ,-0.5,fCol +0.5
                                               ,fTime,-0.5,fTime+0.5);

  for (Int_t iCol  = 0; iCol  < fCol;  iCol++ ) {
    for (Int_t iTime = 0; iTime < fTime; iTime++) {
      AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
      if (pixel) hSliceRow->Fill(iCol,iTime,pixel->GetSignal());
    }
  }

  gStyle->SetOptStat(0);
  TCanvas *cSliceRow = new TCanvas("cSliceRow","Detector matrix 2D-slice"
                                              ,50,50,600,400);
  cSliceRow->ToggleEventStatus();
  hSliceRow->SetXTitle("Pad-column (rphi)");
  hSliceRow->SetYTitle("Timebucket");
  hSliceRow->Draw("COLZ");

}

//_____________________________________________________________________________
void AliTRDmatrix::DrawCol(Int_t iCol)
{
  //
  // Draws a 2D slice of the detector matrix along one column
  //

  if ((iCol < 0) || (iCol >= fCol)) {
    printf("AliTRDmatrix::DrawCol -- ");
    printf("Index out of bounds (%d/%d)\n",iCol,fCol);
    return;
  }

  Char_t ctitle[50];
  sprintf(ctitle,"Pad-column %d (Sector:%d Chamber:%d Plane:%d)"
                ,iCol,fSector,fChamber,fPlane);
  TH2F *hSliceCol = new TH2F("hSliceCol",ctitle,fRow ,-0.5,fRow +0.5
                                               ,fTime,-0.5,fTime+0.5);

  for (Int_t iRow  = 0; iRow  < fRow;  iRow++ ) {
    for (Int_t iTime = 0; iTime < fTime; iTime++) {
      AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
      if (pixel) hSliceCol->Fill(iRow,iTime,pixel->GetSignal());
    }
  }

  gStyle->SetOptStat(0);
  TCanvas *cSliceCol = new TCanvas("cSliceCol","Detector matrix 2D-slice"
                                              ,50,50,600,400);
  cSliceCol->ToggleEventStatus();
  hSliceCol->SetXTitle("Pad-row (z)");
  hSliceCol->SetYTitle("Timebucket");
  hSliceCol->Draw("COLZ");

}

//_____________________________________________________________________________
void AliTRDmatrix::DrawTime(Int_t iTime)
{
  //
  // Draws a 2D slice of the detector matrix along one time slice
  //

  if ((iTime < 0) || (iTime >= fTime)) {
    printf("AliTRDmatrix::DrawTime -- ");
    printf("Index out of bounds (%d/%d)\n",iTime,fTime);
    return;
  }

  Char_t ctitle[50];
  sprintf(ctitle,"Time-slice %d (Sector:%d Chamber:%d Plane:%d)"
                ,iTime,fSector,fChamber,fPlane);
  TH2F *hSliceTime = new TH2F("hSliceTime",ctitle,fRow,-0.5,fRow+0.5
                                                 ,fCol,-0.5,fCol+0.5);

  for (Int_t iRow = 0; iRow < fRow; iRow++) {
    for (Int_t iCol = 0; iCol < fCol; iCol++) {
      AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
      if (pixel) hSliceTime->Fill(iRow,iCol,pixel->GetSignal());
    }
  }

  gStyle->SetOptStat(0);
  TCanvas *cSliceTime = new TCanvas("cSliceTime","Detector matrix 2D-slice"
                                                ,50,50,600,400);
  cSliceTime->ToggleEventStatus();
  hSliceTime->SetXTitle("Pad-row (z)");
  hSliceTime->SetYTitle("Pad-column (rphi)");
  hSliceTime->Draw("COLZ");

}

//_____________________________________________________________________________
void AliTRDmatrix::SetSignal(Int_t iRow, Int_t iCol, Int_t iTime, Float_t signal)
{
  //
  // Set the amplitude of the signal for one specific pixel
  //

  AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
  if (pixel) {
    pixel->SetSignal(signal);
  }

}

//_____________________________________________________________________________
Bool_t AliTRDmatrix::AddTrack(Int_t iRow, Int_t iCol, Int_t iTime, Int_t track)
{
  // 
  // Add this track number to the stored tracks passing through this pixel. 
  // If there are already three stored the return status is FALSE.  
  //

  AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
  if (!(pixel)) return kTRUE;

  Bool_t trackSet = kFALSE;
  for (Int_t i = 0; i < kTrackPixel; i++) {
    if (pixel->GetTrack(i) == track) {
      trackSet = kTRUE;
      break;
    }
    if (pixel->GetTrack(i) ==    -1) {
      pixel->SetTrack(i,track);
      trackSet = kTRUE;
      break;
    }
  }    

  return trackSet;

}

//_____________________________________________________________________________
void AliTRDmatrix::SetTrack(Int_t iRow, Int_t iCol, Int_t iTime
                          , Int_t iTrack, Int_t track)
{
  //
  // Store the number of a track which is passing through this pixel
  //

  AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
  if (pixel) {
    pixel->SetTrack(iTrack,track);
  }

}

//_____________________________________________________________________________
Float_t AliTRDmatrix::GetSignal(Int_t iRow, Int_t iCol, Int_t iTime)
{
  //
  // Returns the amplitude of the signal for one specific pixel
  //

  AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
  if (pixel) {
    return (pixel->GetSignal());
  }
  else {
    return 0;
  }

}

//_____________________________________________________________________________
Int_t AliTRDmatrix::GetTrack(Int_t iRow, Int_t iCol, Int_t iTime, Int_t iTrack)
{
  //
  // Returns the numbers of the tracks passing through one specific pixel
  //

  if ((iTrack < 0) || (iTrack >= kTrackPixel)) {
    printf("AliTRDmatrix::GetTrack -- ");
    printf("Index out of bounds (%d)\n",iTrack);
    return -1;
  }

  AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
  if (pixel) {
    return (pixel->GetTrack(iTrack));
  }
  else {
    return -1;
  }

}

//_____________________________________________________________________________
Int_t AliTRDmatrix::GetIndex(Int_t iRow, Int_t iCol, Int_t iTime)
{

  if ((iRow  >= 0) && (iRow  < fRow ) &&
      (iCol  >= 0) && (iCol  < fCol ) &&
      (iTime >= 0) && (iTime < fTime)) {
    return (iTime + iCol * fTime + iRow * fTime * fCol);
  }
  else {
    return -1;
  }

}

//_____________________________________________________________________________
AliTRDpixel *AliTRDmatrix::GetPixel(Int_t iRow, Int_t iCol, Int_t iTime)
{

  Int_t iPixel = GetIndex(iRow,iCol,iTime);
  if (iPixel < 0) {
    return NULL;
  }
  else {
    return ((AliTRDpixel *) fPixelArray->At(iPixel));
  }

}
Commit	Line	Data
4c039060	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	$Log$
851d3db9	18	Revision 1.3.4.1 2000/02/28 17:57:47 cblume
	19	GetTrack returns now -1 if no track is found
	20
	21	Revision 1.3 1999/10/04 14:48:07 fca
	22	Avoid warnings on non-ansi compiler HP-UX CC
	23
7d83513f	24	Revision 1.2 1999/09/29 09:24:35 fca
	25	Introduction of the Copyright and cvs Log
	26
4c039060	27	*/
4c039060	28
99d5402e	29	///////////////////////////////////////////////////////////////////////////////
	30	// //
	31	// Contains the pixel information for one TRD chamber //
	32	// //
	33	///////////////////////////////////////////////////////////////////////////////
	34
	35	#include "AliTRDmatrix.h"
	36
	37	ClassImp(AliTRDmatrix)
	38
	39	//_____________________________________________________________________________
	40	AliTRDmatrix::AliTRDmatrix():TObject()
	41	{
	42	//
	43	// Create a TRD detector matrix
	44	//
	45
	46	fRow = 0;
	47	fCol = 0;
	48	fTime = 0;
	49	fPixel = 0;
	50	fSector = 0;
	51	fChamber = 0;
	52	fPlane = 0;
	53	fPixelArray = NULL;
	54
	55	}
	56
	57	//_____________________________________________________________________________
	58	AliTRDmatrix::AliTRDmatrix(Int_t nRow, Int_t nCol, Int_t nTime
	59	, Int_t iSec, Int_t iCha, Int_t iPla)
	60	:TObject()
	61	{
	62	//
	63	// Create a TRD detector matrix with a given size
	64	//
	65
	66	fRow = nRow;
	67	fCol = nCol;
	68	fTime = nTime;
	69	fPixel = nRow * nCol * nTime;
	70	fSector = iSec;
	71	fChamber = iCha;
	72	fPlane = iPla;
	73	fPixelArray = new TObjArray(fPixel);
	74	for (Int_t iPixel = 0; iPixel < fPixel; iPixel++) {
	75	AliTRDpixel *pixel = new AliTRDpixel();
	76	fPixelArray->Add(pixel);
	77	}
	78
	79	}
	80
	81	//_____________________________________________________________________________
	82	AliTRDmatrix::~AliTRDmatrix()
	83	{
	84
	85	if (fPixelArray) {
	86	fPixelArray->Delete();
	87	delete fPixelArray;
	88	}
	89
	90	}
	91
	92	//_____________________________________________________________________________
93	void AliTRDmatrix::AddSignal(Int_t iRow, Int_t iCol, Int_t iTime, Float_t signal)
94	{
95	//
96	// Add a value to the amplitude of the signal for one specific pixel
97	//
98
99	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
100	if (pixel) {
101	signal += pixel->GetSignal();
102	pixel->SetSignal(signal);
103	}
104
105	}
106
107	//_____________________________________________________________________________
7d83513f	108	void AliTRDmatrix::Draw(Option_t *)
99d5402e	109	{
	110	//
	111	// Draws a 3D view of the detector matrix
	112	//
	113
	114	Char_t ctitle[50];
	115	sprintf(ctitle,"Matrix (Sector:%d Chamber:%d Plane:%d)"
	116	,fSector,fChamber,fPlane);
	117	TH3F *hMatrix = new TH3F("hMatrix",ctitle,fRow ,-0.5,fRow +0.5
	118	,fCol ,-0.5,fCol +0.5
	119	,fTime,-0.5,fTime+0.5);
	120
	121	for (Int_t iRow = 0; iRow < fRow; iRow++ ) {
	122	for (Int_t iCol = 0; iCol < fCol; iCol++ ) {
	123	for (Int_t iTime = 0; iTime < fTime; iTime++) {
	124	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	125	if (pixel) hMatrix->Fill3(iRow,iCol,iTime,pixel->GetSignal());
	126	}
	127	}
	128	}
	129
	130	gStyle->SetOptStat(0);
	131	TCanvas *cMatrix = new TCanvas("cMatrix","Detector matrix 3D-view"
	132	,50,50,600,400);
	133	cMatrix->ToggleEventStatus();
	134	hMatrix->SetXTitle("Pad-row (z)");
	135	hMatrix->SetYTitle("Pad-column (rphi)");
	136	hMatrix->SetZTitle("Timebucket");
	137	hMatrix->Draw("BOX");
	138
	139	}
	140
	141	//_____________________________________________________________________________
	142	void AliTRDmatrix::DrawRow(Int_t iRow)
	143	{
	144	//
	145	// Draws a 2D slice of the detector matrix along one row
	146	//
	147
	148	if ((iRow < 0) \|\| (iRow >= fRow)) {
851d3db9	149	printf("AliTRDmatrix::DrawRow -- ");
99d5402e	150	printf("Index out of bounds (%d/%d)\n",iRow,fRow);
	151	return;
	152	}
	153
	154	Char_t ctitle[50];
	155	sprintf(ctitle,"Pad-row %d (Sector:%d Chamber:%d Plane:%d)"
	156	,iRow,fSector,fChamber,fPlane);
	157	TH2F *hSliceRow = new TH2F("hSliceRow",ctitle,fCol ,-0.5,fCol +0.5
	158	,fTime,-0.5,fTime+0.5);
	159
	160	for (Int_t iCol = 0; iCol < fCol; iCol++ ) {
	161	for (Int_t iTime = 0; iTime < fTime; iTime++) {
	162	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	163	if (pixel) hSliceRow->Fill(iCol,iTime,pixel->GetSignal());
	164	}
	165	}
	166
	167	gStyle->SetOptStat(0);
	168	TCanvas *cSliceRow = new TCanvas("cSliceRow","Detector matrix 2D-slice"
	169	,50,50,600,400);
	170	cSliceRow->ToggleEventStatus();
	171	hSliceRow->SetXTitle("Pad-column (rphi)");
	172	hSliceRow->SetYTitle("Timebucket");
	173	hSliceRow->Draw("COLZ");
	174
	175	}
	176
	177	//_____________________________________________________________________________
	178	void AliTRDmatrix::DrawCol(Int_t iCol)
	179	{
	180	//
	181	// Draws a 2D slice of the detector matrix along one column
	182	//
	183
	184	if ((iCol < 0) \|\| (iCol >= fCol)) {
851d3db9	185	printf("AliTRDmatrix::DrawCol -- ");
99d5402e	186	printf("Index out of bounds (%d/%d)\n",iCol,fCol);
	187	return;
	188	}
	189
	190	Char_t ctitle[50];
	191	sprintf(ctitle,"Pad-column %d (Sector:%d Chamber:%d Plane:%d)"
	192	,iCol,fSector,fChamber,fPlane);
	193	TH2F *hSliceCol = new TH2F("hSliceCol",ctitle,fRow ,-0.5,fRow +0.5
	194	,fTime,-0.5,fTime+0.5);
	195
	196	for (Int_t iRow = 0; iRow < fRow; iRow++ ) {
	197	for (Int_t iTime = 0; iTime < fTime; iTime++) {
	198	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	199	if (pixel) hSliceCol->Fill(iRow,iTime,pixel->GetSignal());
	200	}
	201	}
	202
	203	gStyle->SetOptStat(0);
	204	TCanvas *cSliceCol = new TCanvas("cSliceCol","Detector matrix 2D-slice"
	205	,50,50,600,400);
	206	cSliceCol->ToggleEventStatus();
	207	hSliceCol->SetXTitle("Pad-row (z)");
	208	hSliceCol->SetYTitle("Timebucket");
	209	hSliceCol->Draw("COLZ");
	210
	211	}
	212
	213	//_____________________________________________________________________________
	214	void AliTRDmatrix::DrawTime(Int_t iTime)
	215	{
	216	//
	217	// Draws a 2D slice of the detector matrix along one time slice
	218	//
	219
	220	if ((iTime < 0) \|\| (iTime >= fTime)) {
851d3db9	221	printf("AliTRDmatrix::DrawTime -- ");
99d5402e	222	printf("Index out of bounds (%d/%d)\n",iTime,fTime);
	223	return;
	224	}
	225
	226	Char_t ctitle[50];
	227	sprintf(ctitle,"Time-slice %d (Sector:%d Chamber:%d Plane:%d)"
	228	,iTime,fSector,fChamber,fPlane);
	229	TH2F *hSliceTime = new TH2F("hSliceTime",ctitle,fRow,-0.5,fRow+0.5
	230	,fCol,-0.5,fCol+0.5);
	231
	232	for (Int_t iRow = 0; iRow < fRow; iRow++) {
	233	for (Int_t iCol = 0; iCol < fCol; iCol++) {
	234	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	235	if (pixel) hSliceTime->Fill(iRow,iCol,pixel->GetSignal());
	236	}
	237	}
	238
	239	gStyle->SetOptStat(0);
	240	TCanvas *cSliceTime = new TCanvas("cSliceTime","Detector matrix 2D-slice"
	241	,50,50,600,400);
	242	cSliceTime->ToggleEventStatus();
	243	hSliceTime->SetXTitle("Pad-row (z)");
	244	hSliceTime->SetYTitle("Pad-column (rphi)");
	245	hSliceTime->Draw("COLZ");
	246
	247	}
	248
	249	//_____________________________________________________________________________
	250	void AliTRDmatrix::SetSignal(Int_t iRow, Int_t iCol, Int_t iTime, Float_t signal)
	251	{
	252	//
	253	// Set the amplitude of the signal for one specific pixel
	254	//
	255
	256	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	257	if (pixel) {
	258	pixel->SetSignal(signal);
	259	}
	260
	261	}
	262
	263	//_____________________________________________________________________________
	264	Bool_t AliTRDmatrix::AddTrack(Int_t iRow, Int_t iCol, Int_t iTime, Int_t track)
	265	{
	266	//
	267	// Add this track number to the stored tracks passing through this pixel.
	268	// If there are already three stored the return status is FALSE.
	269	//
	270
	271	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	272	if (!(pixel)) return kTRUE;
	273
	274	Bool_t trackSet = kFALSE;
	275	for (Int_t i = 0; i < kTrackPixel; i++) {
	276	if (pixel->GetTrack(i) == track) {
	277	trackSet = kTRUE;
	278	break;
	279	}
851d3db9	280	if (pixel->GetTrack(i) == -1) {
99d5402e	281	pixel->SetTrack(i,track);
	282	trackSet = kTRUE;
	283	break;
	284	}
	285	}
	286
	287	return trackSet;
	288
	289	}
	290
	291	//_____________________________________________________________________________
	292	void AliTRDmatrix::SetTrack(Int_t iRow, Int_t iCol, Int_t iTime
	293	, Int_t iTrack, Int_t track)
	294	{
	295	//
	296	// Store the number of a track which is passing through this pixel
	297	//
	298
	299	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	300	if (pixel) {
	301	pixel->SetTrack(iTrack,track);
	302	}
	303
	304	}
	305
	306	//_____________________________________________________________________________
	307	Float_t AliTRDmatrix::GetSignal(Int_t iRow, Int_t iCol, Int_t iTime)
	308	{
	309	//
	310	// Returns the amplitude of the signal for one specific pixel
	311	//
	312
	313	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	314	if (pixel) {
	315	return (pixel->GetSignal());
	316	}
	317	else {
	318	return 0;
	319	}
	320
	321	}
	322
	323	//_____________________________________________________________________________
	324	Int_t AliTRDmatrix::GetTrack(Int_t iRow, Int_t iCol, Int_t iTime, Int_t iTrack)
	325	{
	326	//
	327	// Returns the numbers of the tracks passing through one specific pixel
	328	//
	329
	330	if ((iTrack < 0) \|\| (iTrack >= kTrackPixel)) {
851d3db9	331	printf("AliTRDmatrix::GetTrack -- ");
	332	printf("Index out of bounds (%d)\n",iTrack);
	333	return -1;
99d5402e	334	}
	335
	336	AliTRDpixel *pixel = GetPixel(iRow,iCol,iTime);
	337	if (pixel) {
	338	return (pixel->GetTrack(iTrack));
	339	}
	340	else {
851d3db9	341	return -1;
99d5402e	342	}
	343
	344	}
	345
	346	//_____________________________________________________________________________
	347	Int_t AliTRDmatrix::GetIndex(Int_t iRow, Int_t iCol, Int_t iTime)
	348	{
	349
	350	if ((iRow >= 0) && (iRow < fRow ) &&
	351	(iCol >= 0) && (iCol < fCol ) &&
	352	(iTime >= 0) && (iTime < fTime)) {
	353	return (iTime + iCol * fTime + iRow * fTime * fCol);
	354	}
	355	else {
	356	return -1;
	357	}
	358
	359	}
	360
	361	//_____________________________________________________________________________
	362	AliTRDpixel *AliTRDmatrix::GetPixel(Int_t iRow, Int_t iCol, Int_t iTime)
	363	{
	364
	365	Int_t iPixel = GetIndex(iRow,iCol,iTime);
	366	if (iPixel < 0) {
	367	return NULL;
	368	}
	369	else {
	370	return ((AliTRDpixel *) fPixelArray->At(iPixel));
	371	}
	372
	373	}