[u/mrichter/AliRoot.git] / TPC / AliTPCTransform.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.                  *
 **************************************************************************/

//-------------------------------------------------------
//          Implementation of the TPC transformation class
//
//   Origin: Marian Ivanov   Marian.Ivanov@cern.ch
//           Magnus Mager
//
//   Class for tranformation of the coordinate frame
//   Transformation  
//    local coordinate frame (sector, padrow, pad, timebine) ==>
//    rotated global (tracking) cooridnate frame (sector, lx,ly,lz)
//
//    Unisochronity  - (substract time0 - pad by pad)
//    Drift velocity - Currently common drift velocity - functionality of AliTPCParam
//    ExB effect     - 
//
//    Time of flight correction -
//                   - Depends on the vertex position
//                   - by default 
//                           
//    Usage:
//          AliTPCclustererMI::AddCluster
//          AliTPCtrackerMI::Transform
//    
//-------------------------------------------------------

/* To test it:
   cdb=AliCDBManager::Instance()
   cdb->SetDefaultStorage("local:///u/mmager/mycalib1")
   c=AliTPCcalibDB::Instance()
   c->SetRun(0)
   Double_t x[]={1.0,2.0,3.0}
   Int_t i[]={4}
   AliTPCTransform trafo
   trafo.Transform(x,i,0,1)
 */

/* $Id$ */

#include "AliTPCROC.h"
#include "AliTPCCalPad.h"
#include "AliTPCCalROC.h"
#include "AliTPCcalibDB.h"
#include "AliTPCParam.h"
#include "TMath.h"
#include "AliLog.h"
#include "AliTPCExB.h"
#include "TGeoMatrix.h"
#include "AliTPCRecoParam.h"
#include "AliTPCCalibVdrift.h"
#include "AliTPCTransform.h"
#include <AliCTPTimeParams.h>

ClassImp(AliTPCTransform)


AliTPCTransform::AliTPCTransform():
  AliTransform(),
  fCurrentRecoParam(0),       //! current reconstruction parameters
  fCurrentRun(0),             //! current run
  fCurrentTimeStamp(0)        //! current time stamp   
{
  //
  // Speed it up a bit!
  //
  for (Int_t i=0;i<18;++i) {
    Double_t alpha=TMath::DegToRad()*(10.+20.*(i%18));
    fSins[i]=TMath::Sin(alpha);
    fCoss[i]=TMath::Cos(alpha);
  }
  fPrimVtx[0]=0;
  fPrimVtx[1]=0;
  fPrimVtx[2]=0;
}
AliTPCTransform::AliTPCTransform(const AliTPCTransform& transform):
  AliTransform(transform),
  fCurrentRecoParam(transform.fCurrentRecoParam),       //! current reconstruction parameters
  fCurrentRun(transform.fCurrentRun),             //! current run
  fCurrentTimeStamp(transform.fCurrentTimeStamp)        //! current time stamp   
{
  //
  // Speed it up a bit!
  //
  for (Int_t i=0;i<18;++i) {
    Double_t alpha=TMath::DegToRad()*(10.+20.*(i%18));
    fSins[i]=TMath::Sin(alpha);
    fCoss[i]=TMath::Cos(alpha);
  }
  fPrimVtx[0]=0;
  fPrimVtx[1]=0;
  fPrimVtx[2]=0;
}

AliTPCTransform::~AliTPCTransform() {
  //
  // Destructor
  //
}

void AliTPCTransform::SetPrimVertex(Double_t *vtx){
  //
  //
  //
  fPrimVtx[0]=vtx[0];
  fPrimVtx[1]=vtx[1];
  fPrimVtx[2]=vtx[2];
}


void AliTPCTransform::Transform(Double_t *x,Int_t *i,UInt_t /*time*/,
				Int_t /*coordinateType*/) {
  // input: x[0] - pad row
  //        x[1] - pad 
  //        x[2] - time in us
  //        i[0] - sector
  // output: x[0] - x (all in the rotated global coordinate frame)
  //         x[1] - y
  //         x[2] - z
  //
  //  primvtx     - position of the primary vertex
  //                used for the TOF correction
  //                TOF of particle calculated assuming the speed-of-light and 
  //                line approximation  
  //
  
  Int_t row=TMath::Nint(x[0]);
  Int_t pad=TMath::Nint(x[1]);
  Int_t sector=i[0];
  AliTPCcalibDB*  calib=AliTPCcalibDB::Instance();  
  //
  AliTPCCalPad * time0TPC = calib->GetPadTime0(); 
  AliTPCCalPad * distortionMapY = calib->GetDistortionMap(0); 
  AliTPCCalPad * distortionMapZ = calib->GetDistortionMap(1); 
  AliTPCParam  * param    = calib->GetParameters(); 
  if (!time0TPC){
    AliFatal("Time unisochronity missing");
  }

  if (!param){
    AliFatal("Parameters missing");
  }

  Double_t xx[3];
  //  Apply Time0 correction - Pad by pad fluctuation
  //
  x[2]-=time0TPC->GetCalROC(sector)->GetValue(row,pad);
  //
  // Tranform from pad - time coordinate system to the rotated global (tracking) system
  //
  Local2RotatedGlobal(sector,x);
  //
  //
  //
  // Alignment
  //TODO:  calib->GetParameters()->GetClusterMatrix(sector)->LocalToMaster(x,xx);
  RotatedGlobal2Global(sector,x);
  //
  //
  // ExB correction
  //
  if(fCurrentRecoParam&&fCurrentRecoParam->GetUseExBCorrection()) {

    calib->GetExB()->Correct(x,xx);

  } else {

    xx[0] = x[0];
    xx[1] = x[1];
    xx[2] = x[2];
  }

  //
  // Time of flight correction
  // 
  if (fCurrentRecoParam&&fCurrentRecoParam->GetUseTOFCorrection()){
    const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector(); 
    Float_t sign=1;
    if (sector < kNIS) {
      sign = (sector < kNIS/2) ? 1 : -1;
    } else {
      sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
    }
    Float_t deltaDr =0;
    Float_t dist=0;
    dist+=(fPrimVtx[0]-x[0])*(fPrimVtx[0]-x[0]);
    dist+=(fPrimVtx[1]-x[1])*(fPrimVtx[1]-x[1]);
    dist+=(fPrimVtx[2]-x[2])*(fPrimVtx[2]-x[2]);
    dist = TMath::Sqrt(dist);
    // drift length correction because of TOF
    // the drift velocity is in cm/s therefore multiplication by 0.01
    deltaDr = (dist*(0.01*param->GetDriftV()))/TMath::C(); 
    xx[2]+=sign*deltaDr;
  }
  //
  //
  //

  //
  Global2RotatedGlobal(sector,xx);

  //
  // Apply non linear distortion correction  
  //
  if (distortionMapY ){
    //can be switch on for each dimension separatelly
    if (fCurrentRecoParam->GetUseFieldCorrection()&0x2) 
      xx[1]-=distortionMapY->GetCalROC(sector)->GetValue(row,pad);
    if (fCurrentRecoParam->GetUseFieldCorrection()&0x4) 
      xx[2]-=distortionMapZ->GetCalROC(sector)->GetValue(row,pad);
  }


  //
  x[0]=xx[0];x[1]=xx[1];x[2]=xx[2];
}

void AliTPCTransform::Local2RotatedGlobal(Int_t sector, Double_t *x) const {
  //
  //  
  // Tranform coordinate from  
  // row, pad, time to x,y,z
  //
  // Drift Velocity 
  // Current implementation - common drift velocity - for full chamber
  // TODO: use a map or parametrisation!
  //
  //  
  //
  const  Int_t kMax =60;  // cache for 60 seconds
  static Int_t lastStamp=-1;  //cached values
  static Double_t lastCorr = 1;
  //
  AliTPCcalibDB*  calib=AliTPCcalibDB::Instance();
  AliTPCParam  * param    = calib->GetParameters(); 
  AliTPCCalibVdrift *driftCalib = AliTPCcalibDB::Instance()->GetVdrift(fCurrentRun);
  Double_t driftCorr = 1.;
  if (driftCalib){
    //
    // caching drift correction - temp. fix
    // Extremally slow procedure
    if ( TMath::Abs((lastStamp)-Int_t(fCurrentTimeStamp))<kMax){
      driftCorr = lastCorr;
    }else{
      driftCorr = 1.+(driftCalib->GetPTRelative(fCurrentTimeStamp,0)+ driftCalib->GetPTRelative(fCurrentTimeStamp,1))*0.5;
      lastCorr=driftCorr;
      lastStamp=fCurrentTimeStamp;
      
    }
  }
  //
  // simple caching non thread save
  static Double_t vdcorrectionTime=1;
  static Double_t time0corrTime=0;
  static Int_t    lastStampT=-1;
  //
  if (lastStampT!=(Int_t)fCurrentTimeStamp){
    lastStampT=fCurrentTimeStamp;
    if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionTime()>0) {
      vdcorrectionTime = (1+AliTPCcalibDB::Instance()->
			  GetVDriftCorrectionTime(fCurrentTimeStamp, 
						  fCurrentRun,
						  sector%36>=18,
						  fCurrentRecoParam->GetUseDriftCorrectionTime()));			  
      time0corrTime= AliTPCcalibDB::Instance()->
	GetTime0CorrectionTime(fCurrentTimeStamp, 
			       fCurrentRun,
			       sector%36>=18,
			       fCurrentRecoParam->GetUseDriftCorrectionTime());	
    }
    //
    if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionGY()>0) {
      Float_t xyzPad[3];
      AliTPCROC::Instance()->GetPositionGlobal(sector, TMath::Nint(x[0]) ,TMath::Nint(x[1]), xyzPad);
      
      Double_t corrGy= (1+(xyzPad[1])*AliTPCcalibDB::Instance()->
			GetVDriftCorrectionGy(fCurrentTimeStamp, 
					      AliTPCcalibDB::Instance()->GetRun(),
					      sector%36>=18,
					      fCurrentRecoParam->GetUseDriftCorrectionGY()));
      vdcorrectionTime *=corrGy;
    }
  }


  if (!param){
    AliFatal("Parameters missing");
  }
  Int_t row=TMath::Nint(x[0]);
  //  Int_t pad=TMath::Nint(x[1]);
  //
  const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
  Double_t sign = 1.;
  Double_t zwidth    = param->GetZWidth()*driftCorr*vdcorrectionTime;
  Double_t padWidth  = 0;
  Double_t padLength = 0;
  Double_t    maxPad    = 0;
  //
  if (sector < kNIS) {
    maxPad = param->GetNPadsLow(row);
    sign = (sector < kNIS/2) ? 1 : -1;
    padLength = param->GetPadPitchLength(sector,row);
    padWidth = param->GetPadPitchWidth(sector);
  } else {
    maxPad = param->GetNPadsUp(row);
    sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
    padLength = param->GetPadPitchLength(sector,row);
    padWidth  = param->GetPadPitchWidth(sector);
  }
  //
  // X coordinate
  x[0] = param->GetPadRowRadii(sector,row);  // padrow X position - ideal
  //
  // Y coordinate
  //
  x[1]=(x[1]-0.5*maxPad)*padWidth;
  // pads are mirrorred on C-side
  if (sector%36>17){
    x[1]*=-1;
  }
  
  //
  
  //
  // Z coordinate
  //
  if (AliTPCcalibDB::Instance()->IsTrgL0()){
    // by defualt we assume L1 trigger is used - make a correction in case of  L0
    AliCTPTimeParams* ctp = AliTPCcalibDB::Instance()->GetCTPTimeParams();
    Double_t delay = ctp->GetDelayL1L0()*0.000000025;
    x[2]-=delay/param->GetTSample();
  }
  x[2]-= param->GetNTBinsL1();
  x[2]*= zwidth;  // tranform time bin to the distance to the ROC
  x[2]-= 3.*param->GetZSigma() + time0corrTime;
  // subtract the time offsets
  x[2] = sign*( param->GetZLength(sector) - x[2]);
}

void AliTPCTransform::RotatedGlobal2Global(Int_t sector,Double_t *x) const {
  //
  // transform possition rotated global to the global
  //
  Double_t cos,sin;
  GetCosAndSin(sector,cos,sin);
  Double_t tmp=x[0];
  x[0]= cos*tmp-sin*x[1];
  x[1]=+sin*tmp+cos*x[1];
}

void AliTPCTransform::Global2RotatedGlobal(Int_t sector,Double_t *x) const {
  //
  // tranform possition Global2RotatedGlobal
  //
  Double_t cos,sin;
  GetCosAndSin(sector,cos,sin);
  Double_t tmp=x[0];
  x[0]= cos*tmp+sin*x[1];
  x[1]= -sin*tmp+cos*x[1];
}

void AliTPCTransform::GetCosAndSin(Int_t sector,Double_t &cos,
					  Double_t &sin) const {
  cos=fCoss[sector%18];
  sin=fSins[sector%18];
}


void AliTPCTransform::ApplyTransformations(Double_t */*xyz*/, Int_t /*volID*/){
  //
  // Modify global position
  // xyz    - global xyz position
  // volID  - volID of detector (sector number)
  //
  //
  
}
Commit	Line	Data
022ee144	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	// Implementation of the TPC transformation class
	18	//
	19	// Origin: Marian Ivanov Marian.Ivanov@cern.ch
	20	// Magnus Mager
	21	//
	22	// Class for tranformation of the coordinate frame
66954e3f	23	// Transformation
022ee144	24	// local coordinate frame (sector, padrow, pad, timebine) ==>
	25	// rotated global (tracking) cooridnate frame (sector, lx,ly,lz)
	26	//
	27	// Unisochronity - (substract time0 - pad by pad)
	28	// Drift velocity - Currently common drift velocity - functionality of AliTPCParam
	29	// ExB effect -
	30	//
003b43ed	31	// Time of flight correction -
	32	// - Depends on the vertex position
	33	// - by default
	34	//
022ee144	35	// Usage:
	36	// AliTPCclustererMI::AddCluster
	37	// AliTPCtrackerMI::Transform
	38	//
	39	//-------------------------------------------------------
c1bdda91	40
	41	/* To test it:
	42	cdb=AliCDBManager::Instance()
	43	cdb->SetDefaultStorage("local:///u/mmager/mycalib1")
	44	c=AliTPCcalibDB::Instance()
	45	c->SetRun(0)
	46	Double_t x[]={1.0,2.0,3.0}
	47	Int_t i[]={4}
	48	AliTPCTransform trafo
	49	trafo.Transform(x,i,0,1)
	50	*/
	51
022ee144	52	/* $Id$ */
	53
	54	#include "AliTPCROC.h"
	55	#include "AliTPCCalPad.h"
	56	#include "AliTPCCalROC.h"
	57	#include "AliTPCcalibDB.h"
	58	#include "AliTPCParam.h"
	59	#include "TMath.h"
	60	#include "AliLog.h"
	61	#include "AliTPCExB.h"
66954e3f	62	#include "TGeoMatrix.h"
9430b11a	63	#include "AliTPCRecoParam.h"
9430b11a	64	#include "AliTPCCalibVdrift.h"
022ee144	65	#include "AliTPCTransform.h"
1e6337b1	66	#include <AliCTPTimeParams.h>
022ee144	67
66954e3f	68	ClassImp(AliTPCTransform)
022ee144	69
022ee144	70
9430b11a	71	AliTPCTransform::AliTPCTransform():
	72	AliTransform(),
	73	fCurrentRecoParam(0), //! current reconstruction parameters
	74	fCurrentRun(0), //! current run
	75	fCurrentTimeStamp(0) //! current time stamp
	76	{
	77	//
	78	// Speed it up a bit!
	79	//
	80	for (Int_t i=0;i<18;++i) {
	81	Double_t alpha=TMath::DegToRad()(10.+20.(i%18));
	82	fSins[i]=TMath::Sin(alpha);
	83	fCoss[i]=TMath::Cos(alpha);
	84	}
	85	fPrimVtx[0]=0;
	86	fPrimVtx[1]=0;
	87	fPrimVtx[2]=0;
	88	}
	89	AliTPCTransform::AliTPCTransform(const AliTPCTransform& transform):
	90	AliTransform(transform),
	91	fCurrentRecoParam(transform.fCurrentRecoParam), //! current reconstruction parameters
	92	fCurrentRun(transform.fCurrentRun), //! current run
	93	fCurrentTimeStamp(transform.fCurrentTimeStamp) //! current time stamp
003b43ed	94	{
24db6af7	95	//
c1bdda91	96	// Speed it up a bit!
24db6af7	97	//
c1bdda91	98	for (Int_t i=0;i<18;++i) {
	99	Double_t alpha=TMath::DegToRad()(10.+20.(i%18));
	100	fSins[i]=TMath::Sin(alpha);
	101	fCoss[i]=TMath::Cos(alpha);
	102	}
003b43ed	103	fPrimVtx[0]=0;
	104	fPrimVtx[1]=0;
	105	fPrimVtx[2]=0;
c1bdda91	106	}
	107
	108	AliTPCTransform::~AliTPCTransform() {
24db6af7	109	//
	110	// Destructor
	111	//
c1bdda91	112	}
c1bdda91	113
003b43ed	114	void AliTPCTransform::SetPrimVertex(Double_t *vtx){
	115	//
	116	//
	117	//
	118	fPrimVtx[0]=vtx[0];
	119	fPrimVtx[1]=vtx[1];
	120	fPrimVtx[2]=vtx[2];
	121	}
	122
	123
24db6af7	124	void AliTPCTransform::Transform(Double_t x,Int_t i,UInt_t /time/,
003b43ed	125	Int_t /coordinateType/) {
24db6af7	126	// input: x[0] - pad row
24db6af7	127	// x[1] - pad
c1bdda91	128	// x[2] - time in us
	129	// i[0] - sector
	130	// output: x[0] - x (all in the rotated global coordinate frame)
	131	// x[1] - y
	132	// x[2] - z
ecc5dd8f	133	//
	134	// primvtx - position of the primary vertex
	135	// used for the TOF correction
	136	// TOF of particle calculated assuming the speed-of-light and
	137	// line approximation
	138	//
	139
24db6af7	140	Int_t row=TMath::Nint(x[0]);
24db6af7	141	Int_t pad=TMath::Nint(x[1]);
c1bdda91	142	Int_t sector=i[0];
9430b11a	143	AliTPCcalibDB* calib=AliTPCcalibDB::Instance();
24db6af7	144	//
24db6af7	145	AliTPCCalPad * time0TPC = calib->GetPadTime0();
2293155b	146	AliTPCCalPad * distortionMapY = calib->GetDistortionMap(0);
2293155b	147	AliTPCCalPad * distortionMapZ = calib->GetDistortionMap(1);
24db6af7	148	AliTPCParam * param = calib->GetParameters();
	149	if (!time0TPC){
	150	AliFatal("Time unisochronity missing");
	151	}
c1bdda91	152
24db6af7	153	if (!param){
	154	AliFatal("Parameters missing");
	155	}
c1bdda91	156
24db6af7	157	Double_t xx[3];
	158	// Apply Time0 correction - Pad by pad fluctuation
	159	//
	160	x[2]-=time0TPC->GetCalROC(sector)->GetValue(row,pad);
	161	//
	162	// Tranform from pad - time coordinate system to the rotated global (tracking) system
	163	//
	164	Local2RotatedGlobal(sector,x);
	165	//
	166	//
	167	//
c1bdda91	168	// Alignment
c1bdda91	169	//TODO: calib->GetParameters()->GetClusterMatrix(sector)->LocalToMaster(x,xx);
c1bdda91	170	RotatedGlobal2Global(sector,x);
24db6af7	171	//
	172	//
	173	// ExB correction
	174	//
3ce45991	175	if(fCurrentRecoParam&&fCurrentRecoParam->GetUseExBCorrection()) {
	176
	177	calib->GetExB()->Correct(x,xx);
	178
	179	} else {
	180
	181	xx[0] = x[0];
	182	xx[1] = x[1];
	183	xx[2] = x[2];
	184	}
	185
ecc5dd8f	186	//
ecc5dd8f	187	// Time of flight correction
003b43ed	188	//
9430b11a	189	if (fCurrentRecoParam&&fCurrentRecoParam->GetUseTOFCorrection()){
	190	const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
	191	Float_t sign=1;
	192	if (sector < kNIS) {
	193	sign = (sector < kNIS/2) ? 1 : -1;
	194	} else {
	195	sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
	196	}
	197	Float_t deltaDr =0;
	198	Float_t dist=0;
	199	dist+=(fPrimVtx[0]-x[0])*(fPrimVtx[0]-x[0]);
	200	dist+=(fPrimVtx[1]-x[1])*(fPrimVtx[1]-x[1]);
	201	dist+=(fPrimVtx[2]-x[2])*(fPrimVtx[2]-x[2]);
	202	dist = TMath::Sqrt(dist);
	203	// drift length correction because of TOF
	204	// the drift velocity is in cm/s therefore multiplication by 0.01
	205	deltaDr = (dist(0.01param->GetDriftV()))/TMath::C();
	206	xx[2]+=sign*deltaDr;
ecc5dd8f	207	}
9430b11a	208	//
	209	//
	210	//
	211
ecc5dd8f	212	//
c1bdda91	213	Global2RotatedGlobal(sector,xx);
2293155b	214
	215	//
	216	// Apply non linear distortion correction
	217	//
	218	if (distortionMapY ){
	219	//can be switch on for each dimension separatelly
	220	if (fCurrentRecoParam->GetUseFieldCorrection()&0x2)
	221	xx[1]-=distortionMapY->GetCalROC(sector)->GetValue(row,pad);
	222	if (fCurrentRecoParam->GetUseFieldCorrection()&0x4)
	223	xx[2]-=distortionMapZ->GetCalROC(sector)->GetValue(row,pad);
	224	}
	225
	226
003b43ed	227	//
c1bdda91	228	x[0]=xx[0];x[1]=xx[1];x[2]=xx[2];
	229	}
	230
24db6af7	231	void AliTPCTransform::Local2RotatedGlobal(Int_t sector, Double_t *x) const {
	232	//
	233	//
022ee144	234	// Tranform coordinate from
022ee144	235	// row, pad, time to x,y,z
24db6af7	236	//
022ee144	237	// Drift Velocity
022ee144	238	// Current implementation - common drift velocity - for full chamber
24db6af7	239	// TODO: use a map or parametrisation!
	240	//
	241	//
	242	//
9430b11a	243	const Int_t kMax =60; // cache for 60 seconds
	244	static Int_t lastStamp=-1; //cached values
	245	static Double_t lastCorr = 1;
	246	//
66954e3f	247	AliTPCcalibDB* calib=AliTPCcalibDB::Instance();
24db6af7	248	AliTPCParam * param = calib->GetParameters();
9430b11a	249	AliTPCCalibVdrift *driftCalib = AliTPCcalibDB::Instance()->GetVdrift(fCurrentRun);
	250	Double_t driftCorr = 1.;
	251	if (driftCalib){
	252	//
	253	// caching drift correction - temp. fix
	254	// Extremally slow procedure
	255	if ( TMath::Abs((lastStamp)-Int_t(fCurrentTimeStamp))<kMax){
	256	driftCorr = lastCorr;
	257	}else{
	258	driftCorr = 1.+(driftCalib->GetPTRelative(fCurrentTimeStamp,0)+ driftCalib->GetPTRelative(fCurrentTimeStamp,1))*0.5;
	259	lastCorr=driftCorr;
	260	lastStamp=fCurrentTimeStamp;
	261
	262	}
	263	}
43a74775	264	//
a8f8b6a1	265	// simple caching non thread save
	266	static Double_t vdcorrectionTime=1;
	267	static Double_t time0corrTime=0;
	268	static Int_t lastStampT=-1;
	269	//
817766d5	270	if (lastStampT!=(Int_t)fCurrentTimeStamp){
a8f8b6a1	271	lastStampT=fCurrentTimeStamp;
	272	if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionTime()>0) {
	273	vdcorrectionTime = (1+AliTPCcalibDB::Instance()->
	274	GetVDriftCorrectionTime(fCurrentTimeStamp,
fefec90f	275	fCurrentRun,
a8f8b6a1	276	sector%36>=18,
	277	fCurrentRecoParam->GetUseDriftCorrectionTime()));
	278	time0corrTime= AliTPCcalibDB::Instance()->
	279	GetTime0CorrectionTime(fCurrentTimeStamp,
fefec90f	280	fCurrentRun,
a8f8b6a1	281	sector%36>=18,
	282	fCurrentRecoParam->GetUseDriftCorrectionTime());
	283	}
	284	//
	285	if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionGY()>0) {
	286	Float_t xyzPad[3];
	287	AliTPCROC::Instance()->GetPositionGlobal(sector, TMath::Nint(x[0]) ,TMath::Nint(x[1]), xyzPad);
	288
	289	Double_t corrGy= (1+(xyzPad[1])*AliTPCcalibDB::Instance()->
	290	GetVDriftCorrectionGy(fCurrentTimeStamp,
	291	AliTPCcalibDB::Instance()->GetRun(),
	292	sector%36>=18,
	293	fCurrentRecoParam->GetUseDriftCorrectionGY()));
	294	vdcorrectionTime *=corrGy;
	295	}
43a74775	296	}
9430b11a	297
9430b11a	298
24db6af7	299	if (!param){
	300	AliFatal("Parameters missing");
	301	}
	302	Int_t row=TMath::Nint(x[0]);
9389f9a4	303	// Int_t pad=TMath::Nint(x[1]);
24db6af7	304	//
	305	const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
	306	Double_t sign = 1.;
43a74775	307	Double_t zwidth = param->GetZWidth()driftCorrvdcorrectionTime;
24db6af7	308	Double_t padWidth = 0;
	309	Double_t padLength = 0;
	310	Double_t maxPad = 0;
	311	//
	312	if (sector < kNIS) {
	313	maxPad = param->GetNPadsLow(row);
	314	sign = (sector < kNIS/2) ? 1 : -1;
	315	padLength = param->GetPadPitchLength(sector,row);
	316	padWidth = param->GetPadPitchWidth(sector);
	317	} else {
	318	maxPad = param->GetNPadsUp(row);
	319	sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
	320	padLength = param->GetPadPitchLength(sector,row);
	321	padWidth = param->GetPadPitchWidth(sector);
	322	}
	323	//
	324	// X coordinate
022ee144	325	x[0] = param->GetPadRowRadii(sector,row); // padrow X position - ideal
24db6af7	326	//
	327	// Y coordinate
	328	//
	329	x[1]=(x[1]-0.5maxPad)padWidth;
afbaa016	330	// pads are mirrorred on C-side
	331	if (sector%36>17){
	332	x[1]*=-1;
	333	}
	334
	335	//
	336
24db6af7	337	//
	338	// Z coordinate
	339	//
1e6337b1	340	if (AliTPCcalibDB::Instance()->IsTrgL0()){
	341	// by defualt we assume L1 trigger is used - make a correction in case of L0
	342	AliCTPTimeParams* ctp = AliTPCcalibDB::Instance()->GetCTPTimeParams();
	343	Double_t delay = ctp->GetDelayL1L0()*0.000000025;
	344	x[2]-=delay/param->GetTSample();
	345	}
	346	x[2]-= param->GetNTBinsL1();
24db6af7	347	x[2]*= zwidth; // tranform time bin to the distance to the ROC
1e6337b1	348	x[2]-= 3.*param->GetZSigma() + time0corrTime;
24db6af7	349	// subtract the time offsets
24db6af7	350	x[2] = sign*( param->GetZLength(sector) - x[2]);
c1bdda91	351	}
c1bdda91	352
c2da420d	353	void AliTPCTransform::RotatedGlobal2Global(Int_t sector,Double_t *x) const {
24db6af7	354	//
	355	// transform possition rotated global to the global
	356	//
c1bdda91	357	Double_t cos,sin;
	358	GetCosAndSin(sector,cos,sin);
	359	Double_t tmp=x[0];
e81544f7	360	x[0]= costmp-sinx[1];
e81544f7	361	x[1]=+sintmp+cosx[1];
c1bdda91	362	}
c1bdda91	363
c2da420d	364	void AliTPCTransform::Global2RotatedGlobal(Int_t sector,Double_t *x) const {
24db6af7	365	//
	366	// tranform possition Global2RotatedGlobal
	367	//
c1bdda91	368	Double_t cos,sin;
	369	GetCosAndSin(sector,cos,sin);
	370	Double_t tmp=x[0];
e81544f7	371	x[0]= costmp+sinx[1];
e81544f7	372	x[1]= -sintmp+cosx[1];
c1bdda91	373	}
c1bdda91	374
c2da420d	375	void AliTPCTransform::GetCosAndSin(Int_t sector,Double_t &cos,
c1bdda91	376	Double_t &sin) const {
	377	cos=fCoss[sector%18];
	378	sin=fSins[sector%18];
	379	}
	380
c1bdda91	381
43a74775	382	void AliTPCTransform::ApplyTransformations(Double_t /xyz/, Int_t /volID*/){
	383	//
	384	// Modify global position
	385	// xyz - global xyz position
	386	// volID - volID of detector (sector number)
	387	//
	388	//
	389
	390	}