[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 "AliTPCCorrection.h"
#include "TGeoMatrix.h"
#include "AliTPCRecoParam.h"
#include "AliTPCCalibVdrift.h"
#include "AliTPCTransform.h"
#include "AliMagF.h"
#include "TGeoGlobalMagField.h"
#include "AliTracker.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); 
  AliTPCCalPad * distortionMapR = calib->GetDistortionMap(2); 
  AliTPCParam  * param    = calib->GetParameters(); 
  AliTPCCorrection * correction = calib->GetTPCComposedCorrection();   // first user defined correction  // if does not exist  try to get it from calibDB array
  if (!correction) correction = calib->GetTPCComposedCorrection(AliTracker::GetBz());
  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);
  
  //
  // old ExB correction 
  //
  if(fCurrentRecoParam&&fCurrentRecoParam->GetUseExBCorrection()) {

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

  } else {

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

  //
  // new composed  correction  - will replace soon ExB correction
  //
  if(fCurrentRecoParam&&fCurrentRecoParam->GetUseComposedCorrection()&&correction) {
    Float_t distPoint[3]={xx[0],xx[1],xx[2]};
    correction->CorrectPoint(distPoint, sector);
    xx[0]=distPoint[0];
    xx[1]=distPoint[1];
    xx[2]=distPoint[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 ){
    // wt - to get it form the OCDB
    // ignore T1 and T2
    AliMagF* magF= (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
    Double_t bzField = magF->SolenoidField()/10.; //field in T
    Double_t vdrift = param->GetDriftV()/1000000.; // [cm/us]   // From dataBase: to be updated: per second (ideally)
    Double_t ezField = 400; // [V/cm]   // to be updated: never (hopefully)
    if (sector%36<18) ezField*=-1;
    Double_t wt = -10.0 * (bzField*10) * vdrift / ezField ;
    Double_t c0=1./(1.+wt*wt);
    Double_t c1=wt/c0;
    
    //can be switch on for each dimension separatelly
    if (fCurrentRecoParam->GetUseFieldCorrection()&0x2)
      if (distortionMapY){
	xx[1]-= c0*distortionMapY->GetCalROC(sector)->GetValue(row,pad);
	xx[0]-= c1*distortionMapY->GetCalROC(sector)->GetValue(row,pad);
      }
    if (fCurrentRecoParam->GetUseFieldCorrection()&0x4) 
      if (distortionMapZ)
	xx[2]-=distortionMapZ->GetCalROC(sector)->GetValue(row,pad);
    if (fCurrentRecoParam->GetUseFieldCorrection()&0x8) 
      if (distortionMapR){
	xx[0]-= c0*distortionMapR->GetCalROC(sector)->GetValue(row,pad);
	xx[1]-=-c1*distortionMapR->GetCalROC(sector)->GetValue(row,pad)*wt;
      }
    
  }
  //

  //
  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 vdcorrectionTimeGY=0;
  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) {
      
      Double_t corrGy= AliTPCcalibDB::Instance()->
			GetVDriftCorrectionGy(fCurrentTimeStamp, 
					      AliTPCcalibDB::Instance()->GetRun(),
					      sector%36>=18,
					      fCurrentRecoParam->GetUseDriftCorrectionGY());
      vdcorrectionTimeGY = 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;
  Float_t xyzPad[3];
  AliTPCROC::Instance()->GetPositionGlobal(sector, TMath::Nint(x[0]) ,TMath::Nint(x[1]), xyzPad);
  if (AliTPCRecoParam:: GetUseTimeCalibration()) zwidth*=vdcorrectionTime*(1+xyzPad[1]*vdcorrectionTimeGY);
  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();
    if (ctp){
      //for TPC standalone runs no ctp info
      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"
cf5b0aa0	62	#include "AliTPCCorrection.h"
66954e3f	63	#include "TGeoMatrix.h"
9430b11a	64	#include "AliTPCRecoParam.h"
9430b11a	65	#include "AliTPCCalibVdrift.h"
022ee144	66	#include "AliTPCTransform.h"
0b736a46	67	#include "AliMagF.h"
	68	#include "TGeoGlobalMagField.h"
	69	#include "AliTracker.h"
1e6337b1	70	#include <AliCTPTimeParams.h>
022ee144	71
66954e3f	72	ClassImp(AliTPCTransform)
022ee144	73
022ee144	74
9430b11a	75	AliTPCTransform::AliTPCTransform():
	76	AliTransform(),
	77	fCurrentRecoParam(0), //! current reconstruction parameters
	78	fCurrentRun(0), //! current run
	79	fCurrentTimeStamp(0) //! current time stamp
	80	{
	81	//
	82	// Speed it up a bit!
	83	//
	84	for (Int_t i=0;i<18;++i) {
	85	Double_t alpha=TMath::DegToRad()(10.+20.(i%18));
	86	fSins[i]=TMath::Sin(alpha);
	87	fCoss[i]=TMath::Cos(alpha);
	88	}
	89	fPrimVtx[0]=0;
	90	fPrimVtx[1]=0;
	91	fPrimVtx[2]=0;
	92	}
	93	AliTPCTransform::AliTPCTransform(const AliTPCTransform& transform):
	94	AliTransform(transform),
	95	fCurrentRecoParam(transform.fCurrentRecoParam), //! current reconstruction parameters
	96	fCurrentRun(transform.fCurrentRun), //! current run
	97	fCurrentTimeStamp(transform.fCurrentTimeStamp) //! current time stamp
003b43ed	98	{
24db6af7	99	//
c1bdda91	100	// Speed it up a bit!
24db6af7	101	//
c1bdda91	102	for (Int_t i=0;i<18;++i) {
	103	Double_t alpha=TMath::DegToRad()(10.+20.(i%18));
	104	fSins[i]=TMath::Sin(alpha);
	105	fCoss[i]=TMath::Cos(alpha);
	106	}
003b43ed	107	fPrimVtx[0]=0;
	108	fPrimVtx[1]=0;
	109	fPrimVtx[2]=0;
c1bdda91	110	}
	111
	112	AliTPCTransform::~AliTPCTransform() {
24db6af7	113	//
	114	// Destructor
	115	//
c1bdda91	116	}
c1bdda91	117
003b43ed	118	void AliTPCTransform::SetPrimVertex(Double_t *vtx){
	119	//
	120	//
	121	//
	122	fPrimVtx[0]=vtx[0];
	123	fPrimVtx[1]=vtx[1];
	124	fPrimVtx[2]=vtx[2];
	125	}
	126
	127
24db6af7	128	void AliTPCTransform::Transform(Double_t x,Int_t i,UInt_t /time/,
003b43ed	129	Int_t /coordinateType/) {
24db6af7	130	// input: x[0] - pad row
24db6af7	131	// x[1] - pad
c1bdda91	132	// x[2] - time in us
	133	// i[0] - sector
	134	// output: x[0] - x (all in the rotated global coordinate frame)
	135	// x[1] - y
	136	// x[2] - z
ecc5dd8f	137	//
	138	// primvtx - position of the primary vertex
	139	// used for the TOF correction
	140	// TOF of particle calculated assuming the speed-of-light and
	141	// line approximation
	142	//
	143
24db6af7	144	Int_t row=TMath::Nint(x[0]);
24db6af7	145	Int_t pad=TMath::Nint(x[1]);
c1bdda91	146	Int_t sector=i[0];
9430b11a	147	AliTPCcalibDB* calib=AliTPCcalibDB::Instance();
24db6af7	148	//
24db6af7	149	AliTPCCalPad * time0TPC = calib->GetPadTime0();
2293155b	150	AliTPCCalPad * distortionMapY = calib->GetDistortionMap(0);
2293155b	151	AliTPCCalPad * distortionMapZ = calib->GetDistortionMap(1);
4486a91f	152	AliTPCCalPad * distortionMapR = calib->GetDistortionMap(2);
24db6af7	153	AliTPCParam * param = calib->GetParameters();
0b736a46	154	AliTPCCorrection * correction = calib->GetTPCComposedCorrection(); // first user defined correction // if does not exist try to get it from calibDB array
0b736a46	155	if (!correction) correction = calib->GetTPCComposedCorrection(AliTracker::GetBz());
24db6af7	156	if (!time0TPC){
	157	AliFatal("Time unisochronity missing");
	158	}
c1bdda91	159
24db6af7	160	if (!param){
	161	AliFatal("Parameters missing");
	162	}
c1bdda91	163
24db6af7	164	Double_t xx[3];
	165	// Apply Time0 correction - Pad by pad fluctuation
	166	//
9fb81082	167	x[2]-=time0TPC->GetCalROC(sector)->GetValue(row,pad);
24db6af7	168	//
	169	// Tranform from pad - time coordinate system to the rotated global (tracking) system
	170	//
	171	Local2RotatedGlobal(sector,x);
	172	//
	173	//
	174	//
c1bdda91	175	// Alignment
c1bdda91	176	//TODO: calib->GetParameters()->GetClusterMatrix(sector)->LocalToMaster(x,xx);
c1bdda91	177	RotatedGlobal2Global(sector,x);
cf5b0aa0	178
24db6af7	179	//
cf5b0aa0	180	// old ExB correction
24db6af7	181	//
3ce45991	182	if(fCurrentRecoParam&&fCurrentRecoParam->GetUseExBCorrection()) {
	183
	184	calib->GetExB()->Correct(x,xx);
	185
	186	} else {
	187
	188	xx[0] = x[0];
	189	xx[1] = x[1];
	190	xx[2] = x[2];
	191	}
	192
cf5b0aa0	193	//
	194	// new composed correction - will replace soon ExB correction
	195	//
	196	if(fCurrentRecoParam&&fCurrentRecoParam->GetUseComposedCorrection()&&correction) {
	197	Float_t distPoint[3]={xx[0],xx[1],xx[2]};
	198	correction->CorrectPoint(distPoint, sector);
	199	xx[0]=distPoint[0];
	200	xx[1]=distPoint[1];
	201	xx[2]=distPoint[2];
	202	}
	203
	204
ecc5dd8f	205	//
ecc5dd8f	206	// Time of flight correction
003b43ed	207	//
9430b11a	208	if (fCurrentRecoParam&&fCurrentRecoParam->GetUseTOFCorrection()){
	209	const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
	210	Float_t sign=1;
	211	if (sector < kNIS) {
	212	sign = (sector < kNIS/2) ? 1 : -1;
	213	} else {
	214	sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
	215	}
	216	Float_t deltaDr =0;
	217	Float_t dist=0;
	218	dist+=(fPrimVtx[0]-x[0])*(fPrimVtx[0]-x[0]);
	219	dist+=(fPrimVtx[1]-x[1])*(fPrimVtx[1]-x[1]);
	220	dist+=(fPrimVtx[2]-x[2])*(fPrimVtx[2]-x[2]);
	221	dist = TMath::Sqrt(dist);
	222	// drift length correction because of TOF
	223	// the drift velocity is in cm/s therefore multiplication by 0.01
	224	deltaDr = (dist(0.01param->GetDriftV()))/TMath::C();
	225	xx[2]+=sign*deltaDr;
ecc5dd8f	226	}
9430b11a	227	//
	228	//
	229	//
	230
ecc5dd8f	231	//
c1bdda91	232	Global2RotatedGlobal(sector,xx);
2293155b	233
	234	//
	235	// Apply non linear distortion correction
	236	//
	237	if (distortionMapY ){
0b736a46	238	// wt - to get it form the OCDB
	239	// ignore T1 and T2
	240	AliMagF* magF= (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
	241	Double_t bzField = magF->SolenoidField()/10.; //field in T
	242	Double_t vdrift = param->GetDriftV()/1000000.; // [cm/us] // From dataBase: to be updated: per second (ideally)
	243	Double_t ezField = 400; // [V/cm] // to be updated: never (hopefully)
	244	if (sector%36<18) ezField*=-1;
	245	Double_t wt = -10.0 * (bzField10) vdrift / ezField ;
	246	Double_t c0=1./(1.+wt*wt);
	247	Double_t c1=wt/c0;
	248
2293155b	249	//can be switch on for each dimension separatelly
4486a91f	250	if (fCurrentRecoParam->GetUseFieldCorrection()&0x2)
0b736a46	251	if (distortionMapY){
	252	xx[1]-= c0*distortionMapY->GetCalROC(sector)->GetValue(row,pad);
	253	xx[0]-= c1*distortionMapY->GetCalROC(sector)->GetValue(row,pad);
	254	}
2293155b	255	if (fCurrentRecoParam->GetUseFieldCorrection()&0x4)
4486a91f	256	if (distortionMapZ)
	257	xx[2]-=distortionMapZ->GetCalROC(sector)->GetValue(row,pad);
	258	if (fCurrentRecoParam->GetUseFieldCorrection()&0x8)
0b736a46	259	if (distortionMapR){
	260	xx[0]-= c0*distortionMapR->GetCalROC(sector)->GetValue(row,pad);
	261	xx[1]-=-c1distortionMapR->GetCalROC(sector)->GetValue(row,pad)wt;
	262	}
	263
2293155b	264	}
4486a91f	265	//
2293155b	266
003b43ed	267	//
c1bdda91	268	x[0]=xx[0];x[1]=xx[1];x[2]=xx[2];
	269	}
	270
24db6af7	271	void AliTPCTransform::Local2RotatedGlobal(Int_t sector, Double_t *x) const {
	272	//
	273	//
022ee144	274	// Tranform coordinate from
022ee144	275	// row, pad, time to x,y,z
24db6af7	276	//
022ee144	277	// Drift Velocity
022ee144	278	// Current implementation - common drift velocity - for full chamber
24db6af7	279	// TODO: use a map or parametrisation!
	280	//
	281	//
	282	//
9430b11a	283	const Int_t kMax =60; // cache for 60 seconds
	284	static Int_t lastStamp=-1; //cached values
	285	static Double_t lastCorr = 1;
	286	//
66954e3f	287	AliTPCcalibDB* calib=AliTPCcalibDB::Instance();
24db6af7	288	AliTPCParam * param = calib->GetParameters();
9430b11a	289	AliTPCCalibVdrift *driftCalib = AliTPCcalibDB::Instance()->GetVdrift(fCurrentRun);
	290	Double_t driftCorr = 1.;
	291	if (driftCalib){
	292	//
	293	// caching drift correction - temp. fix
	294	// Extremally slow procedure
	295	if ( TMath::Abs((lastStamp)-Int_t(fCurrentTimeStamp))<kMax){
	296	driftCorr = lastCorr;
	297	}else{
	298	driftCorr = 1.+(driftCalib->GetPTRelative(fCurrentTimeStamp,0)+ driftCalib->GetPTRelative(fCurrentTimeStamp,1))*0.5;
	299	lastCorr=driftCorr;
	300	lastStamp=fCurrentTimeStamp;
	301
	302	}
	303	}
43a74775	304	//
a8f8b6a1	305	// simple caching non thread save
a8f8b6a1	306	static Double_t vdcorrectionTime=1;
5647625c	307	static Double_t vdcorrectionTimeGY=0;
a8f8b6a1	308	static Double_t time0corrTime=0;
	309	static Int_t lastStampT=-1;
	310	//
817766d5	311	if (lastStampT!=(Int_t)fCurrentTimeStamp){
a8f8b6a1	312	lastStampT=fCurrentTimeStamp;
	313	if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionTime()>0) {
	314	vdcorrectionTime = (1+AliTPCcalibDB::Instance()->
	315	GetVDriftCorrectionTime(fCurrentTimeStamp,
fefec90f	316	fCurrentRun,
a8f8b6a1	317	sector%36>=18,
	318	fCurrentRecoParam->GetUseDriftCorrectionTime()));
	319	time0corrTime= AliTPCcalibDB::Instance()->
	320	GetTime0CorrectionTime(fCurrentTimeStamp,
fefec90f	321	fCurrentRun,
a8f8b6a1	322	sector%36>=18,
	323	fCurrentRecoParam->GetUseDriftCorrectionTime());
	324	}
	325	//
	326	if(fCurrentRecoParam&&fCurrentRecoParam->GetUseDriftCorrectionGY()>0) {
a8f8b6a1	327
5647625c	328	Double_t corrGy= AliTPCcalibDB::Instance()->
a8f8b6a1	329	GetVDriftCorrectionGy(fCurrentTimeStamp,
	330	AliTPCcalibDB::Instance()->GetRun(),
	331	sector%36>=18,
5647625c	332	fCurrentRecoParam->GetUseDriftCorrectionGY());
5647625c	333	vdcorrectionTimeGY = corrGy;
a8f8b6a1	334	}
43a74775	335	}
9430b11a	336
9430b11a	337
24db6af7	338	if (!param){
	339	AliFatal("Parameters missing");
	340	}
	341	Int_t row=TMath::Nint(x[0]);
9389f9a4	342	// Int_t pad=TMath::Nint(x[1]);
24db6af7	343	//
	344	const Int_t kNIS=param->GetNInnerSector(), kNOS=param->GetNOuterSector();
	345	Double_t sign = 1.;
502d13b5	346	Double_t zwidth = param->GetZWidth()*driftCorr;
5647625c	347	Float_t xyzPad[3];
	348	AliTPCROC::Instance()->GetPositionGlobal(sector, TMath::Nint(x[0]) ,TMath::Nint(x[1]), xyzPad);
	349	if (AliTPCRecoParam:: GetUseTimeCalibration()) zwidth=vdcorrectionTime(1+xyzPad[1]*vdcorrectionTimeGY);
24db6af7	350	Double_t padWidth = 0;
	351	Double_t padLength = 0;
	352	Double_t maxPad = 0;
	353	//
	354	if (sector < kNIS) {
	355	maxPad = param->GetNPadsLow(row);
	356	sign = (sector < kNIS/2) ? 1 : -1;
	357	padLength = param->GetPadPitchLength(sector,row);
	358	padWidth = param->GetPadPitchWidth(sector);
	359	} else {
	360	maxPad = param->GetNPadsUp(row);
	361	sign = ((sector-kNIS) < kNOS/2) ? 1 : -1;
	362	padLength = param->GetPadPitchLength(sector,row);
	363	padWidth = param->GetPadPitchWidth(sector);
	364	}
	365	//
	366	// X coordinate
022ee144	367	x[0] = param->GetPadRowRadii(sector,row); // padrow X position - ideal
24db6af7	368	//
	369	// Y coordinate
	370	//
	371	x[1]=(x[1]-0.5maxPad)padWidth;
afbaa016	372	// pads are mirrorred on C-side
	373	if (sector%36>17){
	374	x[1]*=-1;
	375	}
	376
	377	//
	378
24db6af7	379	//
	380	// Z coordinate
	381	//
1e6337b1	382	if (AliTPCcalibDB::Instance()->IsTrgL0()){
	383	// by defualt we assume L1 trigger is used - make a correction in case of L0
	384	AliCTPTimeParams* ctp = AliTPCcalibDB::Instance()->GetCTPTimeParams();
3d1b41c1	385	if (ctp){
	386	//for TPC standalone runs no ctp info
	387	Double_t delay = ctp->GetDelayL1L0()*0.000000025;
	388	x[2]-=delay/param->GetTSample();
	389	}
1e6337b1	390	}
1e6337b1	391	x[2]-= param->GetNTBinsL1();
24db6af7	392	x[2]*= zwidth; // tranform time bin to the distance to the ROC
1e6337b1	393	x[2]-= 3.*param->GetZSigma() + time0corrTime;
24db6af7	394	// subtract the time offsets
24db6af7	395	x[2] = sign*( param->GetZLength(sector) - x[2]);
c1bdda91	396	}
c1bdda91	397
c2da420d	398	void AliTPCTransform::RotatedGlobal2Global(Int_t sector,Double_t *x) const {
24db6af7	399	//
	400	// transform possition rotated global to the global
	401	//
c1bdda91	402	Double_t cos,sin;
	403	GetCosAndSin(sector,cos,sin);
	404	Double_t tmp=x[0];
e81544f7	405	x[0]= costmp-sinx[1];
e81544f7	406	x[1]=+sintmp+cosx[1];
c1bdda91	407	}
c1bdda91	408
c2da420d	409	void AliTPCTransform::Global2RotatedGlobal(Int_t sector,Double_t *x) const {
24db6af7	410	//
	411	// tranform possition Global2RotatedGlobal
	412	//
c1bdda91	413	Double_t cos,sin;
	414	GetCosAndSin(sector,cos,sin);
	415	Double_t tmp=x[0];
e81544f7	416	x[0]= costmp+sinx[1];
e81544f7	417	x[1]= -sintmp+cosx[1];
c1bdda91	418	}
c1bdda91	419
c2da420d	420	void AliTPCTransform::GetCosAndSin(Int_t sector,Double_t &cos,
c1bdda91	421	Double_t &sin) const {
	422	cos=fCoss[sector%18];
	423	sin=fSins[sector%18];
	424	}
	425
c1bdda91	426
43a74775	427	void AliTPCTransform::ApplyTransformations(Double_t /xyz/, Int_t /volID*/){
	428	//
	429	// Modify global position
	430	// xyz - global xyz position
	431	// volID - volID of detector (sector number)
	432	//
	433	//
	434
	435	}