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