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


///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  This class is a container class for the laser beam positions of          //
//  the TPC laser system (ALICE-INT-2002-022  v.1 ).                         //
//  The system consits of 6 Laser Rods, each contains four mirror bundels    //
//  on each side of the TPC. Each bundle has seven mirrors.                  //
//                                                                           //
//  The TPC side 0 corresponds to the "Shaft Side (A)", side 1 corresponds   //
//  to the "Muon Side (C)".
//  The laser rods are counted counter clockwise starting with the one       //
//  with the smalles phi angle.                                              //
//  The mirror bundles in one rod for each side are counted starting from    //
//  form the greatest z value to the smalles.                                //
//  The beams in each bundel are counted counter clockwise. Having all beams //
//  pointing downward, the first beam will be the leftmost.                  //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

/*
 Create File with design positions

 .L AliTPCLaserTrack.cxx+
 AliTPCLaserTracks ltracks
 ltracks.WriteTreeDesignData()
 TFile f("LaserTracksDesing.root");
 TTree * tree =(TTree*)f.Get("LaserTracks");
 
*/

#include <iostream.h>
#include <TString.h>
#include <TPolyLine3D.h>
#include <TMath.h>
#include <TTree.h>
#include <TFile.h>
#include <TEventList.h>
#include <TVector2.h>
#include <TVector3.h>
#include <TROOT.h>

#include <TGraph.h>


#include "AliTPCLaserTracks.h"

////////////////////////////////////////////////////////////////////////
//              Class AliTPCLaserTracks
////////////////////////////////////////////////////////////////////////

ClassImp(AliTPCLaserTracks)

AliTPCLaserTracks::AliTPCLaserTracks():
    fId(-1),
    fSide(-1),
    fRod(-1),
    fBundle(-1),
    fBeam(-1),
    fX(0),
    fY(0),
    fZ(0),
    fPhi(0),
    fTheta(0),
    fMaxSize(0),
    fNpoints(0),
    fXarr(0x0),
    fYarr(0x0),
    fZarr(0x0)

{
    //
    //  AliTPCLaserTracks default constructor
    //
}

//_______________________________________________________________________
AliTPCLaserTracks::AliTPCLaserTracks(Int_t npoints):
    fId(-1),
    fSide(-1),
    fRod(-1),
    fBundle(-1),
    fBeam(-1),
    fX(0),
    fY(0),
    fZ(0),
    fPhi(0),
    fTheta(0),
    fMaxSize(0),
    fNpoints(0),
    fXarr(0x0),
    fYarr(0x0),
    fZarr(0x0)

{
    //
    //  AliTPCLaserTracks constructor to initialise array of points
    //
    fNpoints = npoints;
    InitPoints();
}

//_______________________________________________________________________
Double_t AliTPCLaserTracks::FindBeamLength(TVector3 vF, TVector3 vP)
{
    //
    //  Find distance between mirror and the intersection between
    //  inner and outer field cage respectively
    //
    //  use the pq formula to find the intersection point between
    //  the beam and the inner and outer fieldcage cylinders
    //  The formulae solved are
    //
    //                        line = zylinder
    //  xPoint = vF.X() + n*vP.X() = r*cos(phi)
    //  yPoint = vF.Y() + n*vP.Y() = r*sin(phi)
    //  zPoint = vF.Y() + n*vP.Y()
    //
    //  get n from the first two equations, calculate x,y,zPoint
    //
    //  vF is the mirror position and vP the beam direction
    Double_t r[2];  //smalles r[0] and largest r[1] pad radius
    r[0] = 80.0;  //smalles pad radius
    r[1] = 260.0;   //largest pad radius

    Double_t fxpxfypy = vF.X()*vP.X()+vF.Y()*vP.Y();
    Double_t px2py2   = vP.X()*vP.X()+vP.Y()*vP.Y();

    for (Int_t i=0; i<2; i++){
	Double_t rad = (fxpxfypy/px2py2)*(fxpxfypy/px2py2)-
	              (vF.X()*vF.X()+vF.Y()*vF.Y()-r[i]*r[i])/px2py2;

	if ( rad >= 0 ){
	    Double_t n1   = -(fxpxfypy)/px2py2+TMath::Sqrt(rad);
	    TVector3 vI1(vF.X()+n1*vP.X(),
			 vF.Y()+n1*vP.Y(),
			 vF.Z()+n1*vP.Z());

	    Double_t n2   = -(fxpxfypy)/px2py2-TMath::Sqrt(rad);
	    TVector3 vI2(vF.X()+n2*vP.X(),
			 vF.Y()+n2*vP.Y(),
			 vF.Z()+n2*vP.Z());


	    //if we cross two boarders on our way return the closer boarder
            if ( n1>0 && n2>0 )
		if ( (vF-vI1).Mag() <= (vF-vI2).Mag() )
		    return (vF-vI1).Mag();
		else
		    return (vF-vI2).Mag();

	    if ( n1>0 )
		return (vF-vI1).Mag();

	    if ( n2>0 )
		return (vF-vI2).Mag();

	}
    }

    return 3.4e38;  //not found!!
}

//_______________________________________________________________________
void AliTPCLaserTracks::WriteTreeDesignData()
{
    //
    //   Write a tree with the design data of the laser track positions
    //

    TFile *f = TFile::Open("LaserTracksDesing.root","recreate");

    AliTPCLaserTracks *ltp = new AliTPCLaserTracks(2);

    TTree *t = new TTree("LaserTracks","LaserTracks");
    t->Branch("LaserTracks","AliTPCLaserTracks",&ltp);
    t->AutoSave();

    Double_t phiBeam[7]         = {-31.8,-16.,-9.2,2.5,9.2,16.,31.8};
    Double_t phiRod[6]          = {40.,100.,160.,220.,280.,340.};     //-20. for the muon side
//    Double_t zBundleCorse[2][4] = {{10,79,163,241},{13,85,169,247}};
    Double_t zBundleCorse[2][4] = {{241.,163.,79.,10.},{247.,169.,85.,13.}};
    Double_t zBeamFine[7]       = {1.45,1.3,1.15,1.3,1.15,1.3,1.45};

    Int_t id=0;
    //loop over TPC side -- 0:A (Shaft) side -- 1:C (Muon) side
    for (Int_t side=0; side<2; side++){
	//loop over laser rods -- counterclockwise
	for (Int_t rod=0; rod<6; rod++){
            //center of the rod
	    TVector2 vRod;

            Double_t phiRod2 = phiRod[rod]-side*20;
	    vRod.SetMagPhi(254.25,                   //center of the rod at 254.25cm
			   TMath::DegToRad()*
			   (phiRod2)  //-20 deg on C-Side
			  );

	    //loop over bundle -- counted from large z to small z
	    for (Int_t bundle=0; bundle<4; bundle++){
		//center of the bundle; not yet rotated
                Int_t bundleS = bundle;
		//		if ( side == 1 ) bundleS = 4-bundle;
		if ( side == 1 ) bundleS = 3-bundle;

		TVector2 vBundle;
		vBundle.SetMagPhi(.65,
				  TMath::DegToRad()*
				//?  TMath::Power(-1,side)*
				  (phiRod2+180.-90.*bundleS)
				 );

		//loop over beam
                Int_t i=0;
		for (Int_t beam=0; beam<7; beam++){
		    TVector2 vBeam;
		    if ( beam == 3 )
			vBeam.Set(0.,0.);
		    else{
			vBeam.SetMagPhi(1.,TMath::DegToRad()*(phiRod2+i*60));
                        i++;
		    }

		    TVector2 xyMirror = vRod+vBundle+vBeam;
		    Double_t zMirror   = (zBundleCorse[rod%2][bundleS]+zBeamFine[beam])*TMath::Power(-1,side);
                    TVector3 v3Mirror(xyMirror.X(),xyMirror.Y(),zMirror);

		    Double_t phi      = TMath::DegToRad()*(phiRod2+180+phiBeam[beam]*TMath::Power(-1,side));
                    Double_t theta    = TMath::DegToRad()*90;

		    TVector3 v3Beam;
		    v3Beam.SetMagThetaPhi(1,theta,phi);  //Direction Vector
                    v3Beam.SetMagThetaPhi(FindBeamLength(v3Mirror,v3Beam), theta, phi);


		    ltp->SetId(id);
		    ltp->SetSide(side);
		    ltp->SetRod(rod);
		    ltp->SetBundle(bundleS);
		    ltp->SetBeam(beam);

		    ltp->SetX(xyMirror.X());
		    ltp->SetY(xyMirror.Y());
		    ltp->SetZ(zMirror);

		    ltp->SetPhi(phi);
		    ltp->SetTheta(theta);

//		    ltp->InitPoints(2);
		    ltp->SetPoint(0,xyMirror.X(),xyMirror.Y(),zMirror);
		    ltp->SetPoint(1,xyMirror.X()+v3Beam.X(),xyMirror.Y()+v3Beam.Y(),zMirror+v3Beam.Z());

		    cout<< "Id: " << id
			<< "  Side: " << side
			<< "  Rod: " << rod
			<< "  Bundle: " << bundleS
			<< "  Beam: " << beam
			<< endl;


		    t->Fill();
                    //delete line;
                    id++;
//		    cout << "Filled!!!" << endl;
		}
	    }
	}
    }

    t->Write();
    delete f;
//    delete t;
//    delete ltp;
//    delete line;
}

//_______________________________________________________________________
TPolyLine3D* AliTPCLaserTracks::GetLine()
{
   if ( fNpoints ) return new TPolyLine3D(fNpoints,fXarr,fYarr,fZarr);

    return 0x0;
}

//_______________________________________________________________________
TObjArray* AliTPCLaserTracks::GetLines(Char_t* file, Char_t *cuts)
{

    TObjArray *array = new TObjArray;

    TFile *f = TFile::Open(file,"read");
    TTree *tree = (TTree*)f->Get("LaserTracks");

    AliTPCLaserTracks *ltp = new AliTPCLaserTracks();
//    TEventList *evList = new TEventList("evList");
    TEventList evList("evList");

    tree->SetBranchAddress("LaserTracks",&ltp);

    tree->Draw(">>evList",cuts,"goff");

//    cout << "N: " << evList.GetN() << endl;
    gROOT->cd();
    for (Int_t ev = 0; ev < evList.GetN(); ev++){
//        cout << ev << endl;
	tree->GetEntry( evList.GetEntry(ev) );
        array->Add(ltp->GetLine());
    }
//    cout << "delte f"<< endl;
//    delete f;

//    cout << "evlist" << endl;

    return array;
}

//_______________________________________________________________________
void AliTPCLaserTracks::InitPoints()
{
    //
    //  Init point arrays
    //

    fMaxSize = fNpoints;
    fXarr = new Double_t[fMaxSize];
    fYarr = new Double_t[fMaxSize];
    fZarr = new Double_t[fMaxSize];
}

//_______________________________________________________________________
Int_t AliTPCLaserTracks::SetPoint(Int_t point, Double_t x, Double_t y, Double_t z)
{
    //
    // Set point to point arrays
    //

    if ( !fXarr || !fYarr || !fZarr ) return 1;
    if ( point > fNpoints-1 ) return 1;

    fXarr[point] = x;
    fYarr[point] = y;
    fZarr[point] = z;
    return 0;
}

//_______________________________________________________________________
Int_t AliTPCLaserTracks::FindMirror(Char_t *file, Double_t x, Double_t y, Double_t z, Double_t phi)
{
    //
    //  return the id of the mirror in 'file' that maches best the given parameters
    //

    TFile *f = TFile::Open(file,"read");
    TTree *tree = (TTree*)f->Get("LaserTracks");

    AliTPCLaserTracks *ltp = new AliTPCLaserTracks();
    TEventList evList("evList");

    tree->SetBranchAddress("LaserTracks",&ltp);

    TString s;
    s = "abs(fX-"; s+= x;
    s+= ")<3&&abs(fY-"; s+=y;
    s+= ")<3&&abs(fZ-"; s+= z;
    s+= ")<1.5";
//    s+= "&&((abs(fPhi-";s+= phi;
//    s+= ")<.06)||(abs(fPhi-";s+= (phi-TMath::DegToRad()*180);
//    s+= ")<.06))";
    cout << s.Data() << endl;

    tree->Draw(">>evList",s.Data());

    Double_t dphiMin=TMath::Pi();
    Int_t id=-1;

    cout << "nev: " << evList.GetN() << endl;
    for (Int_t i=0; i<evList.GetN(); i++){
	tree->GetEntry( evList.GetEntry(i) );
	Double_t dphi = TMath::Abs(ltp->GetPhi() - phi);
	if ( dphi > TMath::DegToRad()*180 ) dphi-=TMath::DegToRad()*180;
	if ( dphi<dphiMin ) {
            dphiMin = dphi;
	    id = ltp->GetId();
	}
    }

    return id;
    delete f;
}

//_______________________________________________________________________
AliTPCLaserTracks::~AliTPCLaserTracks()
{
    //
    //  standard destructor
    //

//    if ( fP ) delete fP;
    if ( fXarr ) delete fXarr;
    if ( fYarr ) delete fYarr;
    if ( fZarr ) delete fZarr;
}
Commit	Line	Data
1e9e3c7c	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	///////////////////////////////////////////////////////////////////////////////
	18	// //
	19	// This class is a container class for the laser beam positions of //
	20	// the TPC laser system (ALICE-INT-2002-022 v.1 ). //
	21	// The system consits of 6 Laser Rods, each contains four mirror bundels //
	22	// on each side of the TPC. Each bundle has seven mirrors. //
	23	// //
	24	// The TPC side 0 corresponds to the "Shaft Side (A)", side 1 corresponds //
	25	// to the "Muon Side (C)".
	26	// The laser rods are counted counter clockwise starting with the one //
	27	// with the smalles phi angle. //
	28	// The mirror bundles in one rod for each side are counted starting from //
	29	// form the greatest z value to the smalles. //
	30	// The beams in each bundel are counted counter clockwise. Having all beams //
	31	// pointing downward, the first beam will be the leftmost. //
	32	// //
	33	///////////////////////////////////////////////////////////////////////////////
	34
	35	/*
	36	Create File with design positions
	37
	38	.L AliTPCLaserTrack.cxx+
	39	AliTPCLaserTracks ltracks
	40	ltracks.WriteTreeDesignData()
	41	TFile f("LaserTracksDesing.root");
	42	TTree * tree =(TTree*)f.Get("LaserTracks");
	43
	44	*/
	45
	46	#include <iostream.h>
	47	#include <TString.h>
	48	#include <TPolyLine3D.h>
	49	#include <TMath.h>
	50	#include <TTree.h>
	51	#include <TFile.h>
	52	#include <TEventList.h>
	53	#include <TVector2.h>
	54	#include <TVector3.h>
	55	#include <TROOT.h>
	56
	57	#include <TGraph.h>
	58
	59
	60	#include "AliTPCLaserTracks.h"
	61
	62	////////////////////////////////////////////////////////////////////////
	63	// Class AliTPCLaserTracks
	64	////////////////////////////////////////////////////////////////////////
65
66	ClassImp(AliTPCLaserTracks)
67
68	AliTPCLaserTracks::AliTPCLaserTracks():
69	fId(-1),
70	fSide(-1),
71	fRod(-1),
72	fBundle(-1),
73	fBeam(-1),
74	fX(0),
75	fY(0),
76	fZ(0),
77	fPhi(0),
78	fTheta(0),
79	fMaxSize(0),
80	fNpoints(0),
81	fXarr(0x0),
82	fYarr(0x0),
83	fZarr(0x0)
84
85	{
86	//
87	// AliTPCLaserTracks default constructor
88	//
89	}
90
91	//_______________________________________________________________________
92	AliTPCLaserTracks::AliTPCLaserTracks(Int_t npoints):
93	fId(-1),
94	fSide(-1),
95	fRod(-1),
96	fBundle(-1),
97	fBeam(-1),
98	fX(0),
99	fY(0),
100	fZ(0),
101	fPhi(0),
102	fTheta(0),
103	fMaxSize(0),
104	fNpoints(0),
105	fXarr(0x0),
106	fYarr(0x0),
107	fZarr(0x0)
108
109	{
110	//
111	// AliTPCLaserTracks constructor to initialise array of points
112	//
113	fNpoints = npoints;
114	InitPoints();
115	}
116
117	//_______________________________________________________________________
118	Double_t AliTPCLaserTracks::FindBeamLength(TVector3 vF, TVector3 vP)
119	{
120	//
121	// Find distance between mirror and the intersection between
122	// inner and outer field cage respectively
123	//
124	// use the pq formula to find the intersection point between
125	// the beam and the inner and outer fieldcage cylinders
126	// The formulae solved are
127	//
128	// line = zylinder
129	// xPoint = vF.X() + nvP.X() = rcos(phi)
130	// yPoint = vF.Y() + nvP.Y() = rsin(phi)
131	// zPoint = vF.Y() + n*vP.Y()
132	//
133	// get n from the first two equations, calculate x,y,zPoint
134	//
135	// vF is the mirror position and vP the beam direction
136	Double_t r[2]; //smalles r[0] and largest r[1] pad radius
137	r[0] = 80.0; //smalles pad radius
138	r[1] = 260.0; //largest pad radius
139
140	Double_t fxpxfypy = vF.X()vP.X()+vF.Y()vP.Y();
141	Double_t px2py2 = vP.X()vP.X()+vP.Y()vP.Y();
142
143	for (Int_t i=0; i<2; i++){
144	Double_t rad = (fxpxfypy/px2py2)*(fxpxfypy/px2py2)-
145	(vF.X()vF.X()+vF.Y()vF.Y()-r[i]*r[i])/px2py2;
146
147	if ( rad >= 0 ){
148	Double_t n1 = -(fxpxfypy)/px2py2+TMath::Sqrt(rad);
149	TVector3 vI1(vF.X()+n1*vP.X(),
150	vF.Y()+n1*vP.Y(),
151	vF.Z()+n1*vP.Z());
152
153	Double_t n2 = -(fxpxfypy)/px2py2-TMath::Sqrt(rad);
154	TVector3 vI2(vF.X()+n2*vP.X(),
155	vF.Y()+n2*vP.Y(),
156	vF.Z()+n2*vP.Z());
157
158
159	//if we cross two boarders on our way return the closer boarder
160	if ( n1>0 && n2>0 )
161	if ( (vF-vI1).Mag() <= (vF-vI2).Mag() )
162	return (vF-vI1).Mag();
163	else
164	return (vF-vI2).Mag();
165
166	if ( n1>0 )
167	return (vF-vI1).Mag();
168
169	if ( n2>0 )
170	return (vF-vI2).Mag();
171
172	}
173	}
174
175	return 3.4e38; //not found!!
176	}
177
178	//_______________________________________________________________________
179	void AliTPCLaserTracks::WriteTreeDesignData()
180	{
181	//
182	// Write a tree with the design data of the laser track positions
183	//
184
185	TFile *f = TFile::Open("LaserTracksDesing.root","recreate");
186
187	AliTPCLaserTracks *ltp = new AliTPCLaserTracks(2);
188
189	TTree *t = new TTree("LaserTracks","LaserTracks");
190	t->Branch("LaserTracks","AliTPCLaserTracks",&ltp);
191	t->AutoSave();
192
193	Double_t phiBeam[7] = {-31.8,-16.,-9.2,2.5,9.2,16.,31.8};
194	Double_t phiRod[6] = {40.,100.,160.,220.,280.,340.}; //-20. for the muon side
195	// Double_t zBundleCorse[2][4] = {{10,79,163,241},{13,85,169,247}};
196	Double_t zBundleCorse[2][4] = {{241.,163.,79.,10.},{247.,169.,85.,13.}};
197	Double_t zBeamFine[7] = {1.45,1.3,1.15,1.3,1.15,1.3,1.45};
198
199	Int_t id=0;
200	//loop over TPC side -- 0:A (Shaft) side -- 1:C (Muon) side
201	for (Int_t side=0; side<2; side++){
202	//loop over laser rods -- counterclockwise
203	for (Int_t rod=0; rod<6; rod++){
204	//center of the rod
205	TVector2 vRod;
206
207	Double_t phiRod2 = phiRod[rod]-side*20;
208	vRod.SetMagPhi(254.25, //center of the rod at 254.25cm
209	TMath::DegToRad()*
210	(phiRod2) //-20 deg on C-Side
211	);
212
213	//loop over bundle -- counted from large z to small z
214	for (Int_t bundle=0; bundle<4; bundle++){
215	//center of the bundle; not yet rotated
216	Int_t bundleS = bundle;
217	// if ( side == 1 ) bundleS = 4-bundle;
218	if ( side == 1 ) bundleS = 3-bundle;
219
220	TVector2 vBundle;
221	vBundle.SetMagPhi(.65,
222	TMath::DegToRad()*
223	//? TMath::Power(-1,side)*
224	(phiRod2+180.-90.*bundleS)
225	);
226
227	//loop over beam
228	Int_t i=0;
229	for (Int_t beam=0; beam<7; beam++){
230	TVector2 vBeam;
231	if ( beam == 3 )
232	vBeam.Set(0.,0.);
233	else{
234	vBeam.SetMagPhi(1.,TMath::DegToRad()(phiRod2+i60));
235	i++;
236	}
237
238	TVector2 xyMirror = vRod+vBundle+vBeam;
239	Double_t zMirror = (zBundleCorse[rod%2][bundleS]+zBeamFine[beam])*TMath::Power(-1,side);
240	TVector3 v3Mirror(xyMirror.X(),xyMirror.Y(),zMirror);
241
242	Double_t phi = TMath::DegToRad()(phiRod2+180+phiBeam[beam]TMath::Power(-1,side));
243	Double_t theta = TMath::DegToRad()*90;
244
245	TVector3 v3Beam;
246	v3Beam.SetMagThetaPhi(1,theta,phi); //Direction Vector
247	v3Beam.SetMagThetaPhi(FindBeamLength(v3Mirror,v3Beam), theta, phi);
248
249
250
251	ltp->SetId(id);
252	ltp->SetSide(side);
253	ltp->SetRod(rod);
254	ltp->SetBundle(bundleS);
255	ltp->SetBeam(beam);
256
257	ltp->SetX(xyMirror.X());
258	ltp->SetY(xyMirror.Y());
259	ltp->SetZ(zMirror);
260
261	ltp->SetPhi(phi);
262	ltp->SetTheta(theta);
263
264	// ltp->InitPoints(2);
265	ltp->SetPoint(0,xyMirror.X(),xyMirror.Y(),zMirror);
266	ltp->SetPoint(1,xyMirror.X()+v3Beam.X(),xyMirror.Y()+v3Beam.Y(),zMirror+v3Beam.Z());
267
268	cout<< "Id: " << id
269	<< " Side: " << side
270	<< " Rod: " << rod
271	<< " Bundle: " << bundleS
272	<< " Beam: " << beam
273	<< endl;
274
275
276	t->Fill();
277	//delete line;
278	id++;
279	// cout << "Filled!!!" << endl;
280	}
281	}
282	}
283	}
284
285	t->Write();
286	delete f;
287	// delete t;
288	// delete ltp;
289	// delete line;
290	}
291
292	//_______________________________________________________________________
293	TPolyLine3D* AliTPCLaserTracks::GetLine()
294	{
295	if ( fNpoints ) return new TPolyLine3D(fNpoints,fXarr,fYarr,fZarr);
296
297	return 0x0;
298	}
299
300	//_______________________________________________________________________
301	TObjArray* AliTPCLaserTracks::GetLines(Char_t* file, Char_t *cuts)
302	{
303
304	TObjArray *array = new TObjArray;
305
306	TFile *f = TFile::Open(file,"read");
307	TTree tree = (TTree)f->Get("LaserTracks");
308
309	AliTPCLaserTracks *ltp = new AliTPCLaserTracks();
310	// TEventList *evList = new TEventList("evList");
311	TEventList evList("evList");
312
313	tree->SetBranchAddress("LaserTracks",&ltp);
314
315	tree->Draw(">>evList",cuts,"goff");
316
317	// cout << "N: " << evList.GetN() << endl;
318	gROOT->cd();
319	for (Int_t ev = 0; ev < evList.GetN(); ev++){
320	// cout << ev << endl;
321	tree->GetEntry( evList.GetEntry(ev) );
322	array->Add(ltp->GetLine());
323	}
324	// cout << "delte f"<< endl;
325	// delete f;
326
327	// cout << "evlist" << endl;
328
329	return array;
330	}
331
332	//_______________________________________________________________________
333	void AliTPCLaserTracks::InitPoints()
334	{
335	//
336	// Init point arrays
337	//
338
339	fMaxSize = fNpoints;
340	fXarr = new Double_t[fMaxSize];
341	fYarr = new Double_t[fMaxSize];
342	fZarr = new Double_t[fMaxSize];
343	}
344
345	//_______________________________________________________________________
346	Int_t AliTPCLaserTracks::SetPoint(Int_t point, Double_t x, Double_t y, Double_t z)
347	{
348	//
349	// Set point to point arrays
350	//
351
352	if ( !fXarr \|\| !fYarr \|\| !fZarr ) return 1;
353	if ( point > fNpoints-1 ) return 1;
354
355	fXarr[point] = x;
356	fYarr[point] = y;
357	fZarr[point] = z;
358	return 0;
359	}
360
361	//_______________________________________________________________________
362	Int_t AliTPCLaserTracks::FindMirror(Char_t *file, Double_t x, Double_t y, Double_t z, Double_t phi)
363	{
364	//
365	// return the id of the mirror in 'file' that maches best the given parameters
366	//
367
368	TFile *f = TFile::Open(file,"read");
369	TTree tree = (TTree)f->Get("LaserTracks");
370
371	AliTPCLaserTracks *ltp = new AliTPCLaserTracks();
372	TEventList evList("evList");
373
374	tree->SetBranchAddress("LaserTracks",&ltp);
375
376	TString s;
377	s = "abs(fX-"; s+= x;
378	s+= ")<3&&abs(fY-"; s+=y;
379	s+= ")<3&&abs(fZ-"; s+= z;
380	s+= ")<1.5";
381	// s+= "&&((abs(fPhi-";s+= phi;
382	// s+= ")<.06)\|\|(abs(fPhi-";s+= (phi-TMath::DegToRad()*180);
383	// s+= ")<.06))";
384	cout << s.Data() << endl;
385
386	tree->Draw(">>evList",s.Data());
387
388	Double_t dphiMin=TMath::Pi();
389	Int_t id=-1;
390
391	cout << "nev: " << evList.GetN() << endl;
392	for (Int_t i=0; i<evList.GetN(); i++){
393	tree->GetEntry( evList.GetEntry(i) );
394	Double_t dphi = TMath::Abs(ltp->GetPhi() - phi);
395	if ( dphi > TMath::DegToRad()180 ) dphi-=TMath::DegToRad()180;
396	if ( dphi<dphiMin ) {
397	dphiMin = dphi;
398	id = ltp->GetId();
399	}
400	}
401
402	return id;
403	delete f;
404	}
405
406	//_______________________________________________________________________
407	AliTPCLaserTracks::~AliTPCLaserTracks()
408	{
409	//
410	// standard destructor
411	//
412
413	// if ( fP ) delete fP;
414	if ( fXarr ) delete fXarr;
415	if ( fYarr ) delete fYarr;
416	if ( fZarr ) delete fZarr;
417	}