[u/mrichter/AliRoot.git] / PWG2 / FEMTOSCOPY / AliFemto / Analysis / AliFemtoLikeSignAnalysis.cxx

/***************************************************************************
 *
 * $Id$
 *
 * Author: Frank Laue, Ohio State, Laue@mps.ohio-state.edu
 ***************************************************************************
 *
 * Description: part of STAR HBT Framework: AliFemtoMaker package
 *      This is the Class for Analysis objects.  Each of the simultaneous
 *      Analyses running should have one of these instantiated.  They link
 *      into the Manager in an Analysis Collection.
 *
 ***************************************************************************/

#include "Analysis/AliFemtoLikeSignAnalysis.h"
#include "Infrastructure/AliFemtoParticleCollection.h"
#include "Base/AliFemtoTrackCut.h"
#include "Base/AliFemtoV0Cut.h"
#include "Infrastructure/AliFemtoPicoEventCollectionVector.h"
#include "Infrastructure/AliFemtoPicoEventCollectionVectorHideAway.h"

#ifdef __ROOT__ 
ClassImp(AliFemtoLikeSignAnalysis)
#endif

// this little function used to apply ParticleCuts (TrackCuts or V0Cuts) and fill ParticleCollections of picoEvent
//  it is called from AliFemtoAnalysis::ProcessEvent()


extern void FillHbtParticleCollection(AliFemtoParticleCut*         partCut,
				     AliFemtoEvent*               hbtEvent,
				     AliFemtoParticleCollection*  partCollection);

 
//____________________________
AliFemtoLikeSignAnalysis::AliFemtoLikeSignAnalysis(unsigned int bins, double min, double max) : AliFemtoAnalysis() {
  fVertexBins = bins;
  fVertexZ[0] = min;
  fVertexZ[1] = max;
  fUnderFlow = 0; 
  fOverFlow = 0; 
  if (fMixingBuffer) delete fMixingBuffer;
  fPicoEventCollectionVectorHideAway = new AliFemtoPicoEventCollectionVectorHideAway(fVertexBins,fVertexZ[0],fVertexZ[1]);
    /* no-op */
}
//____________________________
AliFemtoLikeSignAnalysis::AliFemtoLikeSignAnalysis(const AliFemtoLikeSignAnalysis& a) : AliFemtoAnalysis(a) {
  fVertexBins = a.fVertexBins; 
  fVertexZ[0] = a.fVertexZ[0]; 
  fVertexZ[1] = a.fVertexZ[1];
  fUnderFlow = 0; 
  fOverFlow = 0; 
  if (fMixingBuffer) delete fMixingBuffer;
  fPicoEventCollectionVectorHideAway = new AliFemtoPicoEventCollectionVectorHideAway(fVertexBins,fVertexZ[0],fVertexZ[1]);
 }
//____________________________ 
AliFemtoLikeSignAnalysis::~AliFemtoLikeSignAnalysis(){
  delete fPicoEventCollectionVectorHideAway; fPicoEventCollectionVectorHideAway=0;
}
//____________________________
AliFemtoString AliFemtoLikeSignAnalysis::Report()
{  
  char Ctemp[200];
  cout << "AliFemtoLikeSignAnalysis - constructing Report..."<<endl;
  AliFemtoString temp = "-----------\nHbt Analysis Report:\n";
  sprintf(Ctemp,"Events are mixed in %d bins in the range %E cm to %E cm.\n",fVertexBins,fVertexZ[0],fVertexZ[1]);
  temp += Ctemp;
  sprintf(Ctemp,"Events underflowing: %d\n",fUnderFlow);
  temp += Ctemp;
  sprintf(Ctemp,"Events overflowing: %d\n",fOverFlow);
  temp += Ctemp;
  sprintf(Ctemp,"Now adding AliFemtoAnalysis(base) Report\n");
  temp += Ctemp; 
  temp += "Adding AliFemtoAnalysis(base) Report now:\n";
  temp += AliFemtoAnalysis::Report();
  temp += "-------------\n";
  AliFemtoString returnThis=temp;
  return returnThis;
}
//_________________________
void AliFemtoLikeSignAnalysis::ProcessEvent(const AliFemtoEvent* hbtEvent) {
  // get right mixing buffer
  double vertexZ = hbtEvent->PrimVertPos().z();
  fMixingBuffer = fPicoEventCollectionVectorHideAway->PicoEventCollection(vertexZ); 
  if (!fMixingBuffer) {
    if ( vertexZ < fVertexZ[0] ) fUnderFlow++;
    if ( vertexZ > fVertexZ[1] ) fOverFlow++;
    return;
  }

  // startup for EbyE 
  EventBegin(hbtEvent);  
  // event cut and event cut monitor
  bool tmpPassEvent = fEventCut->Pass(hbtEvent);
  fEventCut->FillCutMonitor(hbtEvent, tmpPassEvent);
  if (tmpPassEvent) {
      fNeventsProcessed++;
      cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - " << hbtEvent->TrackCollection()->size();
      cout << " #track=" << hbtEvent->TrackCollection()->size();
      // OK, analysis likes the event-- build a pico event from it, using tracks the analysis likes...
      AliFemtoPicoEvent* picoEvent = new AliFemtoPicoEvent;       // this is what we will make pairs from and put in Mixing Buffer
      FillHbtParticleCollection(fFirstParticleCut,(AliFemtoEvent*)hbtEvent,picoEvent->FirstParticleCollection());
      if ( !(AnalyzeIdenticalParticles()) )
	FillHbtParticleCollection(fSecondParticleCut,(AliFemtoEvent*)hbtEvent,picoEvent->SecondParticleCollection());
      cout <<"   #particles in First, Second Collections: " <<
	picoEvent->FirstParticleCollection()->size() << " " <<
	picoEvent->SecondParticleCollection()->size() << endl;
      
      if (picoEvent->SecondParticleCollection()->size()*picoEvent->FirstParticleCollection()->size()==0) {
	delete picoEvent;
	cout << "AliFemtoLikeSignAnalysis - picoEvent deleted due to empty collection " <<endl; 
	return;
      }
      // OK, pico event is built
      // make real pairs...
      
      // Fabrice points out that we do not need to keep creating/deleting pairs all the time
      // We only ever need ONE pair, and we can just keep changing internal pointers
      // this should help speed things up
      AliFemtoPair* ThePair = new AliFemtoPair;
      
      AliFemtoParticleIterator PartIter1;
      AliFemtoParticleIterator PartIter2;
      AliFemtoCorrFctnIterator CorrFctnIter;
      AliFemtoParticleIterator StartOuterLoop = picoEvent->FirstParticleCollection()->begin();  // always
      AliFemtoParticleIterator EndOuterLoop   = picoEvent->FirstParticleCollection()->end();    // will be one less if identical
      AliFemtoParticleIterator StartInnerLoop;
      AliFemtoParticleIterator EndInnerLoop;
      if (AnalyzeIdenticalParticles()) {             // only use First collection
	EndOuterLoop--;                                               // outer loop goes to next-to-last particle in First collection
	EndInnerLoop = picoEvent->FirstParticleCollection()->end() ;  // inner loop goes to last particle in First collection
      }
      else {                                                          // nonidentical - loop over First and Second collections
	StartInnerLoop = picoEvent->SecondParticleCollection()->begin(); // inner loop starts at first particle in Second collection
	EndInnerLoop   = picoEvent->SecondParticleCollection()->end() ;  // inner loop goes to last particle in Second collection
      }
      // real pairs
      for (PartIter1=StartOuterLoop;PartIter1!=EndOuterLoop;PartIter1++){
	if (AnalyzeIdenticalParticles()){
	  StartInnerLoop = PartIter1;
	  StartInnerLoop++;
	}
	ThePair->SetTrack1(*PartIter1);
	for (PartIter2 = StartInnerLoop; PartIter2!=EndInnerLoop;PartIter2++){
	  ThePair->SetTrack2(*PartIter2);
	  // The following lines have to be uncommented if you want pairCutMonitors
	  // they are not in for speed reasons
	  // bool tmpPassPair = mPairCut->Pass(ThePair);
          // mPairCut->FillCutMonitor(ThePair, tmpPassPair);
	  // if ( tmpPassPair ) {
	  if (fPairCut->Pass(ThePair)){
	    for (CorrFctnIter=fCorrFctnCollection->begin();
		 CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
	      AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn*>(*CorrFctnIter);
	      if (CorrFctn) CorrFctn->AddRealPair(ThePair);
	    }
	  }  // if passed pair cut
	}    // loop over second particle
      }      // loop over first particle
#ifdef STHBTDEBUG
      cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - reals done" << endl;
#endif

      AliFemtoParticleIterator nextIter;
      AliFemtoParticleIterator prevIter;

      // like sign first partilce collection pairs
      prevIter = EndOuterLoop;
      prevIter--;
      for (PartIter1=StartOuterLoop;PartIter1!=prevIter;PartIter1++){
	ThePair->SetTrack1(*PartIter1);
	nextIter = PartIter1;
	nextIter++;
	for (PartIter2 = nextIter; PartIter2!=EndOuterLoop;PartIter2++){
	  ThePair->SetTrack2(*PartIter2);
	  // The following lines have to be uncommented if you want pairCutMonitors
	  // they are not in for speed reasons
	  // bool tmpPassPair = mPairCut->Pass(ThePair);
          // mPairCut->FillCutMonitor(ThePair, tmpPassPair);
	  // if ( tmpPassPair ) {
	  if (fPairCut->Pass(ThePair)){
	    for (CorrFctnIter=fCorrFctnCollection->begin();
		 CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
	      AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn*>(*CorrFctnIter);
	      if (CorrFctn) CorrFctn->AddLikeSignPositivePair(ThePair);
	    }
	  }  // if passed pair cut
	}    // loop over second particle
      }      // loop over first particle
#ifdef STHBTDEBUG
      cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - like sign first collection done" << endl;
#endif
      // like sign second partilce collection pairs
      prevIter = EndInnerLoop;
      prevIter--;
      for (PartIter1=StartInnerLoop;PartIter1!=prevIter;PartIter1++){
	ThePair->SetTrack1(*PartIter1);
	nextIter = PartIter1;
	nextIter++;
	for (PartIter2 = nextIter; PartIter2!=EndInnerLoop;PartIter2++){
	  ThePair->SetTrack2(*PartIter2);
	  // The following lines have to be uncommented if you want pairCutMonitors
	  // they are not in for speed reasons
	  // bool tmpPassPair = mPairCut->Pass(ThePair);
          // mPairCut->FillCutMonitor(ThePair, tmpPassPair);
	  // if ( tmpPassPair ) {
	  if (fPairCut->Pass(ThePair)){
	    for (CorrFctnIter=fCorrFctnCollection->begin();
		 CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
	      AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn*>(*CorrFctnIter);
	      if (CorrFctn) CorrFctn->AddLikeSignNegativePair(ThePair);
	    }
	  }  // if passed pair cut
	}    // loop over second particle
      }      // loop over first particle
#ifdef STHBTDEBUG
      cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - like sign second collection done" << endl;
#endif
      
      if (MixingBufferFull()){
#ifdef STHBTDEBUG
	cout << "Mixing Buffer is full - lets rock and roll" << endl;
#endif
      }
      else {
	cout << "Mixing Buffer not full -gotta wait " << MixingBuffer()->size() << endl;
      }
      if (MixingBufferFull()){
	StartOuterLoop = picoEvent->FirstParticleCollection()->begin();
	EndOuterLoop   = picoEvent->FirstParticleCollection()->end();
	AliFemtoPicoEvent* storedEvent;
	AliFemtoPicoEventIterator picoEventIter;
	for (picoEventIter=MixingBuffer()->begin();picoEventIter!=MixingBuffer()->end();picoEventIter++){
	  storedEvent = *picoEventIter;
	  if (AnalyzeIdenticalParticles()){
	    StartInnerLoop = storedEvent->FirstParticleCollection()->begin();
	    EndInnerLoop = storedEvent->FirstParticleCollection()->end();
	  }
	  else{
	    StartInnerLoop = storedEvent->SecondParticleCollection()->begin();
	    EndInnerLoop = storedEvent->SecondParticleCollection()->end();
	  }
	  for (PartIter1=StartOuterLoop;PartIter1!=EndOuterLoop;PartIter1++){
	    ThePair->SetTrack1(*PartIter1);
	    for (PartIter2=StartInnerLoop;PartIter2!=EndInnerLoop;PartIter2++){
	      ThePair->SetTrack2(*PartIter2);
	      // testing...	      cout << "ThePair defined... going to pair cut... ";
	      if (fPairCut->Pass(ThePair)){
		// testing...		cout << " ThePair passed PairCut... ";
		for (CorrFctnIter=fCorrFctnCollection->begin();
		     CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
		  AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn*>(*CorrFctnIter);
		  if (CorrFctn) { 
		    CorrFctn->AddMixedPair(ThePair);
		    //cout << " ThePair has been added to MixedPair method " << endl;
		  }
		}
	      }  // if passed pair cut
	    }    // loop over second particle
	  }      // loop over first particle
	}        // loop over pico-events stored in Mixing buffer
	// Now get rid of oldest stored pico-event in buffer.
	// This means (1) delete the event from memory, (2) "pop" the pointer to it from the MixingBuffer
	delete MixingBuffer()->back();
	MixingBuffer()->pop_back();
      }  // if mixing buffer is full
      delete ThePair;
      MixingBuffer()->push_front(picoEvent);  // store the current pico-event in buffer
    }   // if currentEvent is accepted by currentAnalysis
    EventEnd(hbtEvent);  // cleanup for EbyE 
    //    cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - return to caller ... " << endl;
}
Commit	Line	Data
67427ff7	1	/***************************************************************************
	2	*
	3	* $Id$
	4	*
	5	* Author: Frank Laue, Ohio State, Laue@mps.ohio-state.edu
	6	***************************************************************************
	7	*
	8	* Description: part of STAR HBT Framework: AliFemtoMaker package
	9	* This is the Class for Analysis objects. Each of the simultaneous
	10	* Analyses running should have one of these instantiated. They link
	11	* into the Manager in an Analysis Collection.
	12	*
	13	***************************************************************************/
	14
	15	#include "Analysis/AliFemtoLikeSignAnalysis.h"
	16	#include "Infrastructure/AliFemtoParticleCollection.h"
	17	#include "Base/AliFemtoTrackCut.h"
	18	#include "Base/AliFemtoV0Cut.h"
	19	#include "Infrastructure/AliFemtoPicoEventCollectionVector.h"
	20	#include "Infrastructure/AliFemtoPicoEventCollectionVectorHideAway.h"
	21
	22	#ifdef __ROOT__
	23	ClassImp(AliFemtoLikeSignAnalysis)
	24	#endif
	25
	26	// this little function used to apply ParticleCuts (TrackCuts or V0Cuts) and fill ParticleCollections of picoEvent
	27	// it is called from AliFemtoAnalysis::ProcessEvent()
	28
	29
	30	extern void FillHbtParticleCollection(AliFemtoParticleCut* partCut,
	31	AliFemtoEvent* hbtEvent,
	32	AliFemtoParticleCollection* partCollection);
	33
	34
	35	//____________________________
	36	AliFemtoLikeSignAnalysis::AliFemtoLikeSignAnalysis(unsigned int bins, double min, double max) : AliFemtoAnalysis() {
	37	fVertexBins = bins;
	38	fVertexZ[0] = min;
	39	fVertexZ[1] = max;
	40	fUnderFlow = 0;
	41	fOverFlow = 0;
	42	if (fMixingBuffer) delete fMixingBuffer;
	43	fPicoEventCollectionVectorHideAway = new AliFemtoPicoEventCollectionVectorHideAway(fVertexBins,fVertexZ[0],fVertexZ[1]);
	44	/* no-op */
	45	}
	46	//____________________________
	47	AliFemtoLikeSignAnalysis::AliFemtoLikeSignAnalysis(const AliFemtoLikeSignAnalysis& a) : AliFemtoAnalysis(a) {
	48	fVertexBins = a.fVertexBins;
	49	fVertexZ[0] = a.fVertexZ[0];
	50	fVertexZ[1] = a.fVertexZ[1];
	51	fUnderFlow = 0;
	52	fOverFlow = 0;
	53	if (fMixingBuffer) delete fMixingBuffer;
	54	fPicoEventCollectionVectorHideAway = new AliFemtoPicoEventCollectionVectorHideAway(fVertexBins,fVertexZ[0],fVertexZ[1]);
	55	}
	56	//____________________________
	57	AliFemtoLikeSignAnalysis::~AliFemtoLikeSignAnalysis(){
	58	delete fPicoEventCollectionVectorHideAway; fPicoEventCollectionVectorHideAway=0;
	59	}
	60	//____________________________
	61	AliFemtoString AliFemtoLikeSignAnalysis::Report()
	62	{
	63	char Ctemp[200];
	64	cout << "AliFemtoLikeSignAnalysis - constructing Report..."<<endl;
65	AliFemtoString temp = "-----------\nHbt Analysis Report:\n";
66	sprintf(Ctemp,"Events are mixed in %d bins in the range %E cm to %E cm.\n",fVertexBins,fVertexZ[0],fVertexZ[1]);
67	temp += Ctemp;
68	sprintf(Ctemp,"Events underflowing: %d\n",fUnderFlow);
69	temp += Ctemp;
70	sprintf(Ctemp,"Events overflowing: %d\n",fOverFlow);
71	temp += Ctemp;
72	sprintf(Ctemp,"Now adding AliFemtoAnalysis(base) Report\n");
73	temp += Ctemp;
74	temp += "Adding AliFemtoAnalysis(base) Report now:\n";
75	temp += AliFemtoAnalysis::Report();
76	temp += "-------------\n";
77	AliFemtoString returnThis=temp;
78	return returnThis;
79	}
80	//_________________________
81	void AliFemtoLikeSignAnalysis::ProcessEvent(const AliFemtoEvent* hbtEvent) {
82	// get right mixing buffer
83	double vertexZ = hbtEvent->PrimVertPos().z();
84	fMixingBuffer = fPicoEventCollectionVectorHideAway->PicoEventCollection(vertexZ);
85	if (!fMixingBuffer) {
86	if ( vertexZ < fVertexZ[0] ) fUnderFlow++;
87	if ( vertexZ > fVertexZ[1] ) fOverFlow++;
88	return;
89	}
90
91	// startup for EbyE
92	EventBegin(hbtEvent);
93	// event cut and event cut monitor
94	bool tmpPassEvent = fEventCut->Pass(hbtEvent);
95	fEventCut->FillCutMonitor(hbtEvent, tmpPassEvent);
96	if (tmpPassEvent) {
97	fNeventsProcessed++;
98	cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - " << hbtEvent->TrackCollection()->size();
99	cout << " #track=" << hbtEvent->TrackCollection()->size();
100	// OK, analysis likes the event-- build a pico event from it, using tracks the analysis likes...
101	AliFemtoPicoEvent* picoEvent = new AliFemtoPicoEvent; // this is what we will make pairs from and put in Mixing Buffer
102	FillHbtParticleCollection(fFirstParticleCut,(AliFemtoEvent*)hbtEvent,picoEvent->FirstParticleCollection());
103	if ( !(AnalyzeIdenticalParticles()) )
104	FillHbtParticleCollection(fSecondParticleCut,(AliFemtoEvent*)hbtEvent,picoEvent->SecondParticleCollection());
105	cout <<" #particles in First, Second Collections: " <<
106	picoEvent->FirstParticleCollection()->size() << " " <<
107	picoEvent->SecondParticleCollection()->size() << endl;
108
109	if (picoEvent->SecondParticleCollection()->size()*picoEvent->FirstParticleCollection()->size()==0) {
110	delete picoEvent;
111	cout << "AliFemtoLikeSignAnalysis - picoEvent deleted due to empty collection " <<endl;
112	return;
113	}
114	// OK, pico event is built
115	// make real pairs...
116
117	// Fabrice points out that we do not need to keep creating/deleting pairs all the time
118	// We only ever need ONE pair, and we can just keep changing internal pointers
119	// this should help speed things up
120	AliFemtoPair* ThePair = new AliFemtoPair;
121
122	AliFemtoParticleIterator PartIter1;
123	AliFemtoParticleIterator PartIter2;
124	AliFemtoCorrFctnIterator CorrFctnIter;
125	AliFemtoParticleIterator StartOuterLoop = picoEvent->FirstParticleCollection()->begin(); // always
126	AliFemtoParticleIterator EndOuterLoop = picoEvent->FirstParticleCollection()->end(); // will be one less if identical
127	AliFemtoParticleIterator StartInnerLoop;
128	AliFemtoParticleIterator EndInnerLoop;
129	if (AnalyzeIdenticalParticles()) { // only use First collection
130	EndOuterLoop--; // outer loop goes to next-to-last particle in First collection
131	EndInnerLoop = picoEvent->FirstParticleCollection()->end() ; // inner loop goes to last particle in First collection
132	}
133	else { // nonidentical - loop over First and Second collections
134	StartInnerLoop = picoEvent->SecondParticleCollection()->begin(); // inner loop starts at first particle in Second collection
135	EndInnerLoop = picoEvent->SecondParticleCollection()->end() ; // inner loop goes to last particle in Second collection
136	}
137	// real pairs
138	for (PartIter1=StartOuterLoop;PartIter1!=EndOuterLoop;PartIter1++){
139	if (AnalyzeIdenticalParticles()){
140	StartInnerLoop = PartIter1;
141	StartInnerLoop++;
142	}
143	ThePair->SetTrack1(*PartIter1);
144	for (PartIter2 = StartInnerLoop; PartIter2!=EndInnerLoop;PartIter2++){
145	ThePair->SetTrack2(*PartIter2);
146	// The following lines have to be uncommented if you want pairCutMonitors
147	// they are not in for speed reasons
148	// bool tmpPassPair = mPairCut->Pass(ThePair);
149	// mPairCut->FillCutMonitor(ThePair, tmpPassPair);
150	// if ( tmpPassPair ) {
151	if (fPairCut->Pass(ThePair)){
152	for (CorrFctnIter=fCorrFctnCollection->begin();
153	CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
154	AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn>(CorrFctnIter);
155	if (CorrFctn) CorrFctn->AddRealPair(ThePair);
156	}
157	} // if passed pair cut
158	} // loop over second particle
159	} // loop over first particle
160	#ifdef STHBTDEBUG
161	cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - reals done" << endl;
162	#endif
163
164	AliFemtoParticleIterator nextIter;
165	AliFemtoParticleIterator prevIter;
166
167	// like sign first partilce collection pairs
168	prevIter = EndOuterLoop;
169	prevIter--;
170	for (PartIter1=StartOuterLoop;PartIter1!=prevIter;PartIter1++){
171	ThePair->SetTrack1(*PartIter1);
172	nextIter = PartIter1;
173	nextIter++;
174	for (PartIter2 = nextIter; PartIter2!=EndOuterLoop;PartIter2++){
175	ThePair->SetTrack2(*PartIter2);
176	// The following lines have to be uncommented if you want pairCutMonitors
177	// they are not in for speed reasons
178	// bool tmpPassPair = mPairCut->Pass(ThePair);
179	// mPairCut->FillCutMonitor(ThePair, tmpPassPair);
180	// if ( tmpPassPair ) {
181	if (fPairCut->Pass(ThePair)){
182	for (CorrFctnIter=fCorrFctnCollection->begin();
183	CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
184	AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn>(CorrFctnIter);
185	if (CorrFctn) CorrFctn->AddLikeSignPositivePair(ThePair);
186	}
187	} // if passed pair cut
188	} // loop over second particle
189	} // loop over first particle
190	#ifdef STHBTDEBUG
191	cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - like sign first collection done" << endl;
192	#endif
193	// like sign second partilce collection pairs
194	prevIter = EndInnerLoop;
195	prevIter--;
196	for (PartIter1=StartInnerLoop;PartIter1!=prevIter;PartIter1++){
197	ThePair->SetTrack1(*PartIter1);
198	nextIter = PartIter1;
199	nextIter++;
200	for (PartIter2 = nextIter; PartIter2!=EndInnerLoop;PartIter2++){
201	ThePair->SetTrack2(*PartIter2);
202	// The following lines have to be uncommented if you want pairCutMonitors
203	// they are not in for speed reasons
204	// bool tmpPassPair = mPairCut->Pass(ThePair);
205	// mPairCut->FillCutMonitor(ThePair, tmpPassPair);
206	// if ( tmpPassPair ) {
207	if (fPairCut->Pass(ThePair)){
208	for (CorrFctnIter=fCorrFctnCollection->begin();
209	CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
210	AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn>(CorrFctnIter);
211	if (CorrFctn) CorrFctn->AddLikeSignNegativePair(ThePair);
212	}
213	} // if passed pair cut
214	} // loop over second particle
215	} // loop over first particle
216	#ifdef STHBTDEBUG
217	cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - like sign second collection done" << endl;
218	#endif
219
220	if (MixingBufferFull()){
221	#ifdef STHBTDEBUG
222	cout << "Mixing Buffer is full - lets rock and roll" << endl;
223	#endif
224	}
225	else {
226	cout << "Mixing Buffer not full -gotta wait " << MixingBuffer()->size() << endl;
227	}
228	if (MixingBufferFull()){
229	StartOuterLoop = picoEvent->FirstParticleCollection()->begin();
230	EndOuterLoop = picoEvent->FirstParticleCollection()->end();
231	AliFemtoPicoEvent* storedEvent;
232	AliFemtoPicoEventIterator picoEventIter;
233	for (picoEventIter=MixingBuffer()->begin();picoEventIter!=MixingBuffer()->end();picoEventIter++){
234	storedEvent = *picoEventIter;
235	if (AnalyzeIdenticalParticles()){
236	StartInnerLoop = storedEvent->FirstParticleCollection()->begin();
237	EndInnerLoop = storedEvent->FirstParticleCollection()->end();
238	}
239	else{
240	StartInnerLoop = storedEvent->SecondParticleCollection()->begin();
241	EndInnerLoop = storedEvent->SecondParticleCollection()->end();
242	}
243	for (PartIter1=StartOuterLoop;PartIter1!=EndOuterLoop;PartIter1++){
244	ThePair->SetTrack1(*PartIter1);
245	for (PartIter2=StartInnerLoop;PartIter2!=EndInnerLoop;PartIter2++){
246	ThePair->SetTrack2(*PartIter2);
247	// testing... cout << "ThePair defined... going to pair cut... ";
248	if (fPairCut->Pass(ThePair)){
249	// testing... cout << " ThePair passed PairCut... ";
250	for (CorrFctnIter=fCorrFctnCollection->begin();
251	CorrFctnIter!=fCorrFctnCollection->end();CorrFctnIter++){
252	AliFemtoLikeSignCorrFctn* CorrFctn = dynamic_cast<AliFemtoLikeSignCorrFctn>(CorrFctnIter);
253	if (CorrFctn) {
254	CorrFctn->AddMixedPair(ThePair);
255	//cout << " ThePair has been added to MixedPair method " << endl;
256	}
257	}
258	} // if passed pair cut
259	} // loop over second particle
260	} // loop over first particle
261	} // loop over pico-events stored in Mixing buffer
262	// Now get rid of oldest stored pico-event in buffer.
263	// This means (1) delete the event from memory, (2) "pop" the pointer to it from the MixingBuffer
264	delete MixingBuffer()->back();
265	MixingBuffer()->pop_back();
266	} // if mixing buffer is full
267	delete ThePair;
268	MixingBuffer()->push_front(picoEvent); // store the current pico-event in buffer
269	} // if currentEvent is accepted by currentAnalysis
270	EventEnd(hbtEvent); // cleanup for EbyE
271	// cout << "AliFemtoLikeSignAnalysis::ProcessEvent() - return to caller ... " << endl;
272	}
273
274
275