[u/mrichter/AliRoot.git] / MUON / AliMUONpoints.h.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.                  *
 **************************************************************************/

/*
$Log$
*/

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  This class contains the points for the ALICE event display               //
//                                                                           //
//Begin_Html
/*
<img src="gif/AliMUONpointsClass.gif">
*/
//End_Html
//                                                                           //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include "AliMUONpoints.h"
#include "AliMUONdisplay.h"
#include "AliRun.h"
#include "TPad.h"
#include "TVirtualPad.h"
#include "TPolyLine3D.h"
#include "TPaveText.h"
#include "TView.h"
#include "TMath.h"

//const Int_t MAX_Nipx=1026, MAX_Nipy=1026;
const Int_t MAX_Nipx=400, MAX_Nipy=800;
 
ClassImp(AliMUONpoints)

//_____________________________________________________________________________
AliMUONpoints::AliMUONpoints()
{
  //
  // Default constructor
  //
  fHitIndex = 0;
  fTrackIndex = 0;
  fDigitIndex = 0;
  fMarker[0] = fMarker[1] = fMarker[2]=0;
  fMatrix = 0;
}

//_____________________________________________________________________________
AliMUONpoints::AliMUONpoints(Int_t npoints)
  :AliPoints(npoints)
{
  //
  // Standard constructor
  //
  fHitIndex = 0;
  fTrackIndex = 0;
  fDigitIndex = 0;
  fMarker[0] = fMarker[1] = fMarker[2]=0;
  fMatrix = 0;
}
	 
//_____________________________________________________________________________
AliMUONpoints::~AliMUONpoints()
{
  //
  // Default destructor
  //
  fHitIndex = 0;
  fTrackIndex = 0;
  fDigitIndex = 0;
  for (Int_t i=0;i<3;i++){
      if (
fMarker[i]) delete fMarker[i];
  }
  fMatrix = 0;
}

//_____________________________________________________________________________
//void AliMUONpoints::ExecuteEvent(Int_t event, Int_t px, Int_t py)
//{
  //
  //*-*-*-*-*-*-*-*-*-*Execute action corresponding to one event*-*-*-*-*-*-*-*
  //*-*                =========================================
  //*-*
  //*-*  This member function must be implemented to realize the action
  //*-*  corresponding to the mouse click on the object in the window
  //*-*
  //*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
//  gPad->SetCursor(kCross);
  
//}
//_____________________________________________________________________________
void AliMUONpoints::DumpHit()
{
  //
  //   Dump hit corresponding to this point
  //
  AliMUONhit *hit = GetHit();
  if (hit) hit->Dump();
  printf("fTrackIndex %d \n",fTrackIndex);
}

//_____________________________________________________________________________
void AliMUONpoints::DumpDigit()
{
  //
  //   Dump digit corresponding to this point
  //
  AliMUONdigit *digit = GetDigit();
  if (digit) digit->Dump();
  for (int i=0;i<10;i++) {
        printf(" track charge %d %d \n",digit->fTracks[i],digit->fTcharges[i]);
  }

}

//_____________________________________________________________________________
void AliMUONpoints::InspectHit()
{
  //
  //   Inspect hit corresponding to this point
  //

  if (fHitIndex < 0 ) return;
  TVirtualPad *padsav = gPad;
  AliMUONhit *hit = GetHit();
  if (hit) hit->Inspect();
  TVirtualPad *padinspect = (TVirtualPad*)(gROOT->GetListOfCanvases())->FindObject("inspect");
   padinspect->cd();
   Float_t xmin = gPad->GetX1();
   Float_t xmax = gPad->GetX2();
   Float_t ymin = gPad->GetY1();
   Float_t ymax = gPad->GetY2();
   Float_t dy   = ymax-ymin;

      TPaveText *pad = new TPaveText(xmin, ymin+0.1*dy, xmax, ymin+0.15*dy);
      pad->SetBit(kCanDelete);
      pad->SetFillColor(42);
      pad->Draw();
      char ptitle[100];
      sprintf(ptitle," %s , fTrack: %d  fTrackIndex: %d ",GetName(),fIndex,fTrackIndex);
      pad->AddText(ptitle);
      padinspect->cd();
      padinspect->Update();
  if (padsav) padsav->cd();

}

//_____________________________________________________________________________
void AliMUONpoints::InspectDigit()
{
  //
  //   Inspect digit corresponding to this point
  //
  if (fDigitIndex < 0) return;
  TVirtualPad *padsav = gPad;
  AliMUONdigit *digit = GetDigit();
  if (digit) digit->Inspect();
  TVirtualPad *padinspect = (TVirtualPad*)(gROOT->GetListOfCanvases())->FindObject("inspect");
   padinspect->cd();
   Float_t xmin = gPad->GetX1();
   Float_t xmax = gPad->GetX2();
   Float_t ymin = gPad->GetY1();
   Float_t ymax = gPad->GetY2();
   Float_t dy   = ymax-ymin;

      TPaveText *pad = new TPaveText(xmin, ymin+0.1*dy, xmax, ymin+0.25*dy);
      pad->SetBit(kCanDelete);
      pad->SetFillColor(42);
      pad->Draw();
      char ptitle[11][100];
      //      sprintf(ptitle[11],"Tracks making this digit");
      //      pad->AddText(ptitle[11]);
  for (int i=0;i<10;i++) {
      if (digit->fTracks[i] == 0) continue;  
      sprintf(ptitle[i],"fTrackIndex: %d  Charge: %d",digit->fTracks[i],digit->fTcharges[i]);
      pad->AddText(ptitle[i]);
  }
      padinspect->cd();
      padinspect->Update();
  if (padsav) padsav->cd();
      
}

//_____________________________________________________________________________
Int_t AliMUONpoints::GetTrackIndex()
{
  //
  //   Dump digit corresponding to this point
  //
  printf("GetTrackIndex - fTrackIndex %d \n",fTrackIndex);
  this->Inspect();
  /*
  if (fDigitIndex != 0) {
    Int_t ncol=this->fMatrix->GetNcols();
    for (int i=0;i<ncol;i++) {
        printf(" track charge %f %f \n",(*(this->fMatrix))(0,i),(*(this->fMatrix))(1,i));
    }
  }
  */
  return fTrackIndex;
}

//_____________________________________________________________________________
AliMUONhit *AliMUONpoints::GetHit() const
{
  //
  //   Returns pointer to hit index in AliRun::fParticles
  //
  AliMUON *MUON  = (AliMUON*)gAlice->GetModule("MUON");
  gAlice->TreeH()->GetEvent(fTrackIndex);
  TClonesArray *MUONhits  = MUON->Hits();
  Int_t nhits = MUONhits->GetEntriesFast();
  if (fHitIndex < 0 || fHitIndex >= nhits) return 0;
  return (AliMUONhit*)MUONhits->UncheckedAt(fHitIndex);
}

//_____________________________________________________________________________
AliMUONdigit *AliMUONpoints::GetDigit() const
{
  //
  //   Returns pointer to digit index in AliRun::fParticles
  //

  AliMUONdisplay *display=(AliMUONdisplay*)gAlice->Display();
  Int_t chamber=display->GetChamber();
  Int_t cathode=display->GetCathode();
   
  AliMUON *MUON  = (AliMUON*)gAlice->GetModule("MUON");
  TClonesArray *MUONdigits  = MUON->DigitsAddress(chamber-1);
  gAlice->TreeD()->GetEvent(cathode);
  Int_t ndigits = MUONdigits->GetEntriesFast();
  if (fDigitIndex < 0 || fDigitIndex >= ndigits) return 0;
  return (AliMUONdigit*)MUONdigits->UncheckedAt(fDigitIndex);
}
//_____________________________________________________________________________
struct Bin {
   const AliMUONdigit *dig;
   int idx;
   Bin() {dig=0; idx=-1;}
};

struct PreCluster : public AliMUONreccluster {
   const AliMUONdigit* summit;
   int idx;
   int cut;
   int npeaks;
   int npoly;
   float xpoly[100];
   float ypoly[100];
   float zpoly[100];
   PreCluster() : AliMUONreccluster() {cut=npeaks=npoly=0; 
                                       for (int k=0;k<100;k++) {
                                         xpoly[k]=ypoly[k]=zpoly[k]=0;
				       }
   }
                              
};
//_____________________________________________________________________________

static void FindCluster(AliMUONchamber *iChamber, AliMUONsegmentation *segmentation, int i, int j, Bin bins[][MAX_Nipy], PreCluster &c) 

{

  //
  // Find clusters
  //

  printf("I'm in FindCluster \n"); 

  Bin& b=bins[i][j];
  Int_t q=b.dig->fSignal;

  printf("FindCluster - i j q %d %d %d\n",i,j,q);
  
  if (q<0) { 
    q=-q;
    c.cut=1;
  } 
  //  if (b.idx >= 0 && b.idx != c.idx) {
  if (b.idx >= 0 && b.idx > c.idx) {
    c.idx=b.idx;
    c.npeaks++;
    printf("FindCluster - one more peak \n");
  }
  
  if (q > TMath::Abs(c.summit->fSignal)) c.summit=b.dig;

  Float_t zpos=iChamber->ZPosition();  // check with Andreas

  Int_t npx  = segmentation->Npx();
  Int_t npy  = segmentation->Npy();

  // get pad coordinates and prepare the up and down steps   
  Int_t jup  =(j-npy > 0) ? j+1 : (j-npy-1)+npy;
  Int_t jdown=(j-npy > 0) ? j-1 : (j-npy+1)+npy;
  //  Int_t jup  =j+1;
  //  Int_t jdown=j-1;
  Float_t x, y;
  segmentation->GetPadCxy(i-npx, j-npy,x, y);
  Int_t isec0=segmentation->Sector(i-npx,j-npy);
  printf("FindCluster - i-npx j-npy isec0 %d %d %d \n",i-npx,j-npy,isec0);
  //  printf("FindCluster - x  y %f %f \n",x,y);

  Float_t dpy  = segmentation->Dpy();
  Float_t dpx  = segmentation->Dpx()/16;
  Int_t ixx, iyy;
  Float_t absx=TMath::Abs(x);
  // iup
  (y >0) ? segmentation->GetPadIxy(absx+dpx,y+dpy,ixx,iyy) : segmentation->GetPadIxy(absx+dpx,y-dpy,ixx,iyy);
  printf(" iup: ixx iyy %d %d \n",ixx,iyy);
  Int_t jtest=TMath::Abs(iyy)-npy-1;
  if (j != jtest) {
     printf(" j != jtest - something's wrong %d %d \n",j,jtest);
  }
  Int_t iup=(x >0) ? ixx+npx : -ixx+npx;
  // idown
  (y >0) ? segmentation->GetPadIxy(absx+dpx,y-dpy,ixx,iyy) : segmentation->GetPadIxy(absx+dpx,y+dpy,ixx,iyy);
  printf(" idown: ixx iyy %d %d \n",ixx,iyy);
  Int_t idown=(x >0) ? ixx+npx : -ixx+npx;
  if (bins[idown][jdown].dig == 0) {
     (y >0) ? segmentation->GetPadIxy(absx-dpx,y-dpy,ixx,iyy) : segmentation->GetPadIxy(absx-dpx,y+dpy,ixx,iyy);
     printf(" idown: ixx iyy %d %d \n",ixx,iyy);
     idown=(x >0) ? ixx+npx : -ixx+npx;
  }
 
  printf("i, iup, idown, j, jup, jdown %d %d %d %d %d %d \n",i,iup,idown,j,jup,jdown);

  // calculate center of gravity
  c.npoly++;
  if (c.npoly > 100 ) {
    printf("FindCluster - npoly >100,  npoly %d \n",c.npoly);
    c.npoly=100;
  }
  c.xpoly[c.npoly-1]=x;
  c.ypoly[c.npoly-1]=y;
  c.zpoly[c.npoly-1]=zpos;

  c.fX += q*x;
  c.fY += q*y;
  c.fQ += q;
  
  b.dig = 0;  b.idx = c.idx;

  // left and right  
  if (bins[i-1][j].dig) FindCluster(iChamber,segmentation,i-1,j,bins,c);
  if (bins[i+1][j].dig) FindCluster(iChamber,segmentation,i+1,j,bins,c);
  // up and down
  if (bins[iup][jup].dig) FindCluster(iChamber,segmentation,iup,jup,bins,c);
  if (bins[idown][jdown].dig) FindCluster(iChamber,segmentation,idown,jdown,bins,c);

}

//_____________________________________________________________________________

void AliMUONpoints::GetCenterOfGravity()
{
  //
  // simple MUON cluster finder from digits -- finds neighbours and 
  // calculates center of gravity for the cluster
  //

  //  const Int_t MAX_Nipx=1026, MAX_Nipy=1026;

  Bin bins[MAX_Nipx][MAX_Nipy]; 

  AliMUONdisplay *display=(AliMUONdisplay*)gAlice->Display();
  Int_t chamber=display->GetChamber();
  Int_t cathode=display->GetCathode();
   
  AliMUON *MUON  = (AliMUON*)gAlice->GetModule("MUON");
  AliMUONchamber *iChamber;
  AliMUONsegmentation *segmentation;
  iChamber =&(MUON->Chamber(chamber-1));
  segmentation=iChamber->GetSegmentationModel(cathode);
  Int_t npx  = segmentation->Npx();
  Int_t npy  = segmentation->Npy();
  Float_t zpos=iChamber->ZPosition();

  TClonesArray *MUONdigits  = MUON->DigitsAddress(chamber-1);
  gAlice->TreeD()->GetEvent(cathode);
  Int_t ndigits = MUONdigits->GetEntriesFast();
  if (fDigitIndex < 0 || fDigitIndex >= ndigits) return;

  AliMUONdigit  *dig;
  dig=(AliMUONdigit*)MUONdigits->UncheckedAt(fDigitIndex);
  Int_t ipx=dig->fPadX;
  Int_t ipy=dig->fPadY;
  bins[ipx+npx][ipy+npy].dig=dig;
    
  int ndig;
  int ncls=0;
  for (ndig=0;ndig<ndigits;ndig++) {
    dig = (AliMUONdigit*)MUONdigits->UncheckedAt(ndig);
    int i=dig->fPadX, j=dig->fPadY;
    bins[i+npx][j+npy].dig=dig;
  }
   PreCluster c; c.summit=bins[ipx+npx][ipy+npy].dig; c.idx=ncls;
   FindCluster(iChamber,segmentation,ipx+npx, ipy+npy, bins, c);
   printf("GetCenterOfGravity -- npoly %d \n",c.npoly);
    
   if (c.npeaks>1) {
      printf("GetCenterOfGravity -- more than one peak");
   }
   c.fX /= c.fQ;
   c.fY /= c.fQ;
   printf("GetCenterOfGravity - c.fX c.fY c.fQ c.npeaks%f %f %d %d \n",c.fX,c.fY,c.fQ,c.npeaks);
   /*
   c.fTracks[0]=(Int_t)(*(c.summit->fTrks))(0);
   c.fTracks[1]=(Int_t)(*(c.summit->fTrks))(1);
   c.fTracks[2]=(Int_t)(*(c.summit->fTrks))(2);
   */
   c.fTracks[0]=c.summit->fTracks[0];
   c.fTracks[1]=c.summit->fTracks[1];
   c.fTracks[2]=c.summit->fTracks[2];
   ncls++;
   AliMUONpoints *points = 0;
   points = new AliMUONpoints(1);
   points->SetMarkerColor(kYellow);
   points->SetMarkerStyle(5);
   points->SetMarkerSize(1.);
   points->SetPoint(0,c.fX,c.fY,zpos);
   points->SetParticle(-1);
   points->Draw();

   TPolyLine3D *pline=0;
   /*
   pline=new TPolyLine3D(c.npoly);
   Int_t np=c.npoly;
   Float_t *x=new Float_t(c.npoly);
   Float_t *y=new Float_t(c.npoly);
   Float_t *z=new Float_t(c.npoly);
   for (int i=0;i<np;i++) {
     x[i]=c.xpoly[i];
     y[i]=c.ypoly[i];
     x[i]=c.zpoly[i];
     pline->SetPoint(i,x[i],y[i],z[i]);
   }
   */
   pline=new TPolyLine3D(c.npoly,c.xpoly,c.ypoly,c.zpoly);
   pline->SetLineColor(kWhite);
   pline->Draw();
  

   printf("GetCenterOfGravity -- ncls %d \n",ncls);

}
Commit	Line	Data
4c039060	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	$Log$
	18	*/
	19
a897a37a	20	///////////////////////////////////////////////////////////////////////////////
	21	// //
	22	// This class contains the points for the ALICE event display //
	23	// //
	24	//Begin_Html
	25	/*
	26	<img src="gif/AliMUONpointsClass.gif">
	27	*/
	28	//End_Html
	29	// //
	30	// //
	31	///////////////////////////////////////////////////////////////////////////////
	32
	33	#include "AliMUONpoints.h"
	34	#include "AliMUONdisplay.h"
	35	#include "AliRun.h"
	36	#include "TPad.h"
	37	#include "TVirtualPad.h"
	38	#include "TPolyLine3D.h"
	39	#include "TPaveText.h"
	40	#include "TView.h"
	41	#include "TMath.h"
	42
	43	//const Int_t MAX_Nipx=1026, MAX_Nipy=1026;
	44	const Int_t MAX_Nipx=400, MAX_Nipy=800;
	45
	46	ClassImp(AliMUONpoints)
	47
	48	//_____________________________________________________________________________
	49	AliMUONpoints::AliMUONpoints()
	50	{
	51	//
	52	// Default constructor
	53	//
	54	fHitIndex = 0;
	55	fTrackIndex = 0;
	56	fDigitIndex = 0;
	57	fMarker[0] = fMarker[1] = fMarker[2]=0;
	58	fMatrix = 0;
	59	}
	60
	61	//_____________________________________________________________________________
	62	AliMUONpoints::AliMUONpoints(Int_t npoints)
	63	:AliPoints(npoints)
	64	{
	65	//
	66	// Standard constructor
	67	//
	68	fHitIndex = 0;
	69	fTrackIndex = 0;
	70	fDigitIndex = 0;
	71	fMarker[0] = fMarker[1] = fMarker[2]=0;
	72	fMatrix = 0;
	73	}
	74
	75	//_____________________________________________________________________________
	76	AliMUONpoints::~AliMUONpoints()
	77	{
	78	//
	79	// Default destructor
	80	//
	81	fHitIndex = 0;
	82	fTrackIndex = 0;
	83	fDigitIndex = 0;
84	for (Int_t i=0;i<3;i++){
85	if (
86	fMarker[i]) delete fMarker[i];
87	}
88	fMatrix = 0;
89	}
90
91	//_____________________________________________________________________________
92	//void AliMUONpoints::ExecuteEvent(Int_t event, Int_t px, Int_t py)
93	//{
94	//
95	//---------Execute action corresponding to one event-------
96	//- =========================================
97	//-
98	//- This member function must be implemented to realize the action
99	//- corresponding to the mouse click on the object in the window
100	//-
101	//-------------------------------------
102	// gPad->SetCursor(kCross);
103
104	//}
105	//_____________________________________________________________________________
106	void AliMUONpoints::DumpHit()
107	{
108	//
109	// Dump hit corresponding to this point
110	//
111	AliMUONhit *hit = GetHit();
112	if (hit) hit->Dump();
113	printf("fTrackIndex %d \n",fTrackIndex);
114	}
115
116	//_____________________________________________________________________________
117	void AliMUONpoints::DumpDigit()
118	{
119	//
120	// Dump digit corresponding to this point
121	//
122	AliMUONdigit *digit = GetDigit();
123	if (digit) digit->Dump();
124	for (int i=0;i<10;i++) {
125	printf(" track charge %d %d \n",digit->fTracks[i],digit->fTcharges[i]);
126	}
127
128	}
129
130	//_____________________________________________________________________________
131	void AliMUONpoints::InspectHit()
132	{
133	//
134	// Inspect hit corresponding to this point
135	//
136
137	if (fHitIndex < 0 ) return;
138	TVirtualPad *padsav = gPad;
139	AliMUONhit *hit = GetHit();
140	if (hit) hit->Inspect();
141	TVirtualPad padinspect = (TVirtualPad)(gROOT->GetListOfCanvases())->FindObject("inspect");
142	padinspect->cd();
143	Float_t xmin = gPad->GetX1();
144	Float_t xmax = gPad->GetX2();
145	Float_t ymin = gPad->GetY1();
146	Float_t ymax = gPad->GetY2();
147	Float_t dy = ymax-ymin;
148
149	TPaveText pad = new TPaveText(xmin, ymin+0.1dy, xmax, ymin+0.15*dy);
150	pad->SetBit(kCanDelete);
151	pad->SetFillColor(42);
152	pad->Draw();
153	char ptitle[100];
154	sprintf(ptitle," %s , fTrack: %d fTrackIndex: %d ",GetName(),fIndex,fTrackIndex);
155	pad->AddText(ptitle);
156	padinspect->cd();
157	padinspect->Update();
158	if (padsav) padsav->cd();
159
160	}
161
162	//_____________________________________________________________________________
163	void AliMUONpoints::InspectDigit()
164	{
165	//
166	// Inspect digit corresponding to this point
167	//
168	if (fDigitIndex < 0) return;
169	TVirtualPad *padsav = gPad;
170	AliMUONdigit *digit = GetDigit();
171	if (digit) digit->Inspect();
172	TVirtualPad padinspect = (TVirtualPad)(gROOT->GetListOfCanvases())->FindObject("inspect");
173	padinspect->cd();
174	Float_t xmin = gPad->GetX1();
175	Float_t xmax = gPad->GetX2();
176	Float_t ymin = gPad->GetY1();
177	Float_t ymax = gPad->GetY2();
178	Float_t dy = ymax-ymin;
179
180	TPaveText pad = new TPaveText(xmin, ymin+0.1dy, xmax, ymin+0.25*dy);
181	pad->SetBit(kCanDelete);
182	pad->SetFillColor(42);
183	pad->Draw();
184	char ptitle[11][100];
185	// sprintf(ptitle[11],"Tracks making this digit");
186	// pad->AddText(ptitle[11]);
187	for (int i=0;i<10;i++) {
188	if (digit->fTracks[i] == 0) continue;
189	sprintf(ptitle[i],"fTrackIndex: %d Charge: %d",digit->fTracks[i],digit->fTcharges[i]);
190	pad->AddText(ptitle[i]);
191	}
192	padinspect->cd();
193	padinspect->Update();
194	if (padsav) padsav->cd();
195
196	}
197
198	//_____________________________________________________________________________
199	Int_t AliMUONpoints::GetTrackIndex()
200	{
201	//
202	// Dump digit corresponding to this point
203	//
204	printf("GetTrackIndex - fTrackIndex %d \n",fTrackIndex);
205	this->Inspect();
206	/*
207	if (fDigitIndex != 0) {
208	Int_t ncol=this->fMatrix->GetNcols();
209	for (int i=0;i<ncol;i++) {
210	printf(" track charge %f %f \n",((this->fMatrix))(0,i),((this->fMatrix))(1,i));
211	}
212	}
213	*/
214	return fTrackIndex;
215	}
216
217	//_____________________________________________________________________________
218	AliMUONhit *AliMUONpoints::GetHit() const
219	{
220	//
221	// Returns pointer to hit index in AliRun::fParticles
222	//
223	AliMUON MUON = (AliMUON)gAlice->GetModule("MUON");
224	gAlice->TreeH()->GetEvent(fTrackIndex);
225	TClonesArray *MUONhits = MUON->Hits();
226	Int_t nhits = MUONhits->GetEntriesFast();
227	if (fHitIndex < 0 \|\| fHitIndex >= nhits) return 0;
228	return (AliMUONhit*)MUONhits->UncheckedAt(fHitIndex);
229	}
230
231	//_____________________________________________________________________________
232	AliMUONdigit *AliMUONpoints::GetDigit() const
233	{
234	//
235	// Returns pointer to digit index in AliRun::fParticles
236	//
237
238	AliMUONdisplay display=(AliMUONdisplay)gAlice->Display();
239	Int_t chamber=display->GetChamber();
240	Int_t cathode=display->GetCathode();
241
242	AliMUON MUON = (AliMUON)gAlice->GetModule("MUON");
243	TClonesArray *MUONdigits = MUON->DigitsAddress(chamber-1);
244	gAlice->TreeD()->GetEvent(cathode);
245	Int_t ndigits = MUONdigits->GetEntriesFast();
246	if (fDigitIndex < 0 \|\| fDigitIndex >= ndigits) return 0;
247	return (AliMUONdigit*)MUONdigits->UncheckedAt(fDigitIndex);
248	}
249	//_____________________________________________________________________________
250	struct Bin {
251	const AliMUONdigit *dig;
252	int idx;
253	Bin() {dig=0; idx=-1;}
254	};
255
256	struct PreCluster : public AliMUONreccluster {
257	const AliMUONdigit* summit;
258	int idx;
259	int cut;
260	int npeaks;
261	int npoly;
262	float xpoly[100];
263	float ypoly[100];
264	float zpoly[100];
265	PreCluster() : AliMUONreccluster() {cut=npeaks=npoly=0;
266	for (int k=0;k<100;k++) {
267	xpoly[k]=ypoly[k]=zpoly[k]=0;
268	}
269	}
270
271	};
272	//_____________________________________________________________________________
273
274	static void FindCluster(AliMUONchamber iChamber, AliMUONsegmentation segmentation, int i, int j, Bin bins[][MAX_Nipy], PreCluster &c)
275
276	{
277
278	//
279	// Find clusters
280	//
281
282	printf("I'm in FindCluster \n");
283
284	Bin& b=bins[i][j];
285	Int_t q=b.dig->fSignal;
286
287	printf("FindCluster - i j q %d %d %d\n",i,j,q);
288
289	if (q<0) {
290	q=-q;
291	c.cut=1;
292	}
293	// if (b.idx >= 0 && b.idx != c.idx) {
294	if (b.idx >= 0 && b.idx > c.idx) {
295	c.idx=b.idx;
296	c.npeaks++;
297	printf("FindCluster - one more peak \n");
298	}
299
300	if (q > TMath::Abs(c.summit->fSignal)) c.summit=b.dig;
301
302	Float_t zpos=iChamber->ZPosition(); // check with Andreas
303
304	Int_t npx = segmentation->Npx();
305	Int_t npy = segmentation->Npy();
306
307	// get pad coordinates and prepare the up and down steps
308	Int_t jup =(j-npy > 0) ? j+1 : (j-npy-1)+npy;
309	Int_t jdown=(j-npy > 0) ? j-1 : (j-npy+1)+npy;
310	// Int_t jup =j+1;
311	// Int_t jdown=j-1;
312	Float_t x, y;
313	segmentation->GetPadCxy(i-npx, j-npy,x, y);
314	Int_t isec0=segmentation->Sector(i-npx,j-npy);
315	printf("FindCluster - i-npx j-npy isec0 %d %d %d \n",i-npx,j-npy,isec0);
316	// printf("FindCluster - x y %f %f \n",x,y);
317
318	Float_t dpy = segmentation->Dpy();
319	Float_t dpx = segmentation->Dpx()/16;
320	Int_t ixx, iyy;
321	Float_t absx=TMath::Abs(x);
322	// iup
323	(y >0) ? segmentation->GetPadIxy(absx+dpx,y+dpy,ixx,iyy) : segmentation->GetPadIxy(absx+dpx,y-dpy,ixx,iyy);
324	printf(" iup: ixx iyy %d %d \n",ixx,iyy);
325	Int_t jtest=TMath::Abs(iyy)-npy-1;
326	if (j != jtest) {
327	printf(" j != jtest - something's wrong %d %d \n",j,jtest);
328	}
329	Int_t iup=(x >0) ? ixx+npx : -ixx+npx;
330	// idown
331	(y >0) ? segmentation->GetPadIxy(absx+dpx,y-dpy,ixx,iyy) : segmentation->GetPadIxy(absx+dpx,y+dpy,ixx,iyy);
332	printf(" idown: ixx iyy %d %d \n",ixx,iyy);
333	Int_t idown=(x >0) ? ixx+npx : -ixx+npx;
334	if (bins[idown][jdown].dig == 0) {
335	(y >0) ? segmentation->GetPadIxy(absx-dpx,y-dpy,ixx,iyy) : segmentation->GetPadIxy(absx-dpx,y+dpy,ixx,iyy);
336	printf(" idown: ixx iyy %d %d \n",ixx,iyy);
337	idown=(x >0) ? ixx+npx : -ixx+npx;
338	}
339
340	printf("i, iup, idown, j, jup, jdown %d %d %d %d %d %d \n",i,iup,idown,j,jup,jdown);
341
342	// calculate center of gravity
343	c.npoly++;
344	if (c.npoly > 100 ) {
345	printf("FindCluster - npoly >100, npoly %d \n",c.npoly);
346	c.npoly=100;
347	}
348	c.xpoly[c.npoly-1]=x;
349	c.ypoly[c.npoly-1]=y;
350	c.zpoly[c.npoly-1]=zpos;
351
352	c.fX += q*x;
353	c.fY += q*y;
354	c.fQ += q;
355
356	b.dig = 0; b.idx = c.idx;
357
358	// left and right
359	if (bins[i-1][j].dig) FindCluster(iChamber,segmentation,i-1,j,bins,c);
360	if (bins[i+1][j].dig) FindCluster(iChamber,segmentation,i+1,j,bins,c);
361	// up and down
362	if (bins[iup][jup].dig) FindCluster(iChamber,segmentation,iup,jup,bins,c);
363	if (bins[idown][jdown].dig) FindCluster(iChamber,segmentation,idown,jdown,bins,c);
364
365	}
366
367	//_____________________________________________________________________________
368
369	void AliMUONpoints::GetCenterOfGravity()
370	{
371	//
372	// simple MUON cluster finder from digits -- finds neighbours and
373	// calculates center of gravity for the cluster
374	//
375
376	// const Int_t MAX_Nipx=1026, MAX_Nipy=1026;
377
378	Bin bins[MAX_Nipx][MAX_Nipy];
379
380	AliMUONdisplay display=(AliMUONdisplay)gAlice->Display();
381	Int_t chamber=display->GetChamber();
382	Int_t cathode=display->GetCathode();
383
384	AliMUON MUON = (AliMUON)gAlice->GetModule("MUON");
385	AliMUONchamber *iChamber;
386	AliMUONsegmentation *segmentation;
387	iChamber =&(MUON->Chamber(chamber-1));
388	segmentation=iChamber->GetSegmentationModel(cathode);
389	Int_t npx = segmentation->Npx();
390	Int_t npy = segmentation->Npy();
391	Float_t zpos=iChamber->ZPosition();
392
393	TClonesArray *MUONdigits = MUON->DigitsAddress(chamber-1);
394	gAlice->TreeD()->GetEvent(cathode);
395	Int_t ndigits = MUONdigits->GetEntriesFast();
396	if (fDigitIndex < 0 \|\| fDigitIndex >= ndigits) return;
397
398	AliMUONdigit *dig;
399	dig=(AliMUONdigit*)MUONdigits->UncheckedAt(fDigitIndex);
400	Int_t ipx=dig->fPadX;
401	Int_t ipy=dig->fPadY;
402	bins[ipx+npx][ipy+npy].dig=dig;
403
404	int ndig;
405	int ncls=0;
406	for (ndig=0;ndig<ndigits;ndig++) {
407	dig = (AliMUONdigit*)MUONdigits->UncheckedAt(ndig);
408	int i=dig->fPadX, j=dig->fPadY;
409	bins[i+npx][j+npy].dig=dig;
410	}
411	PreCluster c; c.summit=bins[ipx+npx][ipy+npy].dig; c.idx=ncls;
412	FindCluster(iChamber,segmentation,ipx+npx, ipy+npy, bins, c);
413	printf("GetCenterOfGravity -- npoly %d \n",c.npoly);
414
415	if (c.npeaks>1) {
416	printf("GetCenterOfGravity -- more than one peak");
417	}
418	c.fX /= c.fQ;
419	c.fY /= c.fQ;
420	printf("GetCenterOfGravity - c.fX c.fY c.fQ c.npeaks%f %f %d %d \n",c.fX,c.fY,c.fQ,c.npeaks);
421	/*
422	c.fTracks[0]=(Int_t)(*(c.summit->fTrks))(0);
423	c.fTracks[1]=(Int_t)(*(c.summit->fTrks))(1);
424	c.fTracks[2]=(Int_t)(*(c.summit->fTrks))(2);
425	*/
426	c.fTracks[0]=c.summit->fTracks[0];
427	c.fTracks[1]=c.summit->fTracks[1];
428	c.fTracks[2]=c.summit->fTracks[2];
429	ncls++;
430	AliMUONpoints *points = 0;
431	points = new AliMUONpoints(1);
432	points->SetMarkerColor(kYellow);
433	points->SetMarkerStyle(5);
434	points->SetMarkerSize(1.);
435	points->SetPoint(0,c.fX,c.fY,zpos);
436	points->SetParticle(-1);
437	points->Draw();
438
439	TPolyLine3D *pline=0;
440	/*
441	pline=new TPolyLine3D(c.npoly);
442	Int_t np=c.npoly;
443	Float_t *x=new Float_t(c.npoly);
444	Float_t *y=new Float_t(c.npoly);
445	Float_t *z=new Float_t(c.npoly);
446	for (int i=0;i<np;i++) {
447	x[i]=c.xpoly[i];
448	y[i]=c.ypoly[i];
449	x[i]=c.zpoly[i];
450	pline->SetPoint(i,x[i],y[i],z[i]);
451	}
452	*/
453	pline=new TPolyLine3D(c.npoly,c.xpoly,c.ypoly,c.zpoly);
454	pline->SetLineColor(kWhite);
455	pline->Draw();
456
457
458	printf("GetCenterOfGravity -- ncls %d \n",ncls);
459
460	}
461