--- /dev/null
+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+/*
+ $Log$
+*/
+
+
+#include "AliRICH.h"
+#include "AliRICHPoints.h"
+#include "AliRICHDetect.h"
+#include "DataStructures.h"
+#include "AliRun.h"
+#include "TParticle.h"
+#include "TMath.h"
+#include "TRandom.h"
+
+
+
+ClassImp(AliRICHDetect)
+//___________________________________________
+AliRICHDetect::AliRICHDetect() : TObject()
+{
+ //fChambers = 0;
+}
+
+//___________________________________________
+AliRICHDetect::AliRICHDetect(const char *name, const char *title)
+ : TObject()
+{
+
+ /*fChambers = new TObjArray(7);
+ for (Int_t i=0; i<7; i++) {
+
+ (*fChambers)[i] = new AliRICHchamber();
+
+ } */
+}
+
+
+void AliRICHDetect::Detect()
+{
+
+ //printf("Detection started!\n");
+ Float_t OMEGA,steptheta,stepphi,x,y,cx,cy,l,aux1,aux2,aux3,maxi,maxj,maxk,max;
+ //Float_t theta,phi,realomega,realtheta;
+ Int_t i,j,k;
+
+ //const Float_t Noise_Level=0; //Noise Level in percentage of mesh points
+ //const Float_t t=0.6; //Softening of Noise Correction (factor)
+
+ const Float_t Pii=3.1415927;
+
+ const Float_t h=10; //Distance from Radiator to Pads in pads
+
+
+ const Int_t dimensiontheta=100; //Matrix dimension for angle Detection
+ const Int_t dimensionphi=100;
+ const Int_t dimensionOMEGA=100;
+
+ //const Float_t SPOTp=.2; //Percentage of spot action
+ //const Int_t np=500; //Number of points to reconstruct elipse
+ const Float_t maxOMEGA=65*Pii/180; //Maximum Cherenkov angle to identify
+
+ Int_t Point[dimensiontheta][dimensionphi][dimensionOMEGA];
+ //Int_t Point1[dimensiontheta][dimensionphi][dimensionOMEGA];
+
+ steptheta=Pii/dimensiontheta;
+ stepphi=Pii/dimensionphi;
+
+ AliRICHChamber* iChamber;
+
+ AliRICH *RICH = (AliRICH*)gAlice->GetDetector("RICH");
+ Int_t ntracks = (Int_t)gAlice->TreeH()->GetEntries();
+ //Int_t ntrks = gAlice->GetNtrack();
+
+ Float_t trackglob[3];
+ Float_t trackloc[3];
+
+ //printf("Got ntracks:%d\n",ntracks);
+ /*TVector *xp = new TVector(1000);
+ TVector *yp = new TVector(1000);
+ TVector *zp = new TVector(1000);
+ TVector *ptrk = new TVector(1000);
+ TVector *phit = new TVector(1000);*/
+
+ //printf("Area de uma elipse com teta 0 e Omega 45:%f",Area(0,45));
+
+
+ for (Int_t track=0; track<ntracks;track++) {
+ gAlice->ResetHits();
+ gAlice->TreeH()->GetEvent(track);
+ TClonesArray *Hits = RICH->Hits();
+ if (Hits == 0) return;
+ Int_t nhits = Hits->GetEntriesFast();
+ if (nhits == 0) continue;
+ Int_t nent=(Int_t)gAlice->TreeD()->GetEntries();
+ gAlice->TreeD()->GetEvent(nent-1);
+ AliRICHHit *mHit = 0;
+ AliRICHDigit *points = 0;
+ //Int_t npoints=0;
+
+ Int_t counter=0;
+ //Initialization
+ for(i=0;i<dimensiontheta;i++)
+ {
+ for(j=0;j<dimensionphi;j++)
+ {
+ for(k=0;k<dimensionOMEGA;k++)
+ {
+ counter++;
+ Point[i][j][k]=0;
+ //printf("Dimensions theta:%d, phi:%d, omega:%d",dimensiontheta,dimensionphi,dimensionOMEGA);
+ //printf("Resetting %d %d %d, time %d\n",i,j,k,counter);
+ //-Noise_Level*(Area(i*Pii/(18*dimension),k*maxOMEGA/dimension)-Area((i-1)*Pii/(18*dimension),(k-1)*maxOMEGA/dimension));
+ //printf("n-%f",-Noise_Level*(Area(i*Pii/(18*dimension),k*maxOMEGA/dimension)-Area((i-1)*Pii/(18*dimension),(k-1)*maxOMEGA/dimension)));
+ }
+ }
+ }
+ mHit = (AliRICHHit*) Hits->UncheckedAt(0);
+ //printf("Aqui vou eu\n");
+ Int_t nch = mHit->fChamber;
+ //printf("Aqui fui eu\n");
+ trackglob[0] = mHit->fX;
+ trackglob[1] = mHit->fY;
+ trackglob[2] = mHit->fZ;
+
+ cx=trackglob[0];
+ cy=trackglob[2];
+
+
+ //printf("Chamber processed:%d\n",nch);
+ printf("Center processed: %3.1f %3.1f %3.1f\n",trackglob[0],trackglob[1],trackglob[2]);
+
+ iChamber = &(RICH->Chamber(nch-1));
+
+ //printf("Nch:%d\n",nch);
+
+ iChamber->GlobaltoLocal(trackglob,trackloc);
+
+ printf("Transformation 1: %3.1f %3.1f %3.1f\n",trackloc[0],trackloc[1],trackloc[2]);
+
+
+ iChamber->LocaltoGlobal(trackloc,trackglob);
+
+ printf("Transformation 2: %3.1f %3.1f %3.1f\n",trackglob[0],trackglob[1],trackglob[2]);
+
+
+
+
+ TClonesArray *Digits = RICH->DigitsAddress(nch-1);
+ Int_t ndigits = Digits->GetEntriesFast();
+
+ //printf("Got %d digits\n",ndigits);
+
+ //printf("Starting calculations\n");
+
+ for(Float_t theta=0;theta<Pii/18;theta+=steptheta)
+ {
+ for(Float_t phi=0;phi<=Pii/3;phi+=stepphi)
+ {
+ for (Int_t dig=0;dig<ndigits;dig++)
+ {
+ points=(AliRICHDigit*) Digits->UncheckedAt(dig);
+
+ x=points->fPadX-cx;
+ y=points->fPadY-cy;
+ //printf("Loaded digit %d with coordinates x:%f, y%f\n",dig,x,y);
+ //cout<<"x="<<x<<" y="<<y<<endl;
+
+ if (sqrt(pow(x,2)+pow(y,2))<h*tan(theta+maxOMEGA)*3/4)
+ {
+
+ l=h/cos(theta);
+
+ aux1=-y*sin(phi)+x*cos(phi);
+ aux2=y*cos(phi)+x*sin(phi);
+ aux3=( pow(aux1,2)+pow(cos(theta)*aux2 ,2))/pow(sin(theta)*aux2+l,2);
+ //cout<<"aux1="<<aux1<<" aux2="<<aux2<<" aux3="<<aux3;
+
+ OMEGA=atan(sqrt(aux3));
+ //printf("Omega: %f\n",OMEGA);
+
+ //cout<<"\ni="<<i<<" theta="<<Int_t(2*theta*dimension/Pii)<<" phi="<<Int_t(2*phi*dimension/Pii)<<" OMEGA="<<Int_t(2*OMEGA*dimension/Pii)<<endl<<endl;
+ //{Int_t lixo;cin>>lixo;}
+ if(OMEGA<maxOMEGA)Point[Int_t(2*theta*dimensiontheta/Pii)][Int_t(2*phi*dimensionphi/Pii)][Int_t(OMEGA*dimensionOMEGA/maxOMEGA)]+=1;
+ //if(OMEGA<maxOMEGA)Point[Int_t(theta)][Int_t(phi)][Int_t(OMEGA)]+=1;
+ }
+ }
+ }
+ }
+
+
+
+ //SPOT execute twice
+ /*for(s=1;i<=2;s++)
+ {
+ //buffer copy
+ for(i=0;i<=dimensiontheta;i++)
+ for(j=0;j<=dimensionphi;j++)
+ for(k=0;k<=dimensionOMEGA;k++)
+ Point1[i][j][k]=Point[i][j][k];
+
+ cout<<"COM SPOT!"<<endl;{Int_t lixo;cin>>lixo;}
+ //SPOT algorithm
+ for(i=1;i<dimensiontheta;i++)
+ for(j=1;j<dimensionphi;j++)
+ for(k=1;k<dimensionOMEGA;k++)
+ {
+ if((Point[i][k][j]>Point[i-1][k][j])&&(Point[i][k][j]>Point[i+1][k][j])&&
+ (Point[i][k][j]>Point[i][k-1][j])&&(Point[i][k][j]>Point[i][k+1][j])&&
+ (Point[i][k][j]>Point[i][k][j-1])&&(Point[i][k][j]>Point[i][k][j+1]))
+ {
+ //cout<<"SPOT"<<endl;
+ //Execute SPOT on point
+ Point1[i][j][k]+=int(SPOTp*(Point[i-1][k][j]+Point[i+1][k][j]+Point[i][k-1][j]+Point[i][k+1][j]+Point[i][k][j-1]+Point[i][k][j+1]));
+ Point1[i-1][k][j]=int(SPOTp*Point[i-1][k][j]);
+ Point1[i+1][k][j]=Int_t(SPOTp*Point[i+1][k][j]);
+ Point1[i][k-1][j]=Int_t(SPOTp*Point[i][k-1][j]);
+ Point1[i][k+1][j]=Int_t(SPOTp*Point[i][k+1][j]);
+ Point1[i][k][j-1]=Int_t(SPOTp*Point[i][k][j-1]);
+ Point1[i][k][j+1]=Int_t(SPOTp*Point[i][k][j+1]);
+ }
+ }
+ //copy from buffer copy
+ for(i=1;i<dimensiontheta;i++)
+ for(j=1;j<dimensionphi;j++)
+ for(k=1;k<dimensionOMEGA;k++)
+ Point[i][j][k]=Point1[i][j][k];
+
+ }*/
+
+
+ //Identification is equivalent to maximum determination
+ max=0;maxi=0;maxj=0;maxk=0;
+
+ //cout<<"Proceeding to Identification"<<endl;
+
+ for(i=1;i<dimensiontheta-3;i++)
+ for(j=1;j<=dimensionphi-3;j++)
+ for(k=0;k<=dimensionOMEGA;k++)
+ if(Point[i][j][k]>max)
+ {
+ //cout<<"maxi="<<i*90/dimension<<" maxj="<<j*90/dimension<<" maxk="<<k*maxOMEGA/dimension*180/Pii<<" max="<<max<<endl;
+ maxi=i;maxj=j;maxk=k;
+ max=Point[i][j][k];
+ //printf("Max Omega %f, Max Theta %f, Max Phi %f\n",maxk,maxi,maxj);
+ }
+
+ //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",h,cx,cy,maxk*Pii/(dimensiontheta*4));
+ //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",h,cx,cy,maxk);
+
+
+ //fscanf(omegas,"%f",&realomega);
+ //fscanf(thetas,"%f",&realtheta);
+ //printf("Real Omega: %f",realomega);
+ //cout<<"Detected:theta="<<maxi*90/dimensiontheta<<"phi="<<maxj*90/dimensionphi<<"OMEGA="<<maxk*maxOMEGA/dimensionOMEGA*180/Pii<<" OmegaError="<<fabs(maxk*maxOMEGA/dimensionOMEGA*180/Pii-realomega)<<" ThetaError="<<fabs(maxi*90/dimensiontheta-realtheta)<<endl<<endl;
+
+ //fprintf(results,"Center Coordinates, cx=%6.2f cy=%6.2f, Real Omega=%6.2f, Detected Omega=%6.2f, Omega Error=%6.2f Theta Error=%6.2f\n",cx,cy,realomega,maxk*maxOMEGA/dimensionOMEGA*180/Pii,fabs(maxk*maxOMEGA/dimensionOMEGA*180/Pii-realomega),fabs(maxi*90/dimensiontheta-realtheta));
+
+ /*for(j=0;j<np;j++)
+ Pointpp(maxj*90/dimensiontheta,maxi*90/dimensionphi,maxk*maxOMEGA/dimensionOMEGA*180/Pii,cx,cy);//Generates a point on the elipse*/
+
+
+ //Start filling rec. hits
+
+ Float_t rechit[5];
+
+ rechit[0] = (Float_t)( maxi*Pii/(dimensiontheta*4));
+ rechit[1] = (Float_t)( maxj*Pii/(dimensionphi*4));
+ rechit[2] = (Float_t)( maxk*Pii/(dimensionOMEGA*4));
+ //rechit[0] = (Float_t)( maxi);
+ //rechit[1] = (Float_t)( maxj);
+ //rechit[2] = (Float_t)( maxk);
+ rechit[3] = cx;
+ rechit[4] = cy;
+
+ //printf ("track %d, theta %f, phi %f, omega %f\n\n\n",track,rechit[0],rechit[1],rechit[2]);
+
+ // fill rechits
+ RICH->AddRecHit(nch-1,rechit);
+ }
+ //printf("\n\n\n\n");
+ gAlice->TreeR()->Fill();
+ //TTree *TR=gAlice->TreeR();
+ //Stat_t ndig=TR->GetEntries();
+ TClonesArray *fRec;
+ for (i=0;i<7;i++) {
+ fRec=RICH->RecHitsAddress(i);
+ int ndig=fRec->GetEntriesFast();
+ printf ("Chamber %d, rings %d\n",i,ndig);
+ }
+ //printf("Number of rec. hits: %d",ndig);
+ RICH->ResetRecHits();
+ //char hname[30];
+ //sprintf(hname,"TreeR%d",track);
+ //gAlice->TreeR()->Write(hname);
+
+}
+
+Float_t AliRICHDetect:: Area(Float_t theta,Float_t OMEGA)
+{
+
+ Float_t area;
+ const Float_t h=9.25; //Distance from Radiator to Pads in pads
+
+ area=TMath::Pi()*pow(h*tan(OMEGA),2)/pow(pow(cos(theta),2)-pow(tan(OMEGA)*sin(theta),2),3/2);
+
+ return (area);
+}
+
+/*Int_t ***AliRICHDetect::i3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh)
+// allocate a Float_t 3tensor with range t[nrl..nrh][ncl..nch][ndl..ndh]
+{
+long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
+Int_t ***t;
+
+// allocate pointers to pointers to rows
+t=(Int_t ***) malloc((size_t)((nrow+NR_END)*sizeof(Int_t**)));
+if (!t) printf("allocation failure 1 in f3tensor()");
+t += NR_END;
+t -= nrl;
+
+// allocate pointers to rows and set pointers to them
+t[nrl]=(Int_t **) malloc((size_t)((nrow*ncol+NR_END)*sizeof(Int_t*)));
+if (!t[nrl]) printf("allocation failure 2 in f3tensor()");
+t[nrl] += NR_END;
+t[nrl] -= ncl;
+
+// allocate rows and set pointers to them
+t[nrl][ncl]=(Int_t *) malloc((size_t)((nrow*ncol*ndep+NR_END)*sizeof(Int_t)));
+if (!t[nrl][ncl]) printf("allocation failure 3 in f3tensor()");
+t[nrl][ncl] += NR_END;
+t[nrl][ncl] -= ndl;
+
+for(j=ncl+1;j<=nch;j++) t[nrl][j]=t[nrl][j-1]+ndep;
+for(i=nrl+1;i<=nrh;i++) {
+t[i]=t[i-1]+ncol;
+t[i][ncl]=t[i-1][ncl]+ncol*ndep;
+for(j=ncl+1;j<=nch;j++) t[i][j]=t[i][j-1]+ndep;
+}
+
+// return pointer to array of pointers to rows
+return t;
+}*/
+
+/*void Pointpp(Float_t alfa,Float_t theta,Float_t OMEGA,Float_t cx,Float_t cy)
+ {
+ Int_t s;
+ Float_t fiducial=h*tan((OMEGA+theta)*Pii/180),l=h/cos(theta*Pii/180),xtrial,y,c0,c1,c2;
+
+ //cout<<"fiducial="<<fiducial<<endl;
+
+ c0=0;c1=0;c2=0;
+ while((c1*c1-4*c2*c0)<=0)
+ {
+ //Choose which side to go...
+ if(aleat(1)>.5) s=1; else s=-1;
+ //Trial a y
+ y=s*aleat(fiducial);
+ Float_t alfa1=alfa*Pii/180;
+ Float_t theta1=theta*Pii/180;
+ Float_t OMEGA1=OMEGA*Pii/180;
+ //Solve the eq for a trial x
+ c0=-pow(y*cos(alfa1)*cos(theta1),2)-pow(y*sin(alfa1),2)+pow(l*tan(OMEGA1),2)+2*l*y*cos(alfa1)*sin(theta1)*pow(tan(OMEGA1),2)+pow(y*cos(alfa1)*sin(theta1)*tan(OMEGA1),2);
+ c1=2*y*cos(alfa1)*sin(alfa1)-2*y*cos(alfa1)*pow(cos(theta1),2)*sin(alfa1)+2*l*sin(alfa1)*sin(theta1)*pow(tan(OMEGA1),2)+2*y*cos(alfa1)*sin(alfa1)*pow(sin(theta1),2)*pow(tan(OMEGA1),2);
+ c2=-pow(cos(alfa1),2)-pow(cos(theta1)*sin(alfa1),2)+pow(sin(alfa1)*sin(theta1)*tan(OMEGA1),2);
+ //cout<<"Trial: y="<<y<<"c0="<<c0<<" c1="<<c1<<" c2="<<c2<<endl;
+ }
+ //Choose which side to go...
+ if(aleat(1)>.5) s=1; else s=-1;
+ xtrial=cx+(-c1+s*sqrt(c1*c1-4*c2*c0))/(2*c2);
+ //cout<<"x="<<xtrial<<" y="<<cy+y<<endl;
+ fprintf(final,"%f %f\n",xtrial,cy+y);
+ }*/
+
+
+
+
+
+
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