/*
$Log$
+ Revision 1.16 2001/10/23 13:03:35 hristov
+ The access to several data members was changed from public to protected. The digitisation was adapted to the multi-event case (J.Chudoba)
+
+ Revision 1.15 2001/10/21 18:31:23 hristov
+ Several pointers were set to zero in the default constructors to avoid memory management problems
+
+ Revision 1.14 2001/05/14 13:25:54 hristov
+ stdlib.h included (for Alpha)
+
+ Revision 1.13 2001/05/10 12:26:31 jbarbosa
+ Totally reworked version of reconstruction algorithm.
+
+ Revision 1.12 2001/02/27 22:15:03 jbarbosa
+ Removed compiler warning.
+
+ Revision 1.11 2001/02/27 15:21:46 jbarbosa
+ Transition to SDigits.
+
+ Revision 1.10 2001/02/13 20:39:06 jbarbosa
+ Changes to make it work with new IO.
+
+ Revision 1.9 2001/01/22 21:39:11 jbarbosa
+ Several tune-ups
+
+ Revision 1.8 2000/11/15 15:52:53 jbarbosa
+ Turned on spot algorithm.
+
+ Revision 1.7 2000/11/01 15:37:05 jbarbosa
+ Updated to use its own rec. point object.
+
+ Revision 1.6 2000/10/02 21:28:12 fca
+ Removal of useless dependecies via forward declarations
+
+ Revision 1.5 2000/06/30 16:30:28 dibari
+ Disabled writing to rechits.
+
+ Revision 1.4 2000/06/15 15:46:59 jbarbosa
+ Corrected compilation errors on HP-UX (replaced pow with TMath::Power)
+
Revision 1.3 2000/06/13 13:15:41 jbarbosa
Still some code cleanup done (variable names)
*/
+#include <stdlib.h>
+
#include "AliRICH.h"
#include "AliRICHPoints.h"
#include "AliRICHDetect.h"
#include "AliRICHHit.h"
#include "AliRICHDigit.h"
+#include "AliRICHRawCluster.h"
+#include "AliRICHCerenkov.h"
+#include "AliRICHSegmentationV0.h"
#include "AliRun.h"
#include "TParticle.h"
+#include "TTree.h"
#include "TMath.h"
#include "TRandom.h"
+#include "TH3.h"
+#include "TH2.h"
+#include "TCanvas.h"
+#include <TStyle.h>
+
+#include "malloc.h"
ClassImp(AliRICHDetect)
// Default constructor
- //fChambers = 0;
+ fc1 = 0;
+ fc2 = 0;
+ fc3 = 0;
+
}
//___________________________________________
AliRICHDetect::AliRICHDetect(const char *name, const char *title)
: TObject()
{
-
-// Constructor
- /*fChambers = new TObjArray(7);
- for (Int_t i=0; i<7; i++) {
+ TStyle *mystyle=new TStyle("Plain","mystyle");
+ mystyle->SetPalette(1,0);
+ mystyle->cd();
+
+
+ fc1= new TCanvas("c1","Reconstructed points",50,50,300,350);
+ fc1->Divide(2,2);
+ fc2= new TCanvas("c2","Reconstructed points after SPOT",370,50,300,350);
+ fc2->Divide(2,2);
+ fc3= new TCanvas("c3","Used Digits",690,50,300,350);
+ fc4= new TCanvas("c4","Mesh activation data",50,430,600,350);
+ fc4->Divide(2,1);
+
+
+}
+
+//___________________________________________
+AliRICHDetect::~AliRICHDetect()
+{
- (*fChambers)[i] = new AliRICHchamber();
-
- } */
+// Destructor
+
}
-void AliRICHDetect::Detect()
+void AliRICHDetect::Detect(Int_t nev, Int_t type)
{
//
//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;
+ Float_t omega,omega1,theta1,phi_relative,steptheta,stepphi,x,y,q=0,z,cx,cy,l,aux1,aux2,aux3,max,radius=0,meanradius=0;
+ Int_t maxi,maxj,maxk;
+ Float_t originalOmega, originalPhi, originalTheta;
+ Float_t binomega, bintheta, binphi;
+ Int_t intomega, inttheta, intphi;
Int_t i,j,k;
+
+ AliRICH *pRICH = (AliRICH*)gAlice->GetDetector("RICH");
+ AliRICHSegmentationV0* segmentation;
+ AliRICHChamber* iChamber;
+ AliRICHGeometry* geometry;
- //const Float_t Noise_Level=0; //Noise Level in percentage of mesh points
- //const Float_t t=0.6; //Softening of Noise Correction (factor)
+ iChamber = &(pRICH->Chamber(0));
+ segmentation=(AliRICHSegmentationV0*) iChamber->GetSegmentationModel(0);
+ geometry=iChamber->GetGeometryModel();
+
- const Float_t kPi=3.1415927;
+ //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 kHeight=10; //Distance from Radiator to Pads in pads
+ const Float_t kPi=TMath::Pi();
+ const Float_t kHeight=geometry->GetRadiatorToPads(); //Distance from Radiator to Pads in centimeters
+ //printf("Distance to Pads:%f\n",kHeight);
+
+ const Int_t kSpot=0; //number of passes with spot algorithm
- const Int_t kDimensionTheta=100; //Matrix dimension for angle Detection
+ const Int_t kDimensionTheta=100; //Matrix dimension for angle Detection
const Int_t kDimensionPhi=100;
const Int_t kDimensionOmega=100;
- //const Float_t SPOTp=.2; //Percentage of spot action
- //const Int_t np=500; //Number of points to reconstruct elipse
- const Float_t kMaxOmega=65*kPi/180; //Maximum Cherenkov angle to identify
-
- Int_t point[kDimensionTheta][kDimensionPhi][kDimensionOmega];
- //Int_t point1[kDimensionTheta][kDimensionPhi][kDimensionOmega];
+ const Float_t SPOTp=.25; //Percentage of spot action
+ const Float_t kMinOmega=.4;
+ const Float_t kMaxOmega=.7; //Maximum Cherenkov angle to identify
+ const Float_t kMinTheta=0;
+ const Float_t kMaxTheta=10*kPi/180;
+ const Float_t kMinPhi=0;
+ const Float_t kMaxPhi=360*kPi/180;
+
+ Float_t rechit[6]; //Reconstructed point data
+
+ Int_t ***point = i3tensor(0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
+ Int_t ***point1 = i3tensor(0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
- steptheta=kPi/kDimensionTheta;
- stepphi=kPi/kDimensionPhi;
+ steptheta=(kMaxTheta-kMinTheta)/kDimensionTheta;
+ stepphi=(kMaxPhi-kMinPhi)/kDimensionPhi;
+
+ static TH3F *Points = new TH3F("Points","Reconstructed points 3D",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
+ static TH2F *ThetaPhi = new TH2F("ThetaPhi","Theta-Phi projection",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi);
+ static TH2F *OmegaTheta = new TH2F("OmegaTheta","Omega-Theta projection",kDimensionTheta,0,kDimensionTheta,kDimensionOmega,0,kDimensionOmega);
+ static TH2F *OmegaPhi = new TH2F("OmegaPhi","Omega-Phi projection",kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
+ static TH3F *SpotPoints = new TH3F("Points","Reconstructed points 3D, spot",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
+ static TH2F *SpotThetaPhi = new TH2F("ThetaPhi","Theta-Phi projection, spot",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi);
+ static TH2F *SpotOmegaTheta = new TH2F("OmegaTheta","Omega-Theta projection, spot",kDimensionTheta,0,kDimensionTheta,kDimensionOmega,0,kDimensionOmega);
+ static TH2F *SpotOmegaPhi = new TH2F("OmegaPhi","Omega-Phi projection, spot",kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
+ static TH2F *DigitsXY = new TH2F("DigitsXY","Pads used for reconstruction",150,-25,25,150,-25,25);
+ static TH1F *AngleAct = new TH1F("AngleAct","Activation per angle",100,.45,1);
+ static TH1F *Activation = new TH1F("Activation","Activation per ring",100,0,25);
+ Points->SetXTitle("theta");
+ Points->SetYTitle("phi");
+ Points->SetZTitle("omega");
+ ThetaPhi->SetXTitle("theta");
+ ThetaPhi->SetYTitle("phi");
+ OmegaTheta->SetXTitle("theta");
+ OmegaTheta->SetYTitle("omega");
+ OmegaPhi->SetXTitle("phi");
+ OmegaPhi->SetYTitle("omega");
+ SpotPoints->SetXTitle("theta");
+ SpotPoints->SetYTitle("phi");
+ SpotPoints->SetZTitle("omega");
+ SpotThetaPhi->SetXTitle("theta");
+ SpotThetaPhi->SetYTitle("phi");
+ SpotOmegaTheta->SetXTitle("theta");
+ SpotOmegaTheta->SetYTitle("omega");
+ SpotOmegaPhi->SetXTitle("phi");
+ SpotOmegaPhi->SetYTitle("omega");
+ AngleAct->SetFillColor(5);
+ AngleAct->SetXTitle("rad");
+ AngleAct->SetYTitle("activation");
+ Activation->SetFillColor(5);
+ Activation->SetXTitle("activation");
- AliRICHChamber* iChamber;
-
- AliRICH *pRICH = (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));
-
+
+ Int_t track;
- for (Int_t track=0; track<ntracks;track++) {
+ for (track=0; track<ntracks;track++) {
gAlice->ResetHits();
gAlice->TreeH()->GetEvent(track);
TClonesArray *pHits = pRICH->Hits();
if (pHits == 0) return;
Int_t nhits = pHits->GetEntriesFast();
if (nhits == 0) continue;
- Int_t nent=(Int_t)gAlice->TreeD()->GetEntries();
- gAlice->TreeD()->GetEvent(nent-1);
+ //Int_t nent=(Int_t)gAlice->TreeD()->GetEntries();
AliRICHHit *mHit = 0;
- AliRICHDigit *points = 0;
//Int_t npoints=0;
- Int_t counter=0;
+ Int_t counter=0, counter1=0;
//Initialization
for(i=0;i<kDimensionTheta;i++)
{
}
}
}
- mHit = (AliRICHHit*) pHits->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];
+
+ Int_t ncerenkovs = pRICH->Cerenkovs()->GetEntriesFast();
- //printf("Chamber processed:%d\n",nch);
- printf("Center processed: %3.1f %3.1f %3.1f\n",trackglob[0],trackglob[1],trackglob[2]);
-
- iChamber = &(pRICH->Chamber(nch-1));
+ originalOmega = 0;
+ counter = 0;
- //printf("Nch:%d\n",nch);
-
- iChamber->GlobaltoLocal(trackglob,trackloc);
+ for (Int_t hit=0;hit<ncerenkovs;hit++) {
+ AliRICHCerenkov* cHit = (AliRICHCerenkov*) pRICH->Cerenkovs()->UncheckedAt(hit);
+ Float_t loss = cHit->fLoss; //did it hit the CsI?
+ Float_t production = cHit->fProduction; //was it produced in freon?
+ Float_t cherenkov = cHit->fCerenkovAngle; //production cerenkov angle
+ if (loss == 4 && production == 1)
+ {
+ counter +=1;
+ originalOmega += cherenkov;
+ //printf("%f\n",cherenkov);
+ }
+ }
- //printf("Transformation 1: %3.1f %3.1f %3.1f\n",trackloc[0],trackloc[1],trackloc[2]);
+ printf("Cerenkovs : %d\n",counter);
+
+ if(counter != 0) //if there are cerenkovs
+ {
+ originalOmega = originalOmega/counter;
+ printf("Original omega: %f\n",originalOmega);
+
- iChamber->LocaltoGlobal(trackloc,trackglob);
-
- //printf("Transformation 2: %3.1f %3.1f %3.1f\n",trackglob[0],trackglob[1],trackglob[2]);
+ mHit = (AliRICHHit*) pHits->UncheckedAt(0);
+ Int_t nch = mHit->Chamber();
+ originalTheta = mHit->Theta();
+ originalPhi = mHit->Phi();
+ trackglob[0] = mHit->X();
+ trackglob[1] = mHit->Y();
+ trackglob[2] = mHit->Z();
+
+ printf("\n--------------------------------------\n");
+ printf("Chamber %d, track %d\n", nch, track);
+
+
+ iChamber = &(pRICH->Chamber(nch-1));
+ //printf("Nch:%d\n",nch);
+
+ iChamber->GlobaltoLocal(trackglob,trackloc);
+ iChamber->LocaltoGlobal(trackloc,trackglob);
+
+
+ cx=trackloc[0];
+ cy=trackloc[2];
+ AliRICHDigit *points = 0;
+ TClonesArray *pDigits = pRICH->DigitsAddress(nch-1);
+
+ AliRICHRawCluster *cluster =0;
+ TClonesArray *pClusters = pRICH->RawClustAddress(nch-1);
- TClonesArray *pDigits = pRICH->DigitsAddress(nch-1);
- Int_t ndigits = pDigits->GetEntriesFast();
-
- //printf("Got %d digits\n",ndigits);
+ Int_t maxcycle=0;
- //printf("Starting calculations\n");
-
- for(Float_t theta=0;theta<kPi/18;theta+=steptheta)
- {
- for(Float_t phi=0;phi<=kPi/3;phi+=stepphi)
- {
- for (Int_t dig=0;dig<ndigits;dig++)
- {
- points=(AliRICHDigit*) pDigits->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(TMath::Power(x,2)+TMath::Power(y,2))<kHeight*tan(theta+kMaxOmega)*3/4)
- {
+ //digitize from digits
+
+ if(type==0)
+ {
+ gAlice->TreeD()->GetEvent(0);
+ Int_t ndigits = pDigits->GetEntriesFast();
+ maxcycle=ndigits;
+ printf("Got %d digits\n",ndigits);
+ }
+
+ //digitize from clusters
+
+ if(type==1)
+ {
+ Int_t nent=(Int_t)gAlice->TreeR()->GetEntries();
+ gAlice->TreeR()->GetEvent(nent-1);
+ Int_t nclusters = pClusters->GetEntriesFast();
+ maxcycle=nclusters;
+ printf("Got %d clusters\n",nclusters);
+ }
+
+
+
+
+ counter=0;
+ printf("Starting calculations\n");
+ printf(" Start Finish\n");
+ printf("Progress: ");
+ for(Float_t theta=0;theta<kMaxTheta;theta+=steptheta)
+ {
+ printf(".");
+ for(Float_t phi=0;phi<=kMaxPhi;phi+=stepphi)
+ {
+ //printf("Phi:%3.1f\n", phi*180/kPi);
+ counter1=0;
+ for (Int_t cycle=0;cycle<maxcycle;cycle++)
+ {
- l=kHeight/cos(theta);
+ if(type==0)
+ {
+ points=(AliRICHDigit*) pDigits->UncheckedAt(cycle);
+ segmentation->GetPadC(points->PadX(), points->PadY(),x, y, z);
+ }
- aux1=-y*sin(phi)+x*cos(phi);
- aux2=y*cos(phi)+x*sin(phi);
- aux3=( TMath::Power(aux1,2)+TMath::Power(cos(theta)*aux2 ,2))/TMath::Power(sin(theta)*aux2+l,2);
- //cout<<"aux1="<<aux1<<" aux2="<<aux2<<" aux3="<<aux3;
+ if(type==1)
+ {
+ cluster=(AliRICHRawCluster*) pClusters->UncheckedAt(cycle);
+ x=cluster->fX;
+ y=cluster->fY;
+ q=cluster->fQ;
+ }
- omega=atan(sqrt(aux3));
- //printf("Omega: %f\n",omega);
+ if(type ==0 || q > 100)
+
+ {
+
+ x=x-cx;
+ y=y-cy;
+ radius=TMath::Sqrt(TMath::Power(x,2)+TMath::Power(y,2));
+
+ //calculation of relative phi angle of digit
+
+ phi_relative = acos(y/radius);
+ phi_relative = TMath::Abs(phi_relative - phi);
+
+
+ if(radius>4)
+ {
+ meanradius+=radius;
+ counter++;
+
+
+ //if (radius < (2*kHeight*tan(theta+kMaxOmega)))
+ if (radius < (2*kHeight*tan(kMaxOmega)))
+ //if(Fiducial(x,y,theta,phi,kHeight,kMaxOmega,kMinOmega))
+ {
+
+ if(phi==0)
+ {
+ //printf("Radius: %f, Max Radius: %f\n",radius,2*kHeight*tan(theta+kMaxOmega)*3/4);
+ //printf("Loaded digit %d with coordinates x:%f, y%f\n",dig,x,y);
+ //printf("Using digit %d, for theta %f\n",dig,theta);
+ }
+
+ counter1++;
+
+ l=kHeight/cos(theta);
+
+ //main calculation
+
+ DigitsXY->Fill(x,y,(float) 1);
+
+ theta1=SnellAngle(theta);
+
+ aux1=-y*sin(phi)+x*cos(phi);
+ aux2=y*cos(phi)+x*sin(phi);
+ aux3=( TMath::Power(aux1,2)+TMath::Power(cos(theta1)*aux2 ,2))/TMath::Power(sin(theta1)*aux2+l,2);
+ omega=atan(sqrt(aux3));
+
+ //omega is distorted, theta1 is distorted
+
+ if(InvSnellAngle(omega+TMath::Abs(cos(phi_relative))*theta1)<999)
+ {
+ omega1=InvSnellAngle(omega+TMath::Abs(cos(phi_relative))*theta);
+ theta1=InvSnellAngle(theta1);
+
+ }
+ else
+ {
+ omega1=0;
+ theta1=0;
+ }
+
+ if(omega1<kMaxOmega && omega1>kMinOmega)
+ {
+ //printf("Omega found:%f\n",omega);
+ omega1=omega1-kMinOmega;
+
+ //printf("Omega: %f Theta: %3.1f Phi:%3.1f\n",omega, theta*180/kPi, phi*180/kPi);
+
+ bintheta=theta1*kDimensionTheta/kMaxTheta;
+ binphi=phi*kDimensionPhi/kMaxPhi;
+ binomega=omega1*kDimensionOmega/(kMaxOmega-kMinOmega);
+
+ if(Int_t(bintheta+0.5)==Int_t(bintheta))
+ inttheta=Int_t(bintheta);
+ else
+ inttheta=Int_t(bintheta+0.5);
+
+ if(Int_t(binomega+0.5)==Int_t(binomega))
+ intomega=Int_t(binomega);
+ else
+ intomega=Int_t(binomega+0.5);
+
+ if(Int_t(binphi+0.5)==Int_t(binphi))
+ intphi=Int_t(binphi);
+ else
+ intphi=Int_t(binphi+0.5);
+
+ //printf("Point added at %d %d %d\n",inttheta,intphi,intomega);
+
+ if(type==0)
+ point[inttheta][intphi][intomega]+=1;
+ if(type==1)
+ point[inttheta][intphi][intomega]+=(Int_t)(q);
+
+ //printf("Omega stored:%d\n",intomega);
+ Points->Fill(inttheta,intphi,intomega,(float) 1);
+ ThetaPhi->Fill(inttheta,intphi,(float) 1);
+ OmegaTheta->Fill(inttheta,intomega,(float) 1);
+ OmegaPhi->Fill(intphi,intomega,(float) 1);
+ //printf("Filling at %d %d %d\n",Int_t(theta*kDimensionTheta/kMaxTheta),Int_t(phi*kDimensionPhi/kMaxPhi),Int_t(omega*kDimensionOmega/kMaxOmega));
+ }
+ //if(omega<kMaxOmega)point[Int_t(theta)][Int_t(phi)][Int_t(omega)]+=1;
+ }
+ }
+ }
- //cout<<"\ni="<<i<<" theta="<<Int_t(2*theta*dimension/kPi)<<" phi="<<Int_t(2*phi*dimension/kPi)<<" omega="<<Int_t(2*omega*dimension/kPi)<<endl<<endl;
- //{Int_t lixo;cin>>lixo;}
- if(omega<kMaxOmega)point[Int_t(2*theta*kDimensionTheta/kPi)][Int_t(2*phi*kDimensionPhi/kPi)][Int_t(omega*kDimensionOmega/kMaxOmega)]+=1;
- //if(omega<kMaxOmega)point[Int_t(theta)][Int_t(phi)][Int_t(omega)]+=1;
}
- }
+ //printf("Used %d digits for theta %3.1f\n",counter1, theta*180/kPi);
+ }
+
}
- }
-
-
+
+ printf("\n");
+
+ meanradius=meanradius/counter;
+ //printf("Mean radius:%f, counter:%d\n",meanradius,counter);
+ rechit[5]=meanradius;
+ //printf("Used %d digits\n",counter1);
+ //printf("\n");
+
+ if(nev<2)
+ {
+ if(nev==0)
+ {
+ fc1->cd(1);
+ Points->Draw("colz");
+ fc1->cd(2);
+ ThetaPhi->Draw("colz");
+ fc1->cd(3);
+ OmegaTheta->Draw("colz");
+ fc1->cd(4);
+ OmegaPhi->Draw("colz");
+ fc3->cd();
+ DigitsXY->Draw("colz");
+ }
+ else
+ {
+ //fc1->cd(1);
+ //Points->Draw("same");
+ //fc1->cd(2);
+ //ThetaPhi->Draw("same");
+ //fc1->cd(3);
+ //OmegaTheta->Draw("same");
+ //fc1->cd(4);
+ //OmegaPhi->Draw("same");
+ }
+ }
+
- //SPOT execute twice
- /*for(s=1;i<=2;s++)
- {
+ //SPOT execute twice
+ for(Int_t s=0;s<kSpot;s++)
+ {
+ printf(" Applying Spot algorithm, pass %d\n", s);
+
//buffer copy
for(i=0;i<=kDimensionTheta;i++)
- for(j=0;j<=kDimensionPhi;j++)
- for(k=0;k<=kDimensionOmega;k++)
- point1[i][j][k]=point[i][j][k];
-
- cout<<"COM SPOT!"<<endl;{Int_t lixo;cin>>lixo;}
+ {
+ for(j=0;j<=kDimensionPhi;j++)
+ {
+ for(k=0;k<=kDimensionOmega;k++)
+ {
+ point1[i][j][k]=point[i][j][k];
+ }
+ }
+ }
+
//SPOT algorithm
- for(i=1;i<kDimensionTheta;i++)
- for(j=1;j<kDimensionPhi;j++)
- for(k=1;k<kDimensionOmega;k++)
+ for(i=1;i<kDimensionTheta-1;i++)
+ {
+ for(j=1;j<kDimensionPhi-1;j++)
{
- 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]))
+ for(k=1;k<kDimensionOmega-1;k++)
{
- //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]);
+ 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_t(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_t(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
+ counter1=0;
for(i=1;i<kDimensionTheta;i++)
- for(j=1;j<kDimensionPhi;j++)
- for(k=1;k<kDimensionOmega;k++)
- point[i][j][k]=point1[i][j][k];
-
- }*/
+ {
+ for(j=1;j<kDimensionPhi;j++)
+ {
+ for(k=1;k<kDimensionOmega;k++)
+ {
+ point[i][j][k]=point1[i][j][k];
+ if(nev<20)
+ {
+ if(s==kSpot-1)
+ {
+ if(point1[i][j][k] != 0)
+ {
+ SpotPoints->Fill(i,j,k,(float) point1[i][j][k]);
+ //printf("Random number %f\n",random->Rndm(2));
+ //if(random->Rndm() < .2)
+ //{
+ SpotThetaPhi->Fill(i,j,(float) point1[i][j][k]);
+ SpotOmegaTheta->Fill(i,k,(float) point1[i][j][k]);
+ SpotOmegaPhi->Fill(j,k,(float) point1[i][j][k]);
+ counter1++;
+ //}
+ //printf("Filling at %d %d %d value %f\n",i,j,k,(float) point1[i][j][k]);
+ }
+ }
+ }
+ //if(point1[i][j][k] != 0)
+ //printf("Last transfer point: %d, point1, %d\n",point[i][j][k],point1[i][j][k]);
+ }
+ }
+ }
+ }
+ //printf("Filled %d cells\n",counter1);
+
+ if(nev<2)
+ {
+ if(nev==0)
+ {
+ fc2->cd(1);
+ SpotPoints->Draw("colz");
+ fc2->cd(2);
+ SpotThetaPhi->Draw("colz");
+ fc2->cd(3);
+ SpotOmegaTheta->Draw("colz");
+ fc2->cd(4);
+ SpotOmegaPhi->Draw("colz");
+ }
+ else
+ {
+ //fc2->cd(1);
+ //SpotPoints->Draw("same");
+ //fc2->cd(2);
+ //SpotThetaPhi->Draw("same");
+ //fc2->cd(3);
+ //SpotOmegaTheta->Draw("same");
+ //fc2->cd(4);
+ //SpotOmegaPhi->Draw("same");
+ }
+ }
- //Identification is equivalent to maximum determination
- max=0;maxi=0;maxj=0;maxk=0;
- //cout<<"Proceeding to Identification"<<endl;
+ //Identification is equivalent to maximum determination
+ max=0;maxi=0;maxj=0;maxk=0;
+
+ printf(" Proceeding to identification");
+
+ for(i=0;i<kDimensionTheta;i++)
+ for(j=0;j<kDimensionPhi;j++)
+ for(k=0;k<kDimensionOmega;k++)
+ if(point[i][j][k]>max)
+ {
+ //cout<<"maxi="<<i*90/dimension<<" maxj="<<j*90/dimension<<" maxk="<<k*kMaxOmega/dimension*180/kPi<<" max="<<max<<endl;
+ maxi=i;maxj=j;maxk=k;
+ max=point[i][j][k];
+ printf(".");
+ //printf("Max Omega %d, Max Theta %d, Max Phi %d (%d counts)\n",maxk,maxi,maxj,max);
+ }
+ printf("\n");
- for(i=1;i<kDimensionTheta-3;i++)
- for(j=1;j<=kDimensionPhi-3;j++)
- for(k=0;k<=kDimensionOmega;k++)
- if(point[i][j][k]>max)
- {
- //cout<<"maxi="<<i*90/dimension<<" maxj="<<j*90/dimension<<" maxk="<<k*kMaxOmega/dimension*180/kPi<<" 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);
- }
+ Float_t FinalOmega = maxk*(kMaxOmega-kMinOmega)/kDimensionOmega;
+ Float_t FinalTheta = maxi*kMaxTheta/kDimensionTheta;
+ Float_t FinalPhi = maxj*kMaxPhi/kDimensionPhi;
+
+ FinalOmega += kMinOmega;
- //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",h,cx,cy,maxk*kPi/(kDimensionTheta*4));
- //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",kHeight,cx,cy,maxk);
+ //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",h,cx,cy,maxk*kPi/(kDimensionTheta*4));
+ printf(" Indentified angles: cerenkov - %f, theta - %3.1f, phi - %3.1f (%f activation)\n", FinalOmega, FinalTheta*180/kPi, FinalPhi*180/kPi, max);
+ //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",kHeight,cx,cy,maxk);
+ AngleAct->Fill(FinalOmega, (float) max);
+ Activation->Fill(max, (float) 1);
- //fscanf(omegas,"%f",&realomega);
- //fscanf(thetas,"%f",&realtheta);
- //printf("Real Omega: %f",realomega);
- //cout<<"Detected:theta="<<maxi*90/kDimensionTheta<<"phi="<<maxj*90/kDimensionPhi<<"omega="<<maxk*kMaxOmega/kDimensionOmega*180/kPi<<" OmegaError="<<fabs(maxk*kMaxOmega/kDimensionOmega*180/kPi-realomega)<<" ThetaError="<<fabs(maxi*90/kDimensionTheta-realtheta)<<endl<<endl;
+ if(nev==0)
+ {
+ fc4->cd(1);
+ AngleAct->Draw();
+ fc4->cd(2);
+ Activation->Draw();
+ }
+ else
+ {
+ fc4->cd(1);
+ AngleAct->Draw("same");
+ fc4->cd(2);
+ Activation->Draw("same");
+ }
+
+
+ //fscanf(omegas,"%f",&realomega);
+ //fscanf(thetas,"%f",&realtheta);
+ //printf("Real Omega: %f",realomega);
+ //cout<<"Detected:theta="<<maxi*90/kDimensionTheta<<"phi="<<maxj*90/kDimensionPhi<<"omega="<<maxk*kMaxOmega/kDimensionOmega*180/kPi<<" OmegaError="<<fabs(maxk*kMaxOmega/kDimensionOmega*180/kPi-realomega)<<" ThetaError="<<fabs(maxi*90/kDimensionTheta-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*kMaxOmega/kDimensionOmega*180/kPi,fabs(maxk*kMaxOmega/kDimensionOmega*180/kPi-realomega),fabs(maxi*90/kDimensionTheta-realtheta));
+ //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*kMaxOmega/kDimensionOmega*180/kPi,fabs(maxk*kMaxOmega/kDimensionOmega*180/kPi-realomega),fabs(maxi*90/kDimensionTheta-realtheta));
/*for(j=0;j<np;j++)
pointpp(maxj*90/kDimensionTheta,maxi*90/kDimensionPhi,maxk*kMaxOmega/kDimensionOmega*180/kPi,cx,cy);//Generates a point on the elipse*/
//Start filling rec. hits
- Float_t rechit[5];
-
- rechit[0] = (Float_t)( maxi*kPi/(kDimensionTheta*4));
- rechit[1] = (Float_t)( maxj*kPi/(kDimensionPhi*4));
- rechit[2] = (Float_t)( maxk*kPi/(kDimensionOmega*4));
- //rechit[0] = (Float_t)( maxi);
- //rechit[1] = (Float_t)( maxj);
- //rechit[2] = (Float_t)( maxk);
+ rechit[0] = FinalTheta;
+ rechit[1] = FinalPhi - 90*kPi/180;
+ rechit[2] = FinalOmega;
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]);
+
+ //CreatePoints(FinalTheta, 270*kPi/180 + FinalPhi, FinalOmega, kHeight);
+
+ printf ("track %d, theta %f, phi %f, omega %f\n\n\n",track,rechit[0],rechit[1]*180/kPi,rechit[2]);
// fill rechits
- pRICH->AddRecHit(nch-1,rechit);
- }
- //printf("\n\n\n\n");
- gAlice->TreeR()->Fill();
- //TTree *TR=gAlice->TreeR();
- //Stat_t ndig=TR->GetEntries();
+ pRICH->AddRecHit3D(nch-1,rechit,originalOmega, originalTheta, originalPhi);
+ //printf("rechit %f %f %f %f %f\n",rechit[0],rechit[1],rechit[2],rechit[3],rechit[4]);
+ //printf("Chamber:%d",nch);
+ }
+
+ else //if no cerenkovs
+
+ {
+
+ rechit[0] = 0;
+ rechit[1] = 0;
+ rechit[2] = 0;
+ rechit[3] = 0;
+ rechit[4] = 0;
+
+ }
+
+ }
+
+ if(type==1) //reco from clusters
+ {
+ pRICH->ResetRawClusters();
+ //Int_t nent=(Int_t)gAlice->TreeR()->GetEntries();
+ //gAlice->TreeR()->GetEvent(track);
+ //printf("Going to branch %d\n",track);
+ //gAlice->GetEvent(nev);
+ }
+
+
+ //printf("\n\n\n\n");
+ gAlice->TreeR()->Fill();
TClonesArray *fRec;
for (i=0;i<kNCH;i++) {
- fRec=pRICH->RecHitsAddress(i);
+ fRec=pRICH->RecHitsAddress3D(i);
int ndig=fRec->GetEntriesFast();
- printf ("Chamber %d, rings %d\n",i,ndig);
+ printf ("Chamber %d, rings %d\n",i+1,ndig);
}
- //printf("Number of rec. hits: %d",ndig);
- pRICH->ResetRecHits();
- //char hname[30];
- //sprintf(hname,"TreeR%d",track);
- //gAlice->TreeR()->Write(hname);
-
+ pRICH->ResetRecHits3D();
+
+ free_i3tensor(point,0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
+ free_i3tensor(point1,0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
}
+
+
Float_t AliRICHDetect:: Area(Float_t theta,Float_t omega)
{
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]
+
+Int_t ***AliRICHDetect::i3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh)
+// allocate a Int_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;
+ long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
+ Int_t ***t;
+
+ int NR_END=1;
+
+ // 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;
}
-// return pointer to array of pointers to rows
-return t;
-}*/
+void AliRICHDetect::free_i3tensor(int ***t, long nrl, long nrh, long ncl, long nch,long ndl, long ndh)
+// free a Int_t f3tensor allocated by i3tensor()
+{
+ int NR_END=1;
-/*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)*kPi/180),l=h/cos(theta*kPi/180),xtrial,y,c0,c1,c2;
-
- //cout<<"fiducial="<<fiducial<<endl;
+ free((char*) (t[nrl][ncl]+ndl-NR_END));
+ free((char*) (t[nrl]+ncl-NR_END));
+ free((char*) (t+nrl-NR_END));
+}
+
+
+Float_t AliRICHDetect:: SnellAngle(Float_t iangle)
+{
+
+// Compute the Snell angle
+
+ Float_t nfreon = 1.295;
+ Float_t nquartz = 1.585;
+ Float_t ngas = 1;
+
+ Float_t sinrangle;
+ Float_t rangle;
+ Float_t a1, a2;
+
+ a1=nfreon/nquartz;
+ a2=nquartz/ngas;
+
+ sinrangle = a1*a2*sin(iangle);
+
+ if(sinrangle>1.) {
+ rangle = 999.;
+ return rangle;
+ }
- 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*kPi/180;
- Float_t theta1=theta*kPi/180;
- Float_t omega1=omega*kPi/180;
- //Solve the eq for a trial x
- c0=-TMath::Power(y*cos(alfa1)*cos(theta1),2)-TMath::Power(y*sin(alfa1),2)+TMath::Power(l*tan(omega1),2)+2*l*y*cos(alfa1)*sin(theta1)*TMath::Power(tan(omega1),2)+TMath::Power(y*cos(alfa1)*sin(theta1)*tan(omega1),2);
- c1=2*y*cos(alfa1)*sin(alfa1)-2*y*cos(alfa1)*TMath::Power(cos(theta1),2)*sin(alfa1)+2*l*sin(alfa1)*sin(theta1)*TMath::Power(tan(omega1),2)+2*y*cos(alfa1)*sin(alfa1)*TMath::Power(sin(theta1),2)*TMath::Power(tan(omega1),2);
- c2=-TMath::Power(cos(alfa1),2)-TMath::Power(cos(theta1)*sin(alfa1),2)+TMath::Power(sin(alfa1)*sin(theta1)*tan(omega1),2);
- //cout<<"Trial: y="<<y<<"c0="<<c0<<" c1="<<c1<<" c2="<<c2<<endl;
+ rangle = asin(sinrangle);
+ return rangle;
+}
+
+Float_t AliRICHDetect:: InvSnellAngle(Float_t rangle)
+{
+
+// Compute the inverse Snell angle
+
+ Float_t nfreon = 1.295;
+ Float_t nquartz = 1.585;
+ Float_t ngas = 1;
+
+ Float_t siniangle;
+ Float_t iangle;
+ Float_t a1,a2;
+
+ a1=nfreon/nquartz;
+ a2=nquartz/ngas;
+
+ siniangle = sin(rangle)/(a1*a2);
+ iangle = asin(siniangle);
+
+ if(siniangle>1.) {
+ iangle = 999.;
+ return iangle;
}
- //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);
- }*/
+
+ iangle = asin(siniangle);
+ return iangle;
+}
+//________________________________________________________________________________
+void AliRICHDetect::CreatePoints(Float_t theta, Float_t phi, Float_t omega, Float_t h)
+{
+
+ // Create points along the ellipse equation
+
+ Int_t s1,s2;
+ Float_t fiducial=h*TMath::Tan(omega+theta), l=h/TMath::Cos(theta), xtrial, y=0, c0, c1, c2;
+ //TRandom *random=new TRandom();
+
+ static TH2F *REllipse = new TH2F("REllipse","Reconstructed ellipses",150,-25,25,150,-25,25);
+
+ for(Float_t i=0;i<1000;i++)
+ {
+
+ Float_t counter=0;
+
+ c0=0;c1=0;c2=0;
+ while((c1*c1-4*c2*c0)<=0 && counter<1000)
+ {
+ //Choose which side to go...
+ if(i>250 && i<750) s1=1;
+ //if (gRandom->Rndm(1)>.5) s1=1;
+ else s1=-1;
+ //printf("s1:%d\n",s1);
+ //Trial a y
+ y=s1*i*gRandom->Rndm(Int_t(fiducial/50));
+ //printf("Fiducial %f for omega:%f theta:%f phi:%f\n",fiducial,omega,theta,fphi);
+ Float_t alfa1=theta;
+ Float_t theta1=phi;
+ Float_t omega1=omega;
+
+ //Solve the eq for a trial x
+ c0=-TMath::Power(y*TMath::Cos(alfa1)*TMath::Cos(theta1),2)-TMath::Power(y*TMath::Sin(alfa1),2)+TMath::Power(l*TMath::Tan(omega1),2)+2*l*y*TMath::Cos(alfa1)*TMath::Sin(theta1)*TMath::Power(TMath::Tan(omega1),2)+TMath::Power(y*TMath::Cos(alfa1)*TMath::Sin(theta1)*TMath::Tan(omega1),2);
+ c1=2*y*TMath::Cos(alfa1)*TMath::Sin(alfa1)-2*y*TMath::Cos(alfa1)*TMath::Power(TMath::Cos(theta1),2)*TMath::Sin(alfa1)+2*l*TMath::Sin(alfa1)*TMath::Sin(theta1)*TMath::Power(TMath::Tan(omega1),2)+2*y*TMath::Cos(alfa1)*TMath::Sin(alfa1)*TMath::Power(TMath::Sin(theta1),2)*TMath::Power(TMath::Tan(omega1),2);
+ c2=-TMath::Power(TMath::Cos(alfa1),2)-TMath::Power(TMath::Cos(theta1)*TMath::Sin(alfa1),2)+TMath::Power(TMath::Sin(alfa1)*TMath::Sin(theta1)*TMath::Tan(omega1),2);
+ //cout<<"Trial: y="<<y<<"c0="<<c0<<" c1="<<c1<<" c2="<<c2<<endl;
+ //printf("Result:%f\n\n",c1*c1-4*c2*c0);
+ //i+=.01;
+ counter +=1;
+ }
+
+ if (counter>=1000)
+ y=0;
+
+ //Choose which side to go...
+ //if(gRandom->Rndm(1)>.5) s=1;
+ //else s=-1;
+ if(i>500) s2=1;
+ //if (gRandom->Rndm(1)>.5) s2=1;
+ else s2=-1;
+ xtrial=(-c1+s2*TMath::Sqrt(c1*c1-4*c2*c0))/(2*c2);
+ //cout<<"x="<<xtrial<<" y="<<cy+y<<endl;
+ //printf("Coordinates: %f %f\n",xtrial,fCy+y);
+
+ REllipse->Fill(xtrial,y);
+
+ //printf("Coordinates: %f %f %f\n",vectorGlob[0],vectorGlob[1],vectorGlob[2]);
+ }
+
+ fc3->cd(2);
+ REllipse->Draw();
+}
+Int_t AliRICHDetect::Fiducial(Float_t rotx, Float_t roty, Float_t theta, Float_t phi, Float_t height, Float_t maxOmega, Float_t minOmega)
+{
+
+ Float_t x,y,y1,h,omega1,omega2;
+
+ Float_t a,b, offset;
+ Float_t a1,b1, offset1;
+ h = height;
+ //refraction calculation
+
+ theta = SnellAngle(theta);
+ phi = phi - TMath::Pi();
+ omega1 = SnellAngle(maxOmega);
+ omega2 = SnellAngle(minOmega);
+
+ //maximum zone
+ a = h*(tan(omega1+theta)+tan(omega1-theta))/2;
+ b = h*tan(omega1);
+
+ offset = h*(tan(omega1+theta)-tan(omega1-theta))/2;
+
+
+ //minimum zone
+ a1 = h*(tan(omega2+theta)+tan(omega2-theta))/2;
+ b1 = h*tan(omega2);
+
+ offset1 = h*(tan(omega2+theta)-tan(omega2-theta))/2;
+
+
+ //rotation to phi=0
+ x = rotx*cos(phi)+roty*sin(phi);
+ y = -rotx*sin(phi)+roty*cos(phi) - offset;
+ y1 = -rotx*sin(phi)+roty*cos(phi) - offset1;
+
+
+ if(x*x/a+y*y/b<1 && x*x/a1+y1*y1/b1>1)
+ return 1;
+ else
+ return 0;
+
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff