-#include "AliITSmodule.h"
+/**************************************************************************
+ * 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. *
+ **************************************************************************/
+
+/* $Id$ */
+
+#include <TArrayI.h>
+
+#include <stdlib.h>
+
#include "AliRun.h"
+#include "AliITS.h"
+#include "AliITShit.h"
+#include "AliITSmodule.h"
+#include "AliITSgeom.h"
ClassImp(AliITSmodule)
//
// Impementation of class AliITSmodule
//
-// created by: A. Bouchm, W. Peryt, S. Radomski, P. Skowronski
+// created by: A. Bouchm, W. Peryt, S. Radomski, P. Skowronski
// R. Barbers, B. Batyunia, B. S. Nilsen
// ver 1.0 CERN 16.09.1999
//_______________________________________________________________________
-//
-
//________________________________________________________________________
//
// Constructors and deconstructor
//________________________________________________________________________
//
-
-
AliITSmodule::AliITSmodule() {
+ // constructor
- fIndex = 0;
- fHitsM = new TObjArray();
- fNhitsM = 0;
- fITS = (AliITS*)(gAlice->GetDetector("ITS"));
-}
-
+ fHitsM = 0;
+ fTrackIndex = 0;
+ fHitIndex = 0;
+ fITS = 0;
+}
//_________________________________________________________________________
-
AliITSmodule::AliITSmodule(Int_t index) {
+ // constructor
- fIndex = index;
- fHitsM = new TObjArray();
- fNhitsM = 0;
- fITS = (AliITS*)(gAlice->GetDetector("ITS"));
+ fIndex = index;
+ fHitsM = new TObjArray();
+ fTrackIndex = new TArrayI(16);
+ fHitIndex = new TArrayI(16);
+ fITS = (AliITS*)(gAlice->GetDetector("ITS"));
}
-
-
//__________________________________________________________________________
-
AliITSmodule::~AliITSmodule() {
- if(fHitsM) delete fHitsM;
- fNhitsM = 0;
-}
+ // The destructor for AliITSmodule. Before destoring AliITSmodule
+ // we must first destroy all of it's members.
+ if(fHitsM){
+ fHitsM->Delete();
+ delete fHitsM;
+ fHitsM = 0;
+ } // end if
+ delete fTrackIndex;
+ delete fHitIndex;
+ fITS = 0; // We don't delete this pointer since it is just a copy.
+}
+//____________________________________________________________________________
+AliITSmodule::AliITSmodule(const AliITSmodule &source):TObject(source){
+////////////////////////////////////////////////////////////////////////
+// Copy Constructor
+////////////////////////////////////////////////////////////////////////
+ Error("AliITSmodule","AliITSmodule class has not to be copied! Exit.");
+ exit(1);
+}
+//_____________________________________________________________________________
+AliITSmodule& AliITSmodule::operator=(const AliITSmodule &source){
+////////////////////////////////////////////////////////////////////////
+// Assignment operator
+////////////////////////////////////////////////////////////////////////
+ if(&source == this) return *this;
+ Error("AliITSmodule","AliITSmodule class has not to be copied! Exit.");
+ exit(1);
+ return *this; // fake return neded on Sun
+}
//_________________________________________________________________________
//
-// Hits menagement
+// Hits management
//__________________________________________________________________________
+Int_t AliITSmodule::AddHit(AliITShit* hit,Int_t t,Int_t h) {
+// Hits management
-
-Int_t AliITSmodule::AddHit(AliITShit* hit ) {
- fHitsM->AddLast(hit);
- fNhitsM = fHitsM->GetEntriesFast();
+ //printf("AddHit: beginning hit %p t h %d %d\n",hit,t,h);
+ fHitsM->AddLast(new AliITShit(*hit));
+ Int_t fNhitsM = fHitsM->GetEntriesFast();
+ if(fNhitsM-1>=fTrackIndex->GetSize()){ // need to expand the TArrayI
+ fTrackIndex->Set(fNhitsM+64);
+ } // end if
+ if(fNhitsM-1>=fHitIndex->GetSize()){ // need to expand the TArrayI
+ fHitIndex->Set(fNhitsM+64);
+ } // end if
+ (*fTrackIndex)[fNhitsM-1] = t;
+ (*fHitIndex)[fNhitsM-1] = h;
return fNhitsM;
}
+//___________________________________________________________________________
+Double_t AliITSmodule::PathLength(Int_t index,AliITShit *itsHit1,
+ AliITShit *itsHit2){
+ // path lenght
+ Float_t x1g,y1g,z1g;
+ Float_t x2g,y2g,z2g;
+ Double_t s;
+
+ index = 0;
+ itsHit1->GetPositionG(x1g,y1g,z1g);
+ itsHit2->GetPositionG(x2g,y2g,z2g);
+
+ s = TMath::Sqrt( ((Double_t)(x2g-x1g)*(Double_t)(x2g-x1g)) +
+ ((Double_t)(y2g-y1g)*(Double_t)(y2g-y1g)) +
+ ((Double_t)(z2g-z1g)*(Double_t)(z2g-z1g)) );
+ return s;
+}
+//___________________________________________________________________________
+void AliITSmodule::PathLength(Int_t index,
+ Float_t x,Float_t y,Float_t z,
+ Int_t status,Int_t &nseg,
+ Float_t &x1,Float_t &y1,Float_t &z1,
+ Float_t &dx1,Float_t &dy1,Float_t &dz1,
+ Int_t &flag){
+ // path length
+ static Float_t x0,y0,z0;
+
+ index = 0;
+ if ((status&0x0002)!=0){ // entering
+ x0 = x;
+ y0 = y;
+ z0 = z;
+ nseg = 0;
+ flag = 1;
+ }else{
+ x1 = x0;
+ y1 = y0;
+ z1 = z0;
+ dx1 = x-x1;
+ dy1 = y-y1;
+ dz1 = z-z1;
+ nseg++;
+ if ((status&0x0004)!=0) flag = 0; //exiting
+ if ((status&0x0001)!=0) flag = 2; // inside
+ else flag = 2; //inside ?
+ x0 = x;
+ y0 = y;
+ z0 = z;
+ } // end if
+}
+//___________________________________________________________________________
+Bool_t AliITSmodule::LineSegmentL(Int_t hitindex,Double_t &a,Double_t &b,
+ Double_t &c,Double_t &d,
+ Double_t &e,Double_t &f,Double_t &de){
+ // line segment
+ AliITShit *h1;
+ Double_t t;
+
+ if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE;
+
+ h1 = (AliITShit *) (fHitsM->At(hitindex));
+ if(h1->StatusEntering()){ // if track entering volume, get index for next
+ // step
+ return kFALSE;
+ } // end if StatusEntering()
+ // else stepping
+ de = h1->GetIonization();
+ h1->GetPositionL0(a,c,e,t);
+ h1->GetPositionL(b,d,f);
+ b = b - a;
+ d = d - c;
+ f = f - e;
+ return kTRUE;
+}
+//___________________________________________________________________________
+Bool_t AliITSmodule::LineSegmentG(Int_t hitindex,Double_t &a,Double_t &b,
+ Double_t &c,Double_t &d,
+ Double_t &e,Double_t &f,Double_t &de){
+ // line segment
+ AliITShit *h1;
+ Double_t t;
+
+ if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE;
+
+ h1 = (AliITShit *) (fHitsM->At(hitindex));
+ if(h1->StatusEntering()){ // if track entering volume, get index for next
+ // step
+ return kFALSE;
+ } // end if StatusEntering()
+ // else stepping
+ de = h1->GetIonization();
+ h1->GetPositionG0(a,c,e,t);
+ h1->GetPositionG(b,d,f);
+ b = b - a;
+ d = d - c;
+ f = f - e;
+ return kTRUE;
+}
+//___________________________________________________________________________
+Bool_t AliITSmodule::LineSegmentL(Int_t hitindex,Double_t &a,Double_t &b,
+ Double_t &c,Double_t &d,
+ Double_t &e,Double_t &f,
+ Double_t &de,Int_t &track){
+ // line segmente
+ AliITShit *h1;
+ Double_t t;
+
+ if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE;
+ h1 = (AliITShit *) (fHitsM->At(hitindex));
+ if(h1->StatusEntering()){ // if track entering volume, get index for next
+ // step
+ track = h1->GetTrack();
+ return kFALSE;
+ } // end if StatusEntering()
+ // else stepping
+ de = h1->GetIonization();
+ h1->GetPositionL0(a,c,e,t);
+ h1->GetPositionL(b,d,f);
+ b = b - a;
+ d = d - c;
+ f = f - e;
+ track = h1->GetTrack();
+ return kTRUE;
+}
//___________________________________________________________________________
-void AliITSmodule::Streamer(TBuffer &R__b){
- // Stream an object of class AliITSmodule.
-
- return;
-// This class is not to be written out to any file.
-// if (R__b.IsReading()) {
-// Version_t R__v = R__b.ReadVersion(); if (R__v) { }
-// TObject::Streamer(R__b);
-// R__b >> fITS;
-// R__b >> fIndex;
-// R__b >> fHitsM;
-// R__b >> fNhitsM;
-// R__b >> fIDigits;
-// R__b >> fNdigits;
-// R__b >> fIPoints;
-// R__b >> fNpoints;
-// } else {
-// R__b.WriteVersion(AliITSmodule::IsA());
-// TObject::Streamer(R__b);
-// R__b << fITS;
-// R__b << fIndex;
-// R__b << fHitsM;
-// R__b << fNhitsM;
-// R__b << fIDigits;
-// R__b << fNdigits;
-// R__b << fIPoints;
-// R__b << fNpoints;
-// }
+Bool_t AliITSmodule::LineSegmentG(Int_t hitindex,Double_t &a,Double_t &b,
+ Double_t &c,Double_t &d,
+ Double_t &e,Double_t &f,
+ Double_t &de,Int_t &track){
+ // line segment
+ AliITShit *h1;
+ Double_t t;
+
+ if(hitindex>= fHitsM->GetEntriesFast()) return kFALSE;
+
+ h1 = (AliITShit *) (fHitsM->At(hitindex));
+ if(h1->StatusEntering()){ // if track entering volume, get index for next
+ // step
+ track = h1->GetTrack();
+ return kFALSE;
+ } // end if StatusEntering()
+ // else stepping
+ de = h1->GetIonization();
+ h1->GetPositionG0(a,c,e,t);
+ h1->GetPositionG(b,d,f);
+ b = b - a;
+ d = d - c;
+ f = f - e;
+ track = h1->GetTrack();
+ return kTRUE;
}
//______________________________________________________________________
+Bool_t AliITSmodule::MedianHitG(AliITShit *h1,AliITShit *h2,
+ Float_t &x,Float_t &y,Float_t &z){
+ // Computes the mean hit location for a set of hits that make up a track
+ // passing through a volume. Returns kFALSE untill the the track leaves
+ // the volume.
+ // median hit
+ AliITSgeom *gm = fITS->GetITSgeom();
+ Float_t x1l=0.,y1l=0.,z1l=0.;
+ Float_t x2l=0.,y2l=0.,z2l=0.;
+ Float_t xMl,yMl=0,zMl;
+ Float_t l[3], g[3];
+
+ h1->GetPositionG(x1l,y1l,z1l);
+ h2->GetPositionG(x2l,y2l,z2l);
+
+ if((y2l*y1l)<0.) {
+ xMl = (-y1l / (y2l-y1l))*(x2l-x1l) + x1l;
+ zMl = (-y1l / (y2l-y1l))*(z2l-z1l) + z1l;
+ } else {
+ xMl = 0.5*(x1l+x2l);
+ zMl = 0.5*(z1l+z2l);
+ }
+
+ l[0] = xMl;
+ l[1] = yMl;
+ l[2] = zMl;
+ gm->LtoG(h1->GetModule(),l,g);
+ x = g[0];
+ y = g[1];
+ z = g[2];
+ return kTRUE;
+}
+//___________________________________________________________________________
+void AliITSmodule::MedianHitG(Int_t index,
+ Float_t hitx1,Float_t hity1,Float_t hitz1,
+ Float_t hitx2,Float_t hity2,Float_t hitz2,
+ Float_t &xMg, Float_t &yMg, Float_t &zMg){
+ // median hit
+ AliITSgeom *gm = fITS->GetITSgeom();
+ Float_t x1l,y1l,z1l;
+ Float_t x2l,y2l,z2l;
+ Float_t xMl,yMl=0,zMl;
+ Float_t l[3], g[3];
+
+ g[0] = hitx1;
+ g[1] = hity1;
+ g[2] = hitz1;
+ gm->GtoL(index,g,l);
+ x1l = l[0];
+ y1l = l[1];
+ z1l = l[2];
+
+ g[0] = hitx2;
+ g[1] = hity2;
+ g[2] = hitz2;
+ gm->GtoL(index,g,l);
+ x2l = l[0];
+ y2l = l[1];
+ z2l = l[2];
+
+ if((y2l*y1l)<0.) {
+ xMl = (-y1l / (y2l-y1l))*(x2l-x1l) + x1l;
+ zMl = (-y1l / (y2l-y1l))*(z2l-z1l) + z1l;
+ } else {
+ xMl = 0.5*(x1l+x2l);
+ zMl = 0.5*(z1l+z2l);
+ }
+
+ l[0] = xMl;
+ l[1] = yMl;
+ l[2] = zMl;
+ gm->LtoG(index,l,g);
+ xMg = g[0];
+ yMg = g[1];
+ zMg = g[2];
+}
+//___________________________________________________________________________
+Bool_t AliITSmodule::MedianHitL( AliITShit *itsHit1,
+ AliITShit *itsHit2,
+ Float_t &xMl, Float_t &yMl, Float_t &zMl){
+ // median hit
+ Float_t x1l,y1l,z1l;
+ Float_t x2l,y2l,z2l;
+
+ itsHit1->GetPositionL(x1l,y1l,z1l);
+ itsHit2->GetPositionL(x2l,y2l,z2l);
+
+ yMl = 0.0;
+ if((y2l*y1l)<0.) {
+ xMl = (-y1l / (y2l-y1l))*(x2l-x1l) + x1l;
+ zMl = (-y1l / (y2l-y1l))*(z2l-z1l) + z1l;
+ } else {
+ xMl = 0.5*(x1l+x2l);
+ zMl = 0.5*(z1l+z2l);
+ }
+ return kTRUE;
+}
+//___________________________________________________________________________
+void AliITSmodule::MedianHit(Int_t index,
+ Float_t xg,Float_t yg,Float_t zg,
+ Int_t status,
+ Float_t &xMg,Float_t &yMg,Float_t &zMg,
+ Int_t &flag){
+ // median hit
+ static Float_t x1,y1,z1;
+
+ if ((status&0x0002)!=0){ // entering
+ x1 = xg;
+ y1 = yg;
+ z1 = zg;
+ flag = 1;
+ } else if ((status&0x0004)!=0){ // exiting
+ MedianHitG(index,x1,y1,z1,xg,yg,zg,xMg,yMg,zMg);
+ flag = 0;
+ } // end if
+ else flag = 1;
+}
+//___________________________________________________________________________
+void AliITSmodule::GetID(Int_t &lay,Int_t &lad,Int_t &det){
+ // get ID
+ fITS->GetITSgeom()->GetModuleId(fIndex,lay,lad,det);
+ return ;
+}
+
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