+
+
+AliITSgeomSSD::AliITSgeomSSD():
+TObject(),
+fName(),
+fTitle(),
+fMat(),
+fDx(0.0),
+fDy(0.0),
+fDz(0.0),
+fNp(0),
+fNn(0),
+fLowEdgeP(0),
+fLowEdgeN(0),
+fAngleP(0.0),
+fAngleN(0.0){
+// Default constructor
+ fNp = 0;
+ fNn = 0;
+ fLowEdgeP = 0;
+ fLowEdgeN = 0;
+ fAngleP = 0.0;
+ fAngleN = 0.0;
+}
+//----------------------------------------------------------------------
+AliITSgeomSSD::AliITSgeomSSD(const Float_t *box,Float_t ap,Float_t an,
+ Int_t np,Float_t *p,Int_t nn,Float_t *n):
+TObject(),
+fName(),
+fTitle(),
+fMat(),
+fDx(0.0),
+fDy(0.0),
+fDz(0.0),
+fNp(0),
+fNn(0),
+fLowEdgeP(0),
+fLowEdgeN(0),
+fAngleP(0.0),
+fAngleN(0.0){
+////////////////////////////////////////////////////////////////////////
+// Standard Constructor. *box={dx,dy,dz}, ap=anode angle, an=cathode angle,
+// nn= number of cathodes+1,*n= array of cathode low edges+highest edge,
+// np= number of anodes+1, *p= array of anode low edges+lighest edge.
+///////////////////////////////////////////////////////////////////////
+ fNp = 0;
+ fNn = 0;
+ fLowEdgeP = 0;
+ fLowEdgeN = 0;
+ fAngleP = 0.0;
+ fAngleN = 0.0;
+ ResetSSD(box,ap,an,np,p,nn,n);
+}
+//----------------------------------------------------------------------
+void AliITSgeomSSD::ResetSSD(const Float_t *box,Float_t ap,Float_t an,
+ Int_t np,Float_t *p,Int_t nn,Float_t *n){
+////////////////////////////////////////////////////////////////////////
+// Standard Filler. *box={dx,dy,dz}, ap=anode angle, an=cathode angle,
+// nn= number of cathodes+1,*n= array of cathode low edges+highest edge,
+// np= number of anodes+1, *p= array of anode low edges+lighest edge.
+///////////////////////////////////////////////////////////////////////
+ Int_t i;
+
+ fName = "ActiveSSD";
+ fTitle = "Active volume of SSD";
+ fMat = "SSD Si Det";
+ fDx = box[0];
+ fDy = box[1];
+ fDz = box[2];
+ if(fLowEdgeP!=0) delete fLowEdgeP;
+ if(fLowEdgeN!=0) delete fLowEdgeN;
+ fNp = np;
+ fNn = nn;
+ fAngleP = ap;
+ fAngleN = an;
+ fLowEdgeP = new Float_t[fNp];
+ fLowEdgeN = new Float_t[fNn];
+ for(i=0;i<fNp;i++) fLowEdgeP[i] = p[i];
+ for(i=0;i<fNn;i++) fLowEdgeN[i] = n[i];
+}
+//______________________________________________________________________
+AliITSgeomSSD::~AliITSgeomSSD(){
+ // Destructor.
+
+ if(fLowEdgeP) delete [] fLowEdgeP; fLowEdgeP = 0;
+ if(fLowEdgeN) delete [] fLowEdgeN; fLowEdgeN = 0;
+ fNp = 0;
+ fNn = 0;
+ fAngleP = 0.0;
+ fAngleN = 0.0;
+}
+//______________________________________________________________________
+AliITSgeomSSD::AliITSgeomSSD(const AliITSgeomSSD &source) : TObject(source),
+fName(source.fName),fTitle(source.fTitle),fMat(source.fMat),fDx(source.fDx),fDy(source.fDy),fDz(source.fDz),fNp(source.fNp),fNn(source.fNn),fLowEdgeP(0),fLowEdgeN(0),fAngleP(source.fAngleP),fAngleN(source.fAngleN){
+////////////////////////////////////////////////////////////////////////
+// copy constructor
+////////////////////////////////////////////////////////////////////////
+ Int_t i;
+
+ fLowEdgeP = new Float_t[fNp];
+ fLowEdgeN = new Float_t[fNn];
+ for(i=0;i<fNp;i++) this->fLowEdgeP[i] = source.fLowEdgeP[i];
+ for(i=0;i<fNn;i++) this->fLowEdgeN[i] = source.fLowEdgeN[i];
+ return;
+}
+
+AliITSgeomSSD& AliITSgeomSSD::operator=(const AliITSgeomSSD &source) {
+////////////////////////////////////////////////////////////////////////
+// assignment operator
+////////////////////////////////////////////////////////////////////////
+
+ this->~AliITSgeomSSD();
+ new(this) AliITSgeomSSD(source);
+ return *this;
+
+}
+//______________________________________________________________________
+void AliITSgeomSSD::Local2Det(Float_t x,Float_t z,Int_t &a,Int_t &c){
+ // Given a GEANT detector local coordinate, cm, this function returns
+ // the detector specific P and N side strip numbers.
+ // Inputs are:
+ // Float_t x Geant detector local x coordinate in cm
+ // Float_t z Geant detector local z coordinate in cm
+ // outputs are:
+ // Int_t &a Detector anode strip number (P side)
+ // Int_t &c Detector cathode strip number (N side)
+ Float_t d,b;
+ Int_t i;
+
+ // project on to bonding edges.
+ d = x*TMath::Cos(fAngleP)+z*TMath::Sin(fAngleP);
+ b = x*TMath::Cos(fAngleN)+z*TMath::Sin(fAngleN);
+ if(d<fLowEdgeP[0]) i=-1;
+ else for(i=0;i<fNp;i++){
+ if(fLowEdgeP[i]<d) break;
+ } // end for i
+ a = i;
+ if(b<fLowEdgeN[0]) i=-1;
+ else for(i=0;i<fNn;i++){
+ if(fLowEdgeN[i]<b) break;
+ } // end for i
+ c = i;
+ return;
+}
+//______________________________________________________________________
+void AliITSgeomSSD::Det2Local(Int_t a,Int_t c,Float_t &x,Float_t &z){
+// Float_t d,b;
+// Int_t i;
+ // use AliITSsegmentationSSD.
+
+ x=a;
+ z=c;
+ Error("Det2Locat","Use AliITSsegmentationSSD");
+ return;
+}
+//______________________________________________________________________
+void AliITSgeomSSD::Print(ostream *os) const {
+////////////////////////////////////////////////////////////////////////
+// Standard output format for this class.
+////////////////////////////////////////////////////////////////////////
+ Int_t i;
+#if defined __GNUC__
+#if __GNUC__ > 2
+ ios::fmtflags fmt;
+#else
+ Int_t fmt;
+#endif
+#else
+#if defined __ICC || defined __ECC || defined __xlC__
+ ios::fmtflags fmt;
+#else
+ Int_t fmt;
+#endif
+#endif
+
+ fmt = os->setf(ios::scientific); // set scientific floating point output
+ *os << "TBRIK" << " ";
+ *os << setprecision(16) << GetDx() << " ";
+ *os << setprecision(16) << GetDy() << " ";
+ *os << setprecision(16) << GetDz() << " ";
+ *os << fNp << " " << fNn << " ";
+ *os << setprecision(16) << fAngleP << " ";
+ *os << setprecision(16) << fAngleN << " ";
+ for(i=0;i<fNp;i++) *os << setprecision(16) << fLowEdgeP[i] << " ";
+ for(i=0;i<fNn;i++) *os << setprecision(16) << fLowEdgeN[i] << " ";
+ *os << endl;
+ os->flags(fmt); // reset back to old formating.
+ return;
+}
+//______________________________________________________________________
+void AliITSgeomSSD::Read(istream *is){
+////////////////////////////////////////////////////////////////////////
+// Standard input format for this class.
+////////////////////////////////////////////////////////////////////////
+ Int_t i;
+ char shp[20];
+
+ *is >> shp;
+ *is >> fDx >> fDy >> fDz;
+ *is >> fNp >> fNn;
+ *is >> fAngleP >> fAngleN;
+ if(fLowEdgeP !=0) delete fLowEdgeP;
+ if(fLowEdgeN !=0) delete fLowEdgeN;
+ fLowEdgeP = new Float_t[fNp];
+ fLowEdgeN = new Float_t[fNn];
+ for(i=0;i<fNp;i++) *is >> fLowEdgeP[i];
+ for(i=0;i<fNn;i++) *is >> fLowEdgeN[i];
+ return;
+}
+//----------------------------------------------------------------------
+ostream &operator<<(ostream &os,AliITSgeomSSD &p){
+////////////////////////////////////////////////////////////////////////
+// Standard output streaming function.
+////////////////////////////////////////////////////////////////////////
+
+ p.Print(&os);
+ return os;
+}
+//----------------------------------------------------------------------
+istream &operator>>(istream &is,AliITSgeomSSD &r){
+////////////////////////////////////////////////////////////////////////
+// Standard input streaming function.
+////////////////////////////////////////////////////////////////////////
+
+ r.Read(&is);
+ return is;
+}
+//======================================================================
+
+ClassImp(AliITSgeomSSD175)
+
+AliITSgeomSSD175::AliITSgeomSSD175() : AliITSgeomSSD(){
+////////////////////////////////////////////////////////////////////////
+// default constructor
+////////////////////////////////////////////////////////////////////////
+ const Float_t kDxyz[] ={3.6500,0.0150,2.000};//cm. (Geant 3.12 units)
+ // Size of sensitive detector area x,y(thickness),z
+ const Float_t kangle = 0.0175; // angle in rad. of anode and cathodes
+ const Float_t kpitch = 0.0095;// cm anode separation.
+ const Int_t kNstrips = 768; // number of anode or cathode strips.
+ Float_t *leA,*leC; // array of low edges anode and cathorde.
+ Int_t i;
+
+ leA = new Float_t[kNstrips+1];
+ leC = new Float_t[kNstrips+1];
+ leA[0] = -kDxyz[0];
+ leA[1] = -kpitch*(0.5*kNstrips-1);
+ leC[0] = kDxyz[0];
+ leC[1] = kpitch*(0.5*kNstrips-1);
+ for(i=1;i<kNstrips;i++){
+ leA[i+1] = leA[i] + kpitch;
+ leC[i+1] = leC[i] - kpitch;
+ } // end for i
+ leA[kNstrips] = kDxyz[0];
+ leC[kNstrips] = -kDxyz[0];
+ AliITSgeomSSD::ResetSSD(kDxyz,kangle,-kangle,
+ kNstrips+1,leA,kNstrips+1,leC);
+ delete leA;
+ delete leC;
+}
+//________________________________________________________________________
+ostream &operator<<(ostream &os,AliITSgeomSSD175 &p){
+////////////////////////////////////////////////////////////////////////
+// Standard output streaming function.
+////////////////////////////////////////////////////////////////////////
+
+ p.Print(&os);
+ return os;