- AliITSQASPDDataMakerRec.cxx

[u/mrichter/AliRoot.git] / ITS / AliITSsimulationSPD.h

#ifndef ALIITSSIMULATIONSPD_H
#define ALIITSSIMULATIONSPD_H

/* Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id$ */

////////////////////////////////////////////////////////////
// Simulation class for SPD                               //
////////////////////////////////////////////////////////////

#include "TObjArray.h"
#include "AliITSsimulation.h"
#include "AliITSsegmentationSPD.h"

class TH1F;
class AliITSmodule;
//class AliITSresponseSPD;

//-------------------------------------------------------------------

class AliITSsimulationSPD : public AliITSsimulation {
 public:
    AliITSsimulationSPD();
    //    AliITSsimulationSPD(AliITSsegmentation *seg,AliITSCalibration *res);
    AliITSsimulationSPD(AliITSDetTypeSim *dettyp);
    virtual ~AliITSsimulationSPD();
    // copy constructor
    AliITSsimulationSPD(const AliITSsimulationSPD &source); 
     // ass. operator
    AliITSsimulationSPD& operator=(const AliITSsimulationSPD &s);
    //    virtual AliITSsimulation& operator=(const AliITSsimulation &source);
    // Initilizes the variables
    void Init();

    // General User calling routines
    // Initilize simulation for a specific event and module
    void InitSimulationModule(Int_t module, Int_t event);
    // Finish and write S Digitization
    void FinishSDigitiseModule();
    // From hits to Digits, without creating SDigits
    void DigitiseModule(AliITSmodule *mod,Int_t,Int_t);

    // More or less Internal Routines
    // Create S Digits from specific module
    void SDigitiseModule(AliITSmodule *mod, Int_t mask, Int_t event);
    // Write S Digits to the tree of SDigits.
    void WriteSDigits();
    // fill pList from hits, charge sharing, diffusion, coupling
    void HitToSDigit(AliITSmodule *mod);
    // fill pList from hits, charge sharing, diffusion, coupling  (faster method optimized by Bjorne)
    void HitToSDigitFast(AliITSmodule *mod);
    // Removes dead pixels from pList
    void RemoveDeadPixels(AliITSmodule *mod);
    // Take pList of signals and apply noise... create Digits
    void FrompListToDigits();
    // This set the Lorentz drift of Electrons and Holes: by deafult equal weights to Electrons and Holes
    void SetLorentzDrift(Bool_t b=kFALSE)
         {fLorentz=b; if(fLorentz) SetTanLorAngle();};
    // This function set the relative contribution between holes and electrons: use  0<=WeightHole<=1
    Bool_t SetTanLorAngle(Double_t WeightHole=0.5);
    // Getter for the Lorentz angle
    Double_t GetTanLorAngle(){return fTanLorAng;};
    //
    void CreateHistograms();
    void FillHistograms(Int_t ix,Int_t iz,Double_t v=1.0);
    void ResetHistograms();
    TH1F* GetHistogram(Int_t i){return (TH1F*)(fHis->At(i));}// get histogram
    TObjArray*  GetHistArray() {return fHis;}// get hist array
    TString& GetHistName(){return fSPDname;}
    void SetHistName(TString &n){fSPDname = n;}
    //
    // For backwards compatibility
    void SDigitsToDigits(){ FinishSDigitiseModule();};
    void HitToDigit(AliITSmodule *mod){
        // Standard interface to DigitiseModule  Inputs: AliITSmodule *mod  Pointer to this module
        DigitiseModule(mod,GetModuleNumber(),0);};

 private:
    void SpreadCharge(Double_t x0,Double_t z0,Int_t ix0,Int_t iz0,
		      Double_t el,Double_t sig,Double_t ld,Int_t t,Int_t hi);
    void SpreadChargeAsym(Double_t x0,Double_t z0,Int_t ix0,Int_t iz0,
                      Double_t el,Double_t sigx,Double_t sigz,Double_t ld,Int_t t,Int_t hi);
    void UpdateMapSignal(Int_t ix,Int_t iz,Int_t trk,Int_t ht,Double_t signal){
        //  This function adds a signal to the pList from the pList class
        //  Inputs: iz column number  ix row number  trk track number  ht hit number  signal signal strength
        GetMap()->AddSignal(iz,ix,trk,ht,GetModuleNumber(),signal);};
    void UpdateMapNoise(Int_t ix,Int_t iz,Float_t noise){
        //  This function adds noise to data in the MapA2 as well as the pList
        //  Inputs:  iz column number  ix row number  noise electronic noise generated by FrompListToDigits
        GetMap()->AddNoise(iz,ix,GetModuleNumber(),noise);}
    // Get a pointer to the segmentation object
    virtual AliITSsegmentation* GetSegmentationModel(Int_t /*dt*/){return fDetType->GetSegmentationModel(0);}
    // set pointer to segmentation objec
    virtual void SetSegmentationModel(Int_t /*dt*/, AliITSsegmentation *seg){fDetType->SetSegmentationModel(0,seg);}
    // Bari-Salerno Coupling parameters
    // "New" coupling routine  Tiziano Virgili
    void SetCoupling(Int_t col,Int_t row,Int_t ntrack,Int_t idhit);
    // "Old" coupling routine  Rocco Caliandro
    void SetCouplingOld(Int_t col, Int_t row,Int_t ntrack,Int_t idhit);
    // Getters for data kept in fSegmentation and fResponse.
    // Returns the Threshold in electrons
    Double_t GetThreshold(){
      Double_t th,sig;AliITSSimuParam* simpar = fDetType->GetSimuParam(); 
        simpar->SPDThresholds(GetModuleNumber(),th,sig);return th;}; 
    // Returns the couplings Columb and Row.
    void GetCouplings(Double_t &cc,Double_t &cr){
      AliITSSimuParam* simpar = fDetType->GetSimuParam();
      simpar->GetSPDCouplingParam(cc,cr);};
    // Returns the number of pixels in x
    Int_t GetNPixelsX(){return GetSegmentationModel(0)->Npx();};
    // Returns the number of pixels in z
    Int_t GetNPixelsZ(){return GetSegmentationModel(0)->Npz();};

    TObjArray    *fHis;          //! just in case for histogramming
    TString       fSPDname;      //! Histogram name
    Int_t         fCoupling;     // Sets the coupling to be used.
                                 // ==1 use SetCoupling, ==2 use SetCouplingOld
    Bool_t        fLorentz;      // kTRUE if Lorentz drift has been allowed 
    Double_t      fTanLorAng;    //! Tangent of the Lorentz Angle (weighted average for hole and electrons)
    ClassDef(AliITSsimulationSPD,3)  // Simulation of SPD clusters
};
#endif