/data/refman/pasoursint/CMSSW_5_3_1/src/SimTracker/SiStripDigitizer/interface/SiHitDigitizer.h

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#ifndef _TRACKER_SiHitDigitizer_H_
#define _TRACKER_SiHitDigitizer_H_
 
#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "Geometry/TrackerGeometryBuilder/interface/StripGeomDetUnit.h"
#include "Geometry/CommonDetUnit/interface/GeomDetUnit.h"
#include "Geometry/CommonDetUnit/interface/GeomDetType.h"
#include "SimDataFormats/TrackingHit/interface/PSimHit.h"
#include "SimTracker/SiStripDigitizer/interface/SiChargeCollectionDrifter.h"
#include "SimTracker/SiStripDigitizer/interface/SiChargeDivider.h"
#include "SimTracker/SiStripDigitizer/interface/SiInduceChargeOnStrips.h"
#include "SimTracker/SiStripDigitizer/interface/SiPileUpSignals.h"

#include "SimGeneral/HepPDTRecord/interface/ParticleDataTable.h"

#include <map>

namespace CLHEP {
  class HepRandomEngine;
}

class SiStripDetType;
class SiHitDigitizer {
 public:

  SiHitDigitizer(const edm::ParameterSet& conf,CLHEP::HepRandomEngine&);

  ~SiHitDigitizer();

  void setChargeDivider(SiChargeDivider* cd) {
    if (theSiChargeDivider) delete theSiChargeDivider;
    theSiChargeDivider = cd;
  }

  void setChargeCollectionDrifter(SiChargeCollectionDrifter* cd) {
    if (theSiChargeCollectionDrifter) delete theSiChargeCollectionDrifter;
    theSiChargeCollectionDrifter = cd;
  }

  void setInduceChargeOnStrips(SiInduceChargeOnStrips* cd) {
    if (theSiInduceChargeOnStrips) delete theSiInduceChargeOnStrips;
    theSiInduceChargeOnStrips = cd;
  }
  
  void setParticleDataTable(const ParticleDataTable * pdt) { 
    theSiChargeDivider->setParticleDataTable(pdt); 
  }

  void processHit(const PSimHit*, const StripGeomDetUnit&, GlobalVector,float,
                  std::vector<double>&, size_t&, size_t&);
  
 private:
  SiChargeDivider* theSiChargeDivider;
  SiChargeCollectionDrifter* theSiChargeCollectionDrifter;
  SiInduceChargeOnStrips* theSiInduceChargeOnStrips;
  edm::ParameterSet conf_;
  CLHEP::HepRandomEngine& rndEngine;
  double depletionVoltage;
  double appliedVoltage;
  double chargeMobility;
  double temperature;
  bool noDiffusion;
  double chargeDistributionRMS;
  double gevperelectron;
  typedef GloballyPositioned<double> Frame;
  
  LocalVector DriftDirection(const StripGeomDetUnit* _detp, GlobalVector _bfield, float langle) {
    LocalVector Bfield=Frame(_detp->surface().position(),_detp->surface().rotation()).toLocal(_bfield);
    return LocalVector(-langle * Bfield.y(),langle * Bfield.x(),1.);
  }

};

#endif