Tracker.h

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#ifndef INCLUDE_EICSMEAR_SMEAR_TRACKER_H_
#define INCLUDE_EICSMEAR_SMEAR_TRACKER_H_
 
#include <Rtypes.h>  // For ClassDef
 
#include "eicsmear/smear/Distributor.h"
#include "eicsmear/smear/Smear.h"  // KinType
#include "eicsmear/smear/Smearer.h"
 
namespace erhic {
 
class VirtualParticle;
 
}  // namespace erhic
 
namespace Smear {
 
class ParticleMCS;
 
class Tracker : public Smearer {
 public:
  Tracker(double magneticField = 2., double nRadiationLengths = 0.01,
          double resolution = 0.001);
 
  virtual ~Tracker();
 
  virtual double Resolution(const erhic::VirtualParticle&) const;
 
  void Smear(const erhic::VirtualParticle&, ParticleMCS&);
 
  virtual double L(const erhic::VirtualParticle&) const = 0;
 
  virtual double LPrime(const erhic::VirtualParticle&) const = 0;
 
  virtual int NPoints(const erhic::VirtualParticle&) const = 0;
 
  virtual bool Accepts(const erhic::VirtualParticle&) const = 0;
 
  virtual double GetThetaMin() const = 0;
 
  virtual double GetThetaMax() const = 0;
 
  void SetVertexConstraint(bool constrain);
 
 protected:
  virtual double MultipleScatteringContribution(
    const erhic::VirtualParticle&) const;
 
  virtual double IntrinsicContribution(const erhic::VirtualParticle&) const;
 
  Int_t mFactor;  
  double mMagField;  
  double mNRadLengths;  
  double mSigmaRPhi;  
  Distributor Distribution;  
 
  ClassDef(Smear::Tracker, 1)
};
 
}  // namespace Smear
 
#endif  // INCLUDE_EICSMEAR_SMEAR_TRACKER_H_