G4VTrajectory.hh

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//
// G4VTrajectory
//
// Class description:
//
// This class is the abstract base class representing a trajectory of 
// a particle being tracked.
// Its concrete class includes information of:
//     1) List of trajectory points composing the trajectory;
//     2) Static information of the particle which generated the trajectory;
//     3) Track ID and parent particle ID of the trajectory.
 
// Contact:
//   Questions and comments to this code should be sent to
//     Katsuya Amako  (e-mail: Katsuya.Amako@kek.jp)
//     Makoto  Asai   (e-mail: asai@slac.stanford.edu)
//     Takashi Sasaki (e-mail: Takashi.Sasaki@kek.jp)
// --------------------------------------------------------------------
#ifndef G4VTrajectory_hh
#define G4VTrajectory_hh 1
 
#include <vector>
#include <map>
 
#include "globals.hh"
#include "G4ThreeVector.hh"
 
class G4Step;
class G4VTrajectoryPoint;
class G4AttDef;
class G4AttValue;
 
class G4VTrajectory
{
  public:
 
    G4VTrajectory();
    virtual ~G4VTrajectory();
      // Constructor/Destrcutor
 
    G4bool operator == (const G4VTrajectory& right) const;
      // Equality operator
 
    virtual G4int GetTrackID() const = 0;
    virtual G4int GetParentID() const = 0;
    virtual G4String GetParticleName() const = 0;
    virtual G4double GetCharge() const = 0;
      // Accessors
 
    virtual G4int GetPDGEncoding() const = 0;
      // Charge is that of G4DynamicParticle
    virtual G4ThreeVector GetInitialMomentum() const = 0;
      // Zero will be returned if the particle does not have PDG code.
      // Momentum at the origin of the track in global coordinate system
 
    virtual G4int GetPointEntries() const = 0;
      // Returns the number of trajectory points
    virtual G4VTrajectoryPoint* GetPoint(G4int i) const = 0;
      // Returns i-th trajectory point
    virtual void ShowTrajectory(std::ostream& os=G4cout) const;
      // Converts attributes in trajectory (and trajectory point if
      // needed) to ostream. A default implementation in this base class
      // may be used or may be overridden in the concrete class. Note:
      // the user needs to follow with new-line or end-of-string,
      // depending on the nature of os
    virtual void DrawTrajectory() const;
      // Draw the trajectory. A default implementation in this base
      // class may be used or may be overridden in the concrete class
    virtual const std::map<G4String,G4AttDef>* GetAttDefs() const
      { return nullptr; }
      // If implemented by a derived class, returns a pointer to a map of
      // attribute definitions for the attribute values below. The user
      // must test the validity of this pointer. See G4Trajectory for an
      // example of a concrete implementation of this method
    virtual std::vector<G4AttValue>* CreateAttValues() const
      { return nullptr; }
      // If implemented by a derived class, returns a pointer to a list
      // of attribute values suitable, e.g., for picking. Each must
      // refer to an attribute definition in the above map; its name is
      // the key. The user must test the validity of this pointer (it
      // must be non-zero and conform to the G4AttDefs, which may be
      // checked with G4AttCheck) and delete the list after use. See
      // G4Trajectory for an example of a concrete implementation of this
      // method and G4VTrajectory::ShowTrajectory for an example of its use.
 
    virtual void AppendStep(const G4Step* aStep) = 0;
    virtual void MergeTrajectory(G4VTrajectory* secondTrajectory) = 0;
      // Methods invoked exclusively by G4TrackingManager
};
 
#endif