G4ErrorSurfaceTrajState.hh

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//
//
//
// Class description:
//
// Represents a trajectory state on a surface.
// It can be represented by the 5 variables:
//      1/p, v', w', v, w
// where v'=dv/du and w'=dw/du in an orthonormal coordinate system
// with axis u, v and w.
 
// History:
//
// - Created:   P. Arce
// --------------------------------------------------------------------
 
#ifndef G4ErrorSurfaceTrajState_hh
#define G4ErrorSurfaceTrajState_hh
 
#include "globals.hh"
 
#include "G4ErrorTrajState.hh"
#include "G4ErrorSurfaceTrajParam.hh"
#include "G4ErrorFreeTrajState.hh"
 
#include "G4Point3D.hh"
#include "G4Vector3D.hh"
#include "G4Plane3D.hh"
 
class G4ErrorSurfaceTrajState : public G4ErrorTrajState
{
 public:  // with description
  G4ErrorSurfaceTrajState(const G4String& partType, const G4Point3D& pos,
                          const G4Vector3D& mom, const G4Plane3D& plane,
                          const G4ErrorTrajErr& errmat = G4ErrorTrajErr(5, 0));
  // Constructor by providing particle, position, momentum and
  // G4Plane3D surface
 
  G4ErrorSurfaceTrajState(const G4String& partType, const G4Point3D& pos,
                          const G4Vector3D& mom, const G4Vector3D& vecV,
                          const G4Vector3D& vecW,
                          const G4ErrorTrajErr& errmat = G4ErrorTrajErr(5, 0));
  // Constructor by providing particle, position, momentum and
  // two vectors on surface
 
  G4ErrorSurfaceTrajState(G4ErrorFreeTrajState& tpSC, const G4Plane3D& plane);
  // Constructor by providing G4ErrorFreeTrajState and G4Plane3D surface
 
  G4ErrorSurfaceTrajState(G4ErrorFreeTrajState& tpSC, const G4Vector3D& vecV,
                          const G4Vector3D& vecW, G4ErrorMatrix& transfM);
  // Constructor by providing G4ErrorFreeTrajState and two vectors on surface
 
  ~G4ErrorSurfaceTrajState() {}
  G4ErrorMatrix BuildErrorMatrix(G4ErrorFreeTrajState& tpSC,
                                 const G4Vector3D& vecV,
                                 const G4Vector3D& vecW);
  // Build the error matrix from a free state plus the vectors of the surface
 
  virtual void Dump(std::ostream& out = G4cout) const;
 
  friend std::ostream& operator<<(std::ostream&,
                                  const G4ErrorSurfaceTrajState& ts);
 
  // Set and Get methods
 
  G4ErrorSurfaceTrajParam GetParameters() const { return fTrajParam; }
  void SetParameters(const G4Point3D& pos, const G4Vector3D& mom,
                     const G4Vector3D& vecV, const G4Vector3D& vecW)
  {
    fPosition = pos;
    fMomentum = mom;
    fTrajParam.SetParameters(pos, mom, vecV, vecW);
  }
 
  void SetParameters(const G4Point3D& pos, const G4Vector3D& mom,
                     const G4Plane3D& plane)
  {
    fPosition = pos;
    fMomentum = mom;
    fTrajParam.SetParameters(pos, mom, plane);
  }
 
  G4Vector3D GetVectorV() const { return fTrajParam.GetVectorV(); }
 
  G4Vector3D GetVectorW() const { return fTrajParam.GetVectorW(); }
 
  virtual void SetPosition(const G4Point3D pos)
  {
    SetParameters(pos, fMomentum, GetVectorV(), GetVectorW());
  }
 
  virtual void SetMomentum(const G4Vector3D& mom)
  {
    SetParameters(fPosition, mom, GetVectorV(), GetVectorW());
  }
 
 private:
  void Init();
  // Define Trajectory State type and build charge
 
 private:
  G4ErrorSurfaceTrajParam fTrajParam;
};
 
#endif