G4INCLIntersection.hh

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//
// INCL++ intra-nuclear cascade model
// Pekka Kaitaniemi, CEA and Helsinki Institute of Physics
// Davide Mancusi, CEA
// Alain Boudard, CEA
// Sylvie Leray, CEA
// Joseph Cugnon, University of Liege
//
#define INCLXX_IN_GEANT4_MODE 1

#include "globals.hh"

#ifndef G4INCLINTERSECTION_HH
#define G4INCLINTERSECTION_HH 1

#include "G4INCLThreeVector.hh"
#include <utility>

namespace G4INCL {
  struct Intersection {
    Intersection(const G4bool e, const G4double t, const ThreeVector &p) :
      exists(e), time(t), position(p) {}
    G4bool exists;
    G4double time;
    ThreeVector position;
  };

  class IntersectionFactory {
    public:
      static inline Intersection getEarlierTrajectoryIntersection(const ThreeVector &x0, const ThreeVector &p, const G4double r) {
        return getTrajectoryIntersection(x0, p, r, true);
      }
      static inline Intersection getLaterTrajectoryIntersection(const ThreeVector &x0, const ThreeVector &p, const G4double r) {
        return getTrajectoryIntersection(x0, p, r, false);
      }
      static inline std::pair<Intersection,Intersection> getTrajectoryIntersections(const ThreeVector &x0, const ThreeVector &p, const G4double r) {
        return std::make_pair(
            getTrajectoryIntersection(x0, p, r, true),
            getTrajectoryIntersection(x0, p, r, false)
            );
      }
    private:
      static Intersection getTrajectoryIntersection(const ThreeVector &x0, const ThreeVector &p, const G4double r, const G4bool earliest);
  };
}

#endif /* G4INCLINTERSECTION_HH */