ClosestApproachOnHelices.h

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#ifndef _ClosestApproachOnHelices_H_
#define _ClosestApproachOnHelices_H_
 
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include <utility>
 
class FreeTrajectoryState;
class TrajectoryStateOnSurface;
 
class ClosestApproachOnHelices {
public:
  ClosestApproachOnHelices() {}
 
  virtual ~ClosestApproachOnHelices() {}
 
  virtual bool calculate(const TrajectoryStateOnSurface& sta, const TrajectoryStateOnSurface& stb) = 0;
 
  virtual bool calculate(const FreeTrajectoryState& sta, const FreeTrajectoryState& stb) = 0;
 
  virtual bool status() const = 0;
 
  virtual std::pair<GlobalPoint, GlobalPoint> points() const = 0;
 
  virtual GlobalPoint crossingPoint() const = 0;
 
  virtual float distance() const = 0;
 
  virtual ClosestApproachOnHelices* clone() const = 0;
};
 
#endif