// Simple four-vector class
// Glen Cowan, RHUL Physics Dept., 4 December 2001.

#ifndef FOURVECTOR_H
#define FOURVECTOR_H

#include "ThreeVector.h"

class FourVector {
public:
  FourVector (float, float, float, float);
  FourVector ();
  float x();
  float y();
  float z();
  float t();
  float m();
  void setX(float);
  void setY(float);
  void setZ(float);
  void setT(float);
  FourVector operator+ (FourVector);
  FourVector operator- (FourVector);
  float operator* (FourVector);
  ThreeVector betaGamma();
  ThreeVector space();
private:
  float xVal;
  float yVal;
  float zVal;
  float tVal;
};

// Related non-member functions

FourVector boostVector(FourVector, ThreeVector);

#endif