ThreeVector Class Reference

Public Member Functions
	ThreeVector (double px_, double py_, double pz_)
double	getPx () const
double	getPy () const
double	getPz () const
double	getX () const
double	getY () const
double	getZ () const
double	getP2 () const
double	getP () const
double	getMag () const
double	getPt2 () const
double	getPt () const
double	getR () const
double	getPhi () const
double	getTheta () const
double	getEta () const
double	getComponent (int i) const
ThreeVector &	setValues (double px_, double py_, double pz_)
ThreeVector &	operator+= (const ThreeVector &rhs)
ThreeVector &	operator-= (const ThreeVector &rhs)
ThreeVector &	operator*= (double rhs)

Private Attributes
double	px
double	py
double	pz

Detailed Description

Definition at line 31 of file ThreeVector.h.

Constructor & Destructor Documentation

ThreeVector() [1/2]

ThreeVector ( )

inline

Definition at line 67 of file ThreeVector.h.

      : px(0), py(0), pz(0)
    {}

ThreeVector() [2/2]

ThreeVector ( double  px_, double  py_, double  pz_  )

inline

Definition at line 71 of file ThreeVector.h.

      : px(px_), py(py_), pz(pz_)
    {}

Member Function Documentation

getComponent()

double getComponent ( int  i ) const

inline

Definition at line 94 of file ThreeVector.h.

    {
      switch (i) {
        case 0: return getPx();
        case 1: return getPy();
        case 2: return getPz();
      }
      return NAN; // not-a-number, defined in cmath
    }

getEta()

double getEta ( ) const

inline

Definition at line 92 of file ThreeVector.h.

{ return -std::log(std::tan(0.5 * getTheta())); }

getMag()

double getMag ( ) const

inline

Definition at line 88 of file ThreeVector.h.

{ return std::sqrt(getP2()); }

getP()

double getP ( ) const

inline

Definition at line 87 of file ThreeVector.h.

{ return std::sqrt(getP2()); }

getP2()

double getP2 ( ) const

inline

Definition at line 86 of file ThreeVector.h.

{ return px * px + py * py + pz * pz; }

getPhi()

double getPhi ( ) const

inline

Definition at line 90 of file ThreeVector.h.

{ return std::atan2(py, px); }

getPt()

double getPt ( ) const

inline

Definition at line 83 of file ThreeVector.h.

{ return std::sqrt(getPt2()); }

getPt2()

double getPt2 ( ) const

inline

Definition at line 82 of file ThreeVector.h.

{ return px * px + py * py; }

getPx()

double getPx ( ) const

inline

Definition at line 75 of file ThreeVector.h.

{ return px; }

getPy()

double getPy ( ) const

inline

Definition at line 76 of file ThreeVector.h.

{ return py; }

getPz()

double getPz ( ) const

inline

Definition at line 77 of file ThreeVector.h.

{ return pz; }

getR()

double getR ( ) const

inline

Definition at line 84 of file ThreeVector.h.

{ return std::sqrt(getPt2()); }

getTheta()

double getTheta ( ) const

inline

Definition at line 91 of file ThreeVector.h.

{ return std::atan2(getPt(), pz); }

getX()

double getX ( ) const

inline

Definition at line 78 of file ThreeVector.h.

{ return px; }

getY()

double getY ( ) const

inline

Definition at line 79 of file ThreeVector.h.

{ return py; }

getZ()

double getZ ( ) const

inline

Definition at line 80 of file ThreeVector.h.

{ return pz; }

operator*=()

ThreeVector & operator*= ( double  rhs )

inline

Definition at line 129 of file ThreeVector.h.

    {
      px *= rhs;
      py *= rhs;
      pz *= rhs;
      return *this;
    }

operator+=()

ThreeVector & operator+= ( const ThreeVector &  rhs )

inline

Definition at line 113 of file ThreeVector.h.

    {
      px += rhs.px;
      py += rhs.py;
      pz += rhs.pz;
      return *this;
    }

operator-=()

ThreeVector & operator-= ( const ThreeVector &  rhs )

inline

Definition at line 121 of file ThreeVector.h.

    {
      px -= rhs.px;
      py -= rhs.py;
      pz -= rhs.pz;
      return *this;
    }

setValues()

ThreeVector & setValues ( double  px_, double  py_, double  pz_  )

inline

Definition at line 104 of file ThreeVector.h.

    {
      px = px_;
      py = py_;
      pz = pz_;
      return *this;
    }

Member Data Documentation

px

double px

private

Definition at line 64 of file ThreeVector.h.

py

double py

private

Definition at line 64 of file ThreeVector.h.

pz

double pz

private

Definition at line 64 of file ThreeVector.h.

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The documentation for this class was generated from the following file:

• analysis/OrcaKinFit/include/ThreeVector.h