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TPoint2D Class Reference

A class to represent a point in 2D. More...

#include <TPoint2D.h>

List of all members.

Public Member Functions

double cross (const TPoint2D &) const
double cross (const TPoint2D &) const
double dot (const TPoint2D &) const
double dot (const TPoint2D &) const
double mag (void) const
double mag (void) const
double mag2 (void) const
double mag2 (void) const
TPoint2D operator+ (const TPoint2D &) const
TPoint2D operator+ (const TPoint2D &) const
TPoint2D operator- () const
TPoint2D operator- (const TPoint2D &) const
TPoint2D operator- () const
TPoint2D operator- (const TPoint2D &) const
bool operator== (const TPoint2D &) const
bool operator== (const TPoint2D &) const
double phi (void) const
double phi (void) const
 TPoint2D (const HepVector3D &)
 TPoint2D (const HepPoint3D &)
 TPoint2D (double, double)
 TPoint2D ()
 Constructors.
 TPoint2D (const HepVector3D &)
 TPoint2D (const HepPoint3D &)
 TPoint2D (double, double)
 TPoint2D ()
 Constructors.
TPoint2D unit (void) const
TPoint2D unit (void) const
double x (double)
double x (void) const
double x (double)
double x (void) const
double y (double)
double y (void) const
double y (double)
double y (void) const
virtual ~TPoint2D ()
 Destructor.
virtual ~TPoint2D ()
 Destructor.

Private Attributes

double _p [2]

Detailed Description

A class to represent a point in 2D.

Constructor & Destructor Documentation

TPoint2D::TPoint2D (   ) 
 

Constructors. 

00019                    {
00020     _p[0] = 0.;
00021     _p[1] = 0.;
00022 }

TPoint2D::TPoint2D (  double  ,
double 
) 
  

00024                                      {
00025     _p[0] = x;
00026     _p[1] = y;
00027 }

TPoint2D::TPoint2D (  const HepPoint3D &   ) 
  

00029                                        {
00030     _p[0] = a.x();
00031     _p[1] = a.y();
00032 }

TPoint2D::TPoint2D (  const HepVector3D &   ) 
  

00034                                         {
00035     _p[0] = a.x();
00036     _p[1] = a.y();
00037 }

TPoint2D::~TPoint2D (   )  [virtual]
 

Destructor. 

00039                     {
00040 }

TPoint2D::TPoint2D (   ) 
 

Constructors.

TPoint2D::TPoint2D (  double  ,
double 
) 
 

TPoint2D::TPoint2D (  const HepPoint3D &   ) 
 

TPoint2D::TPoint2D (  const HepVector3D &   ) 
 

virtual TPoint2D::~TPoint2D (   )  [virtual]
 

Destructor.

Member Function Documentation

double TPoint2D::cross (  const TPoint2D &   )  const
 

double TPoint2D::cross (  const TPoint2D &   )  const [inline]
  

00139                                         {
00140     return _p[0] * a.y() - a.x() * _p[1];
00141 }

double TPoint2D::dot (  const TPoint2D &   )  const
 

double TPoint2D::dot (  const TPoint2D &   )  const [inline]
  

00133                                       {
00134     return _p[0] * a.x() + _p[1] * a.y();
00135 }

double TPoint2D::mag (  void   )  const
 

double TPoint2D::mag (  void   )  const [inline]
  

00112                         {
00113     return sqrt(_p[0] * _p[0] + _p[1] * _p[1]);
00114 }

double TPoint2D::mag2 (  void   )  const
 

double TPoint2D::mag2 (  void   )  const [inline]
  

00118                          {
00119     return _p[0] * _p[0] + _p[1] * _p[1];
00120 }

TPoint2D TPoint2D::operator+ (  const TPoint2D &   )  const
 

TPoint2D TPoint2D::operator+ (  const TPoint2D &   )  const [inline]
  

00145                                               {
00146     return TPoint2D(_p[0] + a.x(), _p[1] + a.y());
00147 }

TPoint2D TPoint2D::operator- (   )  const
 

TPoint2D TPoint2D::operator- (  const TPoint2D &   )  const
 

TPoint2D TPoint2D::operator- (   )  const [inline]
  

00157                             {
00158     return TPoint2D(- _p[0], - _p[1]);
00159 }

TPoint2D TPoint2D::operator- (  const TPoint2D &   )  const [inline]
  

00151                                               {
00152     return TPoint2D(_p[0] - a.x(), _p[1] - a.y());
00153 }

bool TPoint2D::operator== (  const TPoint2D &   )  const
 

bool TPoint2D::operator== (  const TPoint2D &   )  const [inline]
  

00163                                                {
00164     if (a.x() == _p[0] && a.y() == _p[1]) return true;
00165     return false;
00166 }

double TPoint2D::phi (  void   )  const
 

double TPoint2D::phi (  void   )  const [inline]
  

00124                         {
00125     if (_p[0] == 0.0 && _p[1] == 0.0) return 0.;
00126     double a = atan2(_p[1], _p[0]);
00127     if (a > 0) return a;
00128     return a + 2. * M_PI;
00129 }

TPoint2D TPoint2D::unit (  void   )  const
 

TPoint2D TPoint2D::unit (  void   )  const [inline]
  

00170                          {
00171     double sum2 = _p[0] * _p[0] + _p[1] * _p[1];
00172     if (sum2 == 0.) return TPoint2D(0., 0.);
00173     double sum = sqrt(sum2);
00174     return TPoint2D(_p[0] / sum, _p[1] / sum);
00175 }

double TPoint2D::x (  double   ) 
 

double TPoint2D::x (  void   )  const
 

double TPoint2D::x (  double   )  [inline]
  

00100                     {
00101     return _p[0] = a;
00102 }

double TPoint2D::x (  void   )  const [inline]
  

00088                       {
00089     return _p[0];
00090 }

double TPoint2D::y (  double   ) 
 

double TPoint2D::y (  void   )  const
 

double TPoint2D::y (  double   )  [inline]
  

00106                     {
00107     return _p[1] = a;
00108 }

double TPoint2D::y (  void   )  const [inline]
  

00094                       {
00095     return _p[1];
00096 }

Member Data Documentation

double TPoint2D::_p [private]
 

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