Data structure for vector in two dimensions. More...

#include <JVector2D.hh>

Inheritance diagram for JGEOMETRY2D::JVector2D:

Public Member Functions
	JVector2D ()
	Default constructor. More...

	JVector2D (const double x, const double y)
	Constructor. More...

double	getX () const
	Get x position. More...

double	getY () const
	Get y position. More...

JVector2D &	negate ()
	Negate vector. More...

JVector2D &	add (const JVector2D &vector)
	Add vector. More...

JVector2D &	sub (const JVector2D &vector)
	Subtract vector. More...

JVector2D &	mul (const double factor)
	Scale vector. More...

JVector2D &	div (const double factor)
	Scale vector. More...

JVector2D &	transform (const JMatrix2D &T)
	Transform. More...

bool	equals (const JVector2D &vector, const double precision=std::numeric_limits< double >::min()) const
	Check equality. More...

double	getLengthSquared () const
	Get length squared. More...

double	getLength () const
	Get length. More...

double	getDistanceSquared (const JVector2D &point) const
	Get squared of distance to point. More...

double	getDistance (const JVector2D &point) const
	Get distance to point. More...

double	getDot (const JVector2D &point) const
	Get dot product. More...

double	getPerpDot (const JVector2D &point) const
	Get perpendicular dot product. More...

JFirst_t &	mul (const JSecond_t &object)
	Multiply with object. More...

Protected Attributes
double	__x

double	__y

Detailed Description

Data structure for vector in two dimensions.

This class implements the JMATH::JMath interface.

Definition at line 32 of file JVector2D.hh.

Constructor & Destructor Documentation

JGEOMETRY2D::JVector2D::JVector2D ( )

inline

Default constructor.

Definition at line 39 of file JVector2D.hh.

                 :
       __x(0.0),
       __y(0.0)
     {}

JGEOMETRY2D::JVector2D::JVector2D	(	const double	x,
		const double	y
	)

inline

Constructor.

Parameters

x	x value
y	y value

Definition at line 51 of file JVector2D.hh.

                               :
       __x(x),
       __y(y)
     {}

Member Function Documentation

double JGEOMETRY2D::JVector2D::getX ( ) const

inline

Get x position.

Returns: x position

Definition at line 63 of file JVector2D.hh.

     { 
       return __x;
     }

double JGEOMETRY2D::JVector2D::getY ( ) const

inline

Get y position.

Returns: y position

Definition at line 74 of file JVector2D.hh.

     { 
       return __y;
     }

JVector2D& JGEOMETRY2D::JVector2D::negate ( )

inline

Negate vector.

Returns: this vector

Definition at line 85 of file JVector2D.hh.

     {
       __x = -__x;
       __y = -__y;
 
       return *this;
     }

JVector2D& JGEOMETRY2D::JVector2D::add ( const JVector2D & vector )

inline

Add vector.

Parameters

vector vector

Returns: this vector

Definition at line 100 of file JVector2D.hh.

     {
       __x += vector.getX();
       __y += vector.getY();
 
       return *this;
     }

JVector2D& JGEOMETRY2D::JVector2D::sub ( const JVector2D & vector )

inline

Subtract vector.

Parameters

vector vector

Returns: this vector

Definition at line 115 of file JVector2D.hh.

     {
       __x -= vector.getX();
       __y -= vector.getY();
 
       return *this;
     }

JVector2D& JGEOMETRY2D::JVector2D::mul ( const double factor )

inline

Scale vector.

Parameters

factor multiplication factor

Returns: this vector

Definition at line 130 of file JVector2D.hh.

     {
       __x *= factor;
       __y *= factor;
 
       return *this;
     }

JVector2D& JGEOMETRY2D::JVector2D::div ( const double factor )

inline

Scale vector.

Parameters

factor division factor

Returns: this vector

Definition at line 145 of file JVector2D.hh.

     {
       __x /= factor;
       __y /= factor;
 
       return *this;
     }

JVector2D& JGEOMETRY2D::JVector2D::transform ( const JMatrix2D & T )

inline

Transform.

Parameters

T matrix

Returns: this vector

Definition at line 160 of file JVector2D.hh.

     {
       T.transform(__x, __y);
 
       return *this;
     }

bool JGEOMETRY2D::JVector2D::equals	(	const JVector2D &	vector,
		const double	precision = `std::numeric_limits<double>::min()`
	)		const

inline

Check equality.

Parameters

vector	vector
precision	precision

Returns: true if vectors are equal; else false

Definition at line 175 of file JVector2D.hh.

     {
       return (fabs(getX() - vector.getX()) <= precision &&
               fabs(getY() - vector.getY()) <= precision);
     }

double JGEOMETRY2D::JVector2D::getLengthSquared ( ) const

inline

Get length squared.

Returns: square of length

Definition at line 188 of file JVector2D.hh.

     { 
       return getX()*getX() + getY()*getY();
     }

double JGEOMETRY2D::JVector2D::getLength ( ) const

inline

Get length.

Returns: length

Definition at line 199 of file JVector2D.hh.

     { 
       return sqrt(getLengthSquared());
     }

double JGEOMETRY2D::JVector2D::getDistanceSquared ( const JVector2D & point ) const

inline

Get squared of distance to point.

Parameters

point point

Returns: square of distance

Definition at line 211 of file JVector2D.hh.

     {
       return JVector2D(point).sub(*this).getLengthSquared();
     }

double JGEOMETRY2D::JVector2D::getDistance ( const JVector2D & point ) const

inline

Get distance to point.

Parameters

point point

Returns: distance

Definition at line 223 of file JVector2D.hh.

     {
       return sqrt(getDistanceSquared(point));
     }

double JGEOMETRY2D::JVector2D::getDot ( const JVector2D & point ) const

inline

Get dot product.

Parameters

point vector

Returns: dot product

Definition at line 235 of file JVector2D.hh.

     {
       return
         getX() * point.getX() + 
         getY() * point.getY();
     }

double JGEOMETRY2D::JVector2D::getPerpDot ( const JVector2D & point ) const

inline

Get perpendicular dot product.

Parameters

point vector

Returns: perpendicular dot product

Definition at line 249 of file JVector2D.hh.

     {
       return
         getX() * point.getY() - 
         getY() * point.getX();
     }

template<class JFirst_t, class JSecond_t = JNullType>

JFirst_t& JMATH::JMath< JFirst_t, JSecond_t >::mul ( const JSecond_t & object )

inlineinherited

Multiply with object.

Parameters

object object

Returns: result object

Definition at line 357 of file JMath.hh.

     {
       return static_cast<JFirst_t&>(*this) = JCalculator<JFirst_t>::calculator.mul(static_cast<const JFirst_t&>(*this), object);
     }

Member Data Documentation

double JGEOMETRY2D::JVector2D::__x

protected

Definition at line 257 of file JVector2D.hh.

double JGEOMETRY2D::JVector2D::__y

protected

Definition at line 258 of file JVector2D.hh.

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

JVector2D.hh

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation