Documentation of SFML 2.3.1

Warning: this page refers to an old version of SFML. Click here to switch to the latest version.
Public Member Functions | Public Attributes | Related Functions | List of all members
sf::Vector2< T > Class Template Reference
System module

Utility template class for manipulating 2-dimensional vectors. More...

#include <Vector2.hpp>

Public Member Functions

 Vector2 ()
 Default constructor. More...
 
 Vector2 (T X, T Y)
 Construct the vector from its coordinates. More...
 
template<typename U >
 Vector2 (const Vector2< U > &vector)
 Construct the vector from another type of vector. More...
 

Public Attributes

T x
 X coordinate of the vector. More...
 
T y
 Y coordinate of the vector. More...
 

Related Functions

(Note that these are not member functions.)

template<typename T >
Vector2< T > operator- (const Vector2< T > &right)
 Overload of unary operator -. More...
 
template<typename T >
Vector2< T > & operator+= (Vector2< T > &left, const Vector2< T > &right)
 Overload of binary operator +=. More...
 
template<typename T >
Vector2< T > & operator-= (Vector2< T > &left, const Vector2< T > &right)
 Overload of binary operator -=. More...
 
template<typename T >
Vector2< T > operator+ (const Vector2< T > &left, const Vector2< T > &right)
 Overload of binary operator +. More...
 
template<typename T >
Vector2< T > operator- (const Vector2< T > &left, const Vector2< T > &right)
 Overload of binary operator -. More...
 
template<typename T >
Vector2< T > operator* (const Vector2< T > &left, T right)
 Overload of binary operator *. More...
 
template<typename T >
Vector2< T > operator* (T left, const Vector2< T > &right)
 Overload of binary operator *. More...
 
template<typename T >
Vector2< T > & operator*= (Vector2< T > &left, T right)
 Overload of binary operator *=. More...
 
template<typename T >
Vector2< T > operator/ (const Vector2< T > &left, T right)
 Overload of binary operator /. More...
 
template<typename T >
Vector2< T > & operator/= (Vector2< T > &left, T right)
 Overload of binary operator /=. More...
 
template<typename T >
bool operator== (const Vector2< T > &left, const Vector2< T > &right)
 Overload of binary operator ==. More...
 
template<typename T >
bool operator!= (const Vector2< T > &left, const Vector2< T > &right)
 Overload of binary operator !=. More...
 

Detailed Description

template<typename T>
class sf::Vector2< T >

Utility template class for manipulating 2-dimensional vectors.

sf::Vector2 is a simple class that defines a mathematical vector with two coordinates (x and y).

It can be used to represent anything that has two dimensions: a size, a point, a velocity, etc.

The template parameter T is the type of the coordinates. It can be any type that supports arithmetic operations (+, -, /, *) and comparisons (==, !=), for example int or float.

You generally don't have to care about the templated form (sf::Vector2<T>), the most common specializations have special typedefs:

  • sf::Vector2<float> is sf::Vector2f
  • sf::Vector2<int> is sf::Vector2i
  • sf::Vector2<unsigned int> is sf::Vector2u

The sf::Vector2 class has a small and simple interface, its x and y members can be accessed directly (there are no accessors like setX(), getX()) and it contains no mathematical function like dot product, cross product, length, etc.

Usage example:

sf::Vector2f v1(16.5f, 24.f);
v1.x = 18.2f;
float y = v1.y;
sf::Vector2f v2 = v1 * 5.f;
sf::Vector2f v3;
v3 = v1 + v2;
bool different = (v2 != v3);

Note: for 3-dimensional vectors, see sf::Vector3.

Definition at line 37 of file Vector2.hpp.

Constructor & Destructor Documentation

template<typename T>
sf::Vector2< T >::Vector2 ( )

Default constructor.

Creates a Vector2(0, 0).

template<typename T>
sf::Vector2< T >::Vector2 ( T  X,
T  Y 
)

Construct the vector from its coordinates.

Parameters
XX coordinate
YY coordinate
template<typename T>
template<typename U >
sf::Vector2< T >::Vector2 ( const Vector2< U > &  vector)
explicit

Construct the vector from another type of vector.

This constructor doesn't replace the copy constructor, it's called only when U != T. A call to this constructor will fail to compile if U is not convertible to T.

Parameters
vectorVector to convert

Friends And Related Function Documentation

template<typename T >
bool operator!= ( const Vector2< T > &  left,
const Vector2< T > &  right 
)
related

Overload of binary operator !=.

This operator compares strict difference between two vectors.

Parameters
leftLeft operand (a vector)
rightRight operand (a vector)
Returns
True if left is not equal to right
template<typename T >
Vector2< T > operator* ( const Vector2< T > &  left,
T  right 
)
related

Overload of binary operator *.

Parameters
leftLeft operand (a vector)
rightRight operand (a scalar value)
Returns
Memberwise multiplication by right
template<typename T >
Vector2< T > operator* ( T  left,
const Vector2< T > &  right 
)
related

Overload of binary operator *.

Parameters
leftLeft operand (a scalar value)
rightRight operand (a vector)
Returns
Memberwise multiplication by left
template<typename T >
Vector2< T > & operator*= ( Vector2< T > &  left,
T  right 
)
related

Overload of binary operator *=.

This operator performs a memberwise multiplication by right, and assigns the result to left.

Parameters
leftLeft operand (a vector)
rightRight operand (a scalar value)
Returns
Reference to left
template<typename T >
Vector2< T > operator+ ( const Vector2< T > &  left,
const Vector2< T > &  right 
)
related

Overload of binary operator +.

Parameters
leftLeft operand (a vector)
rightRight operand (a vector)
Returns
Memberwise addition of both vectors
template<typename T >
Vector2< T > & operator+= ( Vector2< T > &  left,
const Vector2< T > &  right 
)
related

Overload of binary operator +=.

This operator performs a memberwise addition of both vectors, and assigns the result to left.

Parameters
leftLeft operand (a vector)
rightRight operand (a vector)
Returns
Reference to left
template<typename T >
Vector2< T > operator- ( const Vector2< T > &  right)
related

Overload of unary operator -.

Parameters
rightVector to negate
Returns
Memberwise opposite of the vector
template<typename T >
Vector2< T > operator- ( const Vector2< T > &  left,
const Vector2< T > &  right 
)
related

Overload of binary operator -.

Parameters
leftLeft operand (a vector)
rightRight operand (a vector)
Returns
Memberwise subtraction of both vectors
template<typename T >
Vector2< T > & operator-= ( Vector2< T > &  left,
const Vector2< T > &  right 
)
related

Overload of binary operator -=.

This operator performs a memberwise subtraction of both vectors, and assigns the result to left.

Parameters
leftLeft operand (a vector)
rightRight operand (a vector)
Returns
Reference to left
template<typename T >
Vector2< T > operator/ ( const Vector2< T > &  left,
T  right 
)
related

Overload of binary operator /.

Parameters
leftLeft operand (a vector)
rightRight operand (a scalar value)
Returns
Memberwise division by right
template<typename T >
Vector2< T > & operator/= ( Vector2< T > &  left,
T  right 
)
related

Overload of binary operator /=.

This operator performs a memberwise division by right, and assigns the result to left.

Parameters
leftLeft operand (a vector)
rightRight operand (a scalar value)
Returns
Reference to left
template<typename T >
bool operator== ( const Vector2< T > &  left,
const Vector2< T > &  right 
)
related

Overload of binary operator ==.

This operator compares strict equality between two vectors.

Parameters
leftLeft operand (a vector)
rightRight operand (a vector)
Returns
True if left is equal to right

Member Data Documentation

template<typename T>
T sf::Vector2< T >::x

X coordinate of the vector.

Definition at line 75 of file Vector2.hpp.

template<typename T>
T sf::Vector2< T >::y

Y coordinate of the vector.

Definition at line 76 of file Vector2.hpp.

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