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Public Member Functions | Static Public Attributes | List of all members
sf::Matrix3 Class Reference

Utility class to manipulate 3x3 matrices representing 2D transformations. More...

#include <SFML/Graphics/Matrix3.hpp>

Public Member Functions

 Matrix3 ()
 Default constructor (builds an identity matrix).
 Matrix3 (float a00, float a01, float a02, float a10, float a11, float a12, float a20, float a21, float a22)
 Construct a matrix from its 9 elements.
void SetFromTransformations (const Vector2f &Center, const Vector2f &Translation, float Rotation, const Vector2f &Scale)
 Build a matrix from a set of transformations.
Vector2f Transform (const Vector2f &Point) const
 Transform a point by the matrix.
Matrix3 GetInverse () const
 Return the inverse of the matrix.
const float * Get4x4Elements () const
 Return the elements of the matrix as a 4x4, in an array of 16 floats.
float operator() (unsigned int Row, unsigned int Col) const
 Operator () overloads to access the matrix elements.
float & operator() (unsigned int Row, unsigned int Col)
Matrix3 operator* (const Matrix3 &Mat) const
 Operator * overload to multiply two matrices.
Matrix3 & operator*= (const Matrix3 &Mat)
 Operator *= overload to multiply-assign two matrices.

Static Public Attributes

static const Matrix3 Identity
 Identity matrix.

Detailed Description

Utility class to manipulate 3x3 matrices representing 2D transformations.

Definition at line 42 of file Matrix3.hpp.

Constructor & Destructor Documentation

◆ Matrix3() [1/2]

sf::Matrix3::Matrix3 ( )

Default constructor (builds an identity matrix).

◆ Matrix3() [2/2]

sf::Matrix3::Matrix3 ( float a00,
float a01,
float a02,
float a10,
float a11,
float a12,
float a20,
float a21,
float a22 )

Construct a matrix from its 9 elements.

Member Function Documentation

◆ Get4x4Elements()

const float * sf::Matrix3::Get4x4Elements ( ) const

Return the elements of the matrix as a 4x4, in an array of 16 floats.

Returns
Pointer to the 4x4 matrix elements

◆ GetInverse()

Matrix3 sf::Matrix3::GetInverse ( ) const

Return the inverse of the matrix.

Returns
A new matrix which is the inverse of this

◆ operator()() [1/2]

float & sf::Matrix3::operator() ( unsigned int Row,
unsigned int Col )

◆ operator()() [2/2]

float sf::Matrix3::operator() ( unsigned int Row,
unsigned int Col ) const

Operator () overloads to access the matrix elements.

Parameters
Row: Element row (0 based)
Col: Element column (0 based)
Returns
Matrix element (Row, Col)

◆ operator*()

Matrix3 sf::Matrix3::operator* ( const Matrix3 & Mat) const

Operator * overload to multiply two matrices.

Parameters
Mat: Matrix to multiply
Returns
this * Mat

◆ operator*=()

Matrix3 & sf::Matrix3::operator*= ( const Matrix3 & Mat)

Operator *= overload to multiply-assign two matrices.

Parameters
Mat: Matrix to multiply
Returns
this * Mat

◆ SetFromTransformations()

void sf::Matrix3::SetFromTransformations ( const Vector2f & Center,
const Vector2f & Translation,
float Rotation,
const Vector2f & Scale )

Build a matrix from a set of transformations.

Parameters
Center: Origin for the transformations
Translation: Translation offset
Rotation: Rotation angle in degrees
Scale: Scaling factors

◆ Transform()

Vector2f sf::Matrix3::Transform ( const Vector2f & Point) const

Transform a point by the matrix.

Parameters
Point: Point to transform
Returns
Transformed point

Member Data Documentation

◆ Identity

const Matrix3 sf::Matrix3::Identity
static

Identity matrix.

Definition at line 133 of file Matrix3.hpp.

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