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sf::Matrix3 Class Reference

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

#include <Matrix3.hpp>

List of all members.

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

sf::Matrix3::Matrix3

(

)

Default constructor (builds an identity matrix).

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

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

Matrix3 sf::Matrix3::GetInverse

(

)

const

Return the inverse of the matrix.

Returns:

A new matrix which is the inverse of this

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)

Matrix3 sf::Matrix3::operator*

(

const Matrix3 &

Mat

)

const

Operator * overload to multiply two matrices.

Parameters:

Mat

: Matrix to multiply

Returns:

this * Mat

Matrix3& sf::Matrix3::operator*=

(

const Matrix3 &

Mat

)

Operator *= overload to multiply-assign two matrices.

Parameters:

Mat

: Matrix to multiply

Returns:

this * Mat

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

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

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 files:

• Matrix3.hpp
• Matrix3.cpp

 ::  Copyright © 2007-2008 Laurent Gomila, all rights reserved  ::  Documentation generated by doxygen 1.5.2  :: 

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