etk::Matrix2 Class Reference

#include <Matrix2.hpp>

Public Member Functions
	Matrix2 ()
	Matrix2 (const Matrix2 &_obj)
	Matrix2 (float _sx, float _shy, float _shx, float _sy, float _tx, float _ty)
	Matrix2 (const float *_values)
	Matrix2 (const double *_values)
void	identity ()
const Matrix2 &	operator= (const Matrix2 &_obj)
bool	operator== (const Matrix2 &_obj) const
bool	operator!= (const Matrix2 &_obj) const
const Matrix2 &	operator+= (const Matrix2 &_obj)
Matrix2	operator+ (const Matrix2 &_obj) const
const Matrix2 &	operator-= (const Matrix2 &_obj)
Matrix2	operator- (const Matrix2 &_obj) const
const Matrix2 &	operator*= (const Matrix2 &_obj)
Matrix2	operator* (const Matrix2 &_obj)
vec2	operator* (const vec2 &_point) const
vec2	applyScaleRotation (const vec2 &_point) const
Matrix2	operator~ () const
void	flipX ()
void	flipY ()
void	scale (const vec2 &_vect)
void	scale (float _value)
void	rotate (float _angleRad)
void	translate (const vec2 &_vect)
float	determinant () const
void	invert ()

Public Attributes
float	m_mat [2 *3]

Detailed Description

Transformation matrix for vector 2D.

Constructor & Destructor Documentation

Matrix2() [1/5]

etk::Matrix2::Matrix2

(

)

Constructor that load identity.

Matrix2() [2/5]

etk::Matrix2::Matrix2

(

const Matrix2 &

_obj

)

Copy constructor.

Parameters

[in]

_obj

Matrix object to copy

Matrix2() [3/5]

etk::Matrix2::Matrix2	(	float	_sx,
		float	_shy,
		float	_shx,
		float	_sy,
		float	_tx,
		float	_ty
	)

Configuration constructor.

Parameters

[in]	_sx	Scale threw X axis
[in]	_shy	Rotate in radian threw Y axis
[in]	_shx	Rotate in radian threw X axis
[in]	_sy	Scale threw Y axis
[in]	_tx	Translate threw X axis
[in]	_ty	translate threw Y axis

Matrix2() [4/5]

etk::Matrix2::Matrix2

(

const float *

_values

)

Configuration constructor.

Parameters

[in]

_values

vector of values in float

Matrix2() [5/5]

etk::Matrix2::Matrix2

(

const double *

_values

)

Configuration constructor.

Parameters

[in]

_values

vector of values in double

Member Function Documentation

applyScaleRotation()

vec2 etk::Matrix2::applyScaleRotation

(

const vec2 &

_point

)

const

Apply matrix on a vector Scale Rotate, but NOT the translation.

Parameters

[in]

_point

Point value to apply the matrix

Returns

New vector containing the value

determinant()

float etk::Matrix2::determinant

(

)

const

Computes the determinant of the matrix.

Returns

The determinent Value.

flipX()

void etk::Matrix2::flipX

(

)

Flip the mathix threw the X axis.

flipY()

void etk::Matrix2::flipY

(

)

Flip the mathix threw the Y axis.

identity()

void etk::Matrix2::identity

(

)

Load Identity matrix.

invert()

void etk::Matrix2::invert

(

)

Inverts the matrix.

Note

The determinant must be != 0, otherwithe the matrix can't be inverted.

Returns

The inverted matrix.

operator!=()

bool etk::Matrix2::operator!=

(

const Matrix2 &

_obj

)

const

In-Equality compare operator with an other object.

Parameters

[in]

_obj

Reference on the comparing object

Returns

true The Objects are NOT identical

false The Objects are identical

operator*() [1/2]

Matrix2 etk::Matrix2::operator*

(

const Matrix2 &

_obj

)

Operator* Multiplication an other matrix with this one.

Parameters

[in]

_obj

Reference on the external object

Returns

New vector containing the value

operator*() [2/2]

vec2 etk::Matrix2::operator*

(

const vec2 &

_point

)

const

Operator* apply matrix on a vector.

Parameters

[in]

_point

Point value to apply the matrix

Returns

New vector containing the value

operator*=()

const Matrix2& etk::Matrix2::operator*=

(

const Matrix2 &

_obj

)

Operator*= Multiplication an other matrix with this one.

Parameters

[in]

_obj

Reference on the external object

Returns

Local reference of the vector multiplicated

operator+()

Matrix2 etk::Matrix2::operator+

(

const Matrix2 &

_obj

)

const

Operator+ Addition an other matrix with this one.

Parameters

[in]

_obj

Reference on the external object

Returns

New vector containing the value

operator+=()

const Matrix2& etk::Matrix2::operator+=

(

const Matrix2 &

_obj

)

Operator+= Addition an other matrix with this one.

Parameters

[in]

_obj

Reference on the external object

Returns

Local reference of the vector additionned

operator-()

Matrix2 etk::Matrix2::operator-

(

const Matrix2 &

_obj

)

const

Operator- Decrement an other matrix with this one.

Parameters

[in]

_obj

Reference on the external object

Returns

New vector containing the value

operator-=()

const Matrix2& etk::Matrix2::operator-=

(

const Matrix2 &

_obj

)

Operator-= Decrement an other matrix with this one.

Parameters

[in]

_obj

Reference on the external object

Returns

Local reference of the vector decremented

operator=()

const Matrix2& etk::Matrix2::operator=

(

const Matrix2 &

_obj

)

Operator= Asign the current object with an other object.

Parameters

[in]

_obj

Reference on the external object

Returns

Local reference of the vector asigned

operator==()

bool etk::Matrix2::operator==

(

const Matrix2 &

_obj

)

const

Equality compare operator with an other object.

Parameters

[in]

_obj

Reference on the comparing object

Returns

true The Objects are identical

false The Objects are NOT identical

operator~()

Matrix2 etk::Matrix2::operator~

(

)

const

Inverse the current Matrix.

Returns

New vector containing the value

rotate()

void etk::Matrix2::rotate

(

float

_angleRad

)

Makes a rotation matrix.

Parameters

[in]

_angleRad

angle to apply.

scale() [1/2]

void etk::Matrix2::scale

(

const vec2 &

_vect

)

Scale the current Matrix.

Parameters

[in]

_vect

Vector to scale matrix.

scale() [2/2]

void etk::Matrix2::scale

(

float

_value

)

Scale the current Matrix.

Parameters

[in]

_value

Single value to scale in X andf Y.

translate()

void etk::Matrix2::translate

(

const vec2 &

_vect

)

Makes a translation of the matrix.

Parameters

[in]

_vect

Translation to apply.

Member Data Documentation

m_mat

float etk::Matrix2::m_mat[2 *3]

Internal data sx shx tx sy shy ty.

---

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

• framework/atria-soft/etk/etk/math/Matrix2.hpp