AeonGUI::Matrix2x3 Class Reference

2x3 affine transformation matrix. More...

#include <aeongui/Matrix2x3.hpp>

Public Member Functions
	Matrix2x3 ()
	Default constructor. Initializes to the identity matrix.
	Matrix2x3 (double xx, double yx, double xy, double yy, double x0, double y0)
	Construct from individual matrix elements.
	Matrix2x3 (const std::array< const double, 6 > aMatrixArray)
	Construct from an array of 6 doubles.
	Matrix2x3 (double aRotation)
	Construct a rotation matrix.
	Matrix2x3 (const Vector2 &aScale)
	Construct a scale matrix.
	Matrix2x3 (const Vector2 &aScale, double aRotation)
	Construct a scale-rotation matrix.
	Matrix2x3 (const Vector2 &aScale, double aRotation, const Vector2 &aTranslation)
	Construct a full scale-rotation-translation matrix.
Matrix2x3 &	operator*= (const Matrix2x3 &aRight)
	Multiply this matrix by another (post-multiply).
const double &	operator[] (size_t aIndex) const
	Access a matrix element by index.

Detailed Description

2x3 affine transformation matrix.

Represents a 2D affine transform as a 2x3 matrix of the form:

| xx  yx |
| xy  yy |
| x0  y0 |

Supports construction from scale, rotation, and translation components.

Constructor & Destructor Documentation

Matrix2x3() [1/6]

AeonGUI::Matrix2x3::Matrix2x3	(	double	xx,
		double	yx,
		double	xy,
		double	yy,
		double	x0,
		double	y0 )

Construct from individual matrix elements.

Parameters

xx	Row 0, column 0.
yx	Row 0, column 1.
xy	Row 1, column 0.
yy	Row 1, column 1.
x0	Translation X.
y0	Translation Y.

Matrix2x3() [2/6]

AeonGUI::Matrix2x3::Matrix2x3

(

const std::array< const double, 6 >

aMatrixArray

)

Construct from an array of 6 doubles.

Parameters

aMatrixArray

Array in row-major order {xx, yx, xy, yy, x0, y0}.

Matrix2x3() [3/6]

AeonGUI::Matrix2x3::Matrix2x3

(

double

aRotation

)

Construct a rotation matrix.

Parameters

aRotation

Rotation angle in radians.

Matrix2x3() [4/6]

AeonGUI::Matrix2x3::Matrix2x3

(

const Vector2 &

aScale

)

Construct a scale matrix.

Parameters

aScale

Scale factors for each axis.

Matrix2x3() [5/6]

AeonGUI::Matrix2x3::Matrix2x3	(	const Vector2 &	aScale,
		double	aRotation )

Construct a scale-rotation matrix.

Parameters

aScale	Scale factors for each axis.
aRotation	Rotation angle in radians.

Matrix2x3() [6/6]

AeonGUI::Matrix2x3::Matrix2x3	(	const Vector2 &	aScale,
		double	aRotation,
		const Vector2 &	aTranslation )

Construct a full scale-rotation-translation matrix.

Parameters

aScale	Scale factors for each axis.
aRotation	Rotation angle in radians.
aTranslation	Translation vector.

Member Function Documentation

operator*=()

Matrix2x3 & AeonGUI::Matrix2x3::operator*=

(

const Matrix2x3 &

aRight

)

Multiply this matrix by another (post-multiply).

Parameters

aRight

The right-hand-side matrix.

Returns

Reference to this matrix after multiplication.

operator[]()

const double & AeonGUI::Matrix2x3::operator[]

(

size_t

aIndex

)

const

Access a matrix element by index.

Parameters

aIndex

Element index [0..5].

Returns

Const reference to the element.

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

• include/aeongui/Matrix2x3.hpp
• core/Matrix2x3.cpp