A 3x3 floating-point matrix with SSE-accelerated operations. More...

#include <matrix3x3.h>

Public Member Functions
	Matrix3x3 ()
	Constructs a zero-initialized matrix.

	Matrix3x3 (float val[3][3])
	Constructs a matrix from a 3x3 float array.

Matrix3x3	operator+ (const Matrix3x3 &other) const
	Returns the element-wise sum of two matrices.

Matrix3x3	operator- (const Matrix3x3 &other) const
	Returns the element-wise difference of two matrices.

Matrix3x3	operator* (const Matrix3x3 &other) const
	Returns the matrix product of two matrices.

float	dot (int row1, int row2) const
	Computes the dot product of two rows in this matrix.

void	zero ()
	Sets all matrix elements to zero.

void	set (float val[3][3])
	Copies values from a 3x3 float array into this matrix.

Matrix3x3	transpose () const
	Returns the transpose of this matrix.

float	determinant () const
	Computes the determinant of this matrix.

Matrix3x3	inverse () const
	Computes the inverse of this matrix.

float	trace () const
	Computes the trace (sum of diagonal elements) of this matrix.

Matrix3x3	operator* (float scalar) const
	Multiplies every element by a scalar.

Matrix3x3	operator/ (float scalar) const
	Divides every element by a scalar.

bool	operator== (const Matrix3x3 &other) const
	Returns true if all elements are equal to the other matrix.

bool	operator!= (const Matrix3x3 &other) const
	Returns true if any element differs from the other matrix.

float	get (int row, int col) const
	Returns the element at the given row and column.

void	set (int row, int col, float value)
	Sets the element at the given row and column.

Matrix3x3	elementMultiply (const Matrix3x3 &other) const
	Returns the Hadamard (element-wise) product of two matrices.

Matrix3x3	elementDivide (const Matrix3x3 &other) const
	Returns the element-wise quotient of two matrices.

void	vectorTransform (float vector[3]) const
	Transforms a 3-element vector by this matrix in place.

Static Public Member Functions
static Matrix3x3	scalingMatrix (float scale_x, float scale_y, float scale_z)
	Creates a diagonal scaling matrix.

static Matrix3x3	rotationMatrix (float angle, char axis)
	Creates a rotation matrix around the specified axis.

Static Public Attributes
static constexpr float	IdentityMatrix [3][3]
	The 3x3 identity matrix constant.

Detailed Description

A 3x3 floating-point matrix with SSE-accelerated operations.

Provides standard linear algebra operations including addition, subtraction, multiplication, transpose, inverse, and determinant. Element-wise operations and vector transforms are also supported. Uses SSE intrinsics where beneficial.

Constructor & Destructor Documentation

◆ Matrix3x3()

Matrix3x3::Matrix3x3 ( float val[3][3] )

inline

Constructs a matrix from a 3x3 float array.

Parameters

val	The source array to copy values from.

Member Function Documentation

◆ determinant()

float Matrix3x3::determinant ( ) const

inline

Computes the determinant of this matrix.

Returns: The determinant value.

◆ dot()

float Matrix3x3::dot	(	int	row1,
		int	row2
	)		const

inline

Computes the dot product of two rows in this matrix.

Parameters

row1	Index of the first row (0-2).
row2	Index of the second row (0-2).

Returns: The dot product of the two row vectors.

◆ elementDivide()

Matrix3x3 Matrix3x3::elementDivide ( const Matrix3x3 & other ) const

inline

Returns the element-wise quotient of two matrices.

Division by zero for individual elements produces zero rather than NaN.

Parameters

other The divisor matrix.

Returns: The element-wise quotient matrix.

◆ elementMultiply()

Matrix3x3 Matrix3x3::elementMultiply ( const Matrix3x3 & other ) const

inline

Returns the Hadamard (element-wise) product of two matrices.

Parameters

other The matrix to multiply element-wise.

Returns: The element-wise product matrix.

◆ get()

float Matrix3x3::get	(	int	row,
		int	col
	)		const

inline

Returns the element at the given row and column.

Parameters

row	The row index (0-2).
col	The column index (0-2).

Returns: The element value, or 0.0f if the indices are out of range.

◆ inverse()

Matrix3x3 Matrix3x3::inverse ( ) const

inline

Computes the inverse of this matrix.

Returns: The inverse matrix, or a zero matrix if the matrix is singular.

◆ operator*() [1/2]

Matrix3x3 Matrix3x3::operator* ( const Matrix3x3 & other ) const

inline

Returns the matrix product of two matrices.

Parameters

other The right-hand matrix.

Returns: The resulting product matrix.

◆ operator*() [2/2]

Matrix3x3 Matrix3x3::operator* ( float scalar ) const

inline

Multiplies every element by a scalar.

Parameters

scalar The scalar multiplier.

Returns: The scaled matrix.

◆ operator+()

Matrix3x3 Matrix3x3::operator+ ( const Matrix3x3 & other ) const

inline

Returns the element-wise sum of two matrices.

Parameters

other The matrix to add.

Returns: The resulting sum matrix.

◆ operator-()

Matrix3x3 Matrix3x3::operator- ( const Matrix3x3 & other ) const

inline

Returns the element-wise difference of two matrices.

Parameters

other The matrix to subtract.

Returns: The resulting difference matrix.

◆ operator/()

Matrix3x3 Matrix3x3::operator/ ( float scalar ) const

inline

Divides every element by a scalar.

Parameters

scalar The scalar divisor. Returns a zero matrix if zero.

Returns: The divided matrix.

◆ rotationMatrix()

static Matrix3x3 Matrix3x3::rotationMatrix	(	float	angle,
		char	axis
	)

inlinestatic

Creates a rotation matrix around the specified axis.

Parameters

angle	The rotation angle in radians.
axis	The axis of rotation ('x', 'y', or 'z'). Returns identity for invalid axes.

Returns: The rotation matrix.

◆ scalingMatrix()

static Matrix3x3 Matrix3x3::scalingMatrix	(	float	scale_x,
		float	scale_y,
		float	scale_z
	)

inlinestatic

Creates a diagonal scaling matrix.

Parameters

scale_x	Scale factor along the X axis.
scale_y	Scale factor along the Y axis.
scale_z	Scale factor along the Z axis.

Returns: The scaling matrix.

◆ set() [1/2]

void Matrix3x3::set ( float val[3][3] )

inline

Copies values from a 3x3 float array into this matrix.

Parameters

val	The source array.

◆ set() [2/2]

void Matrix3x3::set	(	int	row,
		int	col,
		float	value
	)

inline

Sets the element at the given row and column.

Parameters

row	The row index (0-2).
col	The column index (0-2).
value	The value to set. Ignored if indices are out of range.

◆ trace()

float Matrix3x3::trace ( ) const

inline

Computes the trace (sum of diagonal elements) of this matrix.

Returns: The trace value.

◆ transpose()

Matrix3x3 Matrix3x3::transpose ( ) const

inline

Returns the transpose of this matrix.

Returns: The transposed matrix.

◆ vectorTransform()

void Matrix3x3::vectorTransform ( float vector[3] ) const

inline

Transforms a 3-element vector by this matrix in place.

Parameters

vector A 3-element float array that is multiplied by this matrix.

Member Data Documentation

◆ IdentityMatrix

constexpr float Matrix3x3::IdentityMatrix[3][3]

staticconstexpr

Initial value:

= {
                        {1.0f, 0.0f, 0.0f},
                        {0.0f, 1.0f, 0.0f},
                        {0.0f, 0.0f, 1.0f}
                }

The 3x3 identity matrix constant.

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

include/promeki/core/matrix3x3.h

Public Member Functions

Static Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Matrix3x3()

Member Function Documentation

◆ determinant()

◆ dot()

◆ elementDivide()

◆ elementMultiply()

◆ get()

◆ inverse()

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ operator+()

◆ operator-()

◆ operator/()

◆ rotationMatrix()

◆ scalingMatrix()

◆ set() [1/2]

◆ set() [2/2]

◆ trace()

◆ transpose()

◆ vectorTransform()

Member Data Documentation

◆ IdentityMatrix