Functions

Collaboration diagram for Functions:

Functions
void	hal_gfx_mat3x3_load_identity (hal_gfx_matrix3x3_t m)
	Load Identity Matrix. More...
void	hal_gfx_mat3x3_translate (hal_gfx_matrix3x3_t m, float tx, float ty)
	Apply translate transformation. More...
void	hal_gfx_mat3x3_scale (hal_gfx_matrix3x3_t m, float sx, float sy)
	Apply scale transformation. More...
void	hal_gfx_mat3x3_shear (hal_gfx_matrix3x3_t m, float shx, float shy)
	Apply shear transformation. More...
void	hal_gfx_mat3x3_mirror (hal_gfx_matrix3x3_t m, int mx, int my)
	Apply mirror transformation. More...
void	hal_gfx_mat3x3_rotate (hal_gfx_matrix3x3_t m, float angle_degrees)
	Apply rotation transformation. More...
void	hal_gfx_mat3x3_mul (hal_gfx_matrix3x3_t m, hal_gfx_matrix3x3_t _m)
	Multiply two 3x3 matrices ( m = m*_m) More...
void	hal_gfx_mat3x3_mul_vec (hal_gfx_matrix3x3_t m, float *x, float *y)
	Multiply vector with matrix. More...
void	hal_gfx_mat3x3_mul_vec_affine (hal_gfx_matrix3x3_t m, float *x, float *y)
	Multiply vector with affine matrix. More...
void	hal_gfx_mat3x3_adj (hal_gfx_matrix3x3_t m)
	Calculate adjoint. More...
void	hal_gfx_mat3x3_div_scalar (hal_gfx_matrix3x3_t m, float s)
	Divide matrix with scalar value. More...
int	hal_gfx_mat3x3_invert (hal_gfx_matrix3x3_t m)
	Invert matrix. More...
int	hal_gfx_mat3x3_square_to_quad (float dx0, float dy0, float dx1, float dy1, float dx2, float dy2, float dx3, float dy3, hal_gfx_matrix3x3_t m)
	Square to quad transformation. More...
int	hal_gfx_mat3x3_quad_to_rect (int width, int height, float sx0, float sy0, float sx1, float sy1, float sx2, float sy2, float sx3, float sy3, hal_gfx_matrix3x3_t m)
	Map rectangle to quadrilateral. More...

Detailed Description

Function Documentation

hal_gfx_mat3x3_adj()

void hal_gfx_mat3x3_adj

(

hal_gfx_matrix3x3_t

m

)

Calculate adjoint.

Parameters

[in]

m

Matrix

hal_gfx_mat3x3_div_scalar()

void hal_gfx_mat3x3_div_scalar	(	hal_gfx_matrix3x3_t	m,
		float	s
	)

Divide matrix with scalar value.

Parameters

[in]	m	Matrix to divide
[in]	s	scalar value

hal_gfx_mat3x3_invert()

int hal_gfx_mat3x3_invert

(

hal_gfx_matrix3x3_t

m

)

Invert matrix.

Parameters

[in]

m

Matrix to invert

hal_gfx_mat3x3_load_identity()

void hal_gfx_mat3x3_load_identity

(

hal_gfx_matrix3x3_t

m

)

Load Identity Matrix.

Parameters

[in]

m

Matrix to be loaded

hal_gfx_mat3x3_mirror()

void hal_gfx_mat3x3_mirror	(	hal_gfx_matrix3x3_t	m,
		int	mx,
		int	my
	)

Apply mirror transformation.

Parameters

[in]	m	Matrix to apply transformation
[in]	mx	if non-zero, mirror horizontally
[in]	my	if non-zero, mirror vertically

hal_gfx_mat3x3_mul()

void hal_gfx_mat3x3_mul	(	hal_gfx_matrix3x3_t	m,
		hal_gfx_matrix3x3_t	_m
	)

Multiply two 3x3 matrices ( m = m*_m)

Parameters

[in]	m	left matrix, will be overwritten by the result
[in]	_m	right matrix

hal_gfx_mat3x3_mul_vec()

void hal_gfx_mat3x3_mul_vec	(	hal_gfx_matrix3x3_t	m,
		float *	x,
		float *	y
	)

Multiply vector with matrix.

Parameters

[in]	m	Matrix to multiply with
[in]	x	Vector x coefficient
[in]	y	Vector y coefficient

hal_gfx_mat3x3_mul_vec_affine()

void hal_gfx_mat3x3_mul_vec_affine	(	hal_gfx_matrix3x3_t	m,
		float *	x,
		float *	y
	)

Multiply vector with affine matrix.

Parameters

[in]	m	Matrix to multiply with
[in]	x	Vector x coefficient
[in]	y	Vector y coefficient

hal_gfx_mat3x3_quad_to_rect()

int hal_gfx_mat3x3_quad_to_rect	(	int	width,
		int	height,
		float	sx0,
		float	sy0,
		float	sx1,
		float	sy1,
		float	sx2,
		float	sy2,
		float	sx3,
		float	sy3,
		hal_gfx_matrix3x3_t	m
	)

Map rectangle to quadrilateral.

Parameters

[in]	width	Rectangle width
[in]	height	Rectangle height
[in]	sx0	x coordinate at the first vertex of the quadrilateral
[in]	sy0	y coordinate at the first vertex of the quadrilateral
[in]	sx1	x coordinate at the second vertex of the quadrilateral
[in]	sy1	y coordinate at the second vertex of the quadrilateral
[in]	sx2	x coordinate at the third vertex of the quadrilateral
[in]	sy2	y coordinate at the third vertex of the quadrilateral
[in]	sx3	x coordinate at the fourth vertex of the quadrilateral
[in]	sy3	y coordinate at the fourth vertex of the quadrilateral
[in]	m	Mapping matrix

hal_gfx_mat3x3_rotate()

void hal_gfx_mat3x3_rotate	(	hal_gfx_matrix3x3_t	m,
		float	angle_degrees
	)

Apply rotation transformation.

Parameters

[in]	m	Matrix to apply transformation
[in]	angle_degrees	Angle to rotate in degrees

hal_gfx_mat3x3_scale()

void hal_gfx_mat3x3_scale	(	hal_gfx_matrix3x3_t	m,
		float	sx,
		float	sy
	)

Apply scale transformation.

Parameters

[in]	m	Matrix to apply transformation
[in]	sx	X scaling factor
[in]	sy	Y scaling factor

hal_gfx_mat3x3_shear()

void hal_gfx_mat3x3_shear	(	hal_gfx_matrix3x3_t	m,
		float	shx,
		float	shy
	)

Apply shear transformation.

Parameters

[in]	m	Matrix to apply transformation
[in]	shx	X shearing factor
[in]	shy	Y shearing factor

hal_gfx_mat3x3_square_to_quad()

int hal_gfx_mat3x3_square_to_quad	(	float	dx0,
		float	dy0,
		float	dx1,
		float	dy1,
		float	dx2,
		float	dy2,
		float	dx3,
		float	dy3,
		hal_gfx_matrix3x3_t	m
	)

Square to quad transformation.

Parameters

[in]	dx0	x coordinate at the first vertex of the quadrilateral
[in]	dy0	y coordinate at the first vertex of the quadrilateral
[in]	dx1	x coordinate at the second vertex of the quadrilateral
[in]	dy1	y coordinate at the second vertex of the quadrilateral
[in]	dx2	x coordinate at the third vertex of the quadrilateral
[in]	dy2	y coordinate at the third vertex of the quadrilateral
[in]	dx3	x coordinate at the fourth vertex of the quadrilateral
[in]	dy3	y coordinate at the fourth vertex of the quadrilateral
[in]	m	Store converted matrix

hal_gfx_mat3x3_translate()

void hal_gfx_mat3x3_translate	(	hal_gfx_matrix3x3_t	m,
		float	tx,
		float	ty
	)

Apply translate transformation.

Parameters

[in]	m	Matrix to apply transformation
[in]	tx	X translation factor
[in]	ty	Y translation factor