Floating point vectors in 2D

2D vector definition and operations More...

Data Structures
struct	_Eina_Vector2

Macros
#define	EINA_VECTOR2(x, y)   ((Eina_Vector2) {(x), (y)})

Typedefs
typedef struct _Eina_Vector2	Eina_Vector2
typedef struct _Eina_Vector3	Eina_Vector3

Functions
static void	eina_vector2_set (Eina_Vector2 *dst, double x, double y)
	Set parameters to vector.
static void	eina_vector2_array_set (Eina_Vector2 *dst, const double *v)
	Set array to vector.
static void	eina_vector2_copy (Eina_Vector2 *dst, const Eina_Vector2 *src)
	Copy vector.
static void	eina_vector2_negate (Eina_Vector2 *out, const Eina_Vector2 *v)
	Make negative vector.
static void	eina_vector2_add (Eina_Vector2 *out, const Eina_Vector2 *a, const Eina_Vector2 *b)
	Add two vectors.
static void	eina_vector2_subtract (Eina_Vector2 *out, const Eina_Vector2 *a, const Eina_Vector2 *b)
	Subtract two vectors.
static void	eina_vector2_scale (Eina_Vector2 *out, const Eina_Vector2 *v, double scale)
	Scale vector.
static double	eina_vector2_dot_product (const Eina_Vector2 *a, const Eina_Vector2 *b)
	Return the dot product of the two vectors.
static double	eina_vector2_length_get (const Eina_Vector2 *v)
	Return the length of the given vector.
static double	eina_vector2_length_square_get (const Eina_Vector2 *v)
	Return the length in square of the given vector.
static double	eina_vector2_distance_get (const Eina_Vector2 *a, const Eina_Vector2 *b)
	Return the distance between of two vectors.
static double	eina_vector2_distance_square_get (const Eina_Vector2 *a, const Eina_Vector2 *b)
	Return the distance in square between of two vectors.
static void	eina_vector2_normalize (Eina_Vector2 *out, const Eina_Vector2 *v)
	normalize vector.
static void	eina_vector2_transform (Eina_Vector2 *out, const Eina_Matrix2 *m, const Eina_Vector2 *v)
	Transform vector.
static void	eina_vector2_homogeneous_position_transform (Eina_Vector2 *out, const Eina_Matrix3 *m, const Eina_Vector2 *v)
	Homogeneous position transform vector.
static void	eina_vector2_homogeneous_direction_transform (Eina_Vector2 *out, const Eina_Matrix3 *m, const Eina_Vector2 *v)
	Homogeneous direction transform vector.

Detailed Description

2D vector definition and operations

Function Documentation

eina_vector2_set()

static void eina_vector2_set ( Eina_Vector2 *  dst, double  x, double  y  )

inlinestatic

Set parameters to vector.

Parameters

[out]	dst	The resulting vector.
[in]	x	The x component.
[in]	y	The y component.

Since

1.17

eina_vector2_array_set()

static void eina_vector2_array_set ( Eina_Vector2 *  dst, const double *  v  )

inlinestatic

Set array to vector.

Parameters

[out]	dst	The resulting vector.
[in]	v	The the array[2] for set.

Set to vector first 2 elements from array.

Since

1.17

eina_vector2_copy()

static void eina_vector2_copy ( Eina_Vector2 *  dst, const Eina_Vector2 *  src  )

inlinestatic

Copy vector.

Parameters

[out]	dst	The vector copy.
[in]	src	The vector for copy.

Since

1.17

eina_vector2_negate()

static void eina_vector2_negate ( Eina_Vector2 *  out, const Eina_Vector2 *  v  )

inlinestatic

Make negative vector.

Parameters

[out]	out	The resulting vector.
[in]	v	The current vector.

Since

1.17

eina_vector2_add()

static void eina_vector2_add ( Eina_Vector2 *  out, const Eina_Vector2 *  a, const Eina_Vector2 *  b  )

inlinestatic

Add two vectors.

Parameters

[out]	out	The resulting vector.
[in]	a	The first member of the add.
[in]	b	The second member of the add.

Since

1.17

eina_vector2_subtract()

static void eina_vector2_subtract ( Eina_Vector2 *  out, const Eina_Vector2 *  a, const Eina_Vector2 *  b  )

inlinestatic

Subtract two vectors.

Parameters

[out]	out	The resulting vector
[in]	a	The first member of the subtract
[in]	b	The second member of the subtract

Since

1.17

eina_vector2_scale()

static void eina_vector2_scale ( Eina_Vector2 *  out, const Eina_Vector2 *  v, double  scale  )

inlinestatic

Scale vector.

Parameters

[out]	out	The resulting vector.
[in]	v	The vector for scale.
[in]	scale	The scale value.

Since

1.17

eina_vector2_dot_product()

static double eina_vector2_dot_product ( const Eina_Vector2 *  a, const Eina_Vector2 *  b  )

inlinestatic

Return the dot product of the two vectors.

Parameters

[in]	a	The first member.
[in]	b	The second member.

Returns

The dot product.

Since

1.17

eina_vector2_length_get()

static double eina_vector2_length_get ( const Eina_Vector2 *  v )

inlinestatic

Return the length of the given vector.

Parameters

[in]

v

The vector.

Returns

The length.

Since

1.17

eina_vector2_length_square_get()

static double eina_vector2_length_square_get ( const Eina_Vector2 *  v )

inlinestatic

Return the length in square of the given vector.

Parameters

[in]

v

The vector.

Returns

The length in square.

Since

1.17

eina_vector2_distance_get()

static double eina_vector2_distance_get ( const Eina_Vector2 *  a, const Eina_Vector2 *  b  )

inlinestatic

Return the distance between of two vectors.

Parameters

[in]	a	The first vector.
[in]	b	The second vector.

Returns

The distance.

Since

1.17

eina_vector2_distance_square_get()

static double eina_vector2_distance_square_get ( const Eina_Vector2 *  a, const Eina_Vector2 *  b  )

inlinestatic

Return the distance in square between of two vectors.

Parameters

[in]	a	The first vector.
[in]	b	The second vector.

Returns

The distance in square.

Since

1.17

eina_vector2_normalize()

static void eina_vector2_normalize ( Eina_Vector2 *  out, const Eina_Vector2 *  v  )

inlinestatic

normalize vector.

Parameters

[out]	out	The resulting vector.
[in]	v	The vector for normalize.

Since

1.17

eina_vector2_transform()

static void eina_vector2_transform ( Eina_Vector2 *  out, const Eina_Matrix2 *  m, const Eina_Vector2 *  v  )

inlinestatic

Transform vector.

Parameters

[out]	out	The resulting vector.
[in]	m	The matrix for transform.
[in]	v	The vector for transform.

Since

1.17

eina_vector2_homogeneous_position_transform()

static void eina_vector2_homogeneous_position_transform ( Eina_Vector2 *  out, const Eina_Matrix3 *  m, const Eina_Vector2 *  v  )

inlinestatic

Homogeneous position transform vector.

Parameters

[out]	out	The resulting vector.
[in]	m	The matrix for transform.
[in]	v	The vector for transform.

Since

1.17

eina_vector2_homogeneous_direction_transform()

static void eina_vector2_homogeneous_direction_transform ( Eina_Vector2 *  out, const Eina_Matrix3 *  m, const Eina_Vector2 *  v  )

inlinestatic

Homogeneous direction transform vector.

Parameters

[out]	out	The resulting vector.
[in]	m	The matrix for transform.
[in]	v	The vector for transform.

Since

1.17