vector2.h File Reference

two-dimensional vector More...

#include "a.h"
#include "math.h"

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Data Structures
struct	a_vector2
	instance structure for two-dimensional vector More...

Macros
#define	A_VECTOR2_C(x, y)
#define	a_vector2_c(x)
#define	a_vector2_(_, x)

Typedefs
typedef struct a_vector2	a_vector2
typedef struct a_vector2	a::vector2

Functions
a_real	a_vector2_set_dir (a_vector2 *ctx, a_real x, a_real y)
	set the components of a 2D vector and normalize it in place.
void	a_vector2_val (a_vector2 const *ctx, a_real *x, a_real *y)
	get the cartesian coordinates of a 2D vector.
void	a_vector2_set_val (a_vector2 *ctx, a_real x, a_real y)
	set the cartesian coordinates of a 2D vector.
void	a_vector2_pol (a_vector2 const *ctx, a_real *rho, a_real *theta)
	get the polar coordinates of a 2D vector.
void	a_vector2_set_pol (a_vector2 *ctx, a_real rho, a_real theta)
	set the polar coordinates of a 2D vector.
void	a_vector2_add (a_vector2 const *lhs, a_vector2 const *rhs, a_vector2 *res)
	add a 2D vector to a 2D vector.
void	a_vector2_sub (a_vector2 const *lhs, a_vector2 const *rhs, a_vector2 *res)
	subtract a 2D vector from a 2D vector.
void	a_vector2_mul (a_vector2 const *lhs, a_real rhs, a_vector2 *res)
	multiplie a 2D vector by a scalar.
void	a_vector2_div (a_vector2 const *lhs, a_real rhs, a_vector2 *res)
	divide a 2D vector by a scalar.
void	a_vector2_neg (a_vector2 const *ctx, a_vector2 *res)
	negate a 2D vector.
a_real	a_vector2_unit (a_vector2 *ctx)
	normalize a 2D vector in-place to unit length.
a_real	a_vector2_norm (a_vector2 const *ctx)
	compute the magnitude of a 2D vector.
a_real	a_vector2_norm2 (a_vector2 const *ctx)
	compute the squared magnitude of a 2D vector.
a_real	a_vector2_dot (a_vector2 const *lhs, a_vector2 const *rhs)
	compute the dot product (scalar product) of two 2D vectors.
a_real	a_vector2_dist (a_vector2 const *lhs, a_vector2 const *rhs)
	compute the distance between two 2D vectors.
a_real	a_vector2_dist2 (a_vector2 const *lhs, a_vector2 const *rhs)
	compute the squared distance between two 2D vectors.
a_real	a_vector2_angle (a_vector2 const *lhs, a_vector2 const *rhs)
	compute the angle between two 2D vectors in radians.
a_bool	a_vector2_isver (a_vector2 const *lhs, a_vector2 const *rhs)
	check if two 2D vectors are orthogonal.
a_bool	a_vector2_ispar (a_vector2 const *lhs, a_vector2 const *rhs)
	check if two 2D vectors are parallel or anti-parallel.
a_real	a_vector2_cross (a_vector2 const *lhs, a_vector2 const *rhs)
	compute the cross product (vector product) of two 2D vectors
void	a_vector2_outer (a_vector2 const *lhs, a_vector2 const *rhs, a_real res[4])
	compute the outer product (tensor product) of two 2D vectors.
int	a_vector2_proj (a_vector2 const *ctx, a_vector2 const *dir, a_vector2 *res)
	project vector onto the direction of vector.
int	a_vector2_perp (a_vector2 const *ctx, a_vector2 const *dir, a_vector2 *res)
	project vector onto the line perpendicular to vector.
int	a_vector2_refl (a_vector2 const *ctx, a_vector2 const *dir, a_vector2 *res)
	reflect vector across the line with direction vector.
void	a_vector2_rot_ (a_vector2 const *ctx, a_real sin, a_real cos, a_vector2 *res)
	rotate a 2D vector by a specified angle (in radians).
void	a_vector2_rot (a_vector2 const *ctx, a_real angle, a_vector2 *res)
	rotate a 2D vector by a specified angle (in radians).

Detailed Description

two-dimensional vector