vector_3.h File Reference

#include <stdint.h>
#include <math.h>
#include <retro_common_api.h>

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Macros
#define	vec3_dot(a, b)   (a[0] * b[0] + a[1] * b[1] + a[2] * b[2])
#define	vec3_cross(dst, a, b)
#define	vec3_length(a)   sqrtf(vec3_dot(a,a))
#define	vec3_add(dst, src)
#define	vec3_subtract(dst, src)
#define	vec3_scale(dst, scale)
#define	vec3_copy(dst, src)
#define	vec3_normalize(dst)   vec3_scale(dst,1.0f / vec3_length(dst))

Variables
RETRO_BEGIN_DECLS typedef float	vec3_t [3]

Macro Definition Documentation

vec3_add

#define vec3_add	(		dst,
			src
	)

Value:

dst[0] += src[0]; \
   dst[1] += src[1]; \
   dst[2] += src[2]

vec3_copy

#define vec3_copy	(		dst,
			src
	)

Value:

dst[0] = src[0]; \
   dst[1] = src[1]; \
   dst[2] = src[2]

vec3_cross

#define vec3_cross	(		dst,
			a,
			b
	)

Value:

dst[0] = a[1]*b[2] - a[2]*b[1]; \
   dst[1] = a[2]*b[0] - a[0]*b[2]; \
   dst[2] = a[0]*b[1] - a[1]*b[0]

vec3_dot

#define vec3_dot	(		a,
			b
	)		(a[0] * b[0] + a[1] * b[1] + a[2] * b[2])

vec3_length

#define vec3_length

(

a

)

sqrtf(vec3_dot(a,a))

vec3_normalize

#define vec3_normalize

(

dst

)

vec3_scale(dst,1.0f / vec3_length(dst))

vec3_scale

#define vec3_scale	(		dst,
			scale
	)

Value:

dst[0] *= scale; \
   dst[1] *= scale; \
   dst[2] *= scale

vec3_subtract

#define vec3_subtract	(		dst,
			src
	)

Value:

dst[0] -= src[0]; \
   dst[1] -= src[1]; \
   dst[2] -= src[2]

Variable Documentation

vec3_t

RETRO_BEGIN_DECLS typedef float vec3_t[3]