n_3d.c File Reference

3D helpers, vector More...

#include "nilorea/n_3d.h"
#include "math.h"

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Functions
double	distance (VECTOR3D *p1, VECTOR3D *p2)
	compute the distance between two VECTOR3D points More...
static int	same_sign (double a, double b)
	Quickly check if two walue are the same sign or not. More...
int	update_physics_position (PHYSICS *object, double delta_t)
	Update object position, reversed. More...
int	update_physics_position_nb (PHYSICS *object, int it, double delta_t)
	Update object position componant. More...
int	update_physics_position_reverse (PHYSICS *object, double delta_t)
	Update object position, reversed. More...
int	update_physics_position_reverse_nb (PHYSICS *object, int it, double delta_t)
	Update object position componant, reversed. More...
double	vector_angle_between (VECTOR3D *vec1, VECTOR3D *vec2)
	Compute angle beteen two VECTOR3D. More...
double	vector_dot_product (VECTOR3D *vec1, VECTOR3D *vec2)
	Compute the dot product of two VECTOR3D. More...
int	vector_intersect (VECTOR3D *p1, VECTOR3D *p2, VECTOR3D *p3, VECTOR3D *p4, VECTOR3D *px)
	Compute if two vectors are intersecting or not. More...
double	vector_normalize (VECTOR3D *vec)
	Return the normalized value of vec. More...

Detailed Description

3D helpers, vector

Author

Castagnier Mickael

Version

1.0

Date

30/04/2014

Definition in file n_3d.c.

Function Documentation

same_sign()

int same_sign ( double  a, double  b  )

static

Quickly check if two walue are the same sign or not.

Parameters

a	first value
b	second value

Returns

TRUE or FALSE

Definition at line 116 of file n_3d.c.

Referenced by vector_intersect().

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