---

vec3_c Class Reference

3d vector class

#include <vector.h>

Public Methods
	vec3_c ()
	standard constructor
	vec3_c (const vec3_c &)
	copy constructor
	vec3_c (const vec3_t)
	vector from vec3_t
	vec3_c (float, float, float)
	vector from floats
virtual	~vec3_c ()
	destructor
	operator const float * ()
	floats from vector
void	set (float x, float y, float z)
	set vector coordinates
void	set_component (int n, float x)
	set component n to value x.
void	clear ()
	set to (0,0,0)
float	length ()
	determine the length of a vector
float	length_squared ()
	determine the length of a vector
vec3_c	operator- (const vec3_t)
	subtract vectors
vec3_c	operator * (const vec3_t)
	scale by vector
vec3_c	operator= (const vec3_t)
	assignment
bool	operator== (const vec3_t)
	comparison
vec3_c	cross (const vec3_t v)
	create cross product
float	dot (const vec3_t v)
	create dot product
vec3_c	rotate (const vec3_t angles)
	rotate a vector
vec3_c	project_on_plane (const vec3_t normal)
vec3_c	perpendicular ()
vec3_c	rotate_vec (const float degrees, const vec3_t dir)
void	get_view_from_angles (vec3_c &forward, vec3_c &right, vec3_c &up)
ushort	pack_normal ()
	pack a normal
Static Public Methods
vec3_c	unpack_normal (ushort in)
	unpack a normal
vec3_c	bezier_patch (const patch_t patch, float u, float v)
	get a point on a patch
vec3_c	bezier_spline (const spline_t spline, const float frac)
vec3_c	hermite (const vec3_t p1, const vec3_t t1, const vec3_t p2, const vec3_t t2, const float frac)
vec3_c	linear (const vec3_t p1, const vec3_t p2, const float frac)
Protected Attributes
vec3_t	vec
	the data

---

Member Function Documentation

vec3_c bezier_spline (  const spline_t    spline, const float    frac )  [static]

bezier interpolation Interpolates between two vectors using bezier spline interpolation. Parameters: frac  fraction Definition at line 311 of file m_vector.cpp. References spline_t.

void get_view_from_angles (  vec3_c &    forward, vec3_c &    right, vec3_c &    up )

convert angles to vectors Converts angles (yaw, pitch, roll) to view vectors (forward, right, up) Parameters: forward  forward vector right  right vector up  up vector Definition at line 166 of file m_vector.cpp. References ANGLE_PITCH, ANGLE_ROLL, ANGLE_YAW, and DEG2RAD. Referenced by particle_emitter_c::update().

vec3_c hermite (  const vec3_t    p1, const vec3_t    t1, const vec3_t    p2, const vec3_t    t2, const float    frac )  [static]

hermite interpolation Interpolates between two vectors using hermite interpolation. Parameters: p1  point 1 t1  tangent 1 p2  point 2 t2  tangent 2 frac  fraction Definition at line 631 of file m_vector.cpp. References set_component(), and vec3_t. Referenced by path_c::get_pos().

float length (    )

Returns the distance of this vector from the origin / its magnitude. Definition at line 398 of file m_vector.cpp. References vec, VECT_X, VECT_Y, and VECT_Z.

float length_squared (    )

Returns the squared distance of this vector from the origin. Definition at line 406 of file m_vector.cpp. References vec, VECT_X, VECT_Y, and VECT_Z. Referenced by unpack_normal().

vec3_c linear (  const vec3_t    p1, const vec3_t    p2, const float    frac )  [static]

linear interpolation Interpolates between two vectors using linear interpolation. Parameters: p1  point 1 p2  point 2 frac  fraction Definition at line 611 of file m_vector.cpp. References _interpolate_float_linear(), set_component(), and vec3_t. Referenced by md2_c::set_frame(), and kmf_c::set_frame().

ushort pack_normal (    )

Uses this vector as a normal and packs it into a ushort. Definition at line 198 of file m_vector.cpp. References vec.

vec3_c perpendicular (    )

get a perpendicular vector Gets a vector that is perpendicular to the input vector. Definition at line 84 of file m_vector.cpp. References normalize(), project_on_plane(), and vec3_t. Referenced by rotate_vec().

vec3_c project_on_plane (  const vec3_t    normal )

project vector on a plane Project a vector onto a plane Parameters: normal  plane normal Definition at line 61 of file m_vector.cpp. References vec3_t. Referenced by perpendicular().

vec3_c rotate (  const vec3_t    angles )

Parameters: angles  yaw pitch roll Definition at line 570 of file m_vector.cpp. References ANGLE_PITCH, ANGLE_ROLL, ANGLE_YAW, DEG2RAD, and vec3_t.

vec3_c rotate_vec (  const float    degrees, const vec3_t    dir )

rotate a point around vector Rotates a point around a given axis. Parameters: degrees  rotation angles dir  rotation axis Definition at line 117 of file m_vector.cpp. References cross(), DEG2RAD, matrix3_mult(), matrix3_t, perpendicular(), and vec3_t. Referenced by particle_type_c::draw(), and particle_emitter_c::update().

vec3_c unpack_normal (  ushort    in )  [static]

Unpacks a packed normal from a ushort and returns it. Parameters: in  input short Definition at line 210 of file m_vector.cpp. References length_squared(), normalize(), set(), set_component(), and vec. Referenced by kmf_c::set_frame().

---

The documentation for this class was generated from the following files:

• vector.h
• m_vector.cpp

---