mathlib.c File Reference

Functions
void	PerpendicularVector (vec3_t dst, const vec3_t src)
void	RotatePointAroundVector (vec3_t dst, const vec3_t dir, const vec3_t point, float degrees)
float	anglemod (float a)
int VARGS	BoxOnPlaneSide (const vec3_t emins, const vec3_t emaxs, const mplane_t *p)
void	VectorVectors (const vec3_t forward, vec3_t right, vec3_t up)
void QDECL	VectorAngles (const float *forward, const float *up, float *result, qboolean meshpitch)
void QDECL	AngleVectors (const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up)
void	AngleVectorsMesh (const vec3_t angles, vec3_t forward, vec3_t right, vec3_t up)
int	VectorCompare (const vec3_t v1, const vec3_t v2)
int	Vector4Compare (const vec4_t v1, const vec4_t v2)
void	CrossProduct (const vec3_t v1, const vec3_t v2, vec3_t cross)
vec_t	Length (const vec3_t v)
float	Q_rsqrt (float number)
float QDECL	VectorNormalize (vec3_t v)
void	VectorNormalizeFast (vec3_t v)
void	VectorInverse (vec3_t v)
int	Q_log2 (int val)
void	R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3])
void QDECL	R_ConcatTransforms (const float in1[3][4], const float in2[3][4], float out[3][4])
void	R_ConcatTransformsAxis (const float in1[3][3], const float in2[3][4], float out[3][4])
void	R_ConcatRotationsPad (float in1[3][4], float in2[3][4], float out[3][4])
void	Matrix3x4_Multiply (const float *a, const float *b, float *out)
void	FloorDivMod (double numer, double denom, int *quotient, int *rem)
int	GreatestCommonDivisor (int i1, int i2)
fixed16_t	Invert24To16 (fixed16_t val)
void	VectorTransform (const vec3_t in1, const matrix3x4 in2, vec3_t out)
void	Bones_To_PosQuat4 (int numbones, const float *matrix, short *result)
void QDECL	GenMatrixPosQuat4Scale (const vec3_t pos, const vec4_t quat, const vec3_t scale, float result[12])
void	QuaternionSlerp (const vec4_t p, vec4_t q, float t, vec4_t qt)
float *	Matrix4x4_CM_NewRotation (float a, float x, float y, float z)
float *	Matrix4x4_CM_NewTranslation (float x, float y, float z)
void	Matrix4_Multiply (const float *a, const float *b, float *out)
void	Matrix3x4_RM_Transform3 (const float *matrix, const float *vector, float *product)
void	Matrix3x4_RM_Transform3x3 (const float *matrix, const float *vector, float *product)
void	Matrix4x4_CM_Transform4 (const float *matrix, const float *vector, float *product)
void	Matrix4x4_CM_Transform3x3 (const float *matrix, const float *vector, float *product)
void	Matrix4x4_CM_Transform3 (const float *matrix, const float *vector, float *product)
void	Matrix4x4_CM_Transform34 (const float *matrix, const vec3_t vector, vec4_t product)
void	Matrix4x4_CM_ModelViewMatrix (float *modelview, const vec3_t viewangles, const vec3_t vieworg)
void	Matrix4x4_CM_CreateTranslate (float *out, float x, float y, float z)
void	Matrix4x4_RM_CreateTranslate (float *out, float x, float y, float z)
void	Matrix4x4_CM_LightMatrixFromAxis (float *modelview, const vec3_t px, const vec3_t py, const vec3_t pz, const vec3_t org)
void	Matrix4x4_CM_ModelViewMatrixFromAxis (float *modelview, const vec3_t pn, const vec3_t right, const vec3_t up, const vec3_t vieworg)
void	Matrix3x4_RM_FromAngles (const vec3_t angles, const vec3_t origin, float *out)
void	Matrix3x4_RM_ToVectors (const float *in, float vx[3], float vy[3], float vz[3], float t[3])
void	Matrix4x4_RM_FromVectors (float *out, const float vx[3], const float vy[3], const float vz[3], const float t[3])
void	Matrix3x4_RM_FromVectors (float *out, const float vx[3], const float vy[3], const float vz[3], const float t[3])
void	Matrix4x4_CM_ModelMatrixFromAxis (float *modelview, const vec3_t pn, const vec3_t right, const vec3_t up, const vec3_t vieworg)
void	Matrix4x4_CM_ModelMatrix (float *modelview, vec_t x, vec_t y, vec_t z, vec_t pitch, vec_t yaw, vec_t roll, vec_t scale)
void	Matrix4x4_Identity (float *outm)
void	Matrix4x4_CM_Projection_Offset (float *proj, float fovl, float fovr, float fovd, float fovu, float neard, float fard, qboolean d3d)
void	Matrix4x4_CM_Projection_Far (float *proj, float fovx, float fovy, float neard, float fard, qboolean d3d)
void	Matrix4x4_CM_Projection_Inf (float *proj, float fovx, float fovy, float neard, qboolean d3d)
void	Matrix4x4_CM_Projection2 (float *proj, float fovx, float fovy, float neard)
void	Matrix4x4_CM_Orthographic (float *proj, float xmin, float xmax, float ymin, float ymax, float znear, float zfar)
void	Matrix4x4_CM_OrthographicD3D (float *proj, float xmin, float xmax, float ymax, float ymin, float znear, float zfar)
qboolean	Matrix4_Invert (const float *m, float *out)
void	Matrix3x3_RM_Invert_Simple (const vec3_t in1[3], vec3_t out[3])
void	Matrix3x4_Invert (const float *in1, float *out)
void QDECL	Matrix3x4_Invert_Simple (const float *in1, float *out)
void	Matrix3x4_InvertTo4x4_Simple (const float *in1, float *out)
void	Matrix3x4_InvertTo3x3 (const float *in, float *result)
void	Matrix4x4_CM_UnProject (const vec3_t in, vec3_t out, const vec3_t viewangles, const vec3_t vieworg, float fovx, float fovy)
qboolean	Matrix4x4_CM_Project (const vec3_t in, vec3_t out, const vec3_t viewangles, const vec3_t vieworg, float fovx, float fovy)
void	Matrix3_Multiply (vec3_t *in1, vec3_t *in2, vec3_t *out)
vec_t QDECL	VectorNormalize2 (const vec3_t v, vec3_t out)
float	ColorNormalize (const vec3_t in, vec3_t out)
void	MakeNormalVectors (const vec3_t forward, vec3_t right, vec3_t up)

Variables
vec3_t	vec3_origin = {0,0,0}

Function Documentation

anglemod()

float anglemod

(

float

a

)

AngleVectors()

void QDECL AngleVectors	(	const vec3_t	angles,
		vec3_t	forward,
		vec3_t	right,
		vec3_t	up
	)

AngleVectorsMesh()

void AngleVectorsMesh	(	const vec3_t	angles,
		vec3_t	forward,
		vec3_t	right,
		vec3_t	up
	)

Bones_To_PosQuat4()

void Bones_To_PosQuat4	(	int	numbones,
		const float *	matrix,
		short *	result
	)

BoxOnPlaneSide()

int VARGS BoxOnPlaneSide	(	const vec3_t	emins,
		const vec3_t	emaxs,
		const mplane_t *	p
	)

ColorNormalize()

float ColorNormalize	(	const vec3_t	in,
		vec3_t	out
	)

CrossProduct()

void CrossProduct	(	const vec3_t	v1,
		const vec3_t	v2,
		vec3_t	cross
	)

FloorDivMod()

void FloorDivMod	(	double	numer,
		double	denom,
		int *	quotient,
		int *	rem
	)

GenMatrixPosQuat4Scale()

void QDECL GenMatrixPosQuat4Scale	(	const vec3_t	pos,
		const vec4_t	quat,
		const vec3_t	scale,
		float	result[12]
	)

GreatestCommonDivisor()

int GreatestCommonDivisor	(	int	i1,
		int	i2
	)

Invert24To16()

fixed16_t Invert24To16

(

fixed16_t

val

)

Length()

vec_t Length

(

const vec3_t

v

)

MakeNormalVectors()

void MakeNormalVectors	(	const vec3_t	forward,
		vec3_t	right,
		vec3_t	up
	)

Matrix3_Multiply()

void Matrix3_Multiply	(	vec3_t *	in1,
		vec3_t *	in2,
		vec3_t *	out
	)

Matrix3x3_RM_Invert_Simple()

void Matrix3x3_RM_Invert_Simple	(	const vec3_t	in1[3],
		vec3_t	out[3]
	)

Matrix3x4_Invert()

void Matrix3x4_Invert	(	const float *	in1,
		float *	out
	)

Matrix3x4_Invert_Simple()

void QDECL Matrix3x4_Invert_Simple	(	const float *	in1,
		float *	out
	)

Matrix3x4_InvertTo3x3()

void Matrix3x4_InvertTo3x3	(	const float *	in,
		float *	result
	)

Matrix3x4_InvertTo4x4_Simple()

void Matrix3x4_InvertTo4x4_Simple	(	const float *	in1,
		float *	out
	)

Matrix3x4_Multiply()

void Matrix3x4_Multiply	(	const float *	a,
		const float *	b,
		float *	out
	)

Matrix3x4_RM_FromAngles()

void Matrix3x4_RM_FromAngles	(	const vec3_t	angles,
		const vec3_t	origin,
		float *	out
	)

Matrix3x4_RM_FromVectors()

void Matrix3x4_RM_FromVectors	(	float *	out,
		const float	vx[3],
		const float	vy[3],
		const float	vz[3],
		const float	t[3]
	)

Matrix3x4_RM_ToVectors()

void Matrix3x4_RM_ToVectors	(	const float *	in,
		float	vx[3],
		float	vy[3],
		float	vz[3],
		float	t[3]
	)

Matrix3x4_RM_Transform3()

void Matrix3x4_RM_Transform3	(	const float *	matrix,
		const float *	vector,
		float *	product
	)

Matrix3x4_RM_Transform3x3()

void Matrix3x4_RM_Transform3x3	(	const float *	matrix,
		const float *	vector,
		float *	product
	)

Matrix4_Invert()

qboolean Matrix4_Invert	(	const float *	m,
		float *	out
	)

Matrix4_Multiply()

void Matrix4_Multiply	(	const float *	a,
		const float *	b,
		float *	out
	)

Matrix4x4_CM_CreateTranslate()

void Matrix4x4_CM_CreateTranslate	(	float *	out,
		float	x,
		float	y,
		float	z
	)

Matrix4x4_CM_LightMatrixFromAxis()

void Matrix4x4_CM_LightMatrixFromAxis	(	float *	modelview,
		const vec3_t	px,
		const vec3_t	py,
		const vec3_t	pz,
		const vec3_t	org
	)

Matrix4x4_CM_ModelMatrix()

void Matrix4x4_CM_ModelMatrix	(	float *	modelview,
		vec_t	x,
		vec_t	y,
		vec_t	z,
		vec_t	pitch,
		vec_t	yaw,
		vec_t	roll,
		vec_t	scale
	)

Matrix4x4_CM_ModelMatrixFromAxis()

void Matrix4x4_CM_ModelMatrixFromAxis	(	float *	modelview,
		const vec3_t	pn,
		const vec3_t	right,
		const vec3_t	up,
		const vec3_t	vieworg
	)

Matrix4x4_CM_ModelViewMatrix()

void Matrix4x4_CM_ModelViewMatrix	(	float *	modelview,
		const vec3_t	viewangles,
		const vec3_t	vieworg
	)

Matrix4x4_CM_ModelViewMatrixFromAxis()

void Matrix4x4_CM_ModelViewMatrixFromAxis	(	float *	modelview,
		const vec3_t	pn,
		const vec3_t	right,
		const vec3_t	up,
		const vec3_t	vieworg
	)

Matrix4x4_CM_NewRotation()

float * Matrix4x4_CM_NewRotation	(	float	a,
		float	x,
		float	y,
		float	z
	)

Matrix4x4_CM_NewTranslation()

float * Matrix4x4_CM_NewTranslation	(	float	x,
		float	y,
		float	z
	)

Matrix4x4_CM_Orthographic()

void Matrix4x4_CM_Orthographic	(	float *	proj,
		float	xmin,
		float	xmax,
		float	ymin,
		float	ymax,
		float	znear,
		float	zfar
	)

Matrix4x4_CM_OrthographicD3D()

void Matrix4x4_CM_OrthographicD3D	(	float *	proj,
		float	xmin,
		float	xmax,
		float	ymax,
		float	ymin,
		float	znear,
		float	zfar
	)

Matrix4x4_CM_Project()

qboolean Matrix4x4_CM_Project	(	const vec3_t	in,
		vec3_t	out,
		const vec3_t	viewangles,
		const vec3_t	vieworg,
		float	fovx,
		float	fovy
	)

Matrix4x4_CM_Projection2()

void Matrix4x4_CM_Projection2	(	float *	proj,
		float	fovx,
		float	fovy,
		float	neard
	)

Matrix4x4_CM_Projection_Far()

void Matrix4x4_CM_Projection_Far	(	float *	proj,
		float	fovx,
		float	fovy,
		float	neard,
		float	fard,
		qboolean	d3d
	)

Matrix4x4_CM_Projection_Inf()

void Matrix4x4_CM_Projection_Inf	(	float *	proj,
		float	fovx,
		float	fovy,
		float	neard,
		qboolean	d3d
	)

Matrix4x4_CM_Projection_Offset()

void Matrix4x4_CM_Projection_Offset	(	float *	proj,
		float	fovl,
		float	fovr,
		float	fovd,
		float	fovu,
		float	neard,
		float	fard,
		qboolean	d3d
	)

Matrix4x4_CM_Transform3()

void Matrix4x4_CM_Transform3	(	const float *	matrix,
		const float *	vector,
		float *	product
	)

Matrix4x4_CM_Transform34()

void Matrix4x4_CM_Transform34	(	const float *	matrix,
		const vec3_t	vector,
		vec4_t	product
	)

Matrix4x4_CM_Transform3x3()

void Matrix4x4_CM_Transform3x3	(	const float *	matrix,
		const float *	vector,
		float *	product
	)

Matrix4x4_CM_Transform4()

void Matrix4x4_CM_Transform4	(	const float *	matrix,
		const float *	vector,
		float *	product
	)

Matrix4x4_CM_UnProject()

void Matrix4x4_CM_UnProject	(	const vec3_t	in,
		vec3_t	out,
		const vec3_t	viewangles,
		const vec3_t	vieworg,
		float	fovx,
		float	fovy
	)

Matrix4x4_Identity()

void Matrix4x4_Identity

(

float *

outm

)

Matrix4x4_RM_CreateTranslate()

void Matrix4x4_RM_CreateTranslate	(	float *	out,
		float	x,
		float	y,
		float	z
	)

Matrix4x4_RM_FromVectors()

void Matrix4x4_RM_FromVectors	(	float *	out,
		const float	vx[3],
		const float	vy[3],
		const float	vz[3],
		const float	t[3]
	)

PerpendicularVector()

void PerpendicularVector	(	vec3_t	dst,
		const vec3_t	src
	)

Q_log2()

int Q_log2

(

int

val

)

Q_rsqrt()

float Q_rsqrt

(

float

number

)

QuaternionSlerp()

void QuaternionSlerp	(	const vec4_t	p,
		vec4_t	q,
		float	t,
		vec4_t	qt
	)

R_ConcatRotations()

void R_ConcatRotations	(	float	in1[3][3],
		float	in2[3][3],
		float	out[3][3]
	)

R_ConcatRotationsPad()

void R_ConcatRotationsPad	(	float	in1[3][4],
		float	in2[3][4],
		float	out[3][4]
	)

R_ConcatTransforms()

void QDECL R_ConcatTransforms	(	const float	in1[3][4],
		const float	in2[3][4],
		float	out[3][4]
	)

R_ConcatTransformsAxis()

void R_ConcatTransformsAxis	(	const float	in1[3][3],
		const float	in2[3][4],
		float	out[3][4]
	)

RotatePointAroundVector()

void RotatePointAroundVector	(	vec3_t	dst,
		const vec3_t	dir,
		const vec3_t	point,
		float	degrees
	)

Vector4Compare()

int Vector4Compare	(	const vec4_t	v1,
		const vec4_t	v2
	)

VectorAngles()

void QDECL VectorAngles	(	const float *	forward,
		const float *	up,
		float *	result,
		qboolean	meshpitch
	)

VectorCompare()

int VectorCompare	(	const vec3_t	v1,
		const vec3_t	v2
	)

VectorInverse()

void VectorInverse

(

vec3_t

v

)

VectorNormalize()

float QDECL VectorNormalize

(

vec3_t

v

)

VectorNormalize2()

vec_t QDECL VectorNormalize2	(	const vec3_t	v,
		vec3_t	out
	)

VectorNormalizeFast()

void VectorNormalizeFast

(

vec3_t

v

)

VectorTransform()

void VectorTransform	(	const vec3_t	in1,
		const matrix3x4	in2,
		vec3_t	out
	)

VectorVectors()

void VectorVectors	(	const vec3_t	forward,
		vec3_t	right,
		vec3_t	up
	)

Variable Documentation

vec3_origin

vec3_t vec3_origin = {0,0,0}