rs_quaternion.rsh File Reference

Functions
static void	rsQuaternionSet (rs_quaternion *q, float w, float x, float y, float z)
static void	rsQuaternionSet (rs_quaternion *q, const rs_quaternion *rhs)
static void	rsQuaternionMultiply (rs_quaternion *q, float s)
static void	rsQuaternionAdd (rs_quaternion *q, const rs_quaternion *rhs)
static void	rsQuaternionLoadRotateUnit (rs_quaternion *q, float rot, float x, float y, float z)
static void	rsQuaternionLoadRotate (rs_quaternion *q, float rot, float x, float y, float z)
static void	rsQuaternionConjugate (rs_quaternion *q)
static float	rsQuaternionDot (const rs_quaternion *q0, const rs_quaternion *q1)
static void	rsQuaternionNormalize (rs_quaternion *q)
static void	rsQuaternionMultiply (rs_quaternion *q, const rs_quaternion *rhs)
static void	rsQuaternionSlerp (rs_quaternion *q, const rs_quaternion *q0, const rs_quaternion *q1, float t)
static void	rsQuaternionGetMatrixUnit (rs_matrix4x4 *m, const rs_quaternion *q)

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Detailed Description

Quaternion routines.

Definition in file rs_quaternion.rsh.

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Function Documentation

static void rsQuaternionAdd	(	rs_quaternion *	q,
		const rs_quaternion *	rhs
	)		[static]

Add two quaternions

Parameters:

q	destination quaternion to add to
rsh	right hand side quaternion to add

Definition at line 74 of file rs_quaternion.rsh.

static void rsQuaternionConjugate

(

rs_quaternion *

q

)

[static]

Conjugates the quaternion

Parameters:

q	quaternion to conjugate

Definition at line 127 of file rs_quaternion.rsh.

static float rsQuaternionDot	(	const rs_quaternion *	q0,
		const rs_quaternion *	q1
	)		[static]

Dot product of two quaternions

Parameters:

q0	first quaternion
q1	second quaternion

Returns:

dot product between q0 and q1

Definition at line 140 of file rs_quaternion.rsh.

static void rsQuaternionGetMatrixUnit	(	rs_matrix4x4 *	m,
		const rs_quaternion *	q
	)		[static]

Computes rotation matrix from the normalized quaternion

Parameters:

m	resulting matrix
p	normalized quaternion

Definition at line 228 of file rs_quaternion.rsh.

static void rsQuaternionLoadRotate	(	rs_quaternion *	q,
		float	rot,
		float	x,
		float	y,
		float	z
	)		[static]

Loads a quaternion that represents a rotation about an arbitrary vector (doesn't have to be unit)

Parameters:

q	quaternion to set
rot	angle to rotate by
x	component of a vector
y	component of a vector
x	component of a vector

Definition at line 111 of file rs_quaternion.rsh.

static void rsQuaternionLoadRotateUnit	(	rs_quaternion *	q,
		float	rot,
		float	x,
		float	y,
		float	z
	)		[static]

Loads a quaternion that represents a rotation about an arbitrary unit vector

Parameters:

q	quaternion to set
rot	angle to rotate by
x	component of a vector
y	component of a vector
x	component of a vector

Definition at line 90 of file rs_quaternion.rsh.

static void rsQuaternionMultiply	(	rs_quaternion *	q,
		float	s
	)		[static]

Multiply quaternion by a scalar

Parameters:

q	quaternion to multiply
s	scalar

Definition at line 61 of file rs_quaternion.rsh.

static void rsQuaternionMultiply	(	rs_quaternion *	q,
		const rs_quaternion *	rhs
	)		[static]

Multiply quaternion by another quaternion

Parameters:

q	destination quaternion
rhs	right hand side quaternion to multiply by

Definition at line 163 of file rs_quaternion.rsh.

static void rsQuaternionNormalize

(

rs_quaternion *

q

)

[static]

Normalizes the quaternion

Parameters:

q	quaternion to normalize

Definition at line 149 of file rs_quaternion.rsh.

static void rsQuaternionSet	(	rs_quaternion *	q,
		float	w,
		float	x,
		float	y,
		float	z
	)		[static]

Set the quaternion components

Parameters:

w	component
x	component
y	component
z	component

Definition at line 35 of file rs_quaternion.rsh.

static void rsQuaternionSet	(	rs_quaternion *	q,
		const rs_quaternion *	rhs
	)		[static]

Set the quaternion from another quaternion

Parameters:

q	destination quaternion
rhs	source quaternion

Definition at line 48 of file rs_quaternion.rsh.

static void rsQuaternionSlerp	(	rs_quaternion *	q,
		const rs_quaternion *	q0,
		const rs_quaternion *	q1,
		float	t
	)		[static]

Performs spherical linear interpolation between two quaternions

Parameters:

q	result quaternion from interpolation
q0	first param
q1	second param
t	how much to interpolate by

Definition at line 182 of file rs_quaternion.rsh.