pgQuat Struct Reference
[pgMath -- Mathematics module]

A quaternion. More...

#include <pg_quat.h>

List of all members.

Public Member Functions
	pgQuat ()
	Constructs a pgQuat.
	pgQuat (r32 x_, r32 y_, r32 z_, r32 w_)
	Constructs and initialize a pgQaut from the specified xyzw coordinates.
void	set (r32 x_, r32 y_, r32 z_, r32 w_)
	Sets all components from the specified xyzw coordinates.
pgQuat	slerp (const pgQuat &to, r32 ratio) const
	Returns a pgQuat which is interpolated between this pgQuat and an another pgQuat by the specified ratio, using spherical linear interpolation.
pgMat	toMat (const pgVec &trans) const
	Returns a pgMat which is converted from the axes of this pgQuat and the translation of the specified pgVec.
Static Public Member Functions
static pgQuat	fromMat (const pgMat &mat)
	Returns a pgQuat which is converted from the specified pgMat.
Public Attributes
r32	x
	The x-coordinate.
r32	y
	The y-coordinate.
r32	z
	The z-coordinate.
r32	w
	The w-coordinate.

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Detailed Description

A quaternion.

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Constructor & Destructor Documentation

pgQuat::pgQuat	(	r32	x_,
		r32	y_,
		r32	z_,
		r32	w_
	)

Constructs and initialize a pgQaut from the specified xyzw coordinates.

Parameters:

[in]	x_	The x-coordinate.
[in]	y_	The y-coordinate.
[in]	z_	The z-coordinate.
[in]	w_	The w-coordinate.

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Member Function Documentation

static pgQuat pgQuat::fromMat

(

const pgMat &

mat

)

[static]

Returns a pgQuat which is converted from the specified pgMat.

Parameters:

[in]

mat

A pgMat, whose translation is ignored.

Returns:

A pgQuat which is converted from the specified pgMat.

void pgQuat::set	(	r32	x_,
		r32	y_,
		r32	z_,
		r32	w_
	)

Sets all components from the specified xyzw coordinates.

Parameters:

[in]	x_	The x-coordinate.
[in]	y_	The y-coordinate.
[in]	z_	The z-coordinate.
[in]	w_	The w-coordinate.

pgQuat pgQuat::slerp	(	const pgQuat &	to,
		r32	ratio
	)			const

Returns a pgQuat which is interpolated between this pgQuat and an another pgQuat by the specified ratio, using spherical linear interpolation.

Parameters:

[in]	to	An another pgQuat.
[in]	ratio	The value which indicates how far to interpolate between two pgQuats. This value is clamped between 0.0f and 1.0f.

Returns:

A pgQuat which is interpolated between two pgQuats.

pgMat pgQuat::toMat

(

const pgVec &

trans

)

const

Returns a pgMat which is converted from the axes of this pgQuat and the translation of the specified pgVec.

Parameters:

[in]

trans

The translation.

Returns:

A pgMat which is converted from the axes of this pgQuat and the translation of the specified pgVec.

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Member Data Documentation

r32 pgQuat::w

The w-coordinate.

r32 pgQuat::x

The x-coordinate.

r32 pgQuat::y

The y-coordinate.

r32 pgQuat::z

The z-coordinate.

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The documentation for this struct was generated from the following file:

• pg_quat.h