GLM_EXT_quaternion_common

Provides common functions for quaternion types. More...

Functions
template<typename T , qualifier Q>
GLM_FUNC_DECL qua< T, Q >	conjugate (qua< T, Q > const &q)
	Returns the q conjugate. More...
template<typename T , qualifier Q>
GLM_FUNC_DECL qua< T, Q >	inverse (qua< T, Q > const &q)
	Returns the q inverse. More...
template<typename T , qualifier Q>
GLM_FUNC_DECL vec< 4, bool, Q >	isinf (qua< T, Q > const &x)
	Returns true if x holds a positive infinity or negative infinity representation in the underlying implementation's set of floating point representations. More...
template<typename T , qualifier Q>
GLM_FUNC_DECL vec< 4, bool, Q >	isnan (qua< T, Q > const &x)
	Returns true if x holds a NaN (not a number) representation in the underlying implementation's set of floating point representations. More...
template<typename T , qualifier Q>
GLM_FUNC_DECL qua< T, Q >	lerp (qua< T, Q > const &x, qua< T, Q > const &y, T a)
	Linear interpolation of two quaternions. More...
template<typename T , qualifier Q>
GLM_FUNC_DECL qua< T, Q >	mix (qua< T, Q > const &x, qua< T, Q > const &y, T a)
	Spherical linear interpolation of two quaternions. More...
template<typename T , qualifier Q>
GLM_FUNC_DECL qua< T, Q >	slerp (qua< T, Q > const &x, qua< T, Q > const &y, T a)
	Spherical linear interpolation of two quaternions. More...

Detailed Description

Provides common functions for quaternion types.

Include <glm/ext/quaternion_common.hpp> to use the features of this extension.

See also

GLM_EXT_scalar_common

GLM_EXT_vector_common

GLM_EXT_quaternion_float

GLM_EXT_quaternion_double

GLM_EXT_quaternion_exponential

GLM_EXT_quaternion_geometric

GLM_EXT_quaternion_relational

GLM_EXT_quaternion_trigonometric

GLM_EXT_quaternion_transform

Function Documentation

GLM_FUNC_DECL qua<T, Q> glm::conjugate

(

qua< T, Q > const &

q

)

Returns the q conjugate.

Template Parameters

T	A floating-point scalar type
Q	A value from qualifier enum

GLM_FUNC_DECL qua<T, Q> glm::inverse

(

qua< T, Q > const &

q

)

Returns the q inverse.

Template Parameters

T	A floating-point scalar type
Q	A value from qualifier enum

GLM_FUNC_DECL vec<4, bool, Q> glm::isinf

(

qua< T, Q > const &

x

)

Returns true if x holds a positive infinity or negative infinity representation in the underlying implementation's set of floating point representations.

Returns false otherwise, including for implementations with no infinity representations.

Template Parameters

T	A floating-point scalar type
Q	A value from qualifier enum

GLM_FUNC_DECL vec<4, bool, Q> glm::isnan

(

qua< T, Q > const &

x

)

Returns true if x holds a NaN (not a number) representation in the underlying implementation's set of floating point representations.

Returns false otherwise, including for implementations with no NaN representations.

/!\ When using compiler fast math, this function may fail.

Template Parameters

T	A floating-point scalar type
Q	A value from qualifier enum

GLM_FUNC_DECL qua<T, Q> glm::lerp	(	qua< T, Q > const &	x,
		qua< T, Q > const &	y,
		T	a
	)

Linear interpolation of two quaternions.

The interpolation is oriented.

Parameters

x	A quaternion
y	A quaternion
a	Interpolation factor. The interpolation is defined in the range [0, 1].

Template Parameters

T	A floating-point scalar type
Q	A value from qualifier enum

GLM_FUNC_DECL qua<T, Q> glm::mix	(	qua< T, Q > const &	x,
		qua< T, Q > const &	y,
		T	a
	)

Spherical linear interpolation of two quaternions.

The interpolation is oriented and the rotation is performed at constant speed. For short path spherical linear interpolation, use the slerp function.

Parameters

x	A quaternion
y	A quaternion
a	Interpolation factor. The interpolation is defined beyond the range [0, 1].

Template Parameters

T	A floating-point scalar type
Q	A value from qualifier enum

See also

- slerp(qua<T, Q> const& x, qua<T, Q> const& y, T const& a)

GLM_FUNC_DECL qua<T, Q> glm::slerp	(	qua< T, Q > const &	x,
		qua< T, Q > const &	y,
		T	a
	)

Spherical linear interpolation of two quaternions.

The interpolation always take the short path and the rotation is performed at constant speed.

Parameters

x	A quaternion
y	A quaternion
a	Interpolation factor. The interpolation is defined beyond the range [0, 1].

Template Parameters

T	A floating-point scalar type
Q	A value from qualifier enum