HPS::Quaternion Class Reference

## Public Member Functions

bool Equals (Quaternion const &q, int in_tolerance=32) const

Quaternion Exp () const

Quaternion Lerp (Quaternion const &in_right, float in_fraction) const

Quaternion Log () const

float Norm () const

Quaternion const & Normalize ()

bool operator!= (Quaternion const &q) const

Quaternion operator* (Quaternion const &in_right) const

Quaternion operator* (float in_right) const

Quaternion operator+ (Quaternion const &in_right) const

Quaternion operator- (Quaternion const &in_right) const

Quaternion operator/ (float in_right) const

bool operator== (Quaternion const &q) const

Quaternion (float in_w, float in_x, float in_y, float in_z)

Quaternion (Quaternion const &that)

Quaternion Slerp (Quaternion const &in_right, float in_fraction, bool in_shortest_path_only=true) const

Quaternion Spline (Quaternion const &in_previous, Quaternion const &in_next) const

Quaternion Squad (Quaternion const &in_right, Quaternion const &in_control1, Quaternion const &in_control2, float in_fraction) const

## Static Public Member Functions

static Quaternion ComputeRotation (float in_degrees, HPS::Vector const &in_axis)

static Quaternion ComputeRotation (float in_x, float in_y, float in_z)

float w

float x

float y

float z

## Friends

Quaternion operator* (float in_left, Quaternion const &in_right)

## ◆ ComputeRotation() [1/2]

 static Quaternion HPS::Quaternion::ComputeRotation ( float in_degrees, HPS::Vector const & in_axis )
inlinestatic

Computes a quaternion from a rotation about an axis.

Parameters
 in_degrees The angle in degrees to rotate. in_axis The axis to rotate about.
Returns
The resulting Quaternion object.

## ◆ ComputeRotation() [2/2]

 static Quaternion HPS::Quaternion::ComputeRotation ( float in_x, float in_y, float in_z )
inlinestatic

Computes a quaternion from a rotation around the primary axes.

Parameters
 in_x The number of degrees to rotate around the x-axis. in_y The number of degrees to rotate around the y-axis. in_z The number of degrees to rotate around the z-axis.
Returns
The resulting Quaternion object.

## ◆ Spline()

 Quaternion HPS::Quaternion::Spline ( Quaternion const & in_previous, Quaternion const & in_next ) const
inline

Calculate a control point to be used in spline interpolation

Parameters
 in_previous The control point before this in_next The control point after this
Returns
Resultant spline control point