Quaternion class

Quaternion is usually used to perform rotation in computer graphics.

The Quaternion type exposes the following members:

Constructor	Description
init	Initializes a new instance of the `Quaternion` class.
init	Constructs a new instance of Quaternion

Property	Description
length	Gets the length of the quaternion
IDENTITY	The Identity quaternion.
w	The w component.
x	The x component.
y	The y component.
z	The z component.

Method	Description
from_euler_angle	Creates quaternion from given Euler angle
from_euler_angle	Creates quaternion from given Euler angle
conjugate	Returns a conjugate quaternion of current quaternion
inverse	Returns a inverse quaternion of current quaternion
dot	Dots product
euler_angles	Converts quaternion to rotation represented by Euler angles All components are in radian
normalize	Normalize the quaternion
to_angle_axis
concat	Concatenate two quaternions
from_angle_axis	Creates a quaternion around given axis and rotate in clockwise
from_rotation	Creates a quaternion that rotate from original to destination direction
to_matrix	Convert the rotation presented by quaternion to transform matrix.
interpolate	Populates this quaternion with the interpolated value between the given quaternion arguments for a t between from and to.