Quaternions Properties 
The Quaternions type exposes the following members.
Name  Description  

AxisAngle 
Get or set the equivalent axis angle representation. (x,y,z) is the rotation axis and (x,y,z) is the rotation angle in radians
 
RotationAngle 
Get the rotation angle in radian
 
RotationAxis 
Get the rotation axis of the quaternion
 
W 
The W component of the quaternion: the value for cos(rotation angle / 2)
 
X 
The X component of the vector: rotation axis * sin(rotation angle / 2)
 
Y 
The Y component of the vector: rotation axis * sin(rotation angle / 2)
 
Z 
The Z component of the vector: rotation axis * sin(rotation angle / 2)
