A 4-element unit quaternion represented by double precision floating point w,x,y,z coordinates. A quaternion is a compact and convenient way to represent orientations and rotations in 3D space.

Add	AddInPlace	Conjugate	ConjugateInPlace
Copy	EpsilonEquals	Equals	Get
Get2	GetXYZAngleValues	GetXYZAngleValues2	Invert
InvertInPlace	Length	LengthSquared	Mul
MulInPlace	Negate	NegateInPlace	Normalize
Set	SetFromXYZAngleValues	SetIdentity	Slerp
Sub	SubInPlace

Value	W	X	Y
Z

JScript Example

var oRotation = XSIMath.CreateRotation( XSIMath.DegreesToRadians( 90 ), 0, 0 ) ;
var oQuaternion = XSIMath.CreateQuaternion() ;
oRotation.GetQuaternion( oQuaternion ) ;
Application.LogMessage( "Quaternion for 90 degree x rotation is " 
				+ oQuaternion.W + "," 
				+ oQuaternion.X + "," 
				+ oQuaternion.Y + "," 
				+ oQuaternion.Z ) ;
//Output:
//INFO : Quaternion for 90 degree x rotation is 0.7071067811865476,0.7071067811865475,0,0

SIQuaternion.Set SIVector3 SIMatrix3.GetQuaternion SIMatrix3.SetFromQuaternion SIMatrix4 SIRotation.GetQuaternion SIRotation.SetFromQuaternion SITransformation.GetRotationQuaternion SITransformation.SetRotationFromQuaternion XSIMath.CreateQuaternion