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