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The camera's up-vector.
[Visual Basic .NET] Public Property UpDirection As IVector3D
[C#] public IVector3D UpDirection {get; set;}
[C++]
HRESULT get_UpDirection(
IVector3D** upVector
);
[C++]
HRESULT put_UpDirection(
IVector3D* upVector
);
[C++]
Parameters upVector [out, retval]
upVector is a parameter of type IVector3D** upVector [in]
upVector is a parameter of type IVector3D*