[vtkusers] retrieving orientation of a object in a 3D scene in real-time

[Simon DROUIN]

Vincent Daanen wrote:

> Hi all,
>
> I'm vizualizing a 3D shape in a vtkRenderer. I can move it but I can't 
> find
> the way to retrieve the information about the orientation in real-time 
> ie while moving it.
>
> I guess I should use the vtkRenderWindowInteractor but I don't know 
> how to do
>
> Can anybody help me ?
>
> Thanks
>
> Vince
>
One way of doing that would be to add an observer on the vtkRenderWindow 
and catch the Start or End event. The observer will then be called every 
time the window is rendered. Then, you can grab a pointer to the actor 
who's orientation you want to track and call GetOrientation().

Hope it can help.

Simon.