[vtkusers] Rotate the camera

[tao sun]

Hi Max,


This seems a good way with changing step by step.
I changed the camera and focal point position. It worked well for me.


Sun Tao


2013/12/2 Max <smapersmaper at gmail.com>

> Hi Sun Tao,
> Elevation is a tricky one, since after you rotate by more than 90 degrees,
> it gets a problem with view up vector and changes the axes, and you get
> something not intended.
> I solved it by:
> private void ElevateCamera(double angle)
>         {
>             //5 is chosen since 360 / 5 < 90 and there is a problem with
> angles bigger than 90
>             double elevationPartialShift = angle / 5;
>             for (int i = 0; i < 5; ++i)
>             {
>
> WindowRenderer.GetActiveCamera().Elevation(elevationPartialShift);
>                 WindowRenderer.GetActiveCamera().OrthogonalizeViewUp();
>             }
>         }
>
>
>
> --
> View this message in context:
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> Sent from the VTK - Users mailing list archive at Nabble.com.
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