[vtkusers] Elevation and Azimuth Camera movements

[Patrick Neumann]

Hi,
you can check the code in vtkInteractorStyleTrackballCamera for azimuth and elevation rotation.

I think after the call of cam->Elevation(-90) the call of cam->OrthogonalizeViewUp() could do
the job. I do the same also after cam->Azimuth(x). In addition I then call
renderer->ResetCameraClippingRange().

Hope that helps
Regards Patrick


James A Galbraith/GALBJA/CC01/INEEL/US schrieb:

> I'm having problems getting my camera pointed in the right direction.  I've
> got a slice of terrain data and I'm trying to get the camera to show a side
> view of the slice.  So, I dropped the elevation to ground level (Elevation
> (-90)) followed by changing the azimuth (Azimuth(angle)) to hopefully swing
> it around to be perpendicular to the slice.  It appears that the Azimuth
> operation is having no effect.  I have dumped the camera position after
> each operation and it doesn't change after the Azimuth operation.  I
> swapped the operations just to see what happens.  The Azimuth operation had
> an effect, but then the Elevation operation seemed to override anything the
> Azimuth did.  Am I crazy or am I doing something wrong here?  Any other
> ways of doing this?
>
> Thanks
>
> James Galbraith
> Idaho National Engineering and Environmental Laboratory (INEEL)
> galbja at inel.gov
>
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--
Patrick Neumann
Universitaetsklinikum Benjamin Franklin
WE 10, FU Berlin, Hindenburgdamm 30, D 12200 Berlin
Tel: +49 30 8445 4503 / Fax: 4510 / Email: neumann at medizin.fu-berlin.de