[vtkusers] Mirroring the scene

[Aashish Chaudhary]

You could do that.. too I am wondering if it is not really a normal
issue...but more like light transformation issue.

Are you using default renderer light?

Also can you make sure that lights you are using are scene lights? (if
not then you can set the light type to scene light using
void vtkLight::SetLightTypeToSceneLight	() )

Regards,
Aashish




On Thu, May 12, 2011 at 11:42 AM, Dirk Fortmeier
<fortmeier at imi.uni-luebeck.de> wrote:
> I tried that, but with the same results. No other ideas? I am actually
> thinking about writing a fragment shader...
>
> Regards,
> Dirk
>
> On Wed, 2011-05-11 at 08:12 -0400, Aashish Chaudhary wrote:
>> Not looking into vtk code Projection transform would not affect the normals..
>>
>> Can you try SetUserViewTransform      instead of SetUserTransform(..) and
>> see if that works for you?
>>
>>
>> On Wed, May 11, 2011 at 6:56 AM, Dirk Fortmeier
>> <fortmeier at imi.uni-luebeck.de> wrote:
>> > Hi all,
>> >
>> > for using VTK in a special Hardware setup, I need to mirror the
>> > rendering output of VTK in y-direction. My first thought was to use
>> > camera->SetUserTransform() together with a scaling transform (y-scaling
>> > set to -1) to mirror the projection matrix. Without lighting this works
>> > fine but using lighting things get messed up. To me it looks like the
>> > normals are not affected by the projection or something like that.
>> >
>> > Is there an other way to do mirroring or does someone know how to fix
>> > the issue?
>> >
>> > Regards,
>> > Dirk
>> >
>> > --
>> > Dirk Fortmeier <fortmeier at imi.uni-luebeck.de>, PhD Student
>> >
>> > Institute of Medical Informatics
>> > Graduate School for Computing in Medicine and Life Sciences
>> > University of Lübeck
>> >
>> > Building 64, 2F, Room 4
>> > Ratzeburger Allee 160
>> > 23538 Lübeck
>> > Germany
>> >
>> > Tel.:+49 (451) 500-5635
>> > Fax.:+49 (451) 500-5610
>> >
>> > _______________________________________________
>> > Powered by www.kitware.com
>> >
>> > Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>> >
>> > Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
>> >
>> > Follow this link to subscribe/unsubscribe:
>> > http://www.vtk.org/mailman/listinfo/vtkusers
>> >
>>
>>
>>
>
> --
> Dirk Fortmeier <fortmeier at imi.uni-luebeck.de>, PhD Student
>
> Institute of Medical Informatics
> Graduate School for Computing in Medicine and Life Sciences
> University of Lübeck
>
> Building 64, 2F, Room 4
> Ratzeburger Allee 160
> 23538 Lübeck
> Germany
>
> Tel.:+49 (451) 500-5635
> Fax.:+49 (451) 500-5610
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
>



-- 
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com