[vtkusers] Cannot see imagedata behind transparent polydata

[Mathieu P]

I have attached a small image illustrating my problem.

I cannot believe VTK cannot manage object opacity !

Thanks for help.


Cordialement,

-- Mathieu PICCIN




On Wed, Mar 3, 2010 at 4:50 PM, Mathieu P <mtp.vtk at gmail.com> wrote:

> Actually i am using vtkImageActor and i change their opacity with
> setOpacity...
>
>
> Cordialement,
>
> -- Mathieu PICCIN
>
>
>
>
>
> On Wed, Mar 3, 2010 at 3:57 PM, Mathieu P <mtp.vtk at gmail.com> wrote:
>
>> Same kind of problem here :
>>
>> I have two imageData :
>>
>> Image data A loaded first
>> Image data B loaded after
>>
>> i modify the opacity to 50% for both image data.
>> i can see tough the image data B, so the last loaded, but i cannot see
>> toughthe image data A, the first loaded.
>> Modifying the opacity of the forst loaded change only its luminosity (or
>> alpha).
>>
>>
>> Cordialement,
>>
>> -- Mathieu PICCIN
>>
>>
>>
>>
>>
>> On Wed, Mar 3, 2010 at 3:03 PM, Martin Allerstorfer <
>> allerstorfer_martin at gmx.at> wrote:
>>
>>> Hi,
>>>
>>> In my rendering view I would like to show imagedata and additionally some
>>> information using transparent glyphs. But not all glyphs have the same
>>> transparency. So I change the color and alpha settings for each cell of the
>>> glyphs seperately. Unfortunately now I cannot see the volume behind the
>>> transparent polydata. Does anybody know how to solve this problem?
>>>
>>> Thanks,
>>> Martin
>>> --
>>> GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!
>>> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01
>>> _______________________________________________
>>> 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
>>>
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20100303/7cd90029/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image5227.png
Type: image/png
Size: 33055 bytes
Desc: not available
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20100303/7cd90029/attachment.png>