[vtkusers] Isosurface opacity problem

Sebastien Jourdain sebastien.jourdain at kitware.com
Wed Dec 15 09:21:02 EST 2010


How did you defined your unstructured grid ? It seems that some inner
surface are detected...
This could happen if you duplicate the points so each cell has its own points ?

Try to load your data into ParaView and see if you can reproduce the problem.

Seb

2010/12/15 이현철 <basalt76 at gmail.com>:
> Sorry to interrupt you again.
>
> I attach two images.
>
> Before and after adding depth sorting.
> There are some differences.
>
> My graphics card seems not to support depth peeling.
>
> Thank you very mush.
>
> Lee.
>
> 2010/12/15 Sebastien Jourdain <sebastien.jourdain at kitware.com>
>>
>> You should enable depth peeling on the renderer to fix most of the
>> artefact. But the rendering will be slower.
>>
>> Seb
>>
>> On Tue, Dec 14, 2010 at 10:01 AM, 이현철 <basalt76 at gmail.com> wrote:
>> > Dears
>> >
>> > I visualized isosurface using vtkMarchingContourFilter from
>> > vtkUnstructuredGrid.
>> >
>> > When the opacity is 1.0 , created picture looks normal.
>> >
>> > But when i adjust opacity to below 1.0, the picture has speckles depends
>> > on the position.
>> >
>> > Do you have any solution ?
>> >
>> > I'll really appreciate it.
>> >
>> > Attached images
>> >
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