[vtkusers] Color flickering

[Ruben van Staden]

Hey Ken

Thanks for the reply.
Is it possible to use mappers and still write to a VTK file using:

vtkSmartPointer<vtkXMLUnstructuredGridWriter> writer =
vtkSmartPointer<vtkXMLUnstructuredGridWriter>::New();

Regards
Ruben

On Fri, Oct 7, 2016 at 2:41 PM, Ken Martin <ken.martin at kitware.com> wrote:

> If they are in two different mappers and you are using the new OpenGL2
> backend, then you can solve it in VTK by calling
>
> SetResolveCoincidentTopologyToPolygonOffset();
> SetRelativeCoincidentTopologyPolygonOffsetParameters(-2,-2);
>
> on one of the mappers.  If they are in the same mapper then, you cannot
> solve it in VTK as the two polygons occupy exactly the same space, but due
> to driver specific rendering implementations there may be some differences
> frame to frame in what pixels end up on top.
>
> Hope that helps
> Ken
>
>
>
>
>
> On Fri, Oct 7, 2016 at 7:38 AM, Ruben van Staden <rubenvanstaden at gmail.com
> > wrote:
>
>> Dear Readers
>>
>> I have two overlapping polyhedrons that each have a different color.
>> When I plot them using Paraview, the part of the structure that overlaps
>> starts flickering as I rotate the structure. Almost like the program is
>> confused
>> to what coloring to add to that part, since they overlap.
>>
>> Is there a way to solve this, somehow using VKT, or will I have to
>> do polyhedron boolean operations?
>>
>> Regards
>> Ruben
>>
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>
>
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