[vtkusers] VTK7.1: render points as spheres does not work when coloring by cell data

Ken Martin ken.martin at kitware.com
Wed Nov 16 06:10:24 EST 2016

Thanks, this should be fixed in VTK master now.

Thanks again!

On Thu, Nov 10, 2016 at 3:10 PM, lp <lotterluke at gmail.com> wrote:

> Hello Ken,
> Thank you for your swift reply. Let me apologize for not being clear enough
> in my initial post. I will try to clarify.
> I do not want to color the vertices by cell data. I just want to turn on
> the
> tubes for the cell edges and the spheres for the vertices, while the cells
> are colored by values in a cell data array. Both cell edges and vertex
> spheres should just be colored by the constant color set with SetEdgeColor
> and SetVertexColor on the actor property.
> In the example that I send before, the sphere has a double array added to
> the cell data and set as the active scalar. The mapper is set to
> ScalarModeToUseCellData. On the property of the actor both
> RenderLinesAsTubesOn and RenderPointsAsSpheresOn are set. However, only the
> tubes are shown, the spheres for the vertices are not.
> If I comment out line 36
> sphereSource->GetOutput()->GetCellData()->SetActiveScalars("
> doubleValues");
> then both tubes and vertex spheres are shown, but of course the cells are
> not colored by their data array.
> So, I wonder why is the rendering of the vertex spheres linked to the
> active
> scalar on the cell data? Is this expected behavior?
> The example was build with VTK7.1rc2.
> Regards,
> Lukas
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Ken Martin PhD
Chairman & CFO
Kitware Inc.
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