[vtkusers] How to use a vtkLODActor to draw a point cloud?

[Thales Luis Rodrigues Sabino]

I'm trying to use a vtkLODActor to draw a point cloud that has too many
points.

In order to so, after loading the data into the vtkPolyData and creating a
vtkPolyDataMapper, I use the following piece of code

m_CloudMapper->ImmediateModeRenderingOff();

m_CloudActor->SetNumberOfCloudPoints(numberOfPoints / 10);

m_CloudActor->GetProperty()->SetInterpolationToFlat();


Even with a couple million points and settings the desired update rate with
the line

m_QVTKWidget->GetInteractor()->SetDesiredUpdateRate(30.0);


I can't get the effect that Paraview offers. Even when the camera moves,
the vtkLODActor is not acting by random selecting points to draw and keep
the desired rate.

Am I missing something?

-- 
Thales Luis Rodrigues Sabino

PhD Student at PGMC-UFJF <http://www.ufjf.br/pgmc/>
Lattes <http://lattes.cnpq.br/0601030410417146> | LinkedIn
<https://br.linkedin.com/in/tluisrs> | ResearchGate
<https://www.researchgate.net/profile/Thales_Luis_Sabino>
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