[vtkusers] Draw point-cloud

[Thomas Obenaus]

Hello,

I have to visualize a point-cloud whose number of points varies from 10 to
20000. At the Moment I use a sphere with low resolution for each point but
the result is not satisfying (bad performance or ugly points). Is there a
possibillity to draw points in VTK like using GL_POINTS in OpenGL?

Thanks,
Thomas.
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