[vtkusers] Rendering large point clouds including normals

[A_n_d_y]

Hi everybody,

I worked with OpenGL and OpenSceneGraph and now I wanna use vtk - so I'm new
to vtk.
I want to display large 3D point clouds including normals (up to 1M points).
Now I'm searching the most efficient way to store and render my data. Later
on I want to use Splatting to let appear my point cloud as a surface
(perhaps vtkGaussianSplatter...?). 
So, I am searching for the best method now. Should I use vtkPoints and
vtkPolyData->SetPoints() and vtkPolyData->GetPointData()->SetNormals() or
anything else? Which mapper would be the best choice for me?
Does vtk support Vertex Arrays or Vertex Buffer Objects? 

Thanks a lot in advance!

Greets from Austria, Andy
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