[vtkusers] Rendering points and large models

Will Schroeder will.schroeder at kitware.com
Wed Oct 25 13:32:39 EDT 2000

Hi Joris-

The reason that you have to create a poly vertex cell is because it
indicates to the mappers that those points referenced are to be drawn.
Points themselves are not drawn, only cells. You can always write
your own mapper to do what you want.


At 06:30 PM 10/25/00 +0200, kitware-vtk at kulnet.kuleuven.ac.be wrote:
>---  Forwarded by news2mail for "Joris Vanden Wyngaerd" <joris.vandenwyngaerd at esat.kuleuven.ac.be> ---
>I am working with very polydata (e.g. 2.000.000 points and 4.000.000
>triangles). When applying fitlers, memory usage quickly explodes. Even
>rendering with display lists gets me into trouble.
>For saving memory I would like to render the points and ignore the
>triangles. I found that I can use vtkPolyData and create a single cell with
>points 0,1,2,3, ... n-1. This seems like a waste of memory to me.
>Is it possible to draw simply draw all points in a vtkPointSet ?
>Joris Vanden Wyngaerd
>coordinates : http://www.esat.kuleuven.ac.be/~joris/personalia.html
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