[vtkusers] How to use VTK for many small datasets ... ?

[Lisa Avila]

If they all were truly spheres then you would only need 1 polydata and 1000 
actors (where the actors are used to position and scale the data). In terms 
of memory consumption this would be best. In terms of rendering performance 
you might be better glyphing the sphere (create one polydata with the 
centers of the spheres as points and use a glyph filter to place the 
sphere). If your underlying geometry is different for each location, then 
you would either have to use 1000 actors / mappers / input data or create 
your own composite actor that had your desired behavior.

Lisa


At 02:27 PM 9/18/2003, tutu lamotte wrote:
>OK... so VTK should be memory efficient for huge
>datasets ?
>
>Let says i must display 10000 spheres based on one of
>the 2 following mechanism. Which one is recommended?
>
>1) 10000 sphere polydatas connected to 10000 actors
>2) 10000 sphere polydatas connected to 1
>vtkAppendPolydata and one actor.
>
>Surprisingly, solution 2 takes up to 3 times more
>memory space!
>
>Any suggestions?
>
>
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