JRG wrote:
> 
> I could give it a try. But how do you control their rotations?
> 

I would try to position start and end point along the flow direction, for
example you could connect all positions from the last frame with those
from the current frame.  

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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