[Sidefx-houdini-list] particle trail

Dan Seddon dan.seddon at framestore-cfc.com
Tue Sep 6 14:03:06 EDT 2005

Hi Ben

I've done stuff with splitting before - I drove both the min and max 
values at the same level (I assume the two values enable you to pivot 
your distribution, but don't know). I think if you wanted to do what you 
want to do maybe you should define a minimun speed and do something like 
prob = speedmin/speed.



> Hi there,
> Does someone know how the Birth Probability works?
> What I'm trying to do is have particles birth from other particles in 
> a way that the new particles form a evenly spaced trail.
> So a fast particle would birth more particles then a slow one in a way 
> that both would leave the same amount along the same distance.
> The amount of particles to birth per point/sec would be the length(v) 
> divided by distance between each step.
> But I can't seem to get the probability to take these values.
> Anyone any idea.. or a better method?
> cheers,
> benS
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