[Sidefx-houdini-list] Pop : Limit the number of particles

steven ong steve_nong at pointy.tv
Fri Mar 18 16:47:49 EDT 2016

Hi Olivier,

You can do this very easily with the old POPnet as there is a "Max # of 
Particles" parameters. If you don't need the new POPnet functionality, 
you can consider use the old version.

Else, in a Pop Kill, you can use the following expression under the Rule 


That should limit the number of particles to 1000. Hope this helps.


On 03/18/2016 13:39, Olivier Jeannel wrote:
> Hi there,
> A very simple noob question :
> In  a Popnet, using a PopSource node, I'm using Impulse Activation and
> Impulse Count.
> I would like the emission to stop when a certain ptnum is reached.
> I tried in Impulse Activation the following expression :
> if (@id >100, 0, 1)
> But no luck.
> I'm sure I've seen it somewhere inside one of the 300 tutorials I've
> watched but I'm too dumb to find it :/
> Can someone give me the correct expression ?
> Thank you :)
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