View Full Version : Need help slowing particles

06 June 2006, 08:21 PM
I am having trouble getting something simple to work. Hopefully someone here can help.

My scene has some particles flowing smoothly along a spline (using Speed by Icon) All this is working fine, but now I need the flow to come to a stop, as if something has plugged up the line so the particles cannot flow anymore. I tried to use drag, but then the particles leave the spline.

any suggestions?


06 June 2006, 02:39 AM
so put a deflector were u want it to stop at then in pflow use a collosion node and set it to stop instead of bouncing or keep going

06 June 2006, 03:00 AM
In the Speed By Icon operator, turn On the 'Speed Variation' option and set Min% to 100.0. As a result, you animation will be the same. Now, at the moment that you need, animate Speed Variation Min% and Max% to go to zero. It can be abrupt, or it can be smooth.

The approach and a couple of other ideas were mentioned at the Orbaz forum:

Oleg B.

06 June 2006, 03:30 AM

Exactly what I needed.

Thanks! works perfect now.

Feldy, thanks too. I had tried that earlier but it wasn't working since I either had to stop the particles instantly on collision, or give them a slower speed, which worked fine for a bit, but they would no longer follow the spline at the lower speed. Thanks though.

07 July 2006, 05:22 PM
oops i goofed ;)

09 September 2006, 06:18 AM

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09 September 2006, 06:18 AM
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