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dissolving particle playground
I have some smoke I have created with particle playground that is coming out of a tailpipe. It is doing this for about 40 seconds. The thing is, I can’t figure out how to make the smoke dissipate after it has been on the screen for a little while.
The smoke doesn’t look very natural just streaming out and staying at the same strength. Is there a particle playground setting that I am missing?
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2 Replies
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Yes, I see what you mean, there no Longevity or Particle Life parameters.
From the Help Files (F1):
Persistent Property manager>Affects>Map Red To: Lifespan
Min:0
Max:5There are similar controls for Green and Blue.
This seems to cut off the particles, but rather abruptly.
I think a large mask (Inverted) on a Soils Layer above, then Feathered (F) way out looks better.
Or you could always use on of the CC Particle generators and adjust the Longevity.
With all that exhaust, another reason to go electric.
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Both the Persistent and Ephemeral property mappers have two oroperties that allow you to feather time. These are Older/Younger and Age Feather.
By feathering time, properties affected by the said mappers will animate in a non-uniformed manner towards their min/max settings. Further, the particles will fade towards their min/max settings.
With respect to Lifespan, they affect which particles will die off.
For Lifespan, set it to equal to 1 seconds for min and 2 seconds for max. Lifespan only exists in the Persistent Property Mapper. Then set Older/Younger to -2 and Age Feather to 1.
A positive Older/Younger affects older particles whiles a negative value affects younger particles. These settings should work well as a starting point for your specific needs.
Cheers
Roland Kahlenberg
https://www.broadcastGEMs.com – Adobe After Effects project files
https://www.myspace.com/rorkrgbspace
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