"Decay" meaning

[Alexx31]

Hello,

several times I have played with decay and could not see any effect.

Currently I am testing a scene with tyWind.

But whichever other value I type in, whether a billion cm or 1cm, it makes no difference.
When I set it to 0,1 cm (which is ridiculous in a scene of 100 cm width), I can see a difference when I compare to 0,02 cm.
0,1cm is less strong influence of the wind than 0,02cm

Is maybe the decay reducing only the strength per frame?

I was thinking it is also a kind of fall-of

Thanks

[d4rk3lf]

Yes, it's something like attenuation for the lights.
With decay you are reducing wind strength over the distance (range indicator is the option to see decay visually)
If Decay is zero, then you can consider, it's turned of.

Now, 2 things to keep in mind:
1) Sometimes changing parameters on the Tywind won't be noticeable on the particles (won't be visually updated), until you refresh Tyflow particles (inside Tyflow window, right click - refresh)
2) Since forces are constantly adding to the speed (stronger and stronger all the time), it's often a good idea to place slow operator (by default of 5), and they will act in more predictable manner, meaning, after they reach certain velocity, the velocity will remain the same afterwards (and decay can be used here to further influence how much particles will travel).

[Alexx31]

Yes, it's something like attenuation for the lights....

Thanks, I will find out then!

[tyFlow]

It's identical to the decay parameter in legacy gravity/wind spacewarps.