Do WindDirectionalSource Strength/Speed/Gust settings actually do anything?

Development World Creation
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1

Hello- I am trying to make a flag flutter in the wind using Apex Clothing and a WindDirectionalSource actor. I have the flag working, but I am having a hell of a time fine tuning it to look natural.

Do the Strength, Speed, and Gust settings in the Wind actor actually influence the motion of my Apex cloth? Even if I change their default values of ~.1 to 1000, I don’t see any difference. The only way I seem to be able to modify the cloth motion is to change the Apex Clothing > Physical Material settings in my 3DSMax modifier.

Just wondering if there’s a more appropriate way to go about this…thanks for your time.

2

So I found out what’s going wrong here. In the current version (4.8.3) the strength and speed values do not work correctly unless they are negative values. So if any one else runs into this problem, just use negative speed and strength values, and spin your wind direction actor around 180.

The gust variables still do not work, even when negative.

Source: Simple flag with wind - Asset Creation - Unreal Engine Forums
(The relative information is in reply #18 and #19)