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J
Joosst
Participating Frequently
November 19, 2022
Answered

Use a second slider control to manipulate the impact of the first slider control

  • November 19, 2022
  • 1 reply
  • 1016 views

Hey there, I hope this is possible. And I hope I can explain it well.

Or maybe I'm stuck in a thought loop and someone can help me come up with something better.

 

Here's the thing:

I have a few layers that use an effect to create waves (it's called Tilda, but that's not important).

 

On top of those layers, I put an adjustment layer with a slider control, linked all the 'wave height' properties of each layer to it, and created some keyframes on that slider control to make the waves bigger and smaller. I've looped those keyframes using the loopOut() expression.

So far so good. Waves are going up and down until the end of time.

 

Now, I want the effect of that slider control to grow over time / I want the waves to become bigger and bigger. At first I want it to have no effect, at the end it should be at 100%.

 

Can I use a second slider control to manipulate the impact of the first slider control?

 

I hope anyone remotely understands what I'm trying to do here.

Thanks a million in advance.

 

Cheers,

 

Joost

This topic has been closed for replies.
Correct answer Dan Ebberts

Something like this should probably work:

s1 = thisComp.layer("Controls").effect("Wave Height")("Slider");
s2 = thisComp.layer("Controls").effect("Amplitude")("Slider");
s1*s2/100;

1 reply

Dan Ebberts
Community Expert
Dan EbbertsCommunity ExpertCorrect answer
Community Expert
November 19, 2022

Something like this should probably work:

s1 = thisComp.layer("Controls").effect("Wave Height")("Slider");
s2 = thisComp.layer("Controls").effect("Amplitude")("Slider");
s1*s2/100;
J
JoosstAuthor
Participating Frequently
November 19, 2022

Hey Dan, thanks for your super quick reply!

I think I understand what you're doing, and I'm glad it's possible.

I just don't know yet where to put it exactly and what to call everything. If I just put your expression in, I get a few errors.

If you have a quick look at this screenshot, can you tell me more precisely what needs to be done?

I would be super grateful!

Good day!

 

Dan Ebberts
Community Expert
Dan EbbertsCommunity Expert
Community Expert
November 19, 2022

Change the name of your slider to "Wave Height" and add your second slider named "Amplitude" (or change the names in the expression to match whatever your slider names are).

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