• Adobe After Effects Expressions

  Add element opacity to two different sliders.

  Posted by Torgeir Bull on February 18, 2011 at 12:47 pm

  Hi. I’m trying to make some controls for my AE-comp. There are four different senarios I’ll have to animate, so I tried to make four different sliders to effect the layers…

  The problem is that I want the opacity of one object to get influenced by two different sliders. How do I do this? I think it’s kind of basic, but I can’t seem to figure it out.

  Worst case senario I’ll have to make four times as many layers, and pickwhip to a single layer four times, but that’s what I try to avoid.

  Any ideas?

  This is what I tried:
thisComp.layer("CONTROLS").effect("Startup")("Slider"), thisComp.layer("CONTROLS").effect("Empty_DustCollector")("Slider")

  I live frame by frame.

  Dan Ebberts

  

  replied 15 years, 2 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  February 18, 2011 at 5:25 pm

  How do the sliders interact? Did you just want to add them together? That would be like this:

  thisComp.layer(“CONTROLS”).effect(“Startup”)(“Slider”) + thisComp.layer(“CONTROLS”).effect(“Empty_DustCollector”)(“Slider”)

  or, is it more complicated than that?

  Dan

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