• Adobe After Effects Expressions

  Multiple expressions on brightness parameter

  Posted by Ryan Metcalf on July 9, 2014 at 7:05 pm

  Hey all,

  Im trying to manipulate a lens flare (with added elements) by attaching parameters to null object with sliders. Im running into trouble when I try to put multiple expressions on the flare brightness, the latest expression will only work.

  I wanted one to control the master brightness and the other two sliders to control the wiggle frequency and amount. They work independently fine, but when added together I run into problems.

  Any help would be much appreciated.

  Best,
  Ryan Metcalf

  thisComp.layer("CONTROL").effect("Brightness")("Slider");
wiggle(thisComp.layer("CONTROL").effect("Flicker Frequency")("Slider"),thisComp.layer("CONTROL").effect("Flicker Amount")("Slider"))

  Dan Ebberts replied 11 years, 10 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  July 9, 2014 at 7:49 pm

  I’d try it this way:

  f = thisComp.layer(“CONTROL”).effect(“Flicker Frequency”)(“Slider”);
  a = thisComp.layer(“CONTROL”).effect(“Flicker Amount”)(“Slider”);
  w = wiggle(f,a) – value;
  thisComp.layer(“CONTROL”).effect(“Brightness”)(“Slider”) + w

  Dan

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