• Adobe After Effects Expressions

  Opacity Expression Based on first Position Keyframe

  Posted by Aldo Gonzalez on May 18, 2018 at 7:59 pm

  Hi All!

  I imported a scene from maya with a bunch of nulls, and the position keyframes start at different times, they were particles so the visibility keyframe did not translate with the nulls. Is there an expression to tell the layer to turn on once it lands on the first position keyframe? I also want them to stay on indefinitely tough.

  I appreciate your help!

  Best,

  Aldo.

  Dan Ebberts replied 8 years, 3 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  May 18, 2018 at 10:25 pm

  Like this maybe:

  
if (position.numKeys > 0){
if (time < position.key(1).time) 0 else 100;
}else
value


  Dan

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