• Adobe After Effects Expressions

  Trigger a keyframe animation with a conditional

  Posted by Riccardo Sinti on December 2, 2015 at 10:13 pm

  I have a stroked path animating on with trim paths keyframed on the “End” parameter from 0% – 100%.
  I have other paths that branch off the main path which animate on in the same way.
  So branch one starts when main path hits 25%.
  I’m looking for an expression on branch 1’s “End” parameter, which is keyframed between 0% – 100%,
  that will say if “end” main path = 25% start the keyframed animation.

  this way I can adjust the timing of the main path without having to slide branch 1’s keyframes to adjust and I can do this for other branches as well.

  Thanks in advance!

  Riccardo Sinti replied 10 years, 5 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Kalleheikki Kannisto

  December 3, 2015 at 12:31 pm

  How about linear(Pick End parameter here, 25, 100, 0, 100)
• 

  Riccardo Sinti

  December 3, 2015 at 4:22 pm

  Needs more than that but thanks!
  After some searching I started playing around with this this but it doesn’t work

  start = thisComp.layer(“MAIN_PATH”).content(“Group1”).content(“Trim Paths 1”).end;

  t1 = key(1).time;
  t2 = key(2).time;
  if (start = 27) t = linear(time,t1,t2) else t = 0;
  valueAtTime(t)

  there are some elements here that I’m sure are necessary like the variables but not sure where to take it.

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