• Adobe After Effects Expressions

  inertial bounce and parented delay on position

  Posted by Hannes Seth on June 2, 2020 at 3:53 pm

  hi there,

  I’m looking for a way to combine two expressions for the position of a layer:
  inertial children bounce and parented delay.
  I’m guessing there’s an easy way to achieve this, but I don’t know how to do it.
  any help appreciated.

  thanks in advance

  n = 0;
amp = .04;
freq = 2.0;
decay = 3.0;

  ppos=thisLayer.parent.transform.position;
  if (ppos.numKeys > 0){
  n = ppos.nearestKey(time).index;
  if (ppos.key(n).time > time){
  n--;
  }
  }
  if (n == 0){
  ppos.velocity
  t = 100;
  }else{
  t = time - ppos.key(n).time;
  }

  if (n > 0){
  v = ppos.velocityAtTime(ppos.key(n).time - thisComp.frameDuration/10);

  value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
  }else{
  value
  }

  ------------------------------------

  delay = .05;
parent.fromWorld(toWorld(anchorPoint,time-delay))

  Hannes Seth replied 6 years, 1 month ago 1 Member · 0 Replies
• 0 Replies

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