After Effects Position Expression

[Dan Ebberts]

I think we need more info. Please be more descriptive about what you’re trying to do.

[Mirco Lanz]

I want to build a Lightning Effect with “advanced lighting” The idea is that i have a fixed point for the beginning of the Lightning and the End is jumping to different tracked positions in the room.

[Dan Ebberts]

This should randomly select the position of any layer except the one with the expression:

minDur = .5;
maxDur = 1.5;
t = tPrevT = inPoint;
seedRandom(index,true);
while (t <= time){
  tPrev = t;
  t += random(minDur,maxDur);
}
seedRandom(tPrev,true);
L = [];
for (i = 1; i <= thisComp.numLayers; i++){
  if (i == index) continue;
  L.push(i);
}
fromComp(thisComp.layer(L[Math.floor(random(L.length))]).transform.position)

[Mirco Lanz]

Thanks! I will try this tomorrow at work 🙂

[Mirco Lanz]

I tested your expression today and it works wonderfully! Thank you very much! You have helped me a lot ❤