• Adobe After Effects Expressions

  Runing a function in nested comps in AE

  Posted by Mateo Mazzini on April 23, 2018 at 4:09 am

  Hi! I am trying to create a function which extends the outpoint of every layer in a comp.
  I need the function to detect when the layer is a precomp, enter it, and run again inside of it.
  so far, if I call the function within itself I create a loop which hangs AE.
  Any ideas on how to approach this?

  (Check line 23 ==> extendOut(activeSubC.layer(u).source) <== this is where I am crashing AE. this is not working… if you delete this line, the script works just fine for the first selected layers and it’s firsts precomps. but not for precomps inside those.

  thanks!

  app.beginUndoGroup(“extendOut”);

  //DEFINING GENERAL VARIABLES

  var activeC = app.project.activeItem;
  var activeSel = activeC.selectedLayers;

  //THE FUNCTION THAT RUNS INSIDE EVERY PRECOMP SELECTED.
  function extendOut(compToExtend){
  var activeCItems=compToExtend.numLayers;
  var activeSubC=compToExtend;
  for(u=1;u<=activeCItems;u++){
  //DEFINE THE VARIABLES FOR THE SCRIPT
  var currentSubLayer=activeSubC.layer(u);
  var inSubLay=currentSubLayer.inPoint;
  var activeSubCDuration=activeSubC.duration;

  // EXTENDING A PRECOMP
  if(activeSubC.layer(u).source instanceof CompItem){
  currentSubLayer.source.duration=activeSubCDuration-inSubLay;
  currentSubLayer.outPoint=activeSubCDuration;
  extendOut(activeSubC.layer(u).source)
  };

  // EXTENDING A VIDEO LAYER
  if(currentSubLayer.canSetTimeRemapEnabled==true && currentSubLayer.source.hasVideo==true){
  currentSubLayer.timeRemapEnabled=true;
  currentSubLayer.outPoint=activeSubCDuration;
  };

  //EXTENDING EVERYTHING ELSE

  else{
  currentSubLayer.outPoint=activeCDuration;
  }
  };
  };

  //RUN THE SCRIPT FOR THE FIRST TIME ONLY FOR SELECTED LAYERS

  for(i=0;i

  Mateo Mazzini replied 8 years ago 1 Member · 0 Replies
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