[Dan Ebberts]

Sorry, you can’t use an expression to set multiple fonts in a single text layer.

[Dan Ebberts]

Just put this line:

if (myTextDoc.text == "") continue;

right before this one:

markerVal.comment = myTextDoc.text;

[Dan Ebberts]

This should get you close:

function keyframesToMarkers(){
	var myComp = app.project.activeItem;
	if (myComp == null || ! (myComp instanceof CompItem)){
		alert ("No comp active.");
		return;
	}
	if (myComp.selectedLayers.length == 0){
		alert ("No layer selected.");
		return;
	}
	var myLayer = myComp.selectedLayers[0];
	if ( ! (myLayer instanceof TextLayer)){
		alert ("Selected layer is not a text layer.");
		return;
	}
	var markerVal = new MarkerValue("");
	var mySourceText = myLayer.property("ADBE Text Properties").property("ADBE Text Document");
	var myTextDoc;
	for (var i = 1; i <= mySourceText.numKeys; i ++){
		myTextDoc = mySourceText.keyValue(i);
		markerVal.comment = myTextDoc.text;
		myLayer.property("Marker").setValueAtTime(mySourceText.keyTime(i),markerVal);
	}
}
keyframesToMarkers();

[Dan Ebberts]

What’s the expression for the anchor point?

[Dan Ebberts]

Something like this maybe:

m = marker;
val = value;
if (m.numKeys > 0){
  n= m.nearestKey(time).index;
  if (time < m.key(n).time) n--;
  if (n > 0){
    t = time - m.key(n).time;
    val = (t > m.key(n).duration) ? 0 : 100;
  }else{
    val = 0;
  }
}
val

[Dan Ebberts]

I think you actually have two separate problems. One is that if you have an expression in a sub comp referencing an animated control in a outer comp and the sub comp layer in the outer comp doesn’t start at time = 0, your expression needs to compensate for that offset start time. So your example would look like this:

C = comp("Parent");
ctrl = C.layer("CONTROL").effect("Slider Control")("Slider");
L = C.layer(thisComp.name);
ctrl.valueAtTime(time + L.startTime) < 2 ? 100 : 0

However, if you are duplicating the sub comp layer in the outer comp, that technique will only work for the top-most layer. To get it to work for any duplicates, you’d have to duplicate the sub comp in the project bin and make sure it has its own comp name. It has to do with how precomps work–if you just duplicate a precomp layer, the duplicate layer still references the same precomp and it only renders once, so it can’t render differently in different layer instances.

[Dan Ebberts]

This is a little function that should set hideShyLayers to true in every comp:

function shyAllComps(){
	for (var i = 1; i <= app.project.numItems; i++){
		if (app.project.item(i) instanceof CompItem){
			app.project.item(i).hideShyLayers = true;
		}
	}
}

[Dan Ebberts]

clamp(Math.floor(gaussRandom(0,2)),0,1) should work.

[Dan Ebberts]

Math.floor(gaussRandom(0,2)) is going to give you the occasional -1, and if that happens when idx is 0, you’ll get an illegal array index.

[Dan Ebberts]

This should give you a different color at each keyframe. It does work differently because it has to go through all previous keyframes to calculate the current color:

colors = [[1,0,0,1], //red
  [0,1,0,1], // green
  [0,0,1,1], // blue
  [1,1,0,1], // yellow
  [0,1,1,1], // cyan
  [1,0,1,1]]; // magenta
p = effect("Slider Control")("Slider");
seedRandom(index,true);
idx = Math.floor(random(colors.length));;
if (p.numKeys > 0){
  n = p.nearestKey(time).index;
  if (time < p.key(n).time) n--;
  for (i = 1; i <= n; i++){
    idx = (idx + Math.floor(random(1,colors.length)))%colors.length;
  }
}
colors[idx]