[Dan Ebberts]

Maybe the first line needs to be:

var myType = myLayers[i].effect("Make Selection")("Type").value;

[Dan Ebberts]

There are a number of different options. One would be to use the slider to set the duration of the out animation, like this time remapping expression:

dur = effect("Slider Control")("Slider");
t1 = key(1).time;
t2 = t1 + dur;
v1 = key(1).value;
v2 = key(2).value;
linear(time,t1,t2,v1,v2)

[Dan Ebberts]

The only tool expressions might have for something like that would be sampleImage(), but it would be ridiculously slow. You could do it using the plugin API, but that’s a steep learning curve. You’d probably be better off marking such trigger points by hand with layer markers or keyframes and have the expression triggered that way.

[Dan Ebberts]

So is your intention for the expression to accommodate all 16 permutations of multiple checkboxes selected or do you want it to work like radio buttons, where only one of the four options can be selected at a time? If it’s radio buttons, you’d be better off using a Dropdown Menu Control and an expression structured like this (I don’t think this is right, but I don’t really understand how it’s supposed to work):

menu = effect("Dropdown Menu Control")("Menu").value;
switch (menu){
  case 1:
    speedMultiplier = -5;
    y = value[0];
    x = value[1] + time * speedMultiplier;
    break;
  case 2:
    speedMultiplier = 5;
    y = value[0];
    x = value[1] + time * speedMultiplier;
    break;
  case 3:
    speedMultiplier = 5;
    x = value[0];
    y = value[1] + time * speedMultiplier;
    break;
  case 4:
    speedMultiplier = -5;
    x = value[0];
    y = value[1] + time * speedMultiplier;
    break;
  default:
    x = value[0];
    y = value[1];
    break;
}
[x,y]

[Dan Ebberts]

Do you just need to split it into 2 pieces if it’s too long? If so, see if this works for you:

txt = thisComp.layer("Captions").text.sourceText.value;
dist = thisComp.layer("Captions").sourceRectAtTime().width;
Wguide = thisComp.layer("width guide").effect("Slider Control")("Slider")
len = txt.length;
outStr = txt;
if (dist > Wguide){
  if (len%2){
    i = Math.floor(len/2);
    j = i;
  }else{
    j = len/2;
    i = j - 1;
  }
  while (i >= 0 && j < len){
    if (txt[j] == " "){
      outStr = txt.substr(0,j) + "\r" + txt.substr(j+1);
      break;
    }
    if (txt[i] == " "){
      outStr = txt.substr(0,i) + "\r" + txt.substr(i+1);
      break;
    }
    i--;
    j++;
  }
}
outStr

[Dan Ebberts]

You might want to add a ratio slider that would get used when the checkbox is on.

[Dan Ebberts]

I’m assuming this expression would be applied to the height slider, is that correct? If so, then I think your ratio is backwards (should be height/width) but I don’t think it will work because both sides of your conditional calculate out to the same value (which is the current value of the height slider).

[Dan Ebberts]

I’m assuming this is a source text expression, correct? If so, change it to this:

m = thisLayer.marker;
n = 0;
val = "";
if (m.numKeys > 0){
  n = m.nearestKey(time).index;
  if (m.key(n).time > time) n--;
}
if (n > 0){
  val = m.key(n).comment;
}
val

and add this opacity expression:

m = thisLayer.marker;
f = framesToTime(5);
n = 0;
val = 0;
if (m.numKeys > 0){
  n = m.nearestKey(time).index;
  if (m.key(n).time > time) n--;
}
if (n > 0){
  t = time - m.key(n).time;
  d = m.key(n).duration;
  val = linear(t,d,d+f,100,0);
}
val

[Dan Ebberts]

Ah, the second expression has a typo. Try it this way:

x= thisComp.layer("TITRE").sourceRectAtTime(-1).width;
y= thisComp.layer("TITRE").sourceRectAtTime(-2).width;
v= (1920-(x*.56))/-2+1366;
w= (1920-(y*.56))/-2+1366;
y > x ? w : v+20

[Dan Ebberts]

If you do the negative time trick, so just your first line shows up at time = -1 and the just the second line shows up at time = -2 (with a source text expression like this):

if (time < 0){
  txt = value.split("\r");
  if (txt.length > 1 && time < -1.5){
    txt[1];
  }else{
    txt[0];
  }
}else
  value

Then your expression, modified like this should work:

x= thisComp.layer("TITRE").sourceRectAtTime(-1).width;
y= x= thisComp.layer("TITRE").sourceRectAtTime(-2).width;
v= (1920-(x*.56))/-2+1366;
w= (1920-(y*.56))/-2+1366;
y > x ? w : v+20