I get the feeling you don’t really understand how AE and expressions work.
You can use sampleImage() to get the colour of the pixels at a point on the layer, and then check to see if they are green. To check if another layer is completely inside the green area you would find its bounding box and check each corner to see if it was…

Read more

The time variable in the precomp is equal to the time that the playhead from the parent comp is at, relative to the precomp. So if the main comp contains the precomp starting at 2:00 the value of the time variable for the precomp at the beginning of the parent comp is -2.

To access the parent comp’s time we need to add the precomp’s in-point…

Read more

Since expressions aren’t able to store previous values, to achieve something like this you have to calculate the results for every frame up to the current one.

e.g.

calculatedPos = thisProperty.valueAtTime(0); //initial (blue) value
for (let f = 0; f < time; f += thisComp.frameDuration){
    if (calculatedPos[0] % 2 > 0){ //x is odd
…

Read more

You can’t change the current time of a comp with expressions, you can only set the value of the layer properties that they’re applied to.

You can use scripts to change the time, but that won’t have any effect at render time, it would be as if you changed the time yourself with the UI.

When solid 1 is 100% scale, solid 2 is 50% and vice versa. So we can set the scale of the second solid thus:

[150, 150]- thisComp.layer(“Shape Layer 1”).transform.scale

To make its left edge line up with the right edge of solid 1, we can just put the anchor points of the solids at the bottom left and bottom right respectively. The easiest way to set…

Read more

ESTK is deprecated, Adobe recommends you use VSCode and the Extendscript Debugger add-on.

Not quite sure what you mean when you say

The comps themselves don’t procedurally shift over time. I’ll still have
to manually shift every layer to the modified transform properties

Can you explain what you want them to do?

You could do this with text animators to give yourself the flexibility of keyframes, but what you need to do with that expression is change the substr() on the last line.

Substr takes a string (a collection of characters, like a word or a line of text) and chops it up according to its two parameters, which give you the first character (in this…

Read more

Try making a text layer and setting the source text using the expression to test what value landkreis is returning. E.g., put this on the source text property:

markerNr = thisComp.layer(“Werte_Speicher”).effect(“Auswahl-MarkerNr”)(1); 
landkreis = footage(“Landkreisauswahl.csv”).dataValue([1,markerNr]); 
landkreis

That will tell you if the data is…

Read more

If you use CEP panels you can use the setInterval() method to run a loop, but I feel like learning how to use CEP panels may be more overhead than you need.

To access a position keyframe of the camera for example, at the first key:

thisComp.layer("Camera 1").transform.position.valueAtTime(thisComp.markerKey(n).time)

Markers can be accessed by number (the number is the order that they appear, not the number it is assigned to, which is actually its name), or by name, e.g.

thisComp.layer("Camera…

Read more

There are, as always a few ways you can do it. The best, most fun way is with maths.

The default polystar triangle is an equilateral triangle. If we bisect it (cut in half, in this case along the horizontal mid-line) to make two right angle triangles, we have a triangle with a hypotenuse (h) the same length as the sides of the original, i.e. 100px…

Read more

keyframes have a time property so the line would be:

let keyframeTime = position.key(k).time

You can access all the properties of keyframes this way, e.g.

let keyframeValue = position.key(k).value

more info about keyframes in expressions here

The problem is that the sourceRectAtTime ecxpression is just giving you dimensions of the text box, not the positions of the text box in comp co-ordinates. Since the text dimensions don’t change when you move it, the boxes doesn’t follow.

There are a couple of ways to get the comp position of the corners. The simplest, but least robust is to add…

Read more

Math.sin(a) * x

would do the same thing (ish)

Your question is very broad; that would definitely be something that you could script. Either to create the comp from scratch given the CSV, or to trim the ends based on the opacity. https://docs.aenhancers.com is the place to go for extendscript documentation.

You need to store the sourceText in a variable, and apply the style changes to that variable. So:

let st = comp(“CHANGE TEXT”).layer(“1 Line Small Text”).text.sourceText;
if (comp(“CHANGE TEXT”).layer(“Layout_Selector”).effect(“Comedy Central”(“Checkbox”) == 1){
st.style.setFont(“AmericanTypewriter”)
} else {
st.style.setFont(“Helvetica”)
}
st

You could do it with expressions controlling the slide’s opacity, thsi would be less overhead than writing a script. Expressions can work with external data files like csv, you can read about it here: https://helpx.adobe.com/after-effects/using/data-driven-animations.html

You could write an expression that reads the csv, checks to see if the time…

Read more

Simple, use an if() statement

let chkbx = [link to checkbox control, use the pickwhip];
if (chkbx.value){
    [your expression here]
} else {
    value //returns the keyframed value without the expression
}

For the other layer use the boolean not operator: “!“

 if (! chkbx.value){

the distance around a rectangle is the (width + height) * 2. The proportion of the distance to the first vertex is (pseudocode):

(the distance from start to point 1)/total distance

and to the third point

(the distance from start to pt 1 + distance from pt 1 to pt 2)/total distance

if the rectangle goes clockwise from the top left the first distance…

Read more

David, the square brackets turn the number into an array. Why do this? You’re converting to an array and then forcing the expressions engine to convert the array into an integer, which could lead to problems.
The curly brackets form part of the if – else expression:

 if(condition){code block} else if (condition){code block} else {code block}

You use…

Read more

link the stroke width via expressions to the scale of the precomp in the outer comp.

E.g. apply this to the stroke width:

let s = comp(“outer comp name”).layer(thisComp.name).transform.scale;
100/s[0] * value

replace “outer comp name” with the name of the comp that contains the precomp. As the scale increases the stroke width will decrease, for…

Read more

Using an interpolation function like linear() will allow you to transition from one value to another over time. E.G.:

let kf1 = transform.position.key(1);
let kf2 = transform.position.key(2);
linear(kf1.time, kf2.time, kf1.value, [sliderVal, kf2.value[1]])

You could also use ease(), easeIn() or easeOut() in place of linear, for smoothly eased motion.

Maddeningly AE layer indexes start at 1, not zero, so any loops that reference indexes have to start at 1. That could be your problem. Either that or for some reason you’re trying to reference a layer index that doesn’t exist.

Also

parseInt((thisLayer.index)-2  //**Works correctly

How can this work correctly? You’re missing a bracket on the right…

Read more

Those expressions you posted both do what you want, they turn the sound on and off with markers. But I’m guessing when you say on and off, maybe you want the sound to start at one marker and end at the other? If so use the second expression, but invert the logic—it currently turns the audio OFF if the current time is between two markers, so you w…

Read more