Dan Ebberts: Activity About Popular Images
Dan Ebberts

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May 22nd 2001
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thisComp is undefined.
by Alexander Vinogradov 1 day ago
I'm trying to add an expression for Opacity but AE tells me that thisComp is undefined as well as thisComp.layer... How can it be thisComp.layer("Capsule").transform.opacity
Re: thisComp is undefined.
by Dan Ebberts 1 day ago
There's nothing wrong with the expression. Is there more to the story Dan
Random jump cuts with fade/dissolve~ time remapping
by Anna Hahn 2 days ago
Hello I am currently using the expression below with time remapping to jump cut to a new position within a clip every .44 seconds How can I alter this expression code such that rather than making jump
Re: Random jump cuts with fade/dissolve~ time remapping
by Dan Ebberts 1 day ago
You might want to add a little time to segment duration in the original expression to account for the fade: segDur = .69; duration of each "segment" of random time minVal = inPoint; maxVal = outPoint
Linking Z scale to X or Y scale
by Nikolas Kazoura 4 days ago
Hi there - I have a motion tracked NULL with keyframed X and Y values. I then set the NULL to be a 3D layer and I'd like to know if there's an expression to match the Z scale (depth) to the Height or
Re: Linking Z scale to X or Y scale
by Dan Ebberts 4 days ago
Like this maybe: value 0 ,value 1 ,value 0 Dan
Issue retrieving frame value (for loop involved)
by Eddy van der Leer 5 days ago
Hi, I have an expression that sets the angle of a rotation, based on the value of a checkbox. If the checkbox value is 0, the angle is calculated one way, and if the checkbox is set to 1, the value is
Re: Issue retrieving frame value (for loop involved)
by Dan Ebberts 5 days ago
Did you try my suggestion Dan
Reference a variable comp name
by Marko Suto 5 days ago
Hello AE community! I'm trying to reference to a composition which is duplicated many times. Let me give you an example: I have a text layer named "Index" which changes value each time the comp is dup
Re: Reference a variable comp name
by Dan Ebberts 5 days ago
Try it this way: a = thisComp.layer("Index").text.sourceText; x = comp("name 1 " + a ).layer("^TV1").sourceRectAtTime(time).height; Dan
Path point expression not working on 3D layer
by Tom Metzler 6 days ago
Hello, I am trying to make a null object follow a mask path I have drawn on a layer. The following is an expression that I found online in order to make the null position follow the mask path: tPath=t
Re: Path point expression not working on 3D layer
by Dan Ebberts 6 days ago
Try toWorld() instead of toComp(). Dan
Expressions and JavaScript
by Ahmed Mabrouk 6 days ago
Hi everyone I hope you are all doing well, I was wondering, to what limit can i use JavaScript in the Expressions
Re: Expressions and JavaScript
by Dan Ebberts 6 days ago
The new JavaScript engine in the latest release of AE uses the V8 open-source JavaScript engine. The legacy engine used in previous versions supports the 3rd Edition of the ECMA-262 Standard (1999ish,
Internal JSON
by Jakob Wagner 6 days ago
Hi I want to have a JSON object, but not in a seperate file. Instead I want to put the JSON object on a text layers sourcedata. And then have other layers get the values from that layer. I can't seem
Re: Internal JSON
by Dan Ebberts 6 days ago
Try it this way: var data = eval( "(" + thisComp.layer("data").text.sourceText + ")"); data.blur.bluriness; Dan
Layers skew when rotating
by Ryan Stone 10 years ago
Hey everyone, This is one of those stupid simple questions. I must have pressed a wrong key somewhere and it's activated 'something'. When I rotate a layer it skews and extends horribley, until it rea
Re: Layers skew when rotating
by Dan Ebberts 2 years ago
I'm not aware of a workaround, but would love to hear about it if someone else knows of one. Dan
test
by Dan Ebberts 2 years ago
<
ido shor 2 years ago
Hey dan, I posted a Q on the expression forum, will be great if you'll find the time to answer.

tnxx
Ismael Millán 3 years ago
Circular motion y axis

When i put the rate to 0, the motion is backward, any help? (sorri my english)
The position expression:
radius=effect("Radio")("Slider");
rate=effect("Frecuencia")("Slider");
offset=effect("Offset")("Slider");
angle=time*rate+offset;
x=radius*Math.cos(degreesToRadians(angle));
y=transform.position[1];
z=radius*Math.sin(degreesToRadians(angle));
centre=thisComp.layer("Null 1").transform.position;
add(centre,[x,y,z])
Dan Ebberts 3 years ago
Controlling speed is tricky business. This might help: http: www.motionscript.com articles speed-control.html Dan
Fabio Apelbaum 4 years ago
Hi Dan! hope your day is going well!

Let me ask you a question.. I saw a UI script someone created that when the mouse is over a button, a small description comes at the bottom of the script that looks like statictext but changes when the mouse goes over other buttons.

because the file is encrypted I was not able to open and learn how its done, would you happen to know?

I been playing all morning trying using the event listener and handler, but not sure if thats how its done. and how can you tell the handler to change whichever info in the statictext.

Thank you for your time!!

Take care,

Fabio
Fabio Apelbaum 4 years ago
Hi Dan, could you plese lend me a hand? I was able to write this script and works perfect as long as a project was open in after effects before running the script. But I noticed that if I just opened AE and run the script, it gives me an error at: line3: var projName = proj.file.name.replace(/%20/g, " ");

I understand that the error is happening because it can not find an open file name when AE just opened... but how can I avoid this error?

var my_file = new File("/Volumes/XSANESN/CreativeServices/Projects/ON_AIR_PROMOS/RED_SOX/15_RED_SOX/15_RED\ SOX\ TUNE\ INS/Graphics/RS_Tune_In_Toolkit/RS_Tune_In_Toolkit.aep");
var proj=app.project;
var projName = proj.file.name.replace(/%20/g, " ");



if (projName == null){
new_project = app.open(my_file);
}
else {

if (projName == my_file.name){
alert(projName + " IS ALREADY OPEN");
}
else{
if (my_file.exists){
new_project = app.open(my_file);
}
else {
new_project2 = app.open();
}
}
}
if (new_project){
alert(projName + " IS NOW OPEN, ENJOY");
}


Application




Thanks a lot!
Fabio Apelbaum 4 years ago
Sorry, sent you the wrong version... this is it: var my_file = new File(" Volumes XSANESN CreativeServices Projects ON_AIR_PROMOS RED_SOX 15_RED_SOX 15_RED\ SOX\ TUNE\ INS Graphics RS_T [more]
Dan Ebberts 4 years ago
Before doing anything with the project file, you can test if it exists: if (app.project.file == null){ Does that help Dan
Fabio Apelbaum 4 years ago
Thanks Dan! That worked! to much to learn but I am doing better!. Now, let me ask you.... I do have a collection of items required to run the script I am working on, so far with your help I am now abl [more]
Dan Ebberts 4 years ago
I would guess it would be like this: var myItem = null; for (var i = 1; i <= app.project.numItems; i++){ if ((app.project.item(i) instanceof FolderItem) && (app.project.item(i).name == "x"){ myItem [more]
Fabio Apelbaum 4 years ago
Thanks Dan!!! last question! Just noticed that each computer is trying to connect to the file through different paths, call it an ingeniering problem in our workplace... never the less some computers [more]
Dan Ebberts 4 years ago
I guess you try each path (maybe inside a try catch to trap any errors) and then use .exists to see if the file is there. Something like that. Dan
Fabio Apelbaum 4 years ago
Hi Dan, hope this message finds you well!! As always! thank you for all your help. I run into an new issue, I tried my best to make it easy to understand, could you please take a look?

https://forums.creativecow.net/thread/227/29570

Thanks a lot!

Fabio
Fabio Apelbaum 4 years ago
Hi Dan! First of all Im so please to meet you. You are an inspiration to everyone, certainly to me. I been following your responses to everyone and trying to learn as much as I can about scripting. I have to say I truly fall in love with it. Still a newbie with so much to learn.

In the meantime, if its not to much to ask, I would love if you can take a look to my latest question... I havent been able to find an answer on my own.

this is the post: https://forums.creativecow.net/thread/227/29492

Thank you in advance!

Fabio
Logan King 4 years ago
Hi Dan,
Wanted to message you here instead of creating a separate forum post.

I am creating a 2.5 D parallax scene controlled through a null object. Thanks to you now I am able to use that expression code you helped me understand for this project.
I would like to ask a separate question, its again pretty simple and could be very noobish.

Problem :
When I space out 3 or more layers in the Z axis (depth) the layer that is farthest from the camera appears to be slightly faded than the ones close to the camera.
I m sure this is a simple FOV / Depth issue which can be corrected, can you advice me what to do here ?
Alex Sparrow 4 years ago
Hello! A week ago, I created a theme which has placed a piece of me translated site. http://www.motionscript.com - your website. May I ask your opinion on account of publication?
Alex Sparrow 4 years ago
theme - http: forums.creativecow.net readpost 227 27572
Dan Ebberts 4 years ago
Hi Alex, That's nice work. However I'd really rather not have my content showing up on other web sites. Thanks. Dan
Alex Sparrow 4 years ago
Ok. Thank you. But I can give you translated materials
Dan Ebberts 4 years ago
That's a generous offer, but I don't know what I would do with it. I would have no way to maintain it and it would be strange to have only one translated version on my site.
Alex Sparrow 4 years ago
Thanks again. I just save this material.
Position Expressions
by Alan Young 4 years ago
I've been doing successfully with increasing the y position of my comps with position+ 0,(index-1)*1000 and got to the position from 0 to 49000... however now I want it to go backwards towards 0. Can'
Re: Position Expressions
by Dan Ebberts 4 years ago
I haven't tested this, but it should be close: if (index <= 50) position+ 0,(index-1)*1000 else position+ 0,49000 - (index-50)*1000 Dan
Expression. Random start-position to final-position
by Kasper Nyman 5 years ago
Hi, I'm having this issue with expression in After Effects, and hope someone can help me. I have 40-50 circle set up so they make a certain shape. I would like to add an expression that tells each cir
Re: Expression. Random start-position to final-position
by Dan Ebberts 5 years ago
Actually, there are also easeIn() and easeOut(). Dan
+1
Expression to dynamically adjust values based on proximity to camera
by Alex Christenson 5 years ago
Hey yall! Let me preface this by saying this is my first deep foray into expressions. I've gotten thus far based on my spotty PHP Actionscript knowledge but have hit some walls. I'm designing a halluc
Re: Expression to dynamically adjust values based on proximity to camera
by Dan Ebberts 5 years ago
That piece of the expression is calculating the z distance from the focal plane (the comp view) to the fake 50mm camera that simulates how 3D in AE works when there is no camera. To do that, it uses h
Looping a Video Clip (Ping Pong Style)
by Marius Crowne 6 years ago
Hey there, all. I know how to use expressions to make effects and animations loop, but what if I just want a video clip to do it And when I say "loop," I'm specifically talking about the "ping pong" s
Re: Looping a Video Clip (Ping Pong Style)
by Dan Ebberts 6 years ago
This should work-- Turn on time remapping, add a new keyframe one frame before the last keyframe that AE creates, delete the last keyframe, and add this expression: loopOut("pingpong") Dan
+3
Parenting Single Layer to different nulls at layer markers
by Augusto Sotomayor Jaramillo 6 years ago
Hello Ae folks! I am trying to have 1 comp follow different nulls (each containing diff. animated properties) at comp markers. Is that possible thanks!
Re: Parenting Single Layer to different nulls at layer markers
by Dan Ebberts 6 years ago
I think the closet you can come is to split the layer at the time where you want to switch parents, and select the other parent for the new layer. Dan
Expressions: Leading zeros and decimal places.
by Jakub Michalski 13 years ago
For some time now I have been cracking my head tryign to figure out if there is a way to develop an expression for Text Source that would allow the number (say, driven by a calculation, or a link to s
Re: Expressions: Leading zeros and decimal places.
by Dan Ebberts 6 years ago
Try it this way: num = thisComp.layer("Deep Lime Green Solid 1").effect("Slider Control")("Slider").value; neg = num < 0; num = Math.abs(num); numDigits = 5; numDec = 2; s = "" + Math.floor(num); w
+1
Need assistance: trying to use external text file to update sports score at certain times
by Tony Janks 6 years ago
Hi all, I have been teaching myself After Effects (specifically around using expressions). Anyway, I record my daughter's volleyball games, render the MTS' as MP4, then share with the other parents. N
Re: Need assistance: trying to use external text file to update sports score at certain times
by Dan Ebberts 6 years ago
That's one big advantage of doing it with a script vs. an expression. Dan
have I been a bad boy ?
by Bob Zelin 6 years ago
My last two posts (without hysteria) are being "moderated". Did I do something wrong Bob Zelin
Re: have I been a bad boy ?
by Dan Ebberts 6 years ago
Well that probably explains why I'm also not getting notification of new threads any more. So the comcast server must think you guys are spammers. I don't know what to do about that. Dan
test
by Dan Ebberts 11 years ago

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