create a DNA String/stair out of layers via expression
hi i've got a comp with 2x 25 3d layers.i'd like to create a spiral stair with this layers. let's say i'd like to have a ring of 5 layers and offset all 25 layers in the y axis (layer's height)...
View ArticleExpression needed!! Any help appreciated. Using audio converted keyframes
Hi all, I'm hoping this isn't to much of a complicated issue. I use after effects regularly but the expression stuff does have me baffled. I can convert the audio to keyframes with out an issue. What...
View ArticleStoring a position value from the previous frame
Hey guys, So, I'm trying to assign the X value a null object had at the previous frame so I can continue to subtract a number from it cumulatively. I'm trying to assign it to a variable (prevframe)....
View Articleobject position controlled by time
So, i want to control the position of a white box by using expressions because i can't use keyframes as i want (or i'm just stupid). I already have a = thisComp.layer("White box").effect("Sound...
View ArticleRepeaters: a=1; a++; Only repeat a++; !!
I'm trying to make the repeater's distance increase by 1 each time. Therefore I need my declaration of 'a' to be outside the bit that gets repeated. How do I do this?
View ArticleExpression Issue - Photo Slideshow
Dear forum, I need some advice on expression settings in After Effects. The project I am working on is a slideshow with 300 photographs. They move from left to right (panning horizontal while...
View ArticleThe value of this expression
I was looking through some old tutorial projects and came across this expression [thisLayer.width/2, thisLayer.height/2] which was applied to the Wipe Center property of the Radial Wipe Effect....
View ArticleDetecting keyframes
HelloI want to detect if layer property has keyframe.Two properties: position and opacity.I need something like this: p = transform.position;o = transform.opacity; if(p.hasKeyframe on current time){...
View ArticleDepth of Field expression
Hi i've got a comp with 70 3d layers.They are all arranged in a grid in the x+z axes .Distance between each layer is 3600Px.The camera is parented to a null called"Cam_control".Basically,the camera...
View ArticleHow to create a simple bobbing up and down motion expression?
Hi, I have a 3D object that I want to continuously bob up and down but I'm having trouble finding an expression to do this. I would use wiggle on the Z except wiggle creates random motion and I need...
View ArticleUnpause animation if key value equals X
tldr: I need an expression that plays a sequence of images on a layer (and leave it on the last image) when the value of a key (keyframe?) in another layer of the same comp equals a specific value. I...
View ArticleIs it possible to confine expressions to specific keyframes?
I am definitely a beginner when it comes to expressions. I am currently using a "bounce" expression on the position parameter of some objects as they come on screen. However, the next time they change...
View ArticleHow do I find where a Pick Whip Link goes
I've long ago created a bunch of pick whip relationships in a project, and can no longer find where the links go. If I look at the code it says content("Ellipse 1").transform.scale But I have about...
View ArticleExpression Reset?
While modifying comps (ie: creating , deleting) I’ve managed to break many of my expressions. Usually as a result of a missing comp name, which prompts an error: “Bad Argument… “ etc..After I...
View ArticleExpression error using checkbox control
I'm trying, for the first time, to create an expression that controls a value depending on whether or not a keyed checkbox is on. This is my code. x = comp("overlay...
View Articlescale expression
Hi i've got a 3d comp splitted into pieces with i.e 10 different masks.I then used a script to separate all mask into its own layer.So,i basically have now 10 layers that form this comp now. when i now...
View ArticleLayer1 invisible when Layer2 facing away from the camera in an other comp
Hi I've got a main comp with many Picture comps.A cam is flying from one picture comp to the next and so on.Each picture comp is made out of severalpre-comps.one of this pre-comps contains the frame of...
View ArticleGetting global coordinates from parented local coords.
I have a mocha tracked null. I child another null thats slightly offset in XY. Now the child's coordinates are relative to the parent. But how can I get the child's true position in the comp? This...
View ArticleMultiple Expressions
Is there any way that I can patch the same expression in the same property layer multiple times? What if I would like my camera to execute the same expression at different points in the composition?
View ArticleParenting expression needed
I want to create a handmade anamorphic lens flare and I wanted to have a basic control to animate its position.What Im after is an expression that will allow me to parent the lensflare 'artwork' to a...
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