It's tricky. When your expression detects that the proximity of the other layer is close enough to cause it to flash, it needs to execute a loop that starts at the layer's in point and moves forward in time, frame-by-frame, until it gets to the current time, recreating (using valueAtTime()) everythi...

This should be all you need:

linear(time,inPoint,outPoint,100,0)

After you apply it to one layer, select the Opacity property then Edit > Copy Expression Only, select all other layers, paste.

Dan

Assuming your laser effect is on a 2D layer, it's probably going to be like this:

L = thisComp.layer("Light 1");
fromComp(L.toComp([0,0,0]))


Dan

If you just want the opacity to go to zero when the layer is facing away from the camera, this should work: toCompVec([0, 0, 1])[2] > 0 ? value : 0 If you need to fade from 100 to zero as it points away from the camera, try this: v = toCompVec([0,0,1]); d = length(toWorld(anchorPoint),thisComp.layer...

This should work:

var myPath = "/Applications/Adobe After Effects CS4/Scripts/ScriptUI Panels/myFolder/myfile.txt";
var myFile = File(myPath);
myFile.remove();


Dan

Did you try .removeAll() ?


Dan

Like this:
Dan

Try this:

L1 = comp("the 3d comp").layer("the nested null");
P = L1.toWorld(L1.anchorPoint);
L2 = thisComp.layer("the 3d comp");
L2.toComp(P);



Dan

Is this what you mean?

y = effect("Slider Control")("Slider");
[value[0],y]


Dan

Like this:

if (item instanceof CompItem)


Dan

Like this:
Dan

hype wrote: Unfortunately, the palette grabs the Pete's plugin one, not the AE one. Any ideas on how I can get it to differentiate?

You could use the match name for AE's glow which is "ADBE Glo2".

Dan

I think your footagePath is actually a file object. Try this:

var footagePath=selItems.file.path;


Dan

Expression data does not persist from frame to frame. If you need data from a previous frame, you have to regenerate it. If you can base all your calculations on comp time, then it's pretty easy. Sometimes though, you end up having to recalculate frame-by-frame, starting at time = 0.


Dan

Nan is a JavaScript reserved value that indicates that the result is "Not a Number". There are a number of ways you can get this, including trying to divide by zero. I'm not sure why you would get it for your spatial tangent though.

Dan