Turn off sequentially

[Navarro Parker]

Works like a charm! Thank you!!

[John Madison]

Thanks Dan, but I have another question if you dont mind!

I am trying to run a parallel expression to the one you gave me above (turn off sequentially from bottom up and then back down again). I am using the brightness effect to dim the layers that are visible, but I dont want it to affect the top visible layer.

So the idea is the layers turn on from bottom up but they are all dim (for arguments sake this is set to -1) except the top layer which is still unaffected. I tweeked your expression and it works the first time around (i.e when they are turning on from bottom up) but not when they are turning off from top down. Is this making sense?

[Dan Ebberts]

I would think something like this would work:


for (i = 1; i <= thisComp.numLayers; i++)
if (thisComp.layer(i).transform.opacity > 0) break;
if (i == index) 100 else 0


Dan

[Navarro Parker]

How about the opposite of this? So it’s just one layer visible at a time?

[Dan Ebberts]

Something like this maybe:


fOn = 3;
fOff = 1;
f = timeToFrames(time);
idx = Math.floor(f/(fOn + fOff));
if (idx == (index -1))
if (f%(fOn+fOff) >= fOn)
0
else
value
else
0


Dan

[Navarro Parker]

Works great! Thank you.