randomly applied opacity with a range

[Kevin Camp]

just a few questions….

first, do you want a given layer’s opacity to animate randomly between those values, or just randomly set the opacity to a value between those values (so it sets it to say 33% and it stays that way though out).

second, do you just want the opacity to be set to one of those 4 values, or can it be set to values between those values (like 40% since that’s between 33-65%). i assume it’s one of those four values, but i wasn’t clear on that…

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW

[Jason Jantzen]

I want the opacity to stay the same throughout the comp, no random animation.

and if it’s possible, make the opacity value one of those 4 values, but of course random from one layer to the next, and no in between values like 40%. This is a request from a Microsoft client if that gives you any idea how weird the request is.

Thanks Kevin!

Jason Jantzen
vimeo.com/jasonj

[Dan Ebberts]

An opacity expression like this should work:

choices = [33,65,75,100];
seedRandom(index,true);
choices[Math.floor(random(choices.length))]

You can apply it to one layer, select the Opacity property then

Edit > Copy Expression Only

select all the other layers

Edit > Paste

Dan

[Kevin Camp]

try this

vals = [33,65,75,100];
seedRandom(index,true);
r = Math.floor(random(0,3.999));
vals[r]

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW

[Jason Jantzen]

thanks guys, both work perfectly. I’m sort of not surprised that nobody’s asked to do something like this. it’s always blinking, flickering, or some other animation.

this saves me a TON of time!

Jason Jantzen
vimeo.com/jasonj