ADOBE AFTER EFFECTS: Forum Expressions Tutorials Creative Cloud

color array with random hold time

COW Forums : Adobe After Effects Expressions

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
JuanLuis Vich
color array with random hold time
on Jul 19, 2017 at 2:01:22 am

hi!
having this Dan's expression (used here https://forums.creativecow.net/thread/227/3939)

period = 2
holdTime = 0.5;

seed = Math.floor(time/period);
t = time%period
seedRandom(seed,true);
if ( random() > .5 && t < holdTime) 100 else 0;


I'm trying to adapt it so instead of the 100 else 0, it goes thru an array of colors like this, but not sure how to do that
colors = [[255,205,45,255]/255,[220,20,60,255]/255,[30,144,255,255]/255,];

any help will be welcome, thanks!!


Return to posts index

Dan Ebberts
Re: color array with random hold time
on Jul 19, 2017 at 5:35:25 am

I'm having a little trouble picturing exactly how you want this to work. Maybe you could describe it a little more.

Dan



Return to posts index

JuanLuis Vich
Re: color array with random hold time
on Jul 19, 2017 at 11:24:36 am

oh! sorry for the misinfo!
basically I was trying to achieve getting a random color from an array, and make it hold a few seconds, then jump to another color in the array, and so on


Return to posts index


Santi Agustí
Re: color array with random hold time
on Jul 19, 2017 at 11:47:31 am

there are a lot of better ways to do this, but this may work :


colors = [[255,205,45,255]/255,[220,20,60,255]/255,[30,144,255,255]/255,];
period = 2;
holdTime = 0.5;
seed = Math.floor(time/period);
t = time%period

seedRandom(seed,true);

cc =Math.floor(random(colors.length));

if ( random() > .5 && t < holdTime)
id = cc;
else
id = 0;
colors[id];





Return to posts index

Dan Ebberts
Re: color array with random hold time
on Jul 19, 2017 at 1:10:34 pm

Something like this should work:

colors = [[255,205,45,255]/255,[220,20,60,255]/255,[30,144,255,255]/255,];
period = 3;
seed = Math.floor(time/period);
seedRandom(seed,true);
idx = Math.floor(random(colors.length));
colors[idx]


Dan



Return to posts index

JuanLuis Vich
Re: color array with random hold time
on Jul 20, 2017 at 2:37:32 pm

thanks!! it works like a charm!


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]