Random Color Change at Layer Marker (with transition)?

[Dan Ebberts]

Try this:


tRamp = 3*thisComp.frameDuration;
markerLayer = thisComp.layer(1);
m = markerLayer.marker;
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key(n).time > time) n--;
}

seedRandom(n,true);
c1 = random([n*81.79],[n*n*7.77]);

if (n > 0){
seedRandom(n-1,true);
c0 = random([(n-1)*81.79],[(n-1)*(n-1)*7.77]);
t = time - m.key(n).time;
linear(t,0,tRamp,c0,c1)
}else{
c1
}


Dan

[Rob Frese]

Dan! Yes! Perfect! Exactly what I needed.

Wow, I didn’t know Dan Ebberts would be answering my question. That’s pretty freaking cool.

[Juanluis Vich]

hi!
do you know if it’s possible to take the color from a selection from a bunch of Color Control effect (maybe stored at the same layer) instead of a total random color? I’ve been trying to, but not lucky at all 🙁

thanks!

[Santi Agustí]

it is not the cleanest, but you can apply this to a fill effect:

markerLayer = thisLayer
m = markerLayer.marker;
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key(n).time > time) n--;
}

seedRandom(n,true);
color1=thisComp.layer("Colors").effect("Color Control")("Color");
color2=thisComp.layer("Colors").effect("Color Control 2")("Color");
color3=thisComp.layer("Colors").effect("Color Control 3")("Color");
color4=thisComp.layer("Colors").effect("Color Control 5")("Color");
//etc

colors = [color1,color2,color3,color4];

idx = Math.floor(random(colors.length));
colors[idx]


[Ido Shor]

Hey Dan, and all the rest… :)))

I encountered an error while trying to use this expression:
“expression result must be of dimension 4, not 1”

any clues?

also… while you are at it, will be nice if you can send a version of the script that doesn’t have a transition within.

thanks!!
Ido.