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expression for color control – frame hold – slider number?
I’m using a great expression from created by Filip Vandueren
to create a random fill effect via color control expressions.Currently the colors change every frame, what I would like to have a is a slider that determines how many frames the colors hold. 1 would be like it currently is (updating every frame), 2 it would hold for 2 frames, etc…
Not exactly sure how to go about this,
Here is the expression I’m using for the random fill:
l=thisComp.layer(“Colors”);
i=1;
colors=[];
try {
while(l.effect(i)) {
if (l.effect(i)(1).name==”Color”) {
colors.push(l.effect(i)(1).value);
}
i++;
}
} catch (e) {}
if (colors.length) {
r=Math.floor(random(colors.length));
colors[r];
} else {
value;
}Thanks for the help
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4 Replies
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Adding this to the beginning or your expression should work:
s=Math.max(Math.round(effect(“Slider Control”)(“Slider”)),1);
f=timeToFrames(time);
seed = Math.floor(f/s);
seedRandom(seed,true);Dan
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Thanks Dan,
This works great if my slider is on the same layer, but I have my slider on another layer called “Colors”.
I tried modifying your expression, but the language is still off.
Any ideas why it’s not seeing the slider on the master layer?s = thisComp.layer("Colors").effect("Slider Control")("Slider").value;
s=Math.max(Math.round(effect("Slider Control")("Slider")),1);
f=timeToFrames(time);
seed = Math.floor(f/s);
seedRandom(seed,true); -
Try it this way:
slider = thisComp.layer(“Colors”).effect(“Slider Control”)(“Slider”).value;
s=Math.max(Math.round(slider),1);
f=timeToFrames(time);
seed = Math.floor(f/s);
seedRandom(seed,true);Dan
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Great, thanks again Dan
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