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IF expression smooth transition - Random color

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Jason Causse
IF expression smooth transition - Random color
on Jun 10, 2016 at 6:46:08 pm

Hello! This is my first post :) I'm new in After effects (and also in English, so please be comprehensive).
I'm trying to make a shape that will change color randomly at a random time. Between each color, I want a smooth transition.
Where my problem comes, it's when I want to change the colors that can be randomly adopted by the shape in a certain moment of the timeline (for example at the second 17).
What happens now, is that at second 17 the color switches to a new color but without the smooth transition.
Please if anyone knows how to do that, i'll be very grateful.
Thank you!

if (time &lt; 17)
{
colors = [[129,200,213,255]/255,
[222,078,060,255]/255,
[235,205,081,255]/255,
[241,231,209,255]/255, [134,109,206,255]/255, [227,085,098,255]/255, [217,141,153,255]/255, [000,175,101,255]/255];
}
if (time >= 17)
{
colors = [[129,200,213,255]/255,
[241,231,209,255]/255, [227,085,098,255]/255, [217,141,153,255]/255, [000,175,101,255]/255];
}
easeTime = .6;
segMin = .5;
segMax = 2;
seedRandom(index,true);
segDur = random(segMin,segMax);
curSeg = Math.floor(time/segDur);
t = time%segDur;
seedRandom(curSeg,true);
idx1 = Math.floor(random(colors.length));
seedRandom(curSeg-1,true);
idx0 = Math.floor(random(colors.length));
ease(t,0,easeTime,colors[idx0],colors[idx1])


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Dan Ebberts
Re: IF expression smooth transition - Random color
on Jun 10, 2016 at 11:07:31 pm

Like this maybe:


colors1 = [[129,200,213,255]/255,
[222,078,060,255]/255,
[235,205,081,255]/255,
[241,231,209,255]/255, [134,109,206,255]/255, [227,085,098,255]/255, [217,141,153,255]/255, [000,175,101,255]/255];
colors2 = [[129,200,213,255]/255,
[241,231,209,255]/255, [227,085,098,255]/255, [217,141,153,255]/255, [000,175,101,255]/255];
easeTime = .6;
segMin = .5;
segMax = 2;
seedRandom(index,true);
segDur = random(segMin,segMax);
curSeg = Math.floor(time/segDur);
t = time%segDur;
seedRandom(curSeg,true);
if (curSeg*segDur < 17){
idx1 = Math.floor(random(colors1.length));
c1 = colors1[idx1];
}else{
idx1 = Math.floor(random(colors2.length));
c1 = colors2[idx1];
}
seedRandom(curSeg-1,true);
if ((curSeg-1)*segDur < 17){
idx0 = Math.floor(random(colors1.length));
c0 = colors1[idx0];
}else{
idx0 = Math.floor(random(colors2.length));
c0 = colors2[idx0];
}
ease(t,0,easeTime,c0,c1)



Dan



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Jason Causse
Re: IF expression smooth transition - Random color
on Jun 10, 2016 at 11:26:29 pm

It worked perfectly! Thank you very much Dan.


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