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proximity detection expression with hold
Hi, I’m having a small problem here I haven’t found a way to solve yet.
I’m having a screen full of characters that are vectorial layers each of them,
I want them to fly away in all directions when a (invisible) layer (solid) is passing by.
I came up with a “particular” that generates the same letters flying away
and I got sofar that the original letter swiches off when the solid that drives “particular’s generator” passes by, in this way:out = [100]
delta = (width + thisComp.layer(“White Solid 2”).width)/2;
if (length(position, thisComp.layer(“White Solid 2”).position) <= delta)
{out = [0]}Now what is missing is that the layer stays off after the solid has passed, like freezing or loop out
or something like that. I’m not expressionist enough to figure it out on my own…out = [100]
delta = (width + thisComp.layer("White Solid 2").width)/2;
if (length(position, thisComp.layer("White Solid 2").position) <= delta)
{out = [0]} -
5 Replies
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This should work:
f = timeToFrames();
gotIt = false;
while (f >= timeToFrames(inPoint)){
t = framesToTime(f);
delta = (width + thisComp.layer("White Solid 2").width)/2;
p1 = position.valueAtTime(t);
p2 = thisComp.layer("White Solid 2").position.valueAtTime(t);
if (length(p1,p2) <= delta){
gotIt = true;
break;
}
f--;
}
gotIt ? 0 : 100
Dan
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Yeah, it does!
Now only got to get my head around it, I like to understand why/how it works
but I got some intuition about it. Nice!
Thank you very much Dan (you sure are a walking expressions diccionary!) -
Great, gotIt!
One more (stupid) question,
Is there a way to copy an expression to lots of layers at the time?
(in this particular project, I’m looking at more then 1000 layers and copy the expression one by one is a bit time-consuming…Thanks again, Peter
Forget I said that, it’s as simple as copying the opacity to all the layers instead of trying to copy the expression… errr
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Or,
Select the property with the expression, Edit>Copy Expression Only, select all the other layers, Edit>Paste
Dan
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Uncountable years on AE and still learning new things on almost every project,
Thanks to people like you.
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