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Random Lightining Strikes
Hi
I was hoping to create lightning strikes from one element and wondered if there was a way to write an expression so when that element’s opacity = 0% it would reposition randomly , say 20-30 pixels? (the lightning is flickering using a simple wiggle expression at the moment).
Any suggestions?
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2 Replies
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This should give you a new random position every time the opacity goes below 1%:
p = transform.opacity;
threshold = 1;
trig = false;
for (f = timeToFrames(); f >= timeToFrames(inPoint); f--){
tCur = framesToTime(f);
v = p.valueAtTime(tCur);
if (trig && (v > threshold)) break;
if (v <= threshold) trig = true;
}
seedRandom(f,true);
offset = random([-20,-20],[20,20])
value + offset
Dan
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Thank you! Wish I knew expression coding more thoroughly, it’s such a time saver and my workflow is so much tidier, unlike my desk… 😛
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