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| You should be able to make this do what you want: fadeTime = .2; minDur = 1.5; maxDur = 4; seedRandom(index,true); t0 = inPoint - random(maxDur); t1 = t0 + random(minDur,maxDur); while(t1 < time){ t0 = t1; t1 = t0 + random(minDur,maxDur); } t = Math.max(0, time - t0); if (t < fadeTime) ease(t,0,fadeTime,0,100) else ease(t,fadeTime,2*fadeTime,100,0); Dan -----Original Message----- From: James Culbertson Sent: Thursday, April 12, 2012 11:03 AM To: After Effects Mail List Subject: [AE] expression - animating layer opacity on/off I'm doing some traditional 2D animation using layers created by a watercolorist. I need to animate opacity for a mouth open layer on and off within a constrained temporal randomness. Expression variables: Minimum and maximum duration between opacity transitions. Length of transition between 0 and 100% opacity. Thanks much, James +---End of message---+ To unsubscribe send any message to <ae-list-off@media-motion.tv> |
