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| Perfect. Thanks Dan. James On Apr 12, 2012, at 11:51 AM, Dan Ebberts wrote: > 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> > > +---End of message---+ > To unsubscribe send any message to <ae-list-off@media-motion.tv> > |
