layer marker triggers upscale-hold x frames-downscale

[Dan Ebberts]

It’s not clear to me exactly what is supposed to happen at the markers.

Dan

[Peter Zeet]

ah
there is a ball, with a scale of [100,100], and when there is a marker, it goes from [100,100] to [80,80], stays at [80,80] during some frames, and then it goes back to [100,100]
giving a holding time of, per example .5 sec
so it would be:
100% scale ———–*marker* 80%scale —- holding time— 80%scale—-100% scale ————-*marker*etcetc——–

[Dan Ebberts]

I think that would be like this:


holdTime = .5;

n = 0;
if (marker.numKeys > 0){
n = marker.nearestKey(time).index;
if (marker.key(n).time > time) n--;
}
if (n == 0){
s = 100;
}else{
t = time - marker.key(n).time;
s = (t < holdTime) ? 80 : 100;
}
[s,s]


Dan

[Peter Zeet]

fantastic!! I was coming with a super ugly and dirty solution, but this one is neat and simple! thaks!

I have a related question, but don’t know if it can make the previews take much longer as for the precalculations (and speaking about a lot of layers)

so: if I add a checkbox so if it is clicked it gets rid of the markers actions and let me use muy own keyframes and vice-versa? so if its not clicked it would use the code before, but getting totally rid of any manual keyframing?

[Juanluis Vich]

HI!
how it could be modified so we have a linear animation with fade time?
so it is like: once the marker is reached go from 80 to 100 in .2, then hold .5, then go back to 80 in .2

thanks!

[Dan Ebberts]

Something like this probably:


holdTime = .5;
fadeTime = .2;

n = 0;
if (marker.numKeys > 0){
n = marker.nearestKey(time).index;
if (marker.key(n).time > time) n--;
}
if (n == 0){
s = 80;
}else{
t = time - marker.key(n).time;
if (t < fadeTime + holdTime){
s = linear(t,0,fadeTime,80,100);
}else{
s = linear(t,fadeTime+holdTime,fadeTime*2+holdTime,100,80);
}
}
[s,s]


Dan

[Juanluis Vich]

awesome, thank you!