opacity of a bunch of shape layer groups triggered sequentially by markers

[Dan Ebberts]

Something like this maybe:


n = 0;
if (marker.numKeys > 0){
n = marker.nearestKey(time).index;
if (time < marker.key(n).time) n--;
}
myN = parseInt(thisProperty.propertyGroup(2).name.split(" ")[1],10);
if (n >= myN){
fadeDur = .5;
t = time - marker.key(myN).time;
linear(t,0,fadeDur,0,100);
}else{
0;
}


Dan

[Juanluis Vich]

super awesome! thanks!

I modified the myN a bit to make it work no matter the name of the group but their order, it seems it works, if anyone is interested:

n = 0;
if (marker.numKeys > 0){
n = marker.nearestKey(time).index;
if (time < marker.key(n).time) n--;
}
myN=thisProperty.propertyGroup(2).propertyIndex;

if (n >= myN){
fadeDur = .5;
t = time - marker.key(myN).time;
linear(t,0,fadeDur,0,100);
}else{
0;
}

[Juanluis Vich]

uhm, I’m having a problem I can’t solve, maybe you can help, if possible?

I have another couple shape layers with a lot of groups inside as before, but they are not starting at time=0 (the layers are spread over the timeline)
I changed the marker to read the composition marker instead of the layer’s. But now when they reach a marker, the total marker count is not 0 relative to the layer, it’s being counted since the beginning, so all the shape groups in the order stack less than the marker number jump from 0 opacity to 100 at the inPoint.

I need to make it start with the first marker the layer reaches, being that marker as its 0 marker and then counting from that.
I guess I need to use valueAtTime and inPoint but I cann’t make it work at all….

Any clue would be super welcome

Thanks!

[Dan Ebberts]

Try this:


offset = 0;
if (thisComp.marker.numKeys > 0){
n = thisComp.marker.nearestKey(inPoint).index;
if (thisComp.marker.key(n).time < inPoint) n++
offset = n-1;
}
n = 0;
if (thisComp.marker.numKeys > 0){
n = thisComp.marker.nearestKey(time).index;
if (time < thisComp.marker.key(n).time) n--;
}
myN=thisProperty.propertyGroup(2).propertyIndex;
myN += offset;
if (n >= myN){
fadeDur = .5;
t = time - thisComp.marker.key(myN).time;
linear(t,0,fadeDur,0,100);
}else{
0;
}


Dan

[Juanluis Vich]

Brilliant! Thanks!!!