text animator triggered by comp marker

[Dan Ebberts]

I’m not sure if this is what you’re after, but it might get you headed in the right direction. Set your Scale Animator amount to 0% and apply this expression:


m = thisComp.marker;
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key(n).time > time) n--;
}
if (n > 0){
t = time - m.key(n).time;
startVal = 0;
endVal = 100;
dur = 0.1;
if (t < dur){
s = linear(t,0,dur,startVal,endVal)
}else{
amp = (endVal - startVal)/dur;
freq = 3;
decay = 5;
w = freq*Math.PI*2;
s = endVal + amp*Math.sin((t-dur)*w)/Math.exp(decay*(t-dur))/w
}
[s,s]
}else
value


Dan

[Peter Zeet]

yes! it`s really close! Is there a way to make the chars appear not as a whole word, but in order? (or random, but not as a whole word)
(as if you animated the in and out in a range selector)

[Dan Ebberts]

Try adding an expression selector, deleting the range selector, and adding this expression to the expression selector amount:


maxDelay = .5;
seedRandom(textIndex,true);
myDelay = random(maxDelay);

m = thisComp.marker;
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key(n).time > time) n--;
}
if (n > 0){
t = time - (m.key(n).time + myDelay);
startVal = 100;
endVal = 0;
dur = 0.1;
if (t < dur){
s = linear(t,0,dur,startVal,endVal)
}else{
amp = (endVal - startVal)/dur;
freq = 3;
decay = 5;
w = freq*Math.PI*2;
s = endVal + amp*Math.sin((t-dur)*w)/Math.exp(decay*(t-dur))/w;
}
[s,s]
}else
value


maxDelay determines how long it takes for all the characters to appear.

Dan

[Peter Zeet]

woooo, thank you veeery much!!!!

[Josh Good]

I have a text layer, and the source text has an expression so it reads the comments inside the markers on the text layer.

I’m wondering if there was a way to modify the expression so you can have the text from the previous marker still display after the play head hits the next marker. Just like you were animating a sentence with the text animator.

The text marker expression is applied to the source text.
The range selector is still on the text layer but the expression is added to the expression selector.

Thanks in advance!

/* This is applied to source text*/
txt = value;
n = 0;
if (marker.numKeys > 0){
n = marker.nearestKey(time).index;
if (marker.key(n).time > time) n--;
if (n > 0) txt = marker.key(n).comment;
}
txt

/* This is applied to the scale expression selector*/
m = marker;
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key(n).time > time) n--;
}
if (n > 0){
t = time - m.key(n).time;
startVal = 100;
endVal = 0;
dur =.3;
if (t < dur){
s = linear(t,0,dur,startVal,endVal)
}else{
amp = (endVal - startVal)/dur;
freq = 3;
decay = 5;
w = freq*Math.PI*2;
s = endVal + amp*Math.sin((t-dur)*w)/Math.exp(decay*(t-dur))/w
}
[s,s]
}else
value

[Dan Ebberts]

I’m not sure this is exactly what you’re after, but try it on source text and see if it helps you get there:


if (marker.numKeys > 0){
txt = "";
n = marker.nearestKey(time).index;
if (marker.key(n).time > time) n--;
for (i = 1; i <= n; i++){
txt += (i > 1 ? " " : "") + marker.key(i).comment;
}
txt
}else{
value
}


Dan

[Josh Good]

Thanks for the quick reply!

That worked great. But the text started in the center then changed positions when the rest of the text was added by the other markers.

What I’m trying to do is have it animate on as a whole line of text like you can do by key framing the index property with the range selector in the text animator. I want the range index to be controlled by the layer markers. Do you know of anyway to do that?

Thanks a bunch!

[Dan Ebberts]

Do you maybe have your text layer center-justified? When I tested it (with a left-justified text layer), the text didn’t move once it came on screen–the new text just popped up on the right.

Dan

[Josh Good]

Yeah you were right it was center-justified. It works perfect now!

Thanks so much for your help!

You the man Dan!

[Josh Good]

Ok last question.

I have the below expression applied to to amount property on the expression selector with the scale set at 0%.

The scaling effect happens on every word each time the playhead hits a marker and I only need the effect to happen once per word. Is there a way to do that?

-Thanks

m = marker;
n = 0;
if (m.numKeys > 0){
n = m.nearestKey(time).index;
if (m.key(n).time > time) n--;
}
if (n > 0){
t = time - m.key(n).time;
startVal = 100;
endVal = 0;
dur =.2;
if (t < dur){
s = ease(t,0,dur,startVal,endVal)
}else{
amp = (endVal - startVal)/dur;
freq = 3;
decay = 10;
w = freq*Math.PI*2;
s = endVal + amp*Math.sin((t-dur)*w)/Math.exp(decay*(t-dur))/w
}
[s,s]
}else
value