Expression for controlling bullets of text?

[Kevin Camp]

something like this might help you.

it will base the opacity transition timing on the in and out points of the layer, you just need to set the duration of the fade and the minimum and maximum opacity values.

FadeTime = 1; // value in seconds
MinOpacity = 0;
MaxOpacity = 100;

if (time >= inPoint) linear(time, inPoint, inPoint + FadeTime, MinOpacity, MaxOpacity);
if (time > outPoint - FadeTime) linear(time, outPoint - FadeTime, outPoint, MaxOpacity, MinOpacity);

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW

[Dan Ebberts]

There are probably a number of to approach it–it’s hard to know which way will best meet your needs.

One way would be to use a source text expression to select three lines of text depending on elapsed time since the text layer’s in point. That would look like this:


dur = 5;
mySplit = value.split("r");
seg = Math.floor((time-inPoint)/dur);
mySplit = value.split("r");
str = "";
for(i = seg*3; i < seg*3+3; i++){ if (i < mySplit.length){ if (i != seg*3) str += "r"; str += mySplit[i]; } } str

You'd probably also want expressions controlling the range selectors for your animations as well. These would also be driven by the time elapsed since the start of the latest group of lines. Those would have code like this in them:

dur = 5;
t = (time-inPoint)%dur;

and would probably use linear() to drive the animation based on "t". Hard to say exactly.

Dan

[Alex Dejesus]

wow, interesting. I’ll try it. Thanks!

Alex DeJesus