Crossing Keys and changing values…

[Dan Ebberts]

I’m not sure, but it sounds like you’re trying to create a persistent variable (something that survives from one frame to the next), which you can’t do. If what you’re really after is the number of markers that have occurred since the last keyframe, your expression will have to count them. I can help you with that, if that’s indeed what you’re trying to do.

Dan

[Ed Nudnick]

That sounds about right…
Though, I realize I forgot all about the value of poor little “n,” which is really where the magic happens.

I think the logic behind what I’m after (at this point) is to reduce n to 1 (one) in the following manner:

Subtract the value of the marker index from the current value of n each time the index value of the sourceText keyframes increases.

To achieve this, I don’t think I need to embed my original (and most importantly), working expression into another IF… ELSE statement.

But, I just have to parse the logic into another javascript/Adobe-speak hybrid.

[Ed Nudnick]

Ok. I’m getting MUCH closer.

Though, I’m having some difficulty in remembering how to prevent a value from changing until the current time actually crosses the time at the marker.

The function of “Nearest” seems to be giving me a rounding error.

transSOUND = thisComp.layer("transcribedSOUND.wav");
HLword = 0;
n = 0;
nn = 0;
xx = 0;
xxt = 0;

if (text.sourceText.numKeys > 0)
{xx = text.sourceText.nearestKey(time).index;
xxt = text.sourceText.key(xx).time;
if (xxt > time) {xx--;
}}

if (xx > 0)
{if (xx%2)
{x = xx;}
else
{x = xx;}
}
else
{x;}

if (transSOUND.marker.numKeys > 0)
{nn = transSOUND.marker.nearestKey(time).index;
n = (transSOUND.marker.nearestKey(time).index - transSOUND.marker.nearestKey(xxt).index + 1);
if (transSOUND.marker.key(nn).time > time) nn--;
}

if (n > 0)
{if (n%2)
{HLword = n;}
else
{HLword = n;}
}
else
{HLword;}

[Ed Nudnick]

Sorry. Sorry…

The expression below is where I’m currently stuck

transSOUND = thisComp.layer("transcribedSOUND.wav");
HLword = 0;
n = 0;
nn = 0;
xx = 0;
xxt = 0;

if (text.sourceText.numKeys > 0)
{
xx = text.sourceText.nearestKey(time).index;
xxt = text.sourceText.key(xx).time;

if (xxt > time) {xx--;
}}
if (transSOUND.marker.numKeys > 0)
{nn = transSOUND.marker.nearestKey(time).index;
n = ((transSOUND.marker.nearestKey(time).index - transSOUND.marker.nearestKey(xxt).index )+1);
if (transSOUND.marker.key(nn).time > time) nn--;
}
if (n > 0)
{if (n%2)
{HLword = n;}
else
{HLword = n;}
}
else
{HLword;}

[Dan Ebberts]

I think this is closer to what you’re after:


count = 0;
t = 0;
n = 0;
if (text.sourceText.numKeys > 0){
n = text.sourceText.nearestKey(time).index;
if (text.sourceText.key(n).time > time)n--;
}
if (n > 0) t = text.sourceText.key(n).time;
m = thisComp.layer("transcribedSOUND.wav").marker;
k = 0;
if (m.numKeys > 0){
k = m.nearestKey(time).index;
if (m.key(k).time > time)k--;
}
if (k > 0){
while ((k >= 1) && (m.key(k).time >= t)){
k--;
count++;
}
}
count


Dan

[Ed Nudnick]

Perfect!

I keep forgetting about while functions and wind up concocting a bunch of IF’s embedded into IF’s.

Thanks, Dan!