[Dan Ebberts]

Try changing this:

y = linear(w,-20,20,minY,maxY);

to this:

y = linear(w[1],-20,20,minY,maxY);

[Dan Ebberts]

Probably something like this:

L = thisComp.layer("CONTROL SCRIPT");
dur = L.effect("Slider Control")("Slider");
point = L.effect("Point Control")("Point");
if (numKeys > 1){
  t1 = key(1).time;
  t2 = t1 + dur;
  v1 = key(1).value;
  v2 = L.toComp(point);
  linear(time,t1,t2,v1,v2);
}else
  value

[Dan Ebberts]

Internally, the time remap value is always in seconds, so you just need to do this:

timeToFrames(thisComp.layer("BEAUTY 2").timeRemap)

[Dan Ebberts]

Something like this:

markerNum = 2;
attackTime = .1;
holdTime = .1;
decayTime = .25;
val = 0;
if (marker.numKeys >= markerNum){
  t = time - marker.key(markerNum).time;
  t1 = attackTime;
  t2 = t1 + holdTime;
  t3 = t2 + decayTime
  if (t < t1)
    val = linear(t,0,t1,0,100)
  else if (t < t2)
    val = 100
  else
    val = linear(t,t2,t3,100,0);
}
val

[Dan Ebberts]

Generally, you have to convert the calculation to be time-based. If you can’t come up with a formula based on the current time (or frame number) then you can use the brute-force method, where you start at time = 0 and loop frame-by-frame to calculate the current result. Your example would look something like this:

val = valueAtTime(0);
f = 1;
while (f <= timeToFrames(time)){
  val += val[0]%2 ? [0,1] : [0,-1];
  val += val[1]%3 == 0 ? [1,0] : [-1,0];
  f++;
}
val

[Dan Ebberts]

The way expressions work is that an expression can only access the pre-expression value of the property hosting the expression. That means an expression has no access to results it calculated on other frames, only the keyframed (or static) value.

However, when an expression accesses the value of any other property, it gets the post-expression value of that property.

Depending on what you’re trying to do, there are usually ways to work around these “limitations”. However, if what you’re trying to do involves one or more expressions that affect the results of each other (creating a feedback loop) you may be in for disappointment.

[Dan Ebberts]

Try changing the 2nd line to:

L = thisComp.layer("text");

[Dan Ebberts]

It’s not too complicated if the expression can expect a slider A keyframe with the value of exactly 5 wherever it needs to tally:

SliderA = effect("Slider A")("Slider");
count = 0;
for (i = 1; i <= SliderA.numKeys; i++){
	if (SliderA.key(i).time > time) break;
	if (SliderA.key(i).value == 5) count++;
}
count

Otherwise, it gets more complex.

[Dan Ebberts]

That’s still pretty vague. See what you think of this one:

holdDur = .5;
minDur = 1.0;
maxDur = 1.5;
seedRandom(index,true);
tNext = tPrev = -random(minDur);
while (tNext <= time){
  tPrev = tNext;
  tNext += random(minDur,maxDur);
}
vMin = [0,0];
vMax = [thisComp.width,thisComp.height];
seedRandom(tPrev,true);
vPrev = random(vMin,vMax);
seedRandom(tNext,true);
vNext = random(vMin,vMax);
ease(time,tPrev,tNext-holdDur,vPrev,vNext);

[Dan Ebberts]

I don’t see any jumping. What behavior are you looking for exactly?