I have t

Question

I have to update a project made by another workmate, he is not available, he have this character hair bouncing a bit when it moves the head and the hair have this expression and show me this error

and this is the expression

freq = 3;
decay = 5;
n = 0;
if (numKeys > 0){
n = nearestKey(time).index;
if (key(n).time > time) n--;
}
if (n > 0){
t = time - key(n).time;
amp = velocityAtTime(key(n).time - .001);
w = freq*Math.PI*2;
value + amp*(Math.sin(t*w)/Math.exp(decay*t)/w);
}else
value
freq = 0.2;
amp = 80;
s= amp*Math.sin(freq*time*2*Math.PI);
[s,s];

Dan Ebberts · Accepted Answer

Depending on how you have your keyframes set up, this might be more what you're looking for:freq = 3;decay = 5;n = 0;if (numKeys > 0){ n = nearestKey(time).index; if (key(n).time > time) n--;}if (n > 0){  t = time - key(n).time;  amp = speedAtTime(key(n).time - .001);  w = freq*Math.PI*2;  value + amp*(Math.sin(t*w)/Math.exp(decay*t)/w);}else  value

Tolomuco-Daniel · Answer

@Mylenium and @Dan Ebberts Thanks both of you. I'm still struggling learning expressions. both solutions work to eliminate the error, but both solutions set and awkard angle in the layer I can't change, the hair ends almos vertical hidden behind the character head.

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