-
Inertia bounce expression – error: velocityAtTime is not a function
Hi,
I am pretty new to After effects and entirely new to Expressions, I have tried to use this expression on a shape but I get this error message:
After Effects warning: Expression Disabled
Error at line 14 in property ‘Path’ of layer 1 (‘TP button Outlines) in comp ‘Tp button’.
TypeError: velocityAt Time is not a functionCan anybody help?
Thanks!
n = 0;
if (numKeys > 0){
n = nearestKey(time).index;
if (key(n).time > time){
n--;
}
}
if (n == 0){
t = 0;
}else{
t = time - key(n).time;
}if (n > 0 && t < 1){
v = velocityAtTime(key(n).time - thisComp.frameDuration/10);
amp = .05;
freq = 4.0;
decay = 8.0;
value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
}else{
value;
}
-
1 Reply
-
I believe velocityAtTime() is a property to be accessed in this manner:
myLayer.position.velocityAtTime();
i.e. you want to pick whip your layer for the beginning part and add .position (if you want the velocity of the change in position, rather than change in rotation, or scale) and then the rest of the code in that line.
I didn’t investigate the full code, but that should at least address the error message.
Kalleheikki Kannisto
Senior Graphic Designer
Reply to this Discussion! Login or Sign Up