• Adobe After Effects Expressions

  kinetic type

  Posted by Jack Parks on February 2, 2011 at 2:20 pm

  Hello

  I found these expressions here….

  https://vimeo.com/18960587

  But they create errors on line 6 then 12.
  I tried using the script editor but couldn’t fix the line 12 glitch.

  I’m trying to use it in cs4, any ideas would be appreciated.

  Thanks

  The text from vimeo

  This is code for bouncy position movement.
Just paste it in the position expression field, in this case it will affect x, y and z movements:
// Inertial Easing (elastically reacts to the speed at which it was animated)
n = 0;
if (numKeys > 0){
n = nearestKey(time).index;
if (key(n).time > time){
nâ

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  Jack Parks replied 15 years, 3 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Dan Ebberts

  February 2, 2011 at 4:17 pm

  It looks like the minus signs got messed up. Try this:

  
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){
v = velocityAtTime(key(n).time - thisComp.frameDuration/10);
amp = .02;
freq = 3.0;
decay = 5.0;
value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
}else{
value;
}


  Dan
• 

  Jack Parks

  February 3, 2011 at 8:51 pm

  Thanks, that did the trick.

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