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Date: Wed, 13 Mar 2013 20:55:57 -0400
Message-ID: <CAGCkTeY0C8Zr4R9orTeaT6um6ZhVjjnVzoSbh4bDVj+JndsDdA@mail.gmail.com>
Subject: Divide by Zero Errors...
From: Andrew Embury <aembury@gmail.com>
To: After Effects Mail List <AE-List@media-motion.tv>
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Hey guys/ gals!

Quick question....

Whilst animating in AE tonight I was using the following expression:

amp = .03;
freq = 4.0;
decay = 12.0;
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);
value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
}else{value}


Never ever have I since have encountered so many "Divide by Zero" errors in
my life with AE.

Currently working with CS6 and I am applying this expression to Scale,
Position, and Rotation.

Any help would be greatly appreciated.

Thank you.

- Andrew

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<div dir=3D"ltr">Hey guys/ gals!<div><br></div><div style>Quick question...=
.</div><div style><br></div><div style>Whilst animating in AE tonight I was=
 using the following expression:</div><div style><br></div><div style><div>
amp =3D .03;</div><div>freq =3D 4.0;</div><div>decay =3D 12.0;</div><div>n =
=3D 0;</div><div>if (numKeys &gt; 0){</div><div>n =3D nearestKey(time).inde=
x;</div><div>if (key(n).time &gt; time){</div><div>n--;</div><div>}}</div><=
div>if (n =3D=3D 0){ t =3D 0;</div>
<div>}else{</div><div>t =3D time - key(n).time;</div><div>}</div><div>if (n=
 &gt; 0){</div><div>v =3D velocityAtTime(key(n).time - thisComp.frameDurati=
on/10);</div><div>value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t=
);</div>
<div>}else{value}</div><div><br></div><div><br></div><div style>Never ever =
have I since have encountered so many &quot;Divide by Zero&quot; errors in =
my life with AE.</div><div style><br></div><div style>Currently working wit=
h CS6 and I am applying this expression to Scale, Position, and Rotation.</=
div>
<div style><br></div><div style>Any help would be greatly appreciated.</div=
><div style><br></div><div style>Thank you.</div><div style><br></div><div =
style>- Andrew</div></div></div>

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