From: "Robert Kjettrup" <AE-List@media-motion.tv>
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Date: Fri, 6 Jul 2018 13:07:24 +0200
Message-ID: <CA+0KRdtd-QBgUH2WMWx=89JwCin88DejYrPcNkRoBvardbsGyg@mail.gmail.com>
Subject: Try Catch expression
To: After Effects Mail List <AE-List@media-motion.tv>
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 Hi

im using .charCodeAt() to get a Unicode value from a textlayer to timeremap
a precomp, this is working great to use custom graphics to type out words.

But im having a small problem with AE giving me an expression error if i
use the charCodeAt() to read from a chararcter there is higher than the
length of the textstrring of the text layer


This error is not really problematic since it renders fine.... but now that
i have set up a larger project i have the expression warning banner tell me
about 55 errors, and that is quite annoying.

Now im trying to use the Try Catch to get AE to ignore this error and not
return a warning for each layer that has this expression reading outside
the length of a textstring... but i cant get it to work.
What am i doing wrong.

the setup is as follows:

a precomp with a bitmat characters setup at framenumbers that match the
Unicode value that .charCodeAt() returns.

This expression on the TimeRemap property of each copy of the character
comp, this is character 3, aka copy 3 of this comp:


txtVal = thisComp.layer("ab").text.sourceText;
fps = 1/thisComp.frameDuration;
Ch = 3;
txtVal.charCodeAt(Ch-1)/fps


And the Try/Catch method i cant get to work

txtVal = thisComp.layer("ab").text.sourceText;
fps = 1/thisComp.frameDuration;
Ch = 3;
try { txtVal.charCodeAt(Ch-1)/fps } catch(err) { 0 }



and a link to a screengrab of a simplified version of my setup:
https://adobe.ly/2NtbdHv

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<div dir=3D"ltr"><div>

<span style=3D"font-size:12.8px;background-color:rgb(255,255,255);text-deco=
ration-style:initial;text-decoration-color:initial;float:none;display:inlin=
e">Hi</span><div style=3D"font-size:12.8px;background-color:rgb(255,255,255=
);text-decoration-style:initial;text-decoration-color:initial"><br></div><d=
iv style=3D"font-size:12.8px;background-color:rgb(255,255,255);text-decorat=
ion-style:initial;text-decoration-color:initial">im using .charCodeAt() to =
get a Unicode value from a textlayer to timeremap a precomp, this is workin=
g great to use custom graphics to type out words.</div><div style=3D"font-s=
ize:12.8px;background-color:rgb(255,255,255);text-decoration-style:initial;=
text-decoration-color:initial"><br></div><div style=3D"font-size:12.8px;bac=
kground-color:rgb(255,255,255);text-decoration-style:initial;text-decoratio=
n-color:initial">But im having a small problem with AE giving me an express=
ion error if i use the charCodeAt() to read from a chararcter there is high=
er than the length of the textstrring of the text layer</div><div style=3D"=
font-size:12.8px;background-color:rgb(255,255,255);text-decoration-style:in=
itial;text-decoration-color:initial"><br></div><div style=3D"font-size:12.8=
px;background-color:rgb(255,255,255);text-decoration-style:initial;text-dec=
oration-color:initial"><br></div><div style=3D"font-size:12.8px;background-=
color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:=
initial"><span style=3D"font-size:small;background-color:rgb(255,255,255);t=
ext-decoration-style:initial;text-decoration-color:initial;float:none;displ=
ay:inline">This error is not really problematic since it renders fine.... b=
ut now that i have set up a larger project i have the expression warning ba=
nner tell me about 55 errors, and that is quite annoying.</span></div><div =
style=3D"font-size:12.8px;background-color:rgb(255,255,255);text-decoration=
-style:initial;text-decoration-color:initial"><span style=3D"font-size:smal=
l;background-color:rgb(255,255,255);text-decoration-style:initial;text-deco=
ration-color:initial;float:none;display:inline"><br></span></div><div style=
=3D"font-size:12.8px;background-color:rgb(255,255,255);text-decoration-styl=
e:initial;text-decoration-color:initial">Now im trying to use the Try Catch=
 to get AE to ignore this error and not return a warning for each layer tha=
t has this expression reading outside the length of a textstring... but i c=
ant get it to work.</div><div style=3D"font-size:12.8px;background-color:rg=
b(255,255,255);text-decoration-style:initial;text-decoration-color:initial"=
>What am i doing wrong.</div><div style=3D"font-size:12.8px;background-colo=
r:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:init=
ial"><br></div><div style=3D"font-size:12.8px;background-color:rgb(255,255,=
255);text-decoration-style:initial;text-decoration-color:initial">the setup=
 is as follows:</div><div style=3D"font-size:12.8px;background-color:rgb(25=
5,255,255);text-decoration-style:initial;text-decoration-color:initial"><br=
></div><div style=3D"font-size:12.8px;background-color:rgb(255,255,255);tex=
t-decoration-style:initial;text-decoration-color:initial">a precomp with a =
bitmat characters setup at framenumbers that match the Unicode value that .=
charCodeAt() returns.</div><div style=3D"font-size:12.8px;background-color:=
rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initia=
l"><br></div><div style=3D"font-size:12.8px;background-color:rgb(255,255,25=
5);text-decoration-style:initial;text-decoration-color:initial">This expres=
sion on the TimeRemap property of each copy of the character comp, this is =
character 3, aka copy 3 of this comp:</div><div style=3D"font-size:12.8px;b=
ackground-color:rgb(255,255,255);text-decoration-style:initial;text-decorat=
ion-color:initial"><br></div><div style=3D"font-size:12.8px;background-colo=
r:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:init=
ial"><br></div><div style=3D"font-size:12.8px;background-color:rgb(255,255,=
255);text-decoration-style:initial;text-decoration-color:initial"><div>txtV=
al =3D thisComp.layer(&quot;ab&quot;).text.<wbr>sourceText;</div><div>fps =
=3D 1/thisComp.frameDuration;</div><div>Ch =3D 3;</div><div>txtVal.charCode=
At(Ch-1)/fps</div></div><div style=3D"font-size:12.8px;background-color:rgb=
(255,255,255);text-decoration-style:initial;text-decoration-color:initial">=
<br></div><div style=3D"font-size:12.8px;background-color:rgb(255,255,255);=
text-decoration-style:initial;text-decoration-color:initial"><br></div><div=
 style=3D"font-size:12.8px;background-color:rgb(255,255,255);text-decoratio=
n-style:initial;text-decoration-color:initial">And the Try/Catch method i c=
ant get to work=C2=A0</div><div style=3D"font-size:12.8px;background-color:=
rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initia=
l"><br></div><div style=3D"font-size:12.8px;background-color:rgb(255,255,25=
5);text-decoration-style:initial;text-decoration-color:initial"><div>txtVal=
 =3D thisComp.layer(&quot;ab&quot;).text.<wbr>sourceText;</div><div>fps =3D=
 1/thisComp.frameDuration;</div><div>Ch =3D 3;</div><div>try { txtVal.charC=
odeAt(Ch-1)/fps } catch(err) { 0 }</div></div><div style=3D"font-size:12.8p=
x;background-color:rgb(255,255,255);text-decoration-style:initial;text-deco=
ration-color:initial"><br></div><div style=3D"font-size:12.8px;background-c=
olor:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:i=
nitial"><br></div><div style=3D"font-size:12.8px;background-color:rgb(255,2=
55,255);text-decoration-style:initial;text-decoration-color:initial"><br></=
div><div style=3D"font-size:12.8px;background-color:rgb(255,255,255);text-d=
ecoration-style:initial;text-decoration-color:initial">and a link to a scre=
engrab of a simplified version of my setup:</div>

</div><a id=3D"gmail-target" target=3D"_blank" rel=3D"noopener noreferrer" =
href=3D"https://adobe.ly/2NtbdHv" style=3D"text-decoration:none;color:rgb(1=
5,102,208);font-family:adobe-clean,Arial,sans-serif;font-size:14px;white-sp=
ace:nowrap">https://adobe.ly/2NtbdHv</a>

<br></div>

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