From: "TIM THIESSEN" <AE-List@media-motion.tv>
Date: Wed, 2 May 2018 14:09:50 -0700 (PDT)
Reply-To: TIM THIESSEN <pixelbot@comcast.net>
To: After Effects Mail List <AE-List@media-motion.tv>
Message-ID: <1486482659.1027842.1525295390370@connect.xfinity.com>
In-Reply-To: <list-6443749@media-motion.tv>
References: <list-6443749@media-motion.tv>
Subject: Re: [AE] scripting help - getting colour value
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I'm thinking the problem is you are applying an expression to the controlle=
r and then asking the value of the controller - the problem is that if you =
apply an expression to say position and then ask the for the value it retur=
ns the default position. rather than add the expression to sample the color=
 just create a variable to sample the point you need and then it will retur=
n the correct color. I don't know your whole application so that may not be=
 possible, and the last time I tried sampleImage() I had some weird colors =
show up.

tt

> On April 30, 2018 at 10:29 PM Chris Zwar <AE-List@media-motion.tv> wrote:
>=20
>=20
> Hi,
>=20
> Just after some scripting help.  I have a simple script that works fine w=
hen run without a GUI, but if I use exactly the same code in a version with=
 a GUI it doesn=E2=80=99t work any more.
>=20
> The aim is to sample the colour of a layer.  The script applies a colour =
control / expression control effect, with an expression that uses sampleIma=
ge to read the RGB values.  The script then reads the value of the colour c=
ontrol to get the RGB values.
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> As I said - works fine if I run the script from the scripts menu.  But th=
e same thing in a GUI and run from the ScriptsUI Panel doesn=E2=80=99t work=
. The RGB array variable is just 0. So what am I doing wrong?
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> Cheers,
>=20
>=20
> -Chris
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> Offending code:
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> myLayer[0].property("ADBE Effect Parade").addProperty("ADBE Color Control=
=E2=80=9D);
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> myLayer[0].property("ADBE Effect Parade").property("ADBE Color Control").=
property("ADBE Color Control-0001").expression=3D"x=3DthisLayer.width/2;y=
=3DthisLayer.height/2; c=3DsampleImage([x,y], radius =3D [2, 2], postEffect=
 =3D true, t =3D time);";
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> var RGB=3DmyLayer[0].property("ADBE Effect Parade").property("ADBE Color =
Control").property("ADBE Color Control-0001").value;
>=20
>=20
> +---End of message---+
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