On 3 May 2018, at 11:00 am, Zack Lovatt <AE-List@media-motion.tv> wrote:

Can you post the full script?

Zack Lovatt

424.442.0020

www.zacklovatt.com

On Wed, May 2, 2018 at 5:51 PM, Chris Zwar <AE-List@media-motion.tv> wrote:

I’ll have a look at using a variable but it’s simpler if I don’t have to. 

The thing that stumps me is that the script works if run from the scripts menu, it just doesn’t work when opened from the windows menu.

I had a quick play yesterday and I changed the .value to .valueAtTime(time, false).  The “false” flag is supposed to force the return of the expression and not the underlying pre-expression value.  It still doesn’t work.  The colour control that is applied by the script works as expected after the script has run, so there’s no issue with the script applying the effect and the expression.

I’ll try using a slider instead but I appreciate any other suggestions...

> On 3 May 2018, at 7:09 am, TIM THIESSEN <AE-List@media-motion.tv> wrote:
>
> I'm thinking the problem is you are applying an expression to the controller 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 returns 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 return 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:
>>
>>
>> Hi,
>>
>> Just after some scripting help.  I have a simple script that works fine when run without a GUI, but if I use exactly the same code in a version with a GUI it doesn’t work any more.
>>
>> The aim is to sample the colour of a layer.  The script applies a colour control / expression control effect, with an expression that uses sampleImage to read the RGB values.  The script then reads the value of the colour control to get the RGB values.
>>
>> As I said - works fine if I run the script from the scripts menu.  But the same thing in a GUI and run from the ScriptsUI Panel doesn’t work. The RGB array variable is just 0. So what am I doing wrong?
>>
>> Cheers,
>>
>>
>> -Chris
>>
>> Offending code:
>>
>> myLayer[0].property("ADBE Effect Parade").addProperty("ADBE Color Control”);
>>
>> myLayer[0].property("ADBE Effect Parade").property("ADBE Color Control").property("ADBE Color Control-0001").expression="x=thisLayer.width/2;y=thisLayer.height/2; c=sampleImage([x,y], radius = [2, 2], postEffect = true, t = time);";
>>
>> var RGB=myLayer[0].property("ADBE Effect Parade").property("ADBE Color Control").property("ADBE Color Control-0001").value;
>>
>>
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