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Are functions like toComp() and toWorld() available in scripts?

New Here ,
Oct 02, 2017 Oct 02, 2017

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I've stumbled upon these really useful functions, but they only seem to work for me in expressions, and when I try to use them in my script, I get the function undefined message. It would be really weird if they didn't implement this feature for scripts..

Am I missing something?

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correct answers 1 Correct answer

Advocate , Oct 02, 2017 Oct 02, 2017

Unfortunately, you are not missing anything.

The easiest and safest workaround is to add a temporary Point Control (or 3D Point Control for toWorld) somewhere with the appropriate expression, harvest the result, and remove the control.

You can also try to write your own, it's possible but quite some work.

Xavier

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Advocate ,
Oct 02, 2017 Oct 02, 2017

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Unfortunately, you are not missing anything.

The easiest and safest workaround is to add a temporary Point Control (or 3D Point Control for toWorld) somewhere with the appropriate expression, harvest the result, and remove the control.

You can also try to write your own, it's possible but quite some work.

Xavier

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New Here ,
Oct 02, 2017 Oct 02, 2017

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Thanks for confirming that there really is no such function.. it's just really weird and embarrassing, in my opinion, that it doesn't exist.

I've actually come up with a workaround, so for given 3D coordinates (let's say x,y,z = 100,200,300 for simplicity) I do this:

nullLayer.property("Transform").property("Position").expression = "myOtherLayer.toComp([100, 200, 300]);"

which assigns the expression to the null layer's position.

After that I just read that value like this:

pos2D = nullLayer.property("Transform").property("Position").value;

Which looks exactly like what you've described, but without Point Control, so I would like to ask you whether you think Point Control has any benefits over what I'm doing?

Thanks!

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Advocate ,
Oct 02, 2017 Oct 02, 2017

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To set the expression, you need a host property. If you already have a free 2D/3D property to use (like the null position)  then you can it of course, but in some situations you might have to add something (a Point Control, or a Null).

Xavier

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Advocate ,
Jun 20, 2020 Jun 20, 2020

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LATEST

If anyone is still looking for methods to get layers coordinates via ExtendScript, look no further - I've reverse engineered toWorld() and toComp() methods and created a separate class for it https://github.com/rendertom/LST

 

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