Global Attributes/Variables/Parameters?

Hello friends,

I'm just getting started with Fusion expressions and was wondering if there are Global Variables/Values available in DaVinci/Fusion for use in expressions, without for example, having to publish a value from some other parameter in the Inspector panel.

For example, if I want to size my text to be consistent size (relative to the video format) throughout a project, but be able to save the expression as a setting to reuse across projects so that the text will vary in proportion to the size of the video for readability and stylistic reasons.

I imagine there are more than one way to skin this cat, but generally speaking, what I am asking is if there is such a thing as global variables, like I know there to be for "time," and in this case, I am asking if there is something that will allow me to call for the dimensions of the video.

Here you go. It should get you up to speed with the scripting language.
https://documents.blackmagicdesign.com/UserManuals/Fusion8_Scripting_Guide.pdf

Cross reference that with the Lua docs and maybe an AI assistant to make some code and you should be able to do what you're looking for.

Also go to http://www.steakunderwater.com and check out some of the documentation on scripting there.

There's nothing helpful like the scripting assist in After Effects but you should be able to figure things out with the scripting guide.

GetData and SetData functions may be of use to you. These variables can be set at the Fusion (Global) or Compostion (Local) level. So for example you can run a script on creating or on opening a comp to read these values and populate certain node fields.

Ben, Kel,

I am sure the information you've provided will prove to be useful. Thanks so much.

-Sal

So I checked out some of the official scripting documentation and it turned out to be a little more than I was looking for. Then I happened to stumble upon a really handy cheat sheet on billjustice,com that, for now, gives me exactly what I was looking for. I thought I'd throw it in here for future reference and in case someone else might benefit from it.

Here's the link:
https://billjustice.com/fusion_expressions_cheat_sheet

Here's another site that is invaluable for understanding expressions in Fusion.

https://noahhaehnel.com/blog/fusion-sim ... -cookbook/