💭 What is the best way to set a React state from a Frame processor?

[frodriguez-hu]

Question

Hey! I am wondering what is the best way to do what I am asking on the title. Which is the right worklet function or hook I should use?

What I tried

I am executing this on the frame processor:

Worklets.createRunInJsFn(

And inside that function I am using a sharedValue from the the worklet library.

I mean, I have things like this around all the code:

if (!isInsideLogic.value) {
          eventRegister.value = 0;
          isInsideLogic.value = true;
          setIsInside(true);
        }

A logic value coming from the useSharedValue so I do not use the state value which will have a wrong value cause the frames are executing super fast compared to the React life cycle.
By doing that, it is working but I am not sure if it is the best way.

VisionCamera Version

3

Additional information

• I am using Expo
• I have read the Troubleshooting Guide
• I agree to follow this project's Code of Conduct
• I searched for similar questions in the issues page as well as in the discussions page and found none.

[mrousavy]

React state is much slower than shared values. Only need it if you don't expect it to change often, like hasFacesInView or something like that. That's fine.

For some realtime stuff, use Skia or SharedValues instead.