What is the best way to access controls instance in react-three-fiber?

Is there a method to retrieve the controls instance of the scene in react-three-fiber?

I am aware that it can be obtained using a ref, for example:

import { useFrame } from 'react-three-fiber'

const controls = useRef()
useFrame(state => controls.current.update())
return <orbitControls ref={controls} />

However, I am interested in finding a more global approach like:

    const { 
        gl,         // WebGL renderer
        scene,      // Default scene
        camera,     // Default camera
    } = useThree()

Answer №1

It seems like achieving this out of the box may not be possible.

One workaround to accomplish a similar result as the useThree example is by storing the controls ref in a Context. This way, you can access it by consuming that Context in any descendant component within the tree.

Here's an example (please note that this code has not been tested):

const ControlsContext = createContext()

const ControlsContainer = ({ children }) => {
  const controls = useRef()
  return (
    <ControlsContext.Provider value={{ controls: controls.current }}>
      <orbitControls ref={controls} />
      {children}
    </ControlsContext.Provider>
  )
}

const YourComponent = () => {
  const { controls } = useContext(ControlsContext)
  // Perform necessary actions, but ensure to validate if it's defined
}

const App = () => (
  <ControlsContainer>
    <YourComponent />
  </ControlsContainer>
)

However, using this approach may not be considered best practice. It's advisable to keep all control-related code within a single component. If there's a need to share it with another component, you can simply pass it down as a prop.

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