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Question: How to call a function on scroll event in React-three-fiber
Time: Asked 47 minute ago
Modified: Asked 83 minute ago
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How to call a function on scroll event in React-three-fiber

In React-three-fiber, you can call a function on scroll event by attaching an event listener to the window object and then calling the function when the scroll event is fired. Here’s an example code snippet that demonstrates this:

jsx
import React, { useRef } from 'react'
import { useFrame } from 'react-three-fiber'

function MyComponent() {
  const myMesh = useRef()

  const handleScroll = () => {
    // Do something when the user scrolls
    console.log('Scroll event detected!')
  }

  // Attach scroll event listener to window object
  window.addEventListener('scroll', handleScroll)

  useFrame(() => {
    // Access and update the position of the mesh in each frame
    myMesh.current.position.x += 0.01
  })

  return (
    <mesh ref={myMesh}>
      <sphereBufferGeometry args={[1, 32, 32]} />
      <meshStandardMaterial color="hotpink" />
    </mesh>
  )
}

export default MyComponent

In this example, we have a component that includes a mesh that moves to the right in each frame using the useFrame hook. We also attach a scroll event listener to the window object and call the handleScroll function when the user scrolls. In this function, you can add any code you want to execute when the user scrolls.

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