@react-three/fiber

What is @react-three/fiber?

@react-three/fiber is a React renderer for Three.js, enabling the creation of 3D graphics and animations using React components. It simplifies the process of integrating Three.js with React, allowing developers to leverage React's declarative approach to build complex 3D scenes.

What are @react-three/fiber's main functionalities?

Creating a Basic 3D Scene

This code demonstrates how to create a basic 3D scene with two boxes using @react-three/fiber. The `Canvas` component sets up the 3D rendering context, and the `Box` component from `@react-three/drei` is used to add 3D objects to the scene.

```jsx
import React from 'react';
import { Canvas } from '@react-three/fiber';
import { Box } from '@react-three/drei';

function App() {
  return (
    <Canvas>
      <ambientLight />
      <pointLight position={[10, 10, 10]} />
      <Box position={[-1.2, 0, 0]} />
      <Box position={[1.2, 0, 0]} />
    </Canvas>
  );
}

export default App;
```

Animating Objects

This code shows how to animate a 3D object using @react-three/fiber. The `useFrame` hook is used to update the rotation of the box on every frame, creating a continuous animation.

```jsx
import React, { useRef } from 'react';
import { Canvas, useFrame } from '@react-three/fiber';

function RotatingBox() {
  const mesh = useRef();
  useFrame(() => (mesh.current.rotation.x = mesh.current.rotation.y += 0.01));
  return (
    <mesh ref={mesh}>
      <boxGeometry args={[1, 1, 1]} />
      <meshStandardMaterial color={'orange'} />
    </mesh>
  );
}

function App() {
  return (
    <Canvas>
      <ambientLight />
      <pointLight position={[10, 10, 10]} />
      <RotatingBox />
    </Canvas>
  );
}

export default App;
```

Loading 3D Models

This code demonstrates how to load and display a 3D model using @react-three/fiber. The `useGLTF` hook from `@react-three/drei` is used to load a GLTF model, which is then added to the scene using the `primitive` component.

```jsx
import React from 'react';
import { Canvas } from '@react-three/fiber';
import { useGLTF } from '@react-three/drei';

function Model() {
  const { scene } = useGLTF('/path/to/model.glb');
  return <primitive object={scene} />;
}

function App() {
  return (
    <Canvas>
      <ambientLight />
      <pointLight position={[10, 10, 10]} />
      <Model />
    </Canvas>
  );
}

export default App;
```

Other packages similar to @react-three/fiber

three

Three.js is a popular JavaScript library for creating 3D graphics in the browser. Unlike @react-three/fiber, which integrates with React, Three.js is a standalone library that requires imperative programming to create and manage 3D scenes.

react-three-renderer

react-three-renderer is another React renderer for Three.js, similar to @react-three/fiber. However, it is less actively maintained and has fewer features compared to @react-three/fiber, which has a more modern API and better integration with the React ecosystem.

aframe-react

aframe-react is a React binding for A-Frame, a web framework for building virtual reality experiences. While @react-three/fiber focuses on 3D graphics with Three.js, aframe-react is geared towards VR applications and provides a higher-level abstraction for creating immersive experiences.

README

The README file is missing