React Three Fiber vs Three.js: Which Should You Learn First?

Source: Dev.to

Three.js vs React Three Fiber

Three.js is the foundation—a JavaScript library that sits on top of WebGL and lets you build 3D scenes without writing raw GPU code. It’s framework‑agnostic and works with vanilla JS, Vue, Svelte, etc.

React Three Fiber (R3F) is a React renderer for Three.js. It doesn’t replace Three.js; it wraps it. Under the hood, R3F is still Three.js—the difference is how you write it.

Code example: Three.js (imperative)

// Three.js
const geometry = new THREE.BoxGeometry();
const material = new THREE.MeshStandardMaterial({ color: '#c8ff00' });
const cube = new THREE.Mesh(geometry, material);
scene.add(cube);

function animate() {
  requestAnimationFrame(animate);
  cube.rotation.x += 0.01;
  renderer.render(scene, camera);
}
animate();

Code example: React Three Fiber (declarative)

// React Three Fiber
import { useFrame } from '@react-three/fiber';
import { useRef } from 'react';

function Cube() {
  const ref = useRef(null!);
  useFrame(() => {
    ref.current.rotation.x += 0.01;
  });

  return (
    
      
      
    
  );
}

Both snippets produce the same rotating cube, but the mental models differ: imperative vs. declarative (JSX).

How to decide

• You’re new to 3D entirely. Start with raw Three.js to understand scenes, cameras, and renderers.
• You’re not using React. Three.js is the natural choice.
• You want maximum control. Three.js gives you direct access to the WebGL pipeline.
• You already know React. R3F lets you stay in the React ecosystem.
• You’re building a React app and want to move fast. R3F (especially with @react-three/drei) provides ready‑made components for cameras, controls, environments, and effects—what takes dozens of lines in vanilla Three.js can be a couple of lines in R3F.

Most developers who use R3F learned at least a bit of Three.js first; understanding the core concepts makes R3F far less “magical” and more controllable.

Comparison

Recommended learning path

1. Spend a weekend with raw Three.js – build a simple scene, add lights, move a camera.
2. Switch to R3F for everything after that, leveraging React’s component model and the @react-three/drei helpers.

Resources

• R3F Cheat Sheet – a collection of common patterns (hooks, camera setup, lighting, performance tips, and popular drei components).
  👉 R3F Cheat Sheet on Gumroad — $7

Discussion

Which did you start with—Three.js or R3F? Share your experience in the comments.

Tags: #threejs #react #javascript #webdev