Introduction to React-three-fiber Part 2

Introduction to React-three-fiber Part 2

Hello 👋, Welcome to Part 2 of our blog series on react-three-fiber. In this tutorial, we will learn how to render any 3D model in your scene using gltfjsx.

If you followed along with Part 1, you already know how to create a basic 3D scene using react-three-fiber. Now, let's take it to the next level with 3D models!

In case you’re wondering! Check out what we'll be building today at

obytes-3d-orange.vercel.app

3d box GIF

To follow along with this tutorial, you will need a 3D model. We will be using the orange 3D model built by bariacg, which you can download glTF format for free and copy texturesscene.bin  and scene.gltf into your public folder.

Orange 3D model.

Firstly, let's understand what is gltfjsx

gltfjsx is a tool that generates React components from glTF files format for 3D scenes and models using the JSON standard.

Before starting, we need to install react-three/fiber and react-three/dreiusing the following command:

npm i @react-three/fiber

npm install @react-three/drei

Once installed, we can convert our glTF file to a React component using the following command using gltfjsx:

npx gltfjsx scene.gltf

This will generate a React component for our 3D model. We can then import this component and use it in our scene.

import { useGLTF } from "@react-three/drei";
import React from "react";

export function Model(props) {
  const { nodes, materials } = useGLTF("/scene.gltf");
  return (
    <group {...props} dispose={null}>
      <mesh
        geometry={nodes.Orange_Orange_0.geometry}
        material={materials.Orange}
        scale={1.5}
      />
    </group>
  );
}

useGLTF.preload("/scene.gltf");

Now that we have our Model component ready, we can import it within a react-three-fiber canvas to handle the scene creation!

In order to make our 3D model impressive and ready for display on the web, we will add the ambientLight and OrbitControls components. With these additions, our 3D model will be fully interactive and ready to be explored by users.

import { Model } from "./Components/Model";
import { OrbitControls } from "@react-three/drei";
import { Canvas } from "@react-three/fiber";

function App() {
  return (
   <Canvas
        camera={{
          position: [0, 50, 100],
        }}
      >
        <ambientLight intensity={1.2} />
          <Model />
        <OrbitControls />
    </Canvas>
  );
}

export default App;

In conclusion, using gltfjsx to generate React components from glTF files makes it easy to render 3D models. By following the steps outlined in this blog, you can render any 3D model in your react-three-fiber scene. So, if you found this blog helpful and informative, don't hesitate to share it on your social media channels.

Omar Ouhra
Omar Ouhra
2023-04-14 | 3 min read
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