How to render 3d obj file with threejs and svelte?
Tags: threejs, 3d, svelte
Published: 2023-08-21 14:06:11

Are you ready to dive into the exciting world of 3D rendering? Look no further! In this article, we will explore how to render a 3D obj file using the powerful combination of Three.js and Svelte. So grab your coding hats and let's get started!

First things first, let's talk about what Three.js and Svelte are. Three.js is a popular JavaScript library that makes it easy to create and display 3D graphics in a web browser. It provides a wide range of features and tools for working with 3D objects, materials, lighting, and more. On the other hand, Svelte is a reactive JavaScript framework that simplifies building user interfaces.

Now that we have a basic understanding of our tools, let's jump in and see how we can render a 3D obj file using Three.js and Svelte. Here are the steps:

1.  First, we need to set up our development environment. Make sure you have Node.js and npm installed on your machine.
2.  Create a new Svelte project by running the following command in your terminal:  
    `npx degit sveltejs/template svelte-3d-rendering`
3.  Navigate to the project directory:  
    `cd svelte-3d-rendering`
4.  Install the required dependencies:  
    `npm install three svelte`
5.  Now, let's create a new Svelte component for our 3D rendering. Open the `App.svelte` file in your favorite code editor and replace its contents with the following code:

    <script>
      import { onMount } from 'svelte';
      import * as THREE from 'three';
    
      onMount(() => {
        // Create a scene
        const scene = new THREE.Scene();
    
        // Create a camera
        const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
        camera.position.z = 5;
    
        // Create a renderer
        const renderer = new THREE.WebGLRenderer();
        renderer.setSize(window.innerWidth, window.innerHeight);
        document.body.appendChild(renderer.domElement);
    
        // Load the obj file
        const loader = new THREE.OBJLoader();
        loader.load('path/to/your/obj/file.obj', (object) => {
          scene.add(object);
        });
    
        // Render the scene
        function animate() {
          requestAnimationFrame(animate);
          renderer.render(scene, camera);
        }
        animate();
      });
    </script>
    
    <style>
      canvas {
        display: block;
      }
    </style>

And that's it! You now have a basic setup for rendering a 3D obj file using Three.js and Svelte. Feel free to customize the code to suit your needs and add some funny phrases to make your project more enjoyable!

Now, go ahead and run the following command in your terminal to start the development server:

    npm run dev

Open your favorite web browser and navigate to `http://localhost:5000`. You should see your 3D obj file rendered on the screen. How cool is that?

Now you have the power to create stunning 3D visualizations using Three.js and Svelte. So go forth and let your imagination run wild!

References:

*   [Three.js](https://threejs.org/)
*   [Svelte](https://svelte.dev/)

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