- Three.js Tutorial
- Three.js - Home
- Three.js - Introduction
- Three.js - Installation
- Three.js - Hello Cube App
- Three.js - Renderer and Responsiveness
- Three.js - Responsive Design
- Three.js - Debug and Stats
- Three.js - Cameras
- Three.js - Controls
- Three.js - Lights & Shadows
- Three.js - Geometries
- Three.js - Materials
- Three.js - Textures
- Three.js - Drawing Lines
- Three.js - Animations
- Three.js - Creating Text
- Three.js - Loading 3D Models
- Three.js - Libraries and Plugins
- Three.js Useful Resources
- Three.js - Quick Guide
- Three.js - Useful Resources
- Three.js - Discussion
Three.js - Torus Geometries
Torus is a tube-like shape that looks like a donut. You can use THREE.TorusGeometry to create a torus in Three.js. The arguments, radialSegments, and tubularSegments are the number of segments along the radius and tube. With arc property, you can control whether the torus has drawn a full circle.
const torus = new THREE.TorusGeometry( radius, tubeRadius, radialSegments, tubularSegments, arc )
Example
Check out the following example.
torus.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Three.js - Torus</title> <style> * { margin: 0; padding: 0; box-sizing: border-box; font-family: -applesystem, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; } html, body { height: 100vh; width: 100vw; } #threejs-container { position: block; width: 100%; height: 100%; } </style> <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.7/dat.gui.js"></script> </head> <body> <div id="threejs-container"></div> <script type="module"> // Torus geometry // creating a torus, a donut like shape in Three.js // GUI const gui = new dat.GUI() // sizes let width = window.innerWidth let height = window.innerHeight // scene const scene = new THREE.Scene() scene.background = new THREE.Color(0x262626) // camera const camera = new THREE.PerspectiveCamera(30, width / height, 0.1, 100) camera.position.set(0, 0, 10) const camFolder = gui.addFolder('Camera') camFolder.add(camera.position, 'z').min(10).max(60).step(10) camFolder.open() // torus const geometry = new THREE.TorusGeometry() const material = new THREE.MeshBasicMaterial({ color: 0xffffff, wireframe: true }) const materialFolder = gui.addFolder('Material') materialFolder.add(material, 'wireframe') materialFolder.open() const torus = new THREE.Mesh(geometry, material) scene.add(torus) const torusProps = { radius: 1, tubeRadius: 0.5, radialSegments: 8, tubularSegments: 6, arc: 2 * Math.PI } const props = gui.addFolder('Properties') props .add(torusProps, 'radius', 1, 50) .step(1) .onChange(redraw) .onFinishChange(() => console.dir(torus.geometry)) props.add(torusProps, 'tubeRadius', 0.1, 50).step(0.1).onChange(redraw) props.add(torusProps, 'radialSegments', 1, 50).step(1).onChange(redraw) props.add(torusProps, 'tubularSegments', 1, 50).step(1).onChange(redraw) props.add(torusProps, 'arc', 0, 2 * Math.PI).onChange(redraw) props.open() function redraw() { let newGeometry = new THREE.TorusGeometry( torusProps.radius, torusProps.tubeRadius, torusProps.radialSegments, torusProps.tubularSegments, torusProps.arc ) torus.geometry.dispose() torus.geometry = newGeometry } // responsiveness window.addEventListener('resize', () => { width = window.innerWidth height = window.innerHeight camera.aspect = width / height camera.updateProjectionMatrix() renderer.setSize(window.innerWidth, window.innerHeight) renderer.render(scene, camera) }) // renderer const renderer = new THREE.WebGL1Renderer() renderer.setSize(width, height) renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2)) // animation function animate() { requestAnimationFrame(animate) torus.rotation.x += 0.005 torus.rotation.y += 0.01 renderer.render(scene, camera) } // rendering the scene const container = document.querySelector('#threejs-container') container.append(renderer.domElement) renderer.render(scene, camera) animate() </script> </body> </html>
Output
xthreejs_geometries.htm
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