Created
June 8, 2025 18:34
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Simple sphere env mapping in three.js
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| import './style.css'; | |
| import * as THREE from 'three'; | |
| // Load environment texture | |
| const texture = new THREE.TextureLoader().load('/test.jpg'); | |
| // Set up scene and camera | |
| const scene = new THREE.Scene(); | |
| const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000); | |
| // Camera at origin | |
| camera.position.set(0, 0, 0); | |
| // Renderer | |
| const renderer = new THREE.WebGLRenderer(); | |
| renderer.setSize(window.innerWidth, window.innerHeight); | |
| document.body.appendChild(renderer.domElement); | |
| // Sphere geometry and basic material | |
| const geometry = new THREE.SphereGeometry(5, 64, 64); | |
| const material = new THREE.MeshBasicMaterial({ map: texture, side: THREE.DoubleSide }); | |
| // Create mesh and add to scene | |
| const sphere = new THREE.Mesh(geometry, material); | |
| scene.add(sphere); | |
| let isDragging = false; | |
| let previousMousePosition = { x: 0, y: 0 }; | |
| // Add event listeners for mouse interaction | |
| document.addEventListener('mousedown', (event) => { | |
| isDragging = true; | |
| previousMousePosition = { x: event.clientX, y: event.clientY }; | |
| }); | |
| document.addEventListener('mousemove', (event) => { | |
| if (isDragging) { | |
| const deltaX = event.clientX - previousMousePosition.x; | |
| const deltaY = event.clientY - previousMousePosition.y; | |
| sphere.rotation.y += deltaX * 0.01; | |
| sphere.rotation.x += deltaY * 0.01; | |
| previousMousePosition = { x: event.clientX, y: event.clientY }; | |
| } | |
| }); | |
| document.addEventListener('mouseup', () => { | |
| isDragging = false; | |
| }); | |
| // Animation loop | |
| function animate() { | |
| requestAnimationFrame(animate); | |
| renderer.render(scene, camera); | |
| } | |
| animate(); | |
| // Handle resize | |
| window.addEventListener('resize', () => { | |
| camera.aspect = window.innerWidth / window.innerHeight; | |
| camera.updateProjectionMatrix(); | |
| renderer.setSize(window.innerWidth, window.innerHeight); | |
| }); |
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