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Author SHA1 Message Date
1201660c3c feat: implement hover interaction in R3F 2026-03-30 23:41:56 +05:30
3e989a11fd feat: implement hover interaction in vanilla 2026-03-30 23:41:56 +05:30
10 changed files with 191 additions and 0 deletions

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Task 3 — Hover Interaction (R3F)</title>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.jsx"></script>
</body>
</html>

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{
"name": "task-3-r3f",
"version": "0.0.0",
"private": true,
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build"
},
"dependencies": {
"@react-three/fiber": "^8.16.8",
"react": "^18.3.1",
"react-dom": "^18.3.1",
"three": "^0.163.0"
},
"devDependencies": {
"@vitejs/plugin-react": "^4.3.1",
"vite": "^5.0.0"
}
}

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import { Canvas } from '@react-three/fiber'
import Box from './Box'
function App() {
return (
<div style={{ width: '100vw', height: '100vh', background: '#111' }}>
<Canvas camera={{ position: [0, 0, 5], fov: 75 }}>
<Box />
</Canvas>
</div>
)
}
export default App

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import { useRef, useState } from 'react'
import { useFrame } from '@react-three/fiber'
function Box() {
const meshRef = useRef()
const [hovered, setHover] = useState(false)
useFrame(() => {
meshRef.current.rotation.x += 0.01
meshRef.current.rotation.y += 0.01
})
return (
<mesh
ref={meshRef}
onPointerOver={() => {
setHover(true)
document.body.style.cursor = 'pointer'
}}
onPointerOut={() => {
setHover(false)
document.body.style.cursor = 'default'
}}
scale={hovered ? 1.15 : 1}
>
<boxGeometry args={[2, 2, 2]} />
<meshBasicMaterial color={hovered ? 'hotpink' : 'orange'} />
</mesh>
)
}
export default Box

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import { createRoot } from 'react-dom/client'
import App from './App.jsx'
createRoot(document.getElementById('root')).render(<App />)

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import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
export default defineConfig({
plugins: [react()],
})

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Task 3 — Hover Interaction (Vanilla Three.js)</title>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<script type="module" src="main.js"></script>
</body>
</html>

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import * as THREE from 'three'
const scene = new THREE.Scene()
scene.background = new THREE.Color('#111111')
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000)
camera.position.z = 5
const renderer = new THREE.WebGLRenderer()
renderer.setSize(window.innerWidth, window.innerHeight)
document.body.appendChild(renderer.domElement)
const geometry = new THREE.BoxGeometry(2, 2, 2)
const material = new THREE.MeshBasicMaterial({ color: 'orange' })
const cube = new THREE.Mesh(geometry, material)
scene.add(cube)
const raycaster = new THREE.Raycaster()
const mouse = new THREE.Vector2()
let isHovered = false
window.addEventListener('mousemove', (e) => {
mouse.x = (e.clientX / window.innerWidth) * 2 - 1
mouse.y = -(e.clientY / window.innerHeight) * 2 + 1
raycaster.setFromCamera(mouse, camera)
const hits = raycaster.intersectObject(cube)
if (hits.length > 0) {
if (!isHovered) {
isHovered = true
cube.material.color.set('hotpink')
cube.scale.set(1.15, 1.15, 1.15)
document.body.style.cursor = 'pointer'
}
} else {
if (isHovered) {
isHovered = false
cube.material.color.set('orange')
cube.scale.set(1, 1, 1)
document.body.style.cursor = 'default'
}
}
})
window.addEventListener('resize', () => {
camera.aspect = window.innerWidth / window.innerHeight
camera.updateProjectionMatrix()
renderer.setSize(window.innerWidth, window.innerHeight)
})
function animate() {
requestAnimationFrame(animate)
cube.rotation.x += 0.01
cube.rotation.y += 0.01
renderer.render(scene, camera)
}
animate()

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{
"name": "task-3-vanilla",
"version": "0.0.0",
"private": true,
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build"
},
"devDependencies": {
"vite": "^5.0.0"
},
"dependencies": {
"three": "^0.163.0"
}
}

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* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body, html {
width: 100%;
height: 100%;
overflow: hidden;
background: #111;
}
canvas {
display: block;
}