🏠 3D Interior Walkthrough — Three.js + Rapier Physics

A high-performance and interactive 3D interior walkthrough built using Three.js, Rapier physics, and custom navigation logic.
This project allows the user to walk inside a 3D room, rotate the camera, hover a pointer on objects, and click anywhere to move there smoothly.

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🚀 Features

• ✔ Smooth click-and-drag rotation
• ✔ Forward/backward movement using mouse wheel
• ✔ Rapier3D physics-based collision
• ✔ Pointer hover system that detects objects
• ✔ Click-to-move navigation with obstacle-aware stopping
• ✔ Smart snapping to floor and boundaries
• ✔ Cached GLTF model loading for faster experience
• ✔ Clean modular architecture

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🛠 Technologies Used

• Three.js — 3D rendering
• Rapier3D — physics & collision
• Vite — recommended development server

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▶️ Getting Started

Install dependencies

npm install

Start development server (Vite)

npm run dev

Build for production

npm run build