A physics plugin for Three.js that adds realistic physics simulations to 3D web scenes with minimal code changes.
Physijs is a physics plugin for Three.js that adds realistic physics simulations to 3D web scenes. It solves the problem of integrating complex physics like collisions, gravity, and constraints into Three.js projects without requiring low-level physics engine knowledge. The plugin runs physics calculations in a Web Worker to maintain smooth rendering performance.
Three.js developers who want to add physics interactions to their 3D web applications, games, or simulations without deep physics engine expertise.
Developers choose Physijs because it seamlessly integrates with Three.js conventions, requires minimal code changes, and handles physics computations in a separate thread to prevent performance bottlenecks in rendering.
Physics plugin for Three.js
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Maintains Three.js conventions, allowing developers to swap standard objects with Physijs ones with minimal code changes, as emphasized in the README's philosophy.
Runs physics simulations in a Web Worker to avoid impacting rendering performance, a key feature highlighted for smooth 3D experiences.
Supports multiple object shapes, materials for friction and bounciness, collision detection with events, and constraints like hinges and vehicles, providing a full toolkit for interactive scenes.
Follows a simple five-step setup process, making it accessible for developers familiar with Three.js, as mentioned in the basic setup guide.
The README admits concave shape decomposition is a future feature, limiting complex collision detection for irregular objects in current versions.
Built on ammo.js with a separate cannon.js branch, leading to potential fragmentation and reliance on third-party physics engines that may have their own limitations or maintenance issues.
While beneficial for performance, running physics in a Web Worker requires data serialization between threads, which can introduce latency for real-time, high-frequency simulations.