threejs-interaction

Three.js raycasting detects pointer input on meshes, lines, and points to enable object selection. It handles clicks, hovers, and touches, providing the necessary intersection data for building interactive UI feedback in 3D scenes.

Configuring Three.js camera controls involves setting up Orbit, Fly, First Person, Pointer Lock, Trackball, or Map controls. These modules manage camera movement and rotation, allowing developers to implement specific navigation styles for various 3D viewer experiences.

Yes, building a 3D product configurator is possible by combining camera controls with touch detection and drag controls. Users can orbit models, tap parts on mobile devices for selection, and drag components while maintaining responsive browser performance.

World-screen coordinate conversion translates 3D spatial positions to 2D screen coordinates. This process supports interactive editing workflows by accurately placing transform handles, enabling drag operations, and synchronizing keyboard inputs with object transformations.

Three.js scene lag during pointer input often stems from unoptimized event management. Implementing performance-minded event handling and efficient raycasting limits unnecessary calculations, ensuring responsive hover feedback and smooth interaction rendering.

Yes, the interaction approach supports box selection and keyboard handling. It integrates transform handles and drag controls with keyboard input, enabling developers to build complex 3D editors and game-like experiences with multi-object selection workflows.