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mmdonohue
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threejs-interaction

Implement raycasting, OrbitControls, and mouse/touch input in Three.js scenes.

1|Updated Apr 7, 2025
Search Tags:#interaction#webgl#threejs#orbitcontrols#raycasting#mouse-input
One-click install
npx skills add https://github.com/mmdonohue/zuzu --skill threejs-interaction-mmdonohue
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: threejs-interaction
Source: https://github.com/mmdonohue/zuzu/tree/main/.claude/skills/threejs-interaction
Command: npx skills add https://github.com/mmdonohue/zuzu --skill threejs-interaction-mmdonohue

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Three.js projects often require boilerplate for user interactions, including raycasting for selection, camera controls, and input handling. This Skill provides ready-to-use patterns to implement interaction and navigation in 3D scenes, reducing setup time and ensuring consistent behavior.

Core Features & Use Cases

  • Raycasting-based object selection
  • OrbitControls camera navigation and damping
  • Cross-input support (mouse, touch, pointer)
  • Seamless integration with standard Three.js modules

Quick Start

Import OrbitControls and Raycaster, initialize them with your scene, and connect a click or touch handler to perform raycasting against scene objects to highlight selections.

Frequently Asked Questions about threejs-interaction

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement raycasting for object selection in a Three.js scene?▼

Raycasting in Three.js uses the Raycaster module to cast a ray from the camera through the mouse or touch position, detecting intersections with 3D objects to enable selection. This skill provides ready-to-use patterns for that setup.

How do I set up OrbitControls with damping for Three.js camera navigation?▼

OrbitControls in Three.js enable camera navigation around a scene, and applying damping creates smooth movement. This skill provides integration patterns to initialize and configure OrbitControls with your scene and camera.

Does Three.js raycasting work with both mouse and touch input?▼

Yes, Three.js raycasting works across mouse, touch, and pointer inputs. This skill provides cross-input support patterns to connect input handlers to the Raycaster for reliable object selection on different devices.

What's the best way to reduce boilerplate for Three.js user interactions?▼

The best way to reduce Three.js interaction boilerplate is using ready-made patterns for raycasting and OrbitControls. This skill provides standard module integrations to ensure consistent behavior and reduce setup time for 3D scene navigation.

Do I need a module-based project to use Three.js OrbitControls and Raycaster?▼

Yes, a module-based project setup is required. This skill relies on standard Three.js modules such as OrbitControls and Raycaster, assuming your environment supports ES module imports for proper integration.

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