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CesarG503
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threejs-fundamentals

Set up and manipulate Three.js 3D scenes with cameras and renderers.

1|Updated Dec 6, 2025
Search Tags:#javascript#webgl#three.js#3d graphics#scene setup#3d programming
One-click install
npx skills add https://github.com/CesarG503/THREE-game --skill threejs-fundamentals-cesarg503
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: threejs-fundamentals
Source: https://github.com/CesarG503/THREE-game/tree/main/.agent/skills/threejs-skills/threejs-fundamentals
Command: npx skills add https://github.com/CesarG503/THREE-game --skill threejs-fundamentals-cesarg503

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides the foundational knowledge and code examples for setting up and manipulating 3D scenes using the Three.js library, enabling developers to create immersive web-based 3D experiences.

Core Features & Use Cases

  • Scene Setup: Configure scenes, cameras, and renderers for 3D environments.
  • Object Management: Understand and implement the Object3D hierarchy, including transformations (position, rotation, scale) and parenting.
  • Coordinate Systems: Grasp Three.js's right-handed coordinate system.
  • Math Utilities: Utilize Vector3, Matrix4, Quaternion, and Color classes for complex 3D calculations.
  • Use Case: Quickly set up a basic 3D scene with a rotating cube, a camera, and lighting for a web application.

Quick Start

Use the threejs-fundamentals skill to create a new Three.js scene with a perspective camera, a WebGL renderer, and add a simple rotating cube to the scene.

Frequently Asked Questions about threejs-fundamentals

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

FAQPage Schema
How do I set up a basic 3D scene using Three.js and WebGL?▼

To set up a Three.js 3D scene, you configure a scene graph, attach a perspective camera, initialize a WebGL renderer, and add 3D objects like a rotating cube with lighting to the environment.

What is the Object3D hierarchy in Three.js and how do transformations work?▼

The Object3D hierarchy in Three.js manages parent-child relationships for 3D objects, allowing inherited transformations like position, rotation, and scale to be applied across the scene graph structure.

How does the right-handed coordinate system work in Three.js 3D graphics?▼

Three.js uses a right-handed coordinate system for 3D graphics where the positive X-axis points right, the positive Y-axis points up, and the positive Z-axis points toward the viewer.

What math utilities do I need for 3D programming in Three.js?▼

For 3D programming in Three.js, you utilize math utilities like Vector3 for positioning, Matrix4 for transformations, Quaternion for rotation, and Color classes for complex calculations.

Can I use Three.js fundamentals to manage cameras and renderers for web applications?▼

Yes, Three.js fundamentals enable you to configure perspective cameras and WebGL renderers to manage and display 3D environments within web applications without external dependencies.

Why does my 3D object disappear when parenting it in a Three.js scene?▼

When parenting a 3D object in a Three.js scene, its local transformations become relative to the parent, meaning incorrect position or rotation values in the Object3D hierarchy can cause it to render off-screen.

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