Learn THREEJS with Real Code Examples

Scene -> hierarchical structure of objects

Camera -> viewpoint for rendering

Renderer -> WebGL renderer that draws the scene

Meshes -> geometry + material combinations

Animation loop -> requestAnimationFrame-driven render loop

Scene graph defines objects hierarchy

Renderer draws scene using WebGL

Camera defines viewpoint

Animation loop updates scene per frame

Lights and materials define final appearance

Scene-graph-based rendering

Animation loop with requestAnimationFrame

Component-based mesh/material system

Event-driven input handling

Plugin system for loaders and effects

Web-based 3D games

AR/VR interactive experiences

Product configurators

Scientific and architectural visualizations

Marketing and interactive websites

Ease of use over low-level control

Cross-browser compatibility

Flexible and extensible API

Active community-driven development

Lightweight but feature-rich

Use instanced meshes for repeated objects

Optimize geometry and texture sizes

Batch animations and updates

Use LOD (level-of-detail) techniques

Split scene into manageable chunks

Convert raw WebGL code to Three.js abstractions

Use loaders instead of manual geometry setup

Replace custom shaders with ShaderMaterial if needed

Move animation logic into Three.js mixers

Adopt scene graph for object hierarchy