Three.js Fundamentals When to Use - You need to set up the core structure of a Three.js scene. - The task involves scenes, cameras, renderers, transforms, resize handling, or object hierarchy basics. - You want foundational Three.js guidance before working on specialized topics like shaders or post-processing. Quick Start Core Classes Scene Container for all 3D objects, lights, and cameras. Cameras PerspectiveCamera - Most common, simulates human eye. OrthographicCamera - No perspective distortion, good for 2D/isometric. ArrayCamera - Multiple viewports with sub-cameras. CubeCamera - Renders…