threejs-lighting

To set up realistic Three.js lighting, combine AmbientLight for base illumination with DirectionalLight for primary shadows, and add PointLight or SpotLight for localized highlights. This Skill guides configuring these light types and their shadow properties to achieve balanced scene illumination.

Ambient light globally illuminates all objects equally without direction, directional light simulates distant parallel rays like the sun and casts shadows, while point light emits from a single spot in all directions. This Skill explains selecting the right light types for specific scene requirements.

Configuring Three.js shadows requires enabling shadow casting on lights and objects, then tuning shadow map resolution and camera bounds. This Skill provides optimization patterns to balance realistic shadow rendering against performance overhead in complex 3D scenes.

Use environment lighting and Image-Based Lighting (IBL) in Three.js when you need realistic reflections and ambient color bleeding from the surrounding environment. This Skill covers integrating environment maps to achieve high-fidelity illumination without relying solely on direct light sources.

Three.js RectAreaLight simulates window-shaped light sources for realistic soft illumination but does not cast shadows. This Skill details the capabilities and limitations of each light type, including RectAreaLight, to help you design accurate architectural renders.

A Three.js scene looks flat when lights lack contrast, shadows are disabled, or environment lighting is missing. This Skill helps tune light intensity, configure shadow maps, and apply IBL to add depth and realistic illumination to your 3D prototypes.