What problem does it solve? Building a sky for a 3D scene often produces mismatched lighting, visible seams, stretched panoramas, or a background image that fails to light PBR objects. This Skill guides the construction of a camera-correct sky where the visible background, reflection environment, and sun lighting all belong to the same atmosphere. ## Core Features & Use Cases - Representation Selection: Choose between a licensed equirectangular panorama, a procedural atmosphere, or a hybrid based on the project's renderer, camera range, and color pipeline. - Coherent Lighting: Align a shared sun direction across the visible disk, directional light, sky rays, and PMREM-generated environment so shadows and reflections agree. - Day-to-Night Transitions: Interpolate horizon/zenith colors, sun glow, fog tint, stars, and cached environments without flashes or double tone mapping. - Use Case: When building an architectural visualization in Three.js, use this Skill to wrap a 360° panorama around the scene, generate a prefiltered PMREM environment for reflections, and animate a golden-hour-to-dusk transition with matching fog and exposure. ## Quick Start Use the 3d-sky-background skill to build a sky background that fits this 3D scene and its lighting.
