threejs-lighting
by CloudAI-Xthreejs-lighting is a practical Three.js lighting skill for Frontend Development. It helps you choose light types, set shadows, add environment lighting, and fix scenes that look flat, too dark, or overexposed. Use the threejs-lighting guide when you need faster, more consistent scene lighting.
This skill scores 78/100, which means it is a solid listing candidate for directory users. The repository gives enough concrete lighting guidance, examples, and structure for an agent to use it with less guesswork than a generic prompt, though it is still mostly a standalone reference rather than a fully operational workflow pack.
- Clear trigger and scope in frontmatter: lighting, shadows, environment lighting, and performance optimization.
- Substantial instructional content with a quick start, light-type overview table, and multiple sections/code examples.
- Good operational clarity for common Three.js lighting tasks, including ambient, hemisphere, directional, point, spot, and RectAreaLight coverage.
- No install command, scripts, references, or support files, so adoption depends entirely on the SKILL.md guidance.
- Appears to be a reference-style skill rather than a task-automating workflow, so agents may still need some implementation judgment for advanced scenes.
Overview of threejs-lighting skill
What threejs-lighting does
The threejs-lighting skill helps you choose and configure Three.js lights for real scenes: fill light, directional sun light, point lights, spot lights, area-style lighting, shadows, and basic environment lighting. It is most useful when you already have geometry and materials, but the scene looks flat, too dark, overexposed, or inconsistent across devices.
Who should use it
Use the threejs-lighting skill if you are doing Frontend Development with Three.js and need a faster path from “objects render” to “scene reads well.” It is a good fit for product demos, 3D UI, portfolio scenes, configurators, and interactive web visuals where lighting decisions affect usability and visual quality.
What makes it different
This skill is practical rather than theoretical: it starts from light types, shadow support, and common setup patterns. The biggest value is helping you avoid default-lighting mistakes, like relying on ambient light alone or enabling shadows without accounting for performance and material response.
How to Use threejs-lighting skill
threejs-lighting install
Install the threejs-lighting skill in your skills directory, then open SKILL.md first. A typical install flow is:
npx skills add CloudAI-X/threejs-skills --skill threejs-lighting
After install, confirm the skill is available in your agent workflow before asking for a lighting pass. If your toolchain supports skill selection, invoke threejs-lighting explicitly so the model does not fall back to a generic Three.js answer.
What to tell the skill
Give the skill scene facts, not just a vague goal. Strong input usually includes:
- scene type: product mockup, indoor room, outdoor environment, hero object, character, etc.
- desired mood: soft studio, noon sun, dramatic rim light, neutral catalog look
- render constraints: real-time budget, mobile target, shadow tolerance
- material behavior: PBR, metal, glass, matte, emissive
- current problem: too flat, harsh shadows, washed-out colors, flicker, performance drop
Example prompt shape:
“Use threejs-lighting to fix a product scene in Three.js. I need a soft studio look, one hero object, acceptable mobile performance, and subtle shadows. Recommend light types, intensities, and what to avoid.”
Best reading order in the repo
Start with SKILL.md, then read the sections on Quick Start, Light Types Overview, and the individual light entries that match your scene. If you are deciding between realism and performance, inspect shadow-related guidance before copying any example code. The threejs-lighting guide works best when you treat the examples as patterns to adapt, not drop-in presets.
Practical workflow
- Define the look you want and the constraints you cannot break.
- Ask for a minimal lighting setup first, not a fully tuned cinematic rig.
- Add one light type at a time and test the scene with your actual materials.
- Enable shadows only after you confirm the scene needs them.
- Re-run the
threejs-lighting usagestep with screenshots or measurements if the first pass is too flat, too bright, or too slow.
threejs-lighting skill FAQ
Is threejs-lighting only for beginners?
No. Beginners use it to avoid common mistakes, while experienced frontend developers use threejs-lighting to get a structured refresh on light types, shadow tradeoffs, and scene tuning. It is especially useful when you want a fast, opinionated starting point instead of scanning forum answers.
When should I not use this skill?
Do not use threejs-lighting if your problem is unrelated to lighting, such as camera framing, animation timing, model import errors, or shader authoring. It is also a weaker fit if you need highly custom physical simulation or advanced render-pipeline work beyond standard Three.js scene lighting.
How is it better than a normal prompt?
A normal prompt often asks for “better lighting” and gets generic advice. The threejs-lighting skill is more useful when you want a consistent workflow for selecting light types, checking shadow cost, and matching lighting to scene goals. That makes it a better install decision for repeated Three.js work.
Does it fit typical Three.js apps?
Yes, especially if you build browser-based scenes with standard Three.js materials and want predictable visual results. If your app uses a highly specialized rendering stack, the skill may still help at the concept level, but you should expect to adapt the output to your own renderer and constraints.
How to Improve threejs-lighting skill
Give it the scene, not the symptom
The skill performs better when you describe what is in the frame and what “good” means. “The scene is a white product pedestal in a dark room, and I need soft shadows without crushing detail” is far more useful than “make it look better.” For threejs-lighting, that difference usually changes the light mix the model recommends.
Provide constraints early
The most useful improvements come from budget and platform details: target FPS, mobile support, shadow map size limits, and whether environment lighting is already in place. If you want threejs-lighting for Frontend Development, mention bundle sensitivity and runtime cost so the output does not overuse expensive lights or shadows.
Iterate with one variable at a time
If the first result is close but imperfect, ask for a single adjustment: “reduce harshness,” “improve contact shadows,” or “make it warmer without changing brightness.” This keeps the threejs-lighting skill focused and prevents regressions in contrast, readability, or performance.
Share the actual failure mode
The fastest way to improve results is to name the visual problem precisely: flatness, clipping, washed-out PBR, shadow acne, peter-panning, overbright background, or poor separation between subject and backdrop. Then ask the threejs-lighting guide for the specific light or shadow changes that address that failure first.