threejs-volumetric-clouds

threejs-volumetric-clouds is a skill for Codex from linegel/threejs-complete-set-of-skill. It costs 49 tokens per session (2,814 once invoked), scanned A, original, ISC.

A guide for creating volumetric clouds in Three.js, a JavaScript 3D graphics library, by rendering cloud density through a bounded volume.

In plain words
What is it for?
It supports weather-shaped cloud density, cloud rendering, cloud shadows, temporal reconstruction, and precipitation effects caused by clouds.
Why use it?
It helps choose suitable cloud detail, resolution, ray-marching, shadows, and temporal reconstruction based on image quality and graphics cost.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit It supports weather-shaped cloud density, cloud rendering, cloud shadows, temporal reconstruction, and precipitation effects caused by clouds.

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Install with agentmods
npx agentmods add skills/linegel/threejs-complete-set-of-skill/threejs-volumetric-clouds
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add linegel/threejs-complete-set-of-skill --skill threejs-volumetric-clouds
Clone the repo
git clone --depth 1 https://github.com/linegel/threejs-complete-set-of-skill

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for threejs-volumetric-clouds

README.md
[![agentmods](https://agentmods.dev/badge/skills/linegel/threejs-complete-set-of-skill/threejs-volumetric-clouds/github.svg)](https://agentmods.dev/skills/linegel/threejs-complete-set-of-skill/threejs-volumetric-clouds)
Your own site
<a href="https://agentmods.dev/skills/linegel/threejs-complete-set-of-skill/threejs-volumetric-clouds"><img src="https://agentmods.dev/badge/skills/linegel/threejs-complete-set-of-skill/threejs-volumetric-clouds/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for threejs-volumetric-clouds

Your own site · 80×15
<a href="https://agentmods.dev/skills/linegel/threejs-complete-set-of-skill/threejs-volumetric-clouds"><img src="https://agentmods.dev/badge/skills/linegel/threejs-complete-set-of-skill/threejs-volumetric-clouds.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,814 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.02814
Opus 5 $0.00024 $0.01407
Sonnet 5 $0.00010 $0.00563
Haiku 4.5 $0.00005 $0.00281

Measured 12d ago against content hash 8651d941ac95, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

threejs-volumetric-clouds scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/threejs-volumetric-clouds/SKILL.md · 275 lines

How it starts

The opening of the file, as written. The whole thing — 275 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Volumetric Clouds

Build a bounded volume whose broad mass comes from weather-scale causes, whose fine detail erodes that mass, and whose optical, shadow, and temporal errors are measurable.

Process

1. Select the claim and workload branches

State the claim first. Procedural weather, coverage, shape, and detail usually form an authored appearance model. Beer-Lambert attenuation is physical for the declared density and coefficients. Dual-lobe phase fits, octave multiple-scattering compensation, powder, and simple ground bounce remain approximations until validated against a transport reference.

Select each independent workload branch:

Decision Select Evidence
Local versus broad full-resolution scissored march for a small projected bound; reduced-resolution march for broad coverage complete-branch GPU cost and image error
Full versus reduced current grid full current grid for low reuse; reduced grid plus reconstruction for coherent broad clouds current-sample, bandwidth, and reconstruction error
Dense versus sparse bounded adaptive march for dense occupancy; conservative macrocell DDA for sparse occupancy saved samples exceed hierarchy build/traversal cost
Receiver shadow none when no external receiver queries cloud shadow; full-column 2D optical depth for ground/opaque receivers; short sun march or depth-aware light product for in-cloud samples admitted receiver query and transmittance error
Precipitation appearance-only cues; or causal liquid/ice emission consumed by $threejs-rain-snow-and-wet-surfaces dimensioned emission, support, transport delay, and conservation error

For causal precipitation, publish liquid and ice mass flux in kg m^-2 s^-1, or interval-integrated areal mass in kg m^-2, explicitly identified with its sample time, sample interval, physics frame/origin, physical support, area/Jacobian convention, fall delay or transport model, owner, contract version, generation, validity, conservation gate, and error. Publish each interval once to $threejs-rain-snow-and-wet-surfaces. The receiver converts flux to interval mass once, preserves the declared support/Jacobian, and applies the declared delay or transport before accumulation.

Read the full file on GitHub · 275 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 275 lines · 49 tokens per session scan A 8651d941ac95

Subscribe to this mod's changes

threejs-volumetric-clouds is a skill published in the GitHub repository linegel/threejs-complete-set-of-skill (6 stars, last pushed 1mo ago), licensed ISC. It adds 49 tokens to every session and 2,814 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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