CesiumJS Spatial Math

by CesiumGS

CesiumJS Spatial Math is a Frontend skill for Claude Code, published by CesiumGS in cesiumjs-skills.

170 stars20 forkson CesiumGS/cesiumjs-skillsAdded 2026/09/08+44% in starsRepository updated 2026/08/27

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Install in seconds

Install CesiumJS Spatial Math

Copy CesiumJS Spatial Math into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/CesiumGS/cesiumjs-skills/tree/main/skills/cesiumjs-spatial-math ~/.claude/skills/cesiumjs-spatial-math

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/CesiumGS/cesiumjs-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/cesiumjs-spatial-math/SKILL.md in CesiumGS/cesiumjs-skills
Installs to: ~/.claude/skills/cesiumjs-spatial-math
Collection: One of 15 skills cataloged from this repository
Category: Frontend — 732 skills

What CesiumJS Spatial Math does

CesiumJS Spatial Math covers Cartesian, cartographic, ellipsoid, matrix, and transform utilities for converting coordinates and building model matrices. Use it for globe positions, surface projections, and spatial intersection checks.

CesiumJS Spatial Math is cataloged under Frontend on DirSkills. CesiumJS Spatial Math comes from a repository tagged claude-code-plugin, claude-code-skills, codex-skills and github-copilot-skills.

Documentation

README

Excerpt

CesiumJS Spatial Math & Transforms

Version baseline: CesiumJS v1.143 (2026-07-01)

Mathematical foundation for every CesiumJS application: coordinate types, unit conversions, ellipsoid geometry, reference frame transforms, bounding volumes, intersection tests, and projections.

Core Concepts

CesiumJS uses a right-handed Earth-Centered Earth-Fixed (ECEF) coordinate system:

Cartesian3 -- ECEF (x, y, z) in meters. Internal representation for all 3D positions.
Cartographic -- (longitude, latitude, height). Angles are radians, height in meters above ellipsoid.

All angular values in core math are radians. Use Math.toRadians() / Math.toDegrees(). Math types use a static-method-with-result pattern: pass a result parameter to reuse allocations.

This is the opening of the README. Read the full README on GitHub.

Frequently asked about CesiumJS Spatial Math

What else does CesiumGS publish alongside CesiumJS Spatial Math?
CesiumJS Spatial Math is one of 15 skills that DirSkills catalogs from CesiumGS/cesiumjs-skills, the repository it ships in. Its siblings there include CesiumJS 3D Tiles, CesiumJS Camera & Navigation and CesiumJS Core Utilities. Each one is a separate skill with its own page in this directory, installs the same way CesiumJS Spatial Math does, and is maintained by CesiumGS in that same repository. The rest of the collection is listed on the CesiumGS/cesiumjs-skills page.
How does CesiumJS Spatial Math compare to other Frontend skills?
CesiumJS Spatial Math ranks #672 by stars among the 732 Frontend skills in this catalog. The most-starred ones next to it are Angular Developer, Android Clean Architecture and Accessibility. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of CesiumJS Spatial Math against them. Open each page to compare what they document and how they install.