MapStage

Use this skill when building or tuning a MapStage scene: map/globe projection, satellite, hypsometric relief, Mapterhorn terrain, region isolate, CSS color grade, and JSON export.

When to use

• Need a live MapStage tuner (map vs globe, satellite vs relief, isolate).
• Need to lock paint / CSS / camera, then export JSON into another host.
• Need tiered settlements (capital / large / medium / small / pass / station / ordos).

Do not use the tuner page as the final render host.

Modes

Mode	Purpose
Production stack	Embed MapStage in your app: optional satellite/raster + Mapterhorn DEM (encoding: 'terrarium') + hillshade + OpenFreeMap vector water + CSS filter + city extrusions. Drive look from exported JSON.
Tuner	HTTP page under tuner/ (or the public demo) for sliders, projection, isolate, preset load/export.

Workflow

1. Open the tuner: public demo https://hopechen067.github.io/MapStage/ or cd tuner && python -m http.server and open the local URL printed in the terminal.
2. Tiles: default EOX Sentinel-2 cloudless (on) + Mapterhorn (tuner/map-tiles.config.js). Override with gitignored map-tiles.config.local.js.
3. Apply default preset tuner/preset-antique-default.json (same as tuner/presets/antique-default.json). Schema version 3.
4. Adjust projection / satellite / relief / isolate / CSS / cities until the look locks.
5. Export JSON (copy or download). Confirm version: 3 plus ui.projection, ui.showSatellite, ui.showRelief, ui.showCssFilter, isolate.
6. Migrate those fields into the production MapStage scene (see references).
7. In production: jumpTo camera; wait for idle; optionally pre-cache tiles. Avoid easeTo / flyTo for recorded frames.
8. Always set DEM with encoding: 'terrarium'. Wrong encoding breaks hillshade/terrain.
9. Final frames render from the production host — not from the tuner UI.

Hard rules

• Tiles not bundled — MapStage fetches DEM and basemap at runtime from configured URLs only.
• Only use basemap endpoints you are allowed to use — defaults are public demo tiles (EOX); swap via config when needed.
• encoding: 'terrarium' on the terrain source — mandatory.
• No easeTo / flyTo in recorded production paths; prefer jumpTo + idle.
• Do not host final render on tuner.
• Water on the public tuner is OpenFreeMap / OpenMapTiles vector layers (water / waterway). Export ui.showWater is always false (old GeoJSON overlay is off). Do not expect or commit tuner/assets/water-data.js.

Repo vs skill

git clone of this GitHub repo pulls the whole project. The agent skill is only mapstage/. Install that folder with npx skills add hopechen067/MapStage --skill mapstage -g or gh skill install hopechen067/MapStage mapstage --scope user, or copy it into the host skills directory and reload. Agents do not auto-discover mapstage/SKILL.md from a clone.

References

• references/参数列表说明.md — parameter tables + v3 defaults
• references/tested-config.md — sources, layer order, jumpTo + idle
• references/tuner-workflow.md — HTTP tuner → export → production
• references/city-tier-schema.md — settlement tiers
• schemas/map-preset.schema.json
• schemas/sample-sites.schema.json
• tuner/ — live page, verify script, default preset, sample sites

Agents

See agents/openai.yaml for display name / default prompt.