randy
f89dea5805
Mapterhorn (mapterhorn.com, Protomaps-affiliated) publishes pre-built Terrarium-encoded terrain as PMTiles: a global planet.pmtiles (z0-12) plus ~450 regional chunks (z13+). Same pmtiles extract --bbox=... mechanism offline.pmtiles already uses, just against their files — confirmed live against their real manifest and the documented Interlaken example. Replaces fetching every individual tile ourselves (even after this session's earlier concurrency fix, still tens of minutes for a real region) with 1-3 extract calls plus a merge when the bbox spans more than one chunk: seconds, not minutes. Removes CONCURRENT_TILE_FETCHES, write_terrarium_mbtiles, tile_range, lng/lat_to_tile_x/y, fetch_terrarium_tile, and the sqlite3 gem entirely — none of it is needed once the tiles arrive pre-packaged. dem.js's point-elevation lookup (shadow.js's terrain-shadow overlay) hardcoded a 256px PNG tile assumption that Mapterhorn's 512px WebP tiles would have silently broken — now reads the actually-decoded tile's own size and mime type instead of assuming either.
115 lines
4.0 KiB
Plaintext
115 lines
4.0 KiB
Plaintext
= Third-party notices
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:toc:
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:toclevels: 1
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Frontend libraries vendored under `public/vendor/` instead of loaded
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from a CDN, so the app keeps working with no internet access. All are
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BSD-3-Clause licensed.
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[cols="1,1,2"]
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|===
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| Library | Version | Source
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| MapLibre GL JS
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| 6.6.0
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| https://github.com/maplibre/maplibre-gl-js
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| pmtiles (pmtiles.js)
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| 4.5.0
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| https://github.com/protomaps/PMTiles
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| protomaps-themes-base
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| 4.5.0
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| https://github.com/protomaps/basemaps
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| maplibre-contour (Overlays panel's "Contour lines", `public/js/contour.js`)
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| 0.1.0
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| https://github.com/onthegomap/maplibre-contour
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|===
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Also vendored under `public/vendor/`, but not BSD-3-Clause like the
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above — MIT-licensed per its own `package.json` (the monorepo's
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top-level `LICENSE.md` separately places the whole repo in the public
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domain as a work of the US government; either way, no attribution is
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required):
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[cols="1,1,2"]
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|===
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| Library | Version | Source
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| NPS Home Button (`home-button`)
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| 0.0.1-d
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| https://github.com/nationalparkservice/npmap5-plugins/tree/main/home-button
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| NPS Overview Map (`maplibre-gl-overview`)
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| 5.0.1
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| https://github.com/nationalparkservice/npmap5-plugins/tree/maplibre-gl-overview
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|===
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The overview map is vendored from an unmerged branch, not `main` (see
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`docs/nps-resources.adoc`), and converted from its UMD dist build to a
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plain ES module — no functional change except the module wrapper. It
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was also patched for a MapLibre API break: it reads `map.transform`
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(public in the MapLibre ~2.4 this plugin targets) to relax the
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overview's polar pan limit, but MapLibre 6's `Map` no longer exposes
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`.transform` at all — guarded to skip that (cosmetic) adjustment
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instead of throwing when it's absent.
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Offline map text labels need font glyphs too (see
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`docs/architecture.adoc`), vendored under `public/vendor/fonts/` —
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SIL Open Font License, not BSD-3-Clause like the above:
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[cols="1,2"]
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|===
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| Asset | Source
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| Noto Sans Regular/Italic/Medium glyph PBFs (ranges `0-255`,
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`256-511` only)
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| https://github.com/protomaps/basemaps-assets[protomaps/basemaps-assets]
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(`fonts/`, `OFL.txt` included alongside)
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| National Park (Bold weight only, `.woff2`), topbar wordmark
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(`.topbar__brand`, `public/css/style.css`) — see
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`docs/nps-resources.adoc`
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| https://nationalparktypeface.com[nationalparktypeface.com] (Ben
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Hoepner, Andrea Herstowski, Jeremy Shellhorn / DO Studio) — "published
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for free use under the SIL Open Font License" per the site; no
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`OFL.txt` ships in its own download zips, unlike Noto Sans above
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|===
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The online map style (not vendored, fetched at runtime when the
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"Online" layer is selected) is
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https://tiles.openfreemap.org/styles/liberty[OpenFreeMap "liberty"],
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built from https://www.openstreetmap.org[OpenStreetMap] data.
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`terrain.pmtiles` (`lib/maptool/pmtiles_builder.rb`'s in-app
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regeneration, or the manual recipe in `docs/development.adoc`) is
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extracted at build time, not vendored, from
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https://mapterhorn.com[Mapterhorn] — a Protomaps-affiliated project
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publishing pre-built Terrarium-encoded terrain as PMTiles. Per-region
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source licenses vary (CC-BY-4.0 and similar); see
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https://download.mapterhorn.com/attribution.json[their own attribution
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list] for the full provenance.
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Not a frontend asset like the above, but also baked into this app's own
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Docker image (not a separate container the way kiwix-serve/gpsd are —
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see `docs/deployment.adoc`/`docs/development.adoc`): the `pmtiles` CLI
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(`go-pmtiles`), installed as a static binary in the `Dockerfile` for
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`lib/maptool/pmtiles_builder.rb`'s in-app offline.pmtiles/terrain.pmtiles
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regeneration. BSD-3-Clause, same as pmtiles.js/MapLibre GL above.
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[cols="1,1,2"]
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|===
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| Tool | Version | Source
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| go-pmtiles (`pmtiles` CLI)
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| 1.31.2
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| https://github.com/protomaps/go-pmtiles
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|===
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To update a vendored library: download its package (e.g.
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`npm pack <name>@<version>`), replace the corresponding files under
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`public/vendor/<name>/`, and update the version in this file. To
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update go-pmtiles, bump `PMTILES_VERSION` in the `Dockerfile` and the
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version here.
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