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Maurice
4570ace78c
Every element kind and Studio tool gets an op, the auto layout and its templates move from the client to shared with a parity fixture, and a pure design engine turns directives into a finished book with design findings.
40 lines
1.9 KiB
TypeScript
40 lines
1.9 KiB
TypeScript
/**
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* The imagery a book map may be drawn on, besides the bundled outlines.
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*
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* Two sources, chosen because they are honestly printable in a book somebody
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* might sell, and moved here from the Studio
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* (client/src/components/Studio/mapSources.ts) so the server's design tool
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* places the same tiles and the same credit the Travel panel does.
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*
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* - Relief: NASA's Blue Marble shaded relief and bathymetry through GIBS. US
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* government imagery whose capabilities document says `<ows:Fees>none` and
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* `<ows:AccessConstraints>none`. Level 8 at most, about 600 metres to the
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* pixel: a country or a continent, not a city. The path is `{z}/{y}/{x}`
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* because WMTS names its axes row then column.
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* - Satellite: EOX's Sentinel-2 cloudless mosaic, the 2016 layer, the one the
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* service releases under CC BY 4.0 (later years are non-commercial).
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* Attribution is part of the licence, so it travels into the document.
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*
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* Constants, not settings: the planner's own street tiles are not offered for
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* print at all (bulk fetching is against the OSM tile policy), so nothing here
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* depends on how an instance is configured.
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*/
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const GIBS = 'https://gibs.earthdata.nasa.gov/wmts/epsg3857/best';
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const RELIEF_LAYER = 'BlueMarble_ShadedRelief_Bathymetry/default/GoogleMapsCompatible_Level8';
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const EOX = 'https://tiles.maps.eox.at/wmts/1.0.0';
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export const BOOK_RELIEF_TILES = `${GIBS}/${RELIEF_LAYER}/{z}/{y}/{x}.jpeg`;
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export const BOOK_SATELLITE_TILES = `${EOX}/s2cloudless_3857/default/g/{z}/{y}/{x}.jpg`;
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/** A map source the engine can place: the tile template and the credit the licence asks for. */
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export interface BookMapSource {
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url: string;
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attribution: string;
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}
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export const BOOK_MAP_SOURCES: Record<'relief' | 'satellite', BookMapSource> = {
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relief: { url: BOOK_RELIEF_TILES, attribution: 'NASA EOSDIS GIBS' },
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satellite: { url: BOOK_SATELLITE_TILES, attribution: 'Sentinel-2 cloudless © EOX (CC BY 4.0)' },
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};
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