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Use the pmtiles-protocol package for the pmtiles example
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,55 +1,7 @@ | ||
| import 'ol/ol.css'; | ||
| import {PMTiles} from 'pmtiles'; | ||
| import {apply} from 'ol-mapbox-style'; | ||
| import {register as registerPMTiles} from 'pmtiles-protocol'; | ||
|
|
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| // Generic transformRequest function that can be used with any style | ||
| // that uses pmtiles:// URLs for sources and tiles | ||
| let styleUrl; | ||
| const pmtilesByUrl = {}; | ||
| const tileUrlRegex = /^pmtiles:\/\/(.+)\/([0-9]+)\/([0-9]+)\/([0-9]+).mvt$/; | ||
| const tileCoordRegex = /\/([0-9]+)\/([0-9]+)\/([0-9]+).mvt$/; | ||
| const transformRequest = async (url, type) => { | ||
| // Workaround for broken URL handling in Safari | ||
| url = url.replace(/^pmtiles:\/\/http(s?)\/\//, 'pmtiles://http$1://'); | ||
| registerPMTiles(); | ||
|
|
||
| if (type === 'Style') { | ||
| styleUrl = url; | ||
| } | ||
| /** @type {PMTiles} */ | ||
| let pmtiles; | ||
| if (url.startsWith('pmtiles://')) { | ||
| const baseUrl = url.slice(10).replace(tileCoordRegex, ''); | ||
| if (!pmtilesByUrl[baseUrl]) { | ||
| pmtilesByUrl[baseUrl] = new PMTiles( | ||
| new URL(url.slice(10), styleUrl).href, | ||
| ); | ||
| } | ||
| pmtiles = pmtilesByUrl[baseUrl]; | ||
| } | ||
| if (!pmtiles) { | ||
| return url; | ||
| } | ||
| if (type === 'Source') { | ||
| const tileJson = await pmtiles.getTileJson(url); | ||
| return `data:application/json,${encodeURIComponent( | ||
| JSON.stringify(tileJson), | ||
| )}`; | ||
| } | ||
| if (type === 'Tiles') { | ||
| const [, baseUrl, z, x, y] = url.match(tileUrlRegex); | ||
| const tileResult = await pmtilesByUrl[baseUrl].getZxy( | ||
| Number(z), | ||
| Number(x), | ||
| Number(y), | ||
| ); | ||
| const data = tileResult?.data ?? new ArrayBuffer(0); | ||
| const objectUrl = URL.createObjectURL(new Blob([data])); | ||
| window.setTimeout(() => URL.revokeObjectURL(objectUrl), 10000); | ||
| return objectUrl; | ||
| } | ||
| return url; | ||
| }; | ||
|
|
||
| apply('map', 'data/protomaps-dark-style.json', { | ||
| transformRequest, | ||
| }); | ||
| apply('map', 'data/protomaps-dark-style.json'); |
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