geocontext

import distance from "../helpers/distance.js"; import { fetchJSON } from "../helpers/http.js"; import logger from "../logger.js"; // https://data.geopf.fr/wfs/ows?service=WFS&version=2.0.0&request=GetCapabilities export const URBANISME_TYPES = [ 'wfs_scot:scot', 'wfs_du:document', 'wfs_du:zone_urba', 'wfs_du:secteur_cc', 'wfs_du:info_pct', 'wfs_du:info_lin', 'wfs_du:info_surf', 'wfs_du:prescription_pct', 'wfs_du:prescription_lin', 'wfs_du:prescription_surf' ]; export const URBANISME_SOURCE = "Géoplateforme - (WFS Géoportail de l'Urbanisme)"; /** * Get urbanism infos for a given location * * @param {number} lon * @param {number} lat * @returns */ export async function getUrbanisme(lon, lat) { logger.info(`getUrbanisme(${lon},${lat})...`); // note that EPSG:4326 means lat,lon order for GeoServer -> flipped coordinates... const cql_filter = `DWITHIN(the_geom,Point(${lat} ${lon}),30,meters)`; const sourceGeom = { "type": "Point", "coordinates": [lon,lat] }; // TODO : avoid useless geometry retrieval at WFS level const url = 'https://data.geopf.fr/wfs?' + new URLSearchParams({ service: 'WFS', request: 'GetFeature', typeName: URBANISME_TYPES.join(','), outputFormat: 'application/json', cql_filter: cql_filter }).toString(); const featureCollection = await fetchJSON(url); return featureCollection.features.map((feature) => { // parse type from id (ex: "commune.3837") const type = feature.id.split('.')[0]; // ignore geometry and extend properties return Object.assign({ type: type, id: feature.id, bbox: feature.bbox, distance: (distance( sourceGeom, feature.geometry ) * 1000.0) }, feature.properties); }); } const ASSIETTES_SUP_TYPES = [ 'wfs_sup:assiette_sup_p', 'wfs_sup:assiette_sup_l', 'wfs_sup:assiette_sup_s', ]; /** * Get SUP infos for a given location * * @param {number} lon * @param {number} lat * @returns */ export async function getAssiettesServitudes(lon, lat) { logger.info(`getAssiettesServitudes(${lon},${lat})...`); // note that EPSG:4326 means lat,lon order for GeoServer -> flipped coordinates... const cql_filter = `DWITHIN(the_geom,Point(${lat} ${lon}),30,meters)`; const sourceGeom = { "type": "Point", "coordinates": [lon,lat] }; // TODO : avoid useless geometry retrieval at WFS level const url = 'https://data.geopf.fr/wfs?' + new URLSearchParams({ service: 'WFS', request: 'GetFeature', typeName: ASSIETTES_SUP_TYPES.join(','), outputFormat: 'application/json', cql_filter: cql_filter }).toString(); const featureCollection = await fetchJSON(url); return featureCollection.features.map((feature) => { // parse type from id (ex: "commune.3837") const type = feature.id.split('.')[0]; // ignore geometry and extend properties return Object.assign({ type: type, id: feature.id, bbox: feature.bbox, distance: (distance( sourceGeom, feature.geometry ) * 1000.0) }, feature.properties); }); }