89 lines
3.1 KiB
JavaScript
89 lines
3.1 KiB
JavaScript
import proj4 from 'proj4'
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// Définir les paramètres de la projection WGS84 (EPSG:4326) (GPS)
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proj4.defs('EPSG:4326', '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs');
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// Définir les paramètres de la projection Lambert 93 (EPSG:2154)
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proj4.defs('EPSG:2154', '+proj=lcc +lat_1=49 +lat_2=44 +lat_0=46.5 +lon_0=3 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs');
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// Définir les paramètres de la projection UTM Zone 20N (EPSG:32620)
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proj4.defs('EPSG:32620', '+proj=utm +zone=20 +ellps=WGS84 +datum=WGS84 +units=m +no_defs');
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// Définir les paramètres de la projection UTM_N21 (exemple)
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proj4.defs('EPSG:32621', '+proj=utm +zone=21 +ellps=WGS84 +datum=WGS84 +units=m +no_defs');
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// Définir les paramètres de la projection UTM_N22 (exemple)
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proj4.defs('EPSG:32622', '+proj=utm +zone=22 +ellps=WGS84 +datum=WGS84 +units=m +no_defs');
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// Définir les paramètres de la projection UTM_S38 (exemple)
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proj4.defs('EPSG:32638', '+proj=utm +zone=38 +ellps=WGS84 +datum=WGS84 +units=m +no_defs');
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// Définir les paramètres de la projection UTM_S40 (exemple)
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proj4.defs('EPSG:32740', '+proj=utm +zone=40 +ellps=WGS84 +datum=WGS84 +units=m +no_defs');
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export const transformToGPS = (system, coordX, coordY, ) => {
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if (system.includes('LAMBERT_93')) {
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return lambert93toGPS(coordX, coordY)
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}
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if (system.includes('UTM_N20')) {
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return utmN20toGPS(coordX, coordY)
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}
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if (system.includes('UTM_N21')) {
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return utmN21toGPS(coordX, coordY)
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}
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if (system.includes('UTM_N22')) {
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return utmN22toGPS(coordX, coordY)
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}
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if (system.includes('UTM_S38')) {
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return utmS38toGPS(coordX, coordY)
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}
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if (system.includes('UTM_S40')) {
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return utmS40toGPS(coordX, coordY)
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}
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console.error(system);
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}
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function lambert93toGPS(easting, northing) {
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// Convertir les coordonnées Lambert 93 en WGS84 (GPS)
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const [longitude, latitude] = proj4('EPSG:2154', 'EPSG:4326', [easting, northing]);
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return { latitude, longitude };
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}
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function utmN20toGPS(easting, northing) {
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// Convertir les coordonnées UTM en WGS84 (GPS)
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const [longitude, latitude] = proj4('EPSG:32620', 'EPSG:4326', [easting, northing]);
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return { latitude, longitude };
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}
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function utmN21toGPS(easting, northing) {
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// Convertir les coordonnées UTM_N21 en WGS84 (GPS)
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const [longitude, latitude] = proj4('EPSG:32621', 'EPSG:4326', [easting, northing]);
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return { latitude, longitude };
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}
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function utmN22toGPS(easting, northing) {
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// Convertir les coordonnées UTM_N22 en WGS84 (GPS)
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const [longitude, latitude] = proj4('EPSG:32622', 'EPSG:4326', [easting, northing]);
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return { latitude, longitude };
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}
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function utmS38toGPS(easting, northing) {
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// Convertir les coordonnées UTM_S38 en WGS84 (GPS)
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const [longitude, latitude] = proj4('EPSG:32638', 'EPSG:4326', [easting, northing]);
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return { latitude, longitude };
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}
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function utmS40toGPS(easting, northing) {
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// Convertir les coordonnées UTM_S40 en WGS84 (GPS)
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const [longitude, latitude] = proj4('EPSG:32740', 'EPSG:4326', [easting, northing]);
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return { latitude, longitude };
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}
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