@orca-fe/x-map/esm/utils/WebViewport.js

import CGCS2000WebViewport from '@cgcs2000/viewport-cgcs2000-project';
import WebMercatorViewport from '@math.gl/web-mercator';
export const getMapViewport = (viewport, type = 'mercator') => {
    const WebViewport = { equirectangular: CGCS2000WebViewport }[type] || WebMercatorViewport;
    const webMercatorViewport = new WebViewport(Object.assign(Object.assign({}, viewport), { longitude: viewport.lng, latitude: viewport.lat, bearing: viewport.rotate }));
    return webMercatorViewport;
};