5d8aa85caa
This avoids to have to many redundant identifier definitions for each projection and ensure to cover most of the existing srsNames
38 lines
775 B
JavaScript
38 lines
775 B
JavaScript
/**
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* @module ol/proj/projections
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*/
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/**
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* @type {Object<string, import("./Projection.js").default>}
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*/
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let cache = {};
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/**
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* Clear the projections cache.
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*/
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export function clear() {
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cache = {};
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}
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/**
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* Get a cached projection by code.
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* @param {string} code The code for the projection.
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* @return {import("./Projection.js").default} The projection (if cached).
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*/
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export function get(code) {
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return (
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cache[code] ||
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cache[code.replace(/urn:(x-)?ogc:def:crs:EPSG:(.*:)?(\w+)$/, 'EPSG:$3')] ||
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null
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);
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}
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/**
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* Add a projection to the cache.
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* @param {string} code The projection code.
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* @param {import("./Projection.js").default} projection The projection to cache.
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*/
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export function add(code, projection) {
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cache[code] = projection;
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}
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