planning

node_modules/ol/proj/transforms.js

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+/**
+ * @module ol/proj/transforms
+ */
+import { isEmpty } from '../obj.js';
+/**
+ * @private
+ * @type {!Object<string, Object<string, import("../proj.js").TransformFunction>>}
+ */
+var transforms = {};
+/**
+ * Clear the transform cache.
+ */
+export function clear() {
+    transforms = {};
+}
+/**
+ * Registers a conversion function to convert coordinates from the source
+ * projection to the destination projection.
+ *
+ * @param {import("./Projection.js").default} source Source.
+ * @param {import("./Projection.js").default} destination Destination.
+ * @param {import("../proj.js").TransformFunction} transformFn Transform.
+ */
+export function add(source, destination, transformFn) {
+    var sourceCode = source.getCode();
+    var destinationCode = destination.getCode();
+    if (!(sourceCode in transforms)) {
+        transforms[sourceCode] = {};
+    }
+    transforms[sourceCode][destinationCode] = transformFn;
+}
+/**
+ * Unregisters the conversion function to convert coordinates from the source
+ * projection to the destination projection.  This method is used to clean up
+ * cached transforms during testing.
+ *
+ * @param {import("./Projection.js").default} source Source projection.
+ * @param {import("./Projection.js").default} destination Destination projection.
+ * @return {import("../proj.js").TransformFunction} transformFn The unregistered transform.
+ */
+export function remove(source, destination) {
+    var sourceCode = source.getCode();
+    var destinationCode = destination.getCode();
+    var transform = transforms[sourceCode][destinationCode];
+    delete transforms[sourceCode][destinationCode];
+    if (isEmpty(transforms[sourceCode])) {
+        delete transforms[sourceCode];
+    }
+    return transform;
+}
+/**
+ * Get a transform given a source code and a destination code.
+ * @param {string} sourceCode The code for the source projection.
+ * @param {string} destinationCode The code for the destination projection.
+ * @return {import("../proj.js").TransformFunction|undefined} The transform function (if found).
+ */
+export function get(sourceCode, destinationCode) {
+    var transform;
+    if (sourceCode in transforms && destinationCode in transforms[sourceCode]) {
+        transform = transforms[sourceCode][destinationCode];
+    }
+    return transform;
+}
+//# sourceMappingURL=transforms.js.map