mirror of
https://github.com/Jermolene/TiddlyWiki5
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42 lines
824 B
JavaScript
42 lines
824 B
JavaScript
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/*\
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title: $:/plugins/tiddlywiki/geospatial/geotools.js
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type: application/javascript
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module-type: library
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Geospatial utilities
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var turf = require("$:/plugins/tiddlywiki/geospatial/turf.js");
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/*
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Parse a string as a GeoJSON Point
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*/
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exports.parsePoint = function(str) {
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var defaultResult = function() {
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return turf.point([0,0,0]);
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}
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// If the string is missing then return 0,0,0
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if(!str) {
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return defaultResult();
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}
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// Convert to an object
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var json = $tw.utils.parseJSONSafe(str,null);
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if(json === null) {
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return defaultResult();
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}
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// Check it is a valid point
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if(turf.getType(json) !== "Point") {
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return defaultResult();
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}
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// Return the string now we know it is a valid GeoJSON Point
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return json;
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}
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})();
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