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65 lines
1.3 KiB
65 lines
1.3 KiB
<!doctype html>
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<html>
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<head>
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<script src="https://cdn.jsdelivr.net/npm/@turf/turf@5/turf.min.js"></script>
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<style>
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body {
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width: 100%;
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height: 100%;
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padding: 0;
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margin: 0;
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}
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#left {
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float: left;
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width: 50%;
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height: 100%;
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}
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#geojson {
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height: 400px;
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width: 90%;
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}
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#right {
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width: 48%;
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}
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</style>
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</head>
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<body>
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<div id="container">
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<div id="left">
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<textarea id="geojson">
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</textarea> <br />
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<button id="generateMapframe">Create Mapframe</button>
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</div>
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<pre id="right">
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</pre>
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</div>
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<script>
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document.getElementById('generateMapframe').addEventListener('click', () => {
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let fc;
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try {
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fc = JSON.parse(document.getElementById('geojson').value);
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} catch (e) {
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alert('Invalid GeoJSON');
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return;
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}
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window.foo = fc;
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const center = turf.center(fc);
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const lon = center.geometry.coordinates[0];
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const lat = center.geometry.coordinates[1];
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const mapframe = `
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<mapframe latitude="${lat}" longitude="${lon}" zoom="8">
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${JSON.stringify(fc, null, 2)}
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</mapframe>
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`;
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document.getElementById('right').innerHTML = mapframe;
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});
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</script>
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</body>
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</html>
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