e946d9d52e
CLAMP_TO_GROUND durch NONE ersetzt bei Schiffen, Erdbeben, GDELT. CLAMP_TO_GROUND verursacht Positionsneuberechnung gegen Terrain bei jeder Kamerabewegung, was zu sichtbarem Mitschleifen fuehrt.
63 Zeilen
2.3 KiB
JavaScript
63 Zeilen
2.3 KiB
JavaScript
/**
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* GDELT Nachrichten-Layer: Geokodierte Echtzeit-News.
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*/
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const GdeltLayer = {
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_viewer: null,
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_dataSource: null,
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_interval: null,
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_count: 0,
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start(viewer) {
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if (this._dataSource) return;
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this._viewer = viewer;
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this._dataSource = new Cesium.CustomDataSource('gdelt');
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viewer.dataSources.add(this._dataSource);
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this._fetch();
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var self = this;
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this._interval = setInterval(function() { self._fetch(); }, 600000);
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},
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stop() {
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if (this._interval) { clearInterval(this._interval); this._interval = null; }
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if (this._dataSource && this._viewer) {
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this._viewer.dataSources.remove(this._dataSource);
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this._dataSource = null;
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}
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this._count = 0;
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},
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_fetch() {
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var self = this;
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fetch('/api/gdelt')
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.then(function(r) { return r.json(); })
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.then(function(data) {
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if (!self._dataSource) return;
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self._dataSource.entities.removeAll();
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var features = data.features || [];
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self._count = features.length;
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features.forEach(function(f) {
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var c = f.geometry.coordinates;
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var p = f.properties || {};
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var title = (p.name || p.title || 'Nachricht').substring(0, 80);
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var url = p.url || '';
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self._dataSource.entities.add({
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position: Cesium.Cartesian3.fromDegrees(c[0], c[1]),
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point: {
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pixelSize: 5,
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color: Cesium.Color.fromCssColorString('#ff8800'),
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outlineColor: Cesium.Color.fromCssColorString('#663300'),
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outlineWidth: 1,
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heightReference: Cesium.HeightReference.NONE,
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disableDepthTestDistance: Number.POSITIVE_INFINITY,
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},
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description: '<div style="font-family:monospace;font-size:12px;color:#ff8800">' +
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'<strong>' + title + '</strong>' +
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(url ? '<br><a href="' + url + '" target="_blank" style="color:#44aaff">Quelle</a>' : '') +
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'</div>',
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});
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});
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})
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.catch(function(e) { console.warn('GDELT fetch error:', e); });
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},
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};
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