2025-03-11 08:25:45 +00:00
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<!--********************************************************************
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* by jiawanlong
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*********************************************************************-->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8" />
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<title>2024格美</title>
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2025-03-19 03:00:22 +00:00
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<link rel="stylesheet" href="./../../libs/cesium/Cesium1.98/Widgets/widgets.css">
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<script type="text/javascript" src="./../../libs/cesium/Cesium1.98/Cesium.js"></script>
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2025-03-11 08:25:45 +00:00
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<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
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<script src="./libgif.js"></script>
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</head>
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<body style="margin: 0; overflow: hidden; background: #fff; width: 100%; height: 100%; position: absolute; top: 0">
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<div id="map" style="margin: 0 auto; width: 100%; height: 100%"></div>
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<ul
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style="position: absolute;z-index: 100;bottom: 30px;right: 10px; color: #fff;background: #000000cc; list-style: none;;">
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<li>
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<span style=" border-radius: 10px; width: 10px;height: 10px; display: inline-block; background: GREEN;"></span>
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<span>热带低压</span>
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</li>
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<li>
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<span style=" border-radius: 10px; width: 10px;height: 10px; display: inline-block; background: BLUE;"></span>
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<span>热带风暴</span>
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</li>
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<li>
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<span
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style=" border-radius: 10px; width: 10px;height: 10px; display: inline-block; background: YELLOW;"></span>
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<span>强热带风暴</span>
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</li>
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<li>
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<span
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style=" border-radius: 10px; width: 10px;height: 10px; display: inline-block; background: #FBC712;"></span>
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<span>台风</span>
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</li>
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<li>
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<span style=" border-radius: 10px; width: 10px;height: 10px; display: inline-block; background: RED;"></span>
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<span>超强台风</span>
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</li>
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</ul>
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<script type="text/javascript">
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Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3ZjQ5ZGUzNC1jNWYwLTQ1ZTMtYmNjYS05YTY4ZTVmN2I2MDkiLCJpZCI6MTE3MTM4LCJpYXQiOjE2NzY0NDUyODB9.ZaNSBIfc1sGLhQd_xqhiSsc0yr8oS0wt1hAo9gbke6M'
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const viewer = new Cesium.Viewer('map', {});
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viewer.camera.setView({
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destination: Cesium.Cartesian3.fromDegrees(120, 20, 4025692.0)
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});
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let fengquanLayers = [];
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initJJ();
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initPoints();
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let myEntityCollection = new Cesium.CustomDataSource("initPointsCollection");
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viewer.dataSources.add(myEntityCollection);
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// 历史点和线
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function initPoints() {
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axios.get('./202403.json')
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.then((response) => {
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let points = response.data.points;
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let lineArr = [];
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points.forEach(element => {
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let color = Cesium.Color.RED
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lineArr.push(element.lng)
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lineArr.push(element.lat)
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if (element.strong == "热带低压") {
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color = Cesium.Color.GREEN
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} else if (element.strong == "热带风暴") {
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color = Cesium.Color.BLUE
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} else if (element.strong == "强热带风暴") {
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color = Cesium.Color.YELLOW
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} else if (element.strong == "台风") {
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color = Cesium.Color.fromCssColorString("#FBC712")
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} else if (element.strong == "强台风") {
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color = Cesium.Color.PLUM
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} else if (element.strong == "超强台风") {
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color = Cesium.Color.RED
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}
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var entity1 = new Cesium.Entity({
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position: Cesium.Cartesian3.fromDegrees(element.lng, element.lat),
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point: {
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pixelSize: 5,
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color: color
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},
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});
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myEntityCollection.entities.add(entity1);
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});
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viewer.entities.add({
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polyline: {
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positions: Cesium.Cartesian3.fromDegreesArray(lineArr),
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width: 3,
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clampToGround: true,
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material: Cesium.Color.RED,
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}
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});
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initForeast(points[points.length - 1])
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adds(points)
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})
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}
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// 预测
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function initForeast(data) {
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let forecast = data.forecast;
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let colorArr = [
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Cesium.Color.fromCssColorString("#2D12FB"),
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Cesium.Color.fromCssColorString("#15E5E7"),
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Cesium.Color.fromCssColorString("#15E74A"),
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Cesium.Color.fromCssColorString("#E76F15"),
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Cesium.Color.fromCssColorString("#15D9E7"),
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];
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forecast.forEach((ele, ii) => {
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let lineArr = [];
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ele.forecastpoints.forEach((e) => {
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lineArr.push(e.lng)
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lineArr.push(e.lat)
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var entity1 = new Cesium.Entity({
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position: Cesium.Cartesian3.fromDegrees(e.lng, e.lat),
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point: {
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pixelSize: 7,
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color: colorArr[ii]
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},
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});
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myEntityCollection.entities.add(entity1);
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})
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viewer.entities.add({
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polyline: {
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positions: Cesium.Cartesian3.fromDegreesArray(lineArr),
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width: 2,
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clampToGround: true,
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material: new Cesium.PolylineDashMaterialProperty({
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color: colorArr[ii]
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}),
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}
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});
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})
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}
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// 警戒线
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function initJJ() {
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// 24 线
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viewer.entities.add({
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name: '24',
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polyline: {
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positions: Cesium.Cartesian3.fromDegreesArray([
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[127, 34],
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[127, 22],
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[119, 18],
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[119, 11],
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[113, 4.5],
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[105, 0]
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].flat()),
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width: 2,
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material: Cesium.Color.RED,
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clampToGround: true,
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}
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});
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// 48 线
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viewer.entities.add({
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name: '48',
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polyline: {
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positions: Cesium.Cartesian3.fromDegreesArray([
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[132, 34],
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[132, 22],
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[119, 0],
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[105, 0]
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].flat()),
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width: 2,
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material: Cesium.Color.YELLOW,
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clampToGround: true,
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}
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});
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viewer.entities.add({
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position: Cesium.Cartesian3.fromDegrees(126.129019, 29.104287),
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label: {
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fillColor: Cesium.Color.RED,
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text: '24小时警戒线',
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font: '14pt monospace',
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}
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});
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viewer.entities.add({
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position: Cesium.Cartesian3.fromDegrees(132, 20),
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label: {
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fillColor: Cesium.Color.YELLOW,
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text: '48小时警戒线',
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font: '14pt monospace',
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}
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});
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}
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let iii = 0;
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let currentPointObj;
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let tbentity;
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function adds(data) {
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addTB()
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setInterval(function () {
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let kkk = iii * 2
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currentPointObj = {
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lon: data[iii].lng,
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lat: data[iii].lat,
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circle7: {
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radius1: 350 - kkk,
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radius2: 450 - kkk,
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radius3: 400 - kkk,
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radius4: 350 - kkk,
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},
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circle10: {
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radius1: 250 - kkk,
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radius2: 270 - kkk,
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radius3: 250 - kkk,
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radius4: 220 - kkk,
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},
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circle12: {
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radius1: 170 - kkk,
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radius2: 150 - kkk,
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radius3: 150 - kkk,
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radius4: 170 - kkk,
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}
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};
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tbentity.position = Cesium.Cartesian3.fromDegrees(data[iii].lng, data[iii].lat)
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if (iii > 99) {
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iii = 0
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} else {
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iii = iii + 1
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}
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removeTFLayer();
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addTyphoonCircle();
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}, 200);
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}
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function addTB() {
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let div = document.createElement("div");
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let img = document.createElement("img");
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div.appendChild(img);
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img.src = './tf.gif'
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img.onload = () => {
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let rub = new SuperGif({
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gif: img
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})
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rub.load(() => {
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tbentity = viewer.entities.add({
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position: Cesium.Cartesian3.fromDegrees(75.166493, 39.9060534),
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billboard: {
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image: new Cesium.CallbackProperty(() => {
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return rub.get_canvas().toDataURL("image/png");
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}, false),
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scale: 0.1,
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},
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});
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resolve(entity);
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});
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};
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}
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function removeTFLayer() {
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let arr = fengquanLayers;
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for (let i = 0; i < arr.length; i++) {
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viewer.entities.remove(arr[i])
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}
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fengquanLayers = [];
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}
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function addTyphoonCircle() {
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const circles = ["circle7", "circle10", "circle12"];
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circles.forEach(item => {
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let en = viewer.entities.add({
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id: `tf_polygon_${item}`,
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name: `tf_polygon_${item}`,
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polygon: {
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hierarchy:
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new Cesium.CallbackProperty(() => {
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let points = [];
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if (currentPointObj[item]) {
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points = getTyphoonPolygonPoints(currentPointObj, item)
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} else {
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points = []
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}
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return new Cesium.PolygonHierarchy(Cesium.Cartesian3.fromDegreesArray(points));
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}, false),
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material: Cesium.Color.ORANGE.withAlpha(0.05),
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extrudedHeight: 1000,
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outline: true,
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outlineColor: Cesium.Color.ORANGE,
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outlineWidth: 2,
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},
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polyline: {
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positions:
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new Cesium.CallbackProperty(() => {
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let points = [];
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if (currentPointObj[item]) {
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points = getTyphoonPolygonPoints(currentPointObj, item)
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} else {
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points = []
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}
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return new Cesium.Cartesian3.fromDegreesArray(points);
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}, false),
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material: Cesium.Color.ORANGE,
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width: 2,
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height: 1000,
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}
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})
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fengquanLayers.push(en)
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})
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}
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// 获取台风圈面的坐标
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function getTyphoonPolygonPoints(pointObj, cNum) {
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let points = []
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let center = [pointObj.lon * 1, pointObj.lat * 1]
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let radiusList = [
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pointObj[cNum]['radius1'],
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pointObj[cNum]['radius2'],
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pointObj[cNum]['radius3'],
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pointObj[cNum]['radius4'],
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]
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let startAngleList = [0, 90, 180, 270]
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let fx, fy
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startAngleList.forEach((startAngle, index) => {
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let radius = radiusList[index] / 100
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let pointNum = 90
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let endAngle = startAngle + 90
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let sin, cos, x, y, angle
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for (let i = 0; i <= pointNum; i++) {
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angle = startAngle + ((endAngle - startAngle) * i) / pointNum
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sin = Math.sin((angle * Math.PI) / 180)
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cos = Math.cos((angle * Math.PI) / 180)
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// console.log(center)
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x = center[0] + radius * sin
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y = center[1] + radius * cos
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points.push(x, y);
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if (startAngle == 0 && i == 0) {
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fx = x;
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fy = y;
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}
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}
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})
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points.push(fx, fy);
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return points
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}
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</script>
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</body>
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</html>
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