2025-03-17 09:58:16 +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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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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2025-03-17 09:58:16 +00:00
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<script src="./turf.min.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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<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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// Cesium地形
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viewer.terrainProvider = Cesium.createWorldTerrain({
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requestWaterMask: true, // 请求水体效果所需要的海岸线数据
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requestVertexNormals: true// 请求地形照明数据
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});
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// 深度监测
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viewer.scene.globe.depthTestAgainstTerrain = true;
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let arr1 = [
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[117.182288, 31.854164],
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[117.210254, 31.878324],
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[117.238229, 31.855796],
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[117.242307, 31.826109],
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[117.177277, 31.821475],
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[117.182288, 31.854164]
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]
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let arr2 = [
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[117.267046, 31.842971],
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[117.20963, 31.840323],
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[117.230646, 31.787122],
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[117.28833, 31.799624],
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[117.267046, 31.842971]
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]
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let redPolygon = viewer.entities.add({
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polygon: {
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hierarchy: Cesium.Cartesian3.fromDegreesArray(arr1.flat()),
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material: Cesium.Color.RED.withAlpha(0.5),
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}
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});
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let redPolygon2 = viewer.entities.add({
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polygon: {
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hierarchy: Cesium.Cartesian3.fromDegreesArray(arr2.flat()),
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material: Cesium.Color.GREEN.withAlpha(0.5),
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}
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});
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var poly1 = turf.polygon([arr1]);
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var poly2 = turf.polygon([arr2]);
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var intersection = turf.intersect(poly1, poly2);
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var promise = Cesium.GeoJsonDataSource.load(intersection, {
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clampToGround: true,
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fill: Cesium.Color.BLUE
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});
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promise.then(function (dataSource) {
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viewer.dataSources.add(dataSource);
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});
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var area = turf.area(intersection);
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var hello = viewer.entities.add({
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position: Cesium.Cartesian3.fromDegrees(117.225959, 31.835235),
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label: {
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color: Cesium.Color.WHITE,
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font: '18px',
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outlineColor: Cesium.Color.WHITE,
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text: '相交部分\n'+area+'M²',
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verticalOrigin: Cesium.VerticalOrigin.TOP,
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heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
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disableDepthTestDistance: Number.POSITIVE_INFINITY,
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outlineWidth: 2,
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}
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});
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viewer.flyTo(promise);
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</script>
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</body>
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</html>
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