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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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="./latlng.js"></script>
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<script src="./cesium.map.min.js"></script>
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<script src="./../libs/dat-gui/0.7.6/dat.gui.min.js"></script>
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</head>
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<body style="
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margin: 0;
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overflow: hidden;
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background: #fff;
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width: 100%;
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height: 100%;
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position: absolute;
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top: 0;
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">
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<div id="map" style="margin: 0 auto; width: 100%; height: 100%"></div>
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<!-- ./video.mp4 -->
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<script type="text/javascript">
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Cesium.Ion.defaultAccessToken =
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2025-05-18 11:30:00 +00:00
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"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiJjM2EzNGJmNy02N2RmLTQ0MDMtYjI2MS1hZTJiMTIwZGYwMTYiLCJpZCI6MzA0MzEyLCJpYXQiOjE3NDc3MjM3MTV9.ePQNhuoVuDsi_z00lTm5W26wyW1Adcr1AWetGM6WSXI";
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2025-03-11 08:25:45 +00:00
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const viewer = new Cesium.Viewer("map", {
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// 添加这两行，就不会找烦人的defaultAccessToken了，也不会找在线底图了
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imageryProvider: false,
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baseLayerPicker: false,
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});
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viewer.scene.debugShowFramesPerSecond = true;
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viewer.scene.globe.depthTestAgainstTerrain = true;
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var options = {
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style: "img", // style: img、elec、cva
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crs: "WGS84", // 使用84坐标系，默认为：GCJ02
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};
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viewer.imageryLayers.add(
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new Cesium.ImageryLayer(new Cesium.AMapImageryProvider(options))
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);
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const gui = new dat.GUI();
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gui.domElement.style = 'position:absolute;top:10px;left:10px;'
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viewer.camera.setView({
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destination: Cesium.Cartesian3.fromDegrees(120, 30, 20000),
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});
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let primitive, primitive1;
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const obj = {
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x: 120,
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y: 30,
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z: 2000,
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heading: 0,
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pitch: 180,
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roll: 0,
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fov: 30,
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near: 10,
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far: 3000,
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aspectRatio: 1.4,
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};
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var position = Cesium.Cartesian3.fromDegrees(obj.x, obj.y, obj.z);
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var heading = Cesium.Math.toRadians(obj.heading);
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var pitch = Cesium.Math.toRadians(obj.pitch);
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var roll = Cesium.Math.toRadians(obj.roll);
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var hpr = new Cesium.HeadingPitchRoll(heading, pitch, roll);
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var orientation = Cesium.Transforms.headingPitchRollQuaternion(
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position,
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hpr
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);
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gui.add(obj, 'x', -180, 180).name('经度').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'y', -90, 90).name('纬度').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'z', 100, 10000).name('高度').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'heading', 0, 360).name('偏航角-水平').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'pitch', 0, 360).name('俯仰角-上下').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'roll', 0, 360).name('翻滚角-侧向').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'fov', 0, 180).name('上下角度').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'near', 0, 1000).name('近距').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'far', 0, 5000).name('远距').onChange(function (value) {
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updateFrustum();
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});
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gui.add(obj, 'aspectRatio', 0, 3).name('横向比例').onChange(function (value) {
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updateFrustum();
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});
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function updateFrustum() {
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viewer.scene.primitives.remove(primitive);
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viewer.scene.primitives.remove(primitive1);
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var position = Cesium.Cartesian3.fromDegrees(obj.x, obj.y, obj.z);
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var heading = Cesium.Math.toRadians(obj.heading);
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var pitch = Cesium.Math.toRadians(obj.pitch);
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var roll = Cesium.Math.toRadians(obj.roll);
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var hpr = new Cesium.HeadingPitchRoll(heading, pitch, roll);
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var orientation = Cesium.Transforms.headingPitchRollQuaternion(
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position,
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hpr
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);
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addFrustum(
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position,
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orientation,
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obj.fov,
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obj.near,
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obj.far,
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obj.aspectRatio
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);
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}
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// 绘制
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addFrustum(
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position,
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orientation,
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obj.fov,
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obj.near,
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obj.far,
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obj.aspectRatio
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);
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// 创建视锥体及轮廓线
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function addFrustum(position, orientation, fov, near, far, aspectRatio) {
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let frustum = new Cesium.PerspectiveFrustum({
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// 查看的视场角，绕Z轴旋转，以弧度方式输入
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fov: Cesium.Math.toRadians(fov),
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// 视锥体的宽度/高度
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aspectRatio: aspectRatio,
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// 近面距视点的距离
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near: near,
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// 远面距视点的距离
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far: far,
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});
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let instanceGeo = new Cesium.GeometryInstance({
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geometry: new Cesium.FrustumGeometry({
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frustum: frustum,
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origin: position,
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orientation: orientation,
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vertexFormat: Cesium.VertexFormat.POSITION_ONLY,
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}),
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attributes: {
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color: Cesium.ColorGeometryInstanceAttribute.fromColor(
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new Cesium.Color(1.0, 0.0, 0.0, 0.3)
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),
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},
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});
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let instanceGeoLine = new Cesium.GeometryInstance({
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geometry: new Cesium.FrustumOutlineGeometry({
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frustum: frustum,
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origin: position,
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orientation: orientation,
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}),
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attributes: {
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color: Cesium.ColorGeometryInstanceAttribute.fromColor(
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new Cesium.Color(1.0, 1.0, 1.0, 1)
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),
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},
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});
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primitive = new Cesium.Primitive({
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geometryInstances: [instanceGeo],
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appearance: new Cesium.PerInstanceColorAppearance({
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closed: true,
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flat: true,
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}),
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asynchronous: false,
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});
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primitive1 = new Cesium.Primitive({
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geometryInstances: [instanceGeoLine],
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appearance: new Cesium.PerInstanceColorAppearance({
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closed: true,
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flat: true,
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}),
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asynchronous: false,
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});
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viewer.scene.primitives.add(primitive);
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viewer.scene.primitives.add(primitive1);
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// --------------------------获取顶点坐标---------------------------------------------------------
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let zb = Cesium.FrustumOutlineGeometry.createGeometry(instanceGeo.geometry)
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const positions = zb.attributes.position.values;
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// console.log(positions)
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const temp = [];
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for (let i = 0; i < positions.length; i += 3) {
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temp.push(positions.slice(i, i + 3));
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}
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// console.log(temp)
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const result = [];
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temp.forEach(function (chunk) {
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result.push(latlng.formatPositon(new Cesium.Cartesian3(chunk[0], chunk[1], chunk[2])));
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});
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// console.log(result)
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// --------------------------获取顶点坐标---------------------------------------------------------
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}
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</script>
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</body>
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</html>
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