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<!DOCTYPE html>
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<html lang="en">
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<head>
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<!-- Use correct character set. -->
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<meta charset="utf-8"/>
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<!-- Tell IE to use the latest, best version. -->
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<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
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<!-- Make the application on mobile take up the full browser screen and disable user scaling. -->
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
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<title>飞行轨迹回放</title>
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<script type="text/javascript" cesium="true" src="https://api.tianditu.gov.cn/cdn/demo/sanwei/static/cesium/Cesium.js"></script>
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<script type="text/javascript" cesium="true" src="https://api.tianditu.gov.cn/cdn/plugins/cesium/Cesium_ext_min.js"></script>
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<link rel="stylesheet" cesium="true" href="https://api.tianditu.gov.cn/cdn/demo/sanwei/static/cesium/Widgets/widgets.css">
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<link href="https://services.arcgisonline.com/arcgis/rest/static/jsapi-template-main.css" rel="stylesheet" type="text/css">
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<link href="https://js.arcgis.com/4.14/esri/css/main.css" rel="stylesheet" type="text/css">
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<script type="text/javascript" src="https://js.arcgis.com/4.14/dojo/dojo.js"></script>
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<script type="text/javascript" src="/Public/js/datasource.js"></script>
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<script src="/Public/js/jquery-1.10.2.min.js"></script>
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<style>
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html,
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body,
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#cesiumContainer {
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width: 100%;
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height: 100%;
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margin: 0;
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padding: 0;
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overflow: hidden;
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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="cesiumContainer"></div>
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<script>
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// var viewer = new Cesium.Viewer("cesiumContainer");
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// viewer.baseLayerPicker.viewModel.selectedImagery = viewer.baseLayerPicker.viewModel.imageryProviderViewModels[12];
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var token = "72e2e7be836401af7e79c232285a552e";
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var tdtUrl = 'http://t{s}.tianditu.gov.cn/';
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var subdomains = ['0', '1', '2', '3', '4', '5', '6', '7'];
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Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3NzI3MDQwMS05M2MxLTQ1MDAtOWYxOS0wZDg0MmI5Zjc2NTUiLCJpZCI6MjMxNzM1LCJpYXQiOjE3MjIzODk2ODB9.zy6rmwWtDzF2890HZR6XGlDxxMImZ8v_Erfnz3gyti4';
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// cesium 初始化
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var viewer = new Cesium.Viewer('cesiumContainer', {
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shouldAnimate: true, //是否允许动画
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selectionIndicator: false,
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baseLayerPicker: true,
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fullscreenButton: false,
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geocoder: false,
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homeButton: false,
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infoBox: false,
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sceneModePicker: false,
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timeline: true,
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navigationHelpButton: false,
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navigationInstructionsInitiallyVisible: false,
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showRenderLoopErrors: false,
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shadows: false,
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});
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viewer.baseLayerPicker.viewModel.selectedImagery = viewer.baseLayerPicker.viewModel.imageryProviderViewModels[12];
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viewer.baseLayerPicker.container.style.display = "none";
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let positionDisplay = addComponent('div', 'absolute', '10px', '10px', '5px', 'white', 1000);
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let buttonNorth = addComponent('button', 'absolute', '50px', '10px', '5px', 'white', 1000, '朝北视角');
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let buttonEast = addComponent('button', 'absolute', '50px', '80px', '5px', 'white', 1000, '朝东视角');
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let buttonSouth = addComponent('button', 'absolute', '50px', '150px', '5px', 'white', 1000, '朝南视角');
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let buttonWest = addComponent('button', 'absolute', '50px', '220px', '5px', 'white', 1000, '朝西视角');
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let buttonCenter = addComponent('button', 'absolute', '50px', '290px', '5px', 'white', 1000, '座舱视角');
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buttonNorth.addEventListener('click', function () {
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switchCameraView(0);
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})
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buttonEast.addEventListener('click', function () {
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switchCameraView(90);
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})
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buttonSouth.addEventListener('click', function () {
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switchCameraView(180);
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})
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buttonWest.addEventListener('click', function () {
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switchCameraView(270);
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})
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let postUpdateEventListener = null;
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buttonCenter.addEventListener('click', function () {
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viewer.trackedEntity.model.uri = plan;
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viewer.trackedEntity.model.scale=2;
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let prePoint = null;
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viewer.scene.postUpdate.addEventListener(
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postUpdateEventListener = () => {
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let curPoint = viewer.trackedEntity.position.getValue(viewer.clock.currentTime);
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if (prePoint) {
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// 计算heading-代表 Z 轴旋转
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let heading = getHeading(prePoint, curPoint);
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//let heading = - Cesium.Math.PI_OVER_TWO;
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// 计算pitch-代表 Y 轴朝向
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//let pitch = Cesium.Math.toRadians(-150);
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let pitch = Cesium.Math.toRadians(-15);
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let range = 20
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viewer.scene.camera.lookAt(curPoint, new Cesium.HeadingPitchRange(heading, pitch, range));
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}
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// 当前点在下一次渲染时为前一个点
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prePoint = Cesium.Cartesian3.clone(curPoint)
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});
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})
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//viewer.animation.container.style.display = "none";
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// 抗锯齿
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viewer.scene.fxaa = true;
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viewer.scene.postProcessStages.fxaa.enabled = false;
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// 水雾特效
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viewer.scene.globe.showGroundAtmosphere = true;
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// 设置最大俯仰角，[-90,0]区间内，默认为-30，单位弧度
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// viewer.scene.screenSpaceCameraController.constrainedPitch = Cesium.Math.toRadians(-20);
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// viewer.scene.screenSpaceCameraController.autoResetHeadingPitch = false;
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// viewer.scene.screenSpaceCameraController.inertiaZoom = 0.5;
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// viewer.scene.screenSpaceCameraController.minimumZoomDistance = 50;
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// viewer.scene.screenSpaceCameraController.maximumZoomDistance = 20000000;
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// viewer.scene.screenSpaceCameraController.zoomEventTypes = [
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// Cesium.CameraEventType.RIGHT_DRAG,
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// Cesium.CameraEventType.WHEEL,
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// Cesium.CameraEventType.PINCH,
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// ];
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// viewer.scene.screenSpaceCameraController.tiltEventTypes = [
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// Cesium.CameraEventType.MIDDLE_DRAG,
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// Cesium.CameraEventType.PINCH,
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// {
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// eventType: Cesium.CameraEventType.LEFT_DRAG,
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// modifier: Cesium.KeyboardEventModifier.CTRL,
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// },
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// {
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// eventType: Cesium.CameraEventType.RIGHT_DRAG,
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// modifier: Cesium.KeyboardEventModifier.CTRL,
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// },
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// ];
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// 取消默认的双击事件
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viewer.cesiumWidget.screenSpaceEventHandler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK);
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var esriImg = new Cesium.ArcGisMapServerImageryProvider({
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url: 'https://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer',
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});
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viewer.imageryLayers.addImageryProvider(esriImg);
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// 叠加影像服务
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// var imgMap = new Cesium.UrlTemplateImageryProvider({
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// url: tdtUrl + 'img_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=img&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=' + token,
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// subdomains: subdomains,
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// tilingScheme : new Cesium.WebMercatorTilingScheme(),
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// maximumLevel : 18
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// });
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// viewer.imageryLayers.addImageryProvider(imgMap);
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//将三维球定位到中国
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// viewer.camera.flyTo({
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// destination: Cesium.Cartesian3.fromDegrees(116.40375810947471, 39.908597112062225, 17850000),
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// orientation: {
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// heading: Cesium.Math.toRadians(348.4202942851978),
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// pitch: Cesium.Math.toRadians(-89.74026687972041),
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// roll: Cesium.Math.toRadians(0)
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// },
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// complete: function callback() {
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// // 定位完成之后的回调函数
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// }
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// });
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let date = new Date('2024-08-06 13:22:04');
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const start = Cesium.JulianDate.fromDate(date);
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const end = 7000;
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var plan = "../Public/Cesium_Air.glb"
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const czml = [
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{
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id: "document",
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version: "1.0",
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clock: {
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interval: `${Cesium.JulianDate.toIso8601(start, 0)}/${Cesium.JulianDate.toIso8601(Cesium.JulianDate.addSeconds(start, end, new Cesium.JulianDate()), 0)}`,
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currentTime: `${Cesium.JulianDate.toIso8601(start, 0)}`,
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multiplier: 6,
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}
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},
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{
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id: "plane",
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availability: `${Cesium.JulianDate.toIso8601(start, 0)}/${Cesium.JulianDate.toIso8601(Cesium.JulianDate.addSeconds(start, end, new Cesium.JulianDate()), 0)}`,
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model: {
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gltf: plan,
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scale: 2.0,
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minimumPixelSize: 48,
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maximumScale: 2000,
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},
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// viewFrom: {
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// cartesian: [-2080, -1715, 779]
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// },
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orientation: {velocityReference: "#position"},
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path: {
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material: {
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solidColor: {
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color: {
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interval: `${Cesium.JulianDate.toIso8601(start, 0)}/${Cesium.JulianDate.toIso8601(Cesium.JulianDate.addSeconds(start, end, new Cesium.JulianDate()), 0)}`,
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rgba: [0, 205, 255, 255]
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}
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}
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},
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width: [
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{
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interval: `${Cesium.JulianDate.toIso8601(start, 0)}/${Cesium.JulianDate.toIso8601(Cesium.JulianDate.addSeconds(start, end, new Cesium.JulianDate()), 0)}`,
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number: 3
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}
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],
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show: [
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{
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interval: `${Cesium.JulianDate.toIso8601(start, 0)}/${Cesium.JulianDate.toIso8601(Cesium.JulianDate.addSeconds(start, end, new Cesium.JulianDate()), 0)}`,
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boolean: true
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}
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]
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},
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position: {
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interpolationAlgorithm: "LAGRANGE",
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interpolationDegree: 5,
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epoch: `${Cesium.JulianDate.toIso8601(start, 0)}`,
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cartographicDegrees:ds
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}
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}
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];
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let dataSource = viewer.dataSources.add(Cesium.CzmlDataSource.load(czml));
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viewer.zoomTo(dataSource);
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dataSource.then(part => {
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// 根据id获取czml中的模型
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let e = part.entities.getById("plane");
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// 相机跟随模型
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viewer.trackedEntity = e;
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//++++++++++++++// 视角跟随模型
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let prePoint = null;
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// 前一个点
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viewer.scene.postRender.addEventListener(() => {
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if (e && viewer.clock.shouldAnimate) {
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// 获取当前时间的位置
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let curPoint = e.position.getValue(viewer.clock.currentTime);
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if (prePoint) {
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// 计算heading-代表 Z 轴旋转
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let heading = getHeading(prePoint, curPoint);
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//let heading = - Cesium.Math.PI_OVER_TWO;
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// 计算pitch-代表 Y 轴朝向
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//let pitch = Cesium.Math.toRadians(-150);
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let pitch = Cesium.Math.toRadians(-10);
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let range = 10;
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//viewer.camera.lookAt(curPoint, new Cesium.HeadingPitchRange(heading, pitch, range));
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let cartographicPosition = Cesium.Cartographic.fromCartesian(curPoint);
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let longitude = Cesium.Math.toDegrees(cartographicPosition.longitude);
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let latitude = Cesium.Math.toDegrees(cartographicPosition.latitude);
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let headingDegrees = Cesium.Math.toDegrees(heading);
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let height = cartographicPosition.height;
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positionDisplay.textContent =
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//"Longitude: " + longitude + "\u00B0" + "\n" +
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//"Latitude: " + latitude + "\u00B0" + "\n" +
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"Height: " + height.toFixed(2) + "M" + "\n" +
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"航向:" + headingDegrees.toFixed(2) + "\u00B0";
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}
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// 当前点在下一次渲染时为前一个点
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prePoint = Cesium.Cartesian3.clone(curPoint)
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}
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})
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});
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function getHeading(pointA, pointB) {
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//建立以点A为原点，X轴为east,Y轴为north,Z轴朝上的坐标系
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const transform = Cesium.Transforms.eastNorthUpToFixedFrame(pointA);
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//向量AB
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const positionvector = Cesium.Cartesian3.subtract(pointB, pointA, new Cesium.Cartesian3());
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//因transform是将A为原点的eastNorthUp坐标系中的点转换到世界坐标系的矩阵
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//AB为世界坐标中的向量
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//因此将AB向量转换为A原点坐标系中的向量，需乘以transform的逆矩阵。
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const vector = Cesium.Matrix4.multiplyByPointAsVector(Cesium.Matrix4.inverse(transform, new Cesium.Matrix4()), positionvector, new Cesium.Cartesian3());
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//归一化
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const direction = Cesium.Cartesian3.normalize(vector, new Cesium.Cartesian3());
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//heading
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const heading = Math.atan2(direction.y, direction.x) - Cesium.Math.PI_OVER_TWO;
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//console.log(direction.y, direction.x,Math.atan2(direction.y, direction.x),heading,Cesium.Math.TWO_PI - Cesium.Math.zeroToTwoPi(heading));
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//return Cesium.Math.TWO_PI - Cesium.Math.zeroToTwoPi(heading) - Cesium.Math.PI_OVER_TWO;
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return Cesium.Math.TWO_PI - Cesium.Math.zeroToTwoPi(heading);
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}
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function updatePosition() {
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var camera = viewer.scene.camera;
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var ellipsoid = viewer.scene.globe.ellipsoid;
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var cartesian = camera.position;
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var height = ellipsoid.cartesianToCartographic(cartesian).height;
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var text = "Latitude: " + camera.positionCartographic.latitude.toDegrees() + "\u00B0" + "\n" +
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"Longitude: " + camera.positionCartographic.longitude.toDegrees() + "\u00B0" + "\n" +
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"Height: " + height + "m";
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positionDisplay.textContent = text;
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}
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function addComponent(name, position, top, left, padding, backgroundColor, zindex, text = '') {
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let component = document.createElement(name);
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component.style.position = position;
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if (text !== undefined || text !== '') {
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component.innerHTML = text;
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}
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component.style.top = top;
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component.style.left = left;
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component.style.zIndex = zindex;
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component.style.backgroundColor = backgroundColor;
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component.style.padding = padding;
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document.body.appendChild(component);
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return component;
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}
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function switchCameraView(heading)
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{
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viewer.scene.postUpdate.removeEventListener(postUpdateEventListener);
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viewer.trackedEntity.model.uri = plan;
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viewer.trackedEntity.model.scale=3;
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heading = Cesium.Math.toRadians(heading);
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// 计算pitch-代表 Y 轴朝向
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//let pitch = Cesium.Math.toRadians(-150);
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let pitch = Cesium.Math.toRadians(-10);
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let range = 200;
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let point = viewer.scene.camera.position
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viewer.scene.camera.lookAt(point, new Cesium.HeadingPitchRange(heading, pitch, range));
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}
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</script>
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</body>
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</html>
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