184 lines
6.6 KiB
HTML
184 lines
6.6 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>cesiumDemoflyMove</title>
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<script src="./Build/Cesium/Cesium.js"></script>
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<style>
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@import url(./Build/Cesium/Widgets/widgets.css);
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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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.menu-container{
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position: absolute;
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top: 30px;
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left: 100px;
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z-index: 9999;
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}
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</style>
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</head>
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<body>
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<div class="menu-container">
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<button onclick="runTrack">开始</button>
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</div>
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<div id="cesiumContainer">
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</div>
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</body>
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<script>
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function runTrack(){
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console.log("===============")
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viewer.clock.shouldAnimate = false;// 暂停
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viewer.trackedEntity = null;
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}
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// 1.cesium 根据SampledPositionProperty与timeline实现轨迹回放功能 详细代码与理解
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// 2.cesium 世界坐标与经纬度转换，四元素与方位角转换
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Cesium.Ion.defaultAccessToken =
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"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI5ZjRjNTZkNC01NDYxLTRhMjQtOGEwZC1kZjA3YzQ5YTJlZDkiLCJpZCI6MjYwODQsInNjb3BlcyI6WyJhc3IiLCJnYyJdLCJpYXQiOjE1ODcxOTMwODN9.prGsSKyAW_9Ow5zHYPhbm3LsQL-ApQw5-5PNJkDaHi8";
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var viewer = new Cesium.Viewer("cesiumContainer", {
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baseLayerPicker: false,
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timeline: true, // 必须为true显示时间线组件（如不想显示可以使用样式层叠表修改display：none） 否则viewer.timeline.zoomTo会报undefined错误
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homeButton: false,
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fullscreenButton: false,
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infoBox: false,
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sceneModePicker: false,
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navigationInstructionsInitiallyVisible: false,
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navigationHelpButton: false,
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animation: false,
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shouldAnimate: true, // 必须为true开启动画 否则不会达到飞机模型飞行动画效果
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});
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// viewer.animation.container.style.display = 'none';//隐藏动画控件
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// viewer.timeline.container.style.display = 'none';//隐藏时间线控件
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// viewer.geocoder.container.style.display = 'none';//隐藏地名查找控件
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// viewer.cesiumWidget.creditContainer.style.display = 'none';//隐藏ceisum标识
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viewer.scene.globe.enableLighting = true;
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let data = [
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{ longitude: 116.405419, latitude: 39.918034, height: 0, time: 0 },
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{ longitude: 120.2821, latitude: 33.918145, height: 0, time: 30 },
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{ longitude: 115.497402, latitude: 39.344641, height: 70000, time: 60 },
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{ longitude: 107.942392, latitude: 29.559967, height: 70000, time: 110 },
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{ longitude: 106.549265, latitude: 29.559967, height: 0, time: 120 },
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];
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// 起始时间
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let start = Cesium.JulianDate.fromDate(new Date());
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// 结束时间
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let stop = Cesium.JulianDate.addSeconds(
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start,
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120,
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new Cesium.JulianDate()
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);
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// 设置始时钟始时间
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viewer.clock.startTime = start.clone();
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// 设置时钟当前时间
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viewer.clock.currentTime = start.clone();
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// 设置始终停止时间
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viewer.clock.stopTime = stop.clone();
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// 时间速率，数字越大时间过的越快
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viewer.clock.multiplier = 1;
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// 时间轴
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viewer.timeline.zoomTo(start, stop);
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// 循环执行,即为2，到达终止时间，重新从起点时间开始
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viewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP;
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// 摄像机聚焦到开始位置
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viewer.camera.flyTo({
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destination: Cesium.Cartesian3.fromDegrees(116.405419, 39.918034, 100000),
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});
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let property = createProperty(data);
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// 添加entity实体
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let planeModel = viewer.entities.add({
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// 和时间轴关联
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availability: new Cesium.TimeIntervalCollection([
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new Cesium.TimeInterval({
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start: start,
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stop: stop,
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}),
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]),
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id: "move",
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position: property,
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// 根据所提供的位置计算模型的朝向
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orientation: new Cesium.VelocityOrientationProperty(property),
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// 模型
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model: {
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uri: "./SampleData/models/CesiumAir/Cesium_Air.glb",
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minimumPixelSize: 128,
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},
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path: {
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resolution: 1,
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material: new Cesium.PolylineGlowMaterialProperty({
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glowPower: 0.1,
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color: Cesium.Color.YELLOW,
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}),
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// leadTime、trailTime 不设置 path全显示
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// leadTime:0,// 设置为0时 模型通过后显示path
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trailTime: 0, // 设置为0时 模型通过后隐藏path
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width: 10,
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},
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});
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viewer.clock.onTick.addEventListener((tick) => {
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// let q = viewer.entities.getById('move').orientation.getValue(tick.currentTime)
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// 根据四元素获取方位角heading ,pitch, roll 设置仰角等
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// if (q == undefined) return
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// let hpr = Cesium.HeadingPitchRoll.fromQuaternion(q)
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// let heading = Cesium.Math.toDegrees(hpr.heading);
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// let pitch = Cesium.Math.toDegrees(hpr.pitch);
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// let roll = Cesium.Math.toDegrees(hpr.roll);
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let position = viewer.entities
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.getById("move")
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.position.getValue(tick.currentTime);
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//世界坐标转换为经纬度
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let ellipsoid = viewer.scene.globe.ellipsoid;
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let cartographic = ellipsoid.cartesianToCartographic(position);
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let lat = Cesium.Math.toDegrees(cartographic.latitude);
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let lng = Cesium.Math.toDegrees(cartographic.longitude);
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let alt = cartographic.height;
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viewer.scene.camera.setView({
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destination: Cesium.Cartesian3.fromDegrees(lng, lat, 100000),
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// orientation: {
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// heading,
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// pitch,
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// roll
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// }
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});
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});
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viewer.clock.onStop.addEventListener((tick) => {
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console.log(tick, "stop");
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// 动画执行到结束时间时调用
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// 逻辑代码 removeEventListener => onTick
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});
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/**
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* 计算飞行路径
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* @param source 数据坐标
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* @returns {SampledPositionProperty|*}
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*/
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function createProperty(source) {
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// 取样位置 相当于一个集合
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let property = new Cesium.SampledPositionProperty();
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for (let i = 0; i < source.length; i++) {
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let time = Cesium.JulianDate.addSeconds(
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start,
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source[i].time,
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new Cesium.JulianDate()
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);
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let position = Cesium.Cartesian3.fromDegrees(
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source[i].longitude,
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source[i].latitude,
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source[i].height
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);
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// 添加位置，和时间对应
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property.addSample(time, position);
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}
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return property;
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}
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</script>
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</html>
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