513 lines
20 KiB
HTML
513 lines
20 KiB
HTML
<!DOCTYPE html>
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<html>
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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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<title>三维飞行</title>
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<link href="../Build/Cesium/Widgets/widgets.css" rel="stylesheet">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<script type="text/javascript" src="../Build/Cesium/Cesium.js"></script>
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<script type="text/javascript" src="../common/3d/js/Cesium_init.js"></script>
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<style>
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html,body
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{
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width:100%;
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height:100%;
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padding:0;
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margin:0
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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" style="width:100%;height:100%;">
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</div>
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<div id="fly_operator_container" style="position:absolute;z-index:9;top:10px;left:10px;">
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<button onclick="initFly()">初始化</button>
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<button onclick="startFly()">开始飞行</button>
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<button onclick="pauseFly()">暂停飞行</button>
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<button onclick="aircraftView()">跟随视角</button>
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<button onclick="flyBack()">向后飞行</button>
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<button onclick="flyForward()">向前飞行</button>
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<button onclick="stopFly(true)">结束飞行</button>
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<div style="color:white;display:none" class="flyByKeywordContainer">
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<table class="infoPanel">
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<tbody>
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<tr>
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<td>左右: <span id="heading"></span>°</td>
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</tr>
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<tr>
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<td>← 左/→ 右</td>
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</tr>
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<tr>
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<td>上下: <span id="pitch"></span>°</td>
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</tr>
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<tr>
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<td>↑ 上/↓ 下</td>
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</tr>
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<tr>
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<td>倾斜: <span id="roll"></span>°</td>
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</tr>
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<tr>
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<td>← + shift 左/→ + shift 右</td>
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</tr>
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<tr>
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<td>速度: <span id="speed"></span>m/s</td>
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</tr>
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<tr>
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<td>↑ + shift 加速/↓ + shift 减速</td>
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</tr>
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<tr>
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<td>跟随飞机
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<input id="fromBehind" type="checkbox">
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<script>
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//地图资源
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var GoogleMap = ImageryProviderWebExtendTool.createGoogleMapsByUrl(Cesium, { url: "http://mt1.google.cn/vt/lyrs=s&hl=zh-CN&x={x}&y={y}&z={z}" });
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var viewer = new Cesium.Viewer('cesiumContainer', {
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imageryProvider: GoogleMap,
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shouldAnimate : true,
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selectionIndicator: false,
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baseLayerPicker:false,
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homeButton:false,
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animation: true,
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timeline:true,
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geocoder: false,
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sceneModePicker: false,
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navigationHelpButton: false,
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infoBox: false,
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fullscreenButton: false
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});
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var mFlySpeed = 10;
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var mFlyPath = [];
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/**
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* 初始化飞行数据
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**/
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function initFly()
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{
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pauseFly();
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// 数据
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if(!mFlyPath || mFlyPath.length == 0)
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{
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mFlyPath[0] = [
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{longitude:116.538799, dimension:39.9948, height:0, time:0},
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{longitude:116.130034, dimension:38.291387, height:5000, time:120},
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{longitude:116.415192, dimension:34.841955, height:5000, time:240},
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{longitude:117.261468, dimension:31.831171, height:5000, time:360},
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{longitude:115.881671, dimension:28.70164, height:5000, time:480},
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{longitude:116.120835, dimension:24.308311, height:5000, time:600},
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{longitude:113.269254, dimension:23.13956, height:0, time:720}];
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//设置初始位置
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viewer.camera.flyTo({
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destination : Cesium.Cartesian3.fromDegrees(mFlyPath[0][0].longitude , mFlyPath[0][0].dimension , 100000),
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orientation: {
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heading : Cesium.Math.toRadians(20.0), // 方向
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pitch : Cesium.Math.toRadians(-90.0),// 倾斜角度
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roll : 0
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},
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pitchAdjustHeight: -90, // 如果摄像机飞越高于该值，则调整俯仰俯仰的俯仰角度，并将地球保持在视口中。
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maximumHeight:5000, // 相机最大飞行高度
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flyOverLongitude: 100, // 如果到达目的地有2种方式，设置具体值后会强制选择方向飞过这个经度
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});
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}
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// 起始时间
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let start = new Cesium.JulianDate();
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// 结束时间
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let stop = Cesium.JulianDate.addSeconds(start, (mFlyPath[0].length-1)*120,new Cesium.JulianDate());
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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 = mFlySpeed;
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// 循环执行
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viewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP;
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let data = mFlyPath;
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for(let j=0; j<data.length; j++)
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{
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let property = new Cesium.SampledPositionProperty();
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for(let i=0; i<data[j].length; i++){
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let time = Cesium.JulianDate.addSeconds(start, data[j][i].time, new Cesium.JulianDate());
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let position = Cesium.Cartesian3.fromDegrees(data[j][i].longitude, data[j][i].dimension, data[j][i].height);
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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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// 添加模型
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viewer.entities.add({
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id: "fly",
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// 和时间轴关联
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availability : new Cesium.TimeIntervalCollection([new Cesium.TimeInterval({
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start : start,
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stop : stop
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})]),
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position: property,
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//基于位置移动自动计算方向.
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orientation: new Cesium.VelocityOrientationProperty(property),
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// 模型数据,跨域，模型文件必须放本地
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model: {
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uri: '../Apps/SampleData/models/CesiumAir/Cesium_Air.gltf',
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scale: 6,
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minimumPixelSize: 64
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},
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//路径
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path : {
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resolution : 1,
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//设置航线样式，线条颜色，内发光粗细，航线宽度等
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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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width : 30
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}
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});
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}
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}
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/**
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* 开始飞行
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**/
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function startFly()
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{
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viewer.clock.shouldAnimate = true;
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}
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/**
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* 暂停飞行
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**/
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function pauseFly()
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{
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viewer.clock.shouldAnimate = false;
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}
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/**
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* 顶部视图
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**/
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function topView()
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{
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viewer.trackedEntity = undefined;
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viewer.zoomTo(viewer.entities, new Cesium.HeadingPitchRange(0, Cesium.Math.toRadians(-90)));
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}
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/**
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* 侧面视图
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**/
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function sideView()
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{
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viewer.trackedEntity = undefined;
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viewer.zoomTo(viewer.entities, new Cesium.HeadingPitchRange(Cesium.Math.toRadians(-90), Cesium.Math.toRadians(-15), 7500));
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}
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/**
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* 跟随视图
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**/
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function aircraftView()
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{
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viewer.trackedEntity = viewer.entities.getById("fly");
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}
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/**
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* 向后飞行
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**/
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function flyBack()
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{
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mFlySpeed = -10;
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viewer.clock.multiplier = mFlySpeed;
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}
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/**
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* 向前飞行
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**/
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function flyForward()
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{
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mFlySpeed = 10;
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viewer.clock.multiplier = mFlySpeed;
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}
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/**
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* 自定义路线飞行
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**/
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function customFly()
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{
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window.PolyLinePrimitive = (function(){
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function _(positions)
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{
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this.options = {
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polyline : {
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show : true,
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positions : [],
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material : Cesium.Color.CORNFLOWERBLUE,
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width : 5
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}
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};
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this.positions = positions;
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this._init();
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}
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_.prototype._init = function(){
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var _self = this;
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var _update = function(){
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return _self.positions;
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};
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//实时更新polyline.positions
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this.options.polyline.positions = new Cesium.CallbackProperty(_update,false);
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viewer.entities.add(this.options);
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};
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return _;
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})();
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var handler = new Cesium.ScreenSpaceEventHandler(viewer.canvas);
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var positions = [];
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var poly = undefined;
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var lnglatPositions=[];
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handler.setInputAction(function(movement)
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{
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//屏幕坐标转成经纬度坐标
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var cartesian = viewer.scene.camera.pickEllipsoid(movement.position,viewer.scene.globe.ellipsoid);
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if(positions.length == 0)
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{
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positions.push(cartesian.clone());
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}
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positions.push(cartesian);
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var ray = viewer.camera.getPickRay(movement.position);;
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cartesian= viewer.scene.globe.pick(ray, viewer.scene);
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if (!cartesian)
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return;
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let cartographic = Cesium.Cartographic.fromCartesian(cartesian);
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let lng = Cesium.Math.toDegrees(cartographic.longitude);//经度值
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let lat = Cesium.Math.toDegrees(cartographic.latitude);//纬度值
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lnglatPositions.push({longitude:lng, dimension:lat, height:5000, time:lnglatPositions.length*120});
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},Cesium.ScreenSpaceEventType.LEFT_CLICK);
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//鼠标移动事件
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handler.setInputAction(function(movement){
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var cartesian = viewer.camera.pickEllipsoid(movement.endPosition,viewer.scene.globe.ellipsoid);
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if(positions.length >= 2)
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{
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if (!Cesium.defined(poly)) {
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poly = new PolyLinePrimitive(positions);
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}else{
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positions.pop();
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cartesian.y += (1 + Math.random());
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positions.push(cartesian);
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}
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}
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},Cesium.ScreenSpaceEventType.MOUSE_MOVE);
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//双击完成绘制飞行路线操作
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handler.setInputAction(function(movement)
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{
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handler.destroy();
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if(positions.length>0)
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{
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positions[0].height = 0;
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positions[positions.length-1].height =0;
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//先停止之前的飞行，初始化飞行数据，开始飞行
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stopFly(false);
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if(lnglatPositions.length>2)
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{
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lnglatPositions.splice(lnglatPositions.length-1,1);
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mFlyPath[0] = lnglatPositions;
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initFly();
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startFly();
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}
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}
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},Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK);
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}
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/**
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* 停止飞行
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**/
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function stopFly(clearData)
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{
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viewer.trackedEntity = undefined;
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var start = Cesium.JulianDate.fromDate(new Date());
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viewer.clock.startTime = start.clone();
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var stop = Cesium.JulianDate.addSeconds(start, 300000000, new Cesium.JulianDate());
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viewer.clock.stopTime = stop.clone();
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viewer.entities.removeAll();
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if(clearData)
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mFlyPath = [];
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}
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/**
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* 键盘控制飞行
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**/
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function flyByKeyword()
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{
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viewer.entities.removeAll();
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viewer.scene.primitives.removeAll();
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let display = document.getElementsByClassName("flyByKeywordContainer")[0].style.display;
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if(display == 'block')
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document.getElementsByClassName("flyByKeywordContainer")[0].style.display="none";
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else
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document.getElementsByClassName("flyByKeywordContainer")[0].style.display="block";
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var canvas = viewer.canvas;
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canvas.setAttribute('tabindex', '0'); // needed to put focus on the canvas
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canvas.addEventListener('click', function() {
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canvas.focus();
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});
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canvas.focus();
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var scene = viewer.scene;
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var pathPosition = new Cesium.SampledPositionProperty();
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var entityPath = viewer.entities.add({
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position : pathPosition,
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name : 'path',
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path : {
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show : true,
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leadTime : 0,
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trailTime : 60,
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width : 10,
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resolution : 1,
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material : new Cesium.PolylineGlowMaterialProperty({
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glowPower : 0.3,
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taperPower : 0.3,
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color : Cesium.Color.PALEGOLDENROD
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})
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}
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});
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var camera = viewer.camera;
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var controller = scene.screenSpaceCameraController;
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var r = 0;
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var center = new Cesium.Cartesian3();
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var hpRoll = new Cesium.HeadingPitchRoll();
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var hpRange = new Cesium.HeadingPitchRange();
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var speed = 10;
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var deltaRadians = Cesium.Math.toRadians(3.0);
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var position = Cesium.Cartesian3.fromDegrees(116.0744619, 39.0503706, 5000.0);
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var speedVector = new Cesium.Cartesian3();
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var fixedFrameTransform = Cesium.Transforms.localFrameToFixedFrameGenerator('north', 'west');
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var planePrimitive = scene.primitives.add(Cesium.Model.fromGltf({
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url : '../Apps/SampleData/models/CesiumAir/Cesium_Air.glb',
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modelMatrix : Cesium.Transforms.headingPitchRollToFixedFrame(position, hpRoll, Cesium.Ellipsoid.WGS84, fixedFrameTransform),
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minimumPixelSize : 128
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}));
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planePrimitive.readyPromise.then(function(model) {
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// Play and loop all animations at half-speed
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model.activeAnimations.addAll({
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multiplier : 0.5,
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loop : Cesium.ModelAnimationLoop.REPEAT
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});
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// Zoom to model
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r = 2.0 * Math.max(model.boundingSphere.radius, camera.frustum.near);
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controller.minimumZoomDistance = r * 0.5;
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Cesium.Matrix4.multiplyByPoint(model.modelMatrix, model.boundingSphere.center, center);
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var heading = Cesium.Math.toRadians(230.0);
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var pitch = Cesium.Math.toRadians(-20.0);
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hpRange.heading = heading;
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hpRange.pitch = pitch;
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hpRange.range = r * 50.0;
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camera.lookAt(center, hpRange);
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});
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document.addEventListener('keydown', function(e) {
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switch (e.keyCode) {
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case 40:
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if (e.shiftKey) {
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// speed down
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speed = Math.max(--speed, 1);
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} else {
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// pitch down
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hpRoll.pitch -= deltaRadians;
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if (hpRoll.pitch < -Cesium.Math.TWO_PI) {
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hpRoll.pitch += Cesium.Math.TWO_PI;
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}
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}
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break;
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case 38:
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if (e.shiftKey) {
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// speed up
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speed = Math.min(++speed, 100);
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} else {
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// pitch up
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hpRoll.pitch += deltaRadians;
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if (hpRoll.pitch > Cesium.Math.TWO_PI) {
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hpRoll.pitch -= Cesium.Math.TWO_PI;
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}
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}
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break;
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case 39:
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if (e.shiftKey) {
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// roll right
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hpRoll.roll += deltaRadians;
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if (hpRoll.roll > Cesium.Math.TWO_PI) {
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hpRoll.roll -= Cesium.Math.TWO_PI;
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}
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} else {
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// turn right
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hpRoll.heading += deltaRadians;
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if (hpRoll.heading > Cesium.Math.TWO_PI) {
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hpRoll.heading -= Cesium.Math.TWO_PI;
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}
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}
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break;
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case 37:
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if (e.shiftKey) {
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// roll left until
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hpRoll.roll -= deltaRadians;
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if (hpRoll.roll < 0.0) {
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hpRoll.roll += Cesium.Math.TWO_PI;
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}
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} else {
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// turn left
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hpRoll.heading -= deltaRadians;
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if (hpRoll.heading < 0.0) {
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hpRoll.heading += Cesium.Math.TWO_PI;
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}
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}
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break;
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default:
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}
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});
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var headingSpan = document.getElementById('heading');
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var pitchSpan = document.getElementById('pitch');
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var rollSpan = document.getElementById('roll');
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var speedSpan = document.getElementById('speed');
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var fromBehind = document.getElementById('fromBehind');
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viewer.scene.preUpdate.addEventListener(function(scene, time) {
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speedVector = Cesium.Cartesian3.multiplyByScalar(Cesium.Cartesian3.UNIT_X, speed / 10, speedVector);
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position = Cesium.Matrix4.multiplyByPoint(planePrimitive.modelMatrix, speedVector, position);
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pathPosition.addSample(Cesium.JulianDate.now(), position);
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Cesium.Transforms.headingPitchRollToFixedFrame(position, hpRoll, Cesium.Ellipsoid.WGS84, fixedFrameTransform, planePrimitive.modelMatrix);
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if (fromBehind.checked) {
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// Zoom to model
|
||
Cesium.Matrix4.multiplyByPoint(planePrimitive.modelMatrix, planePrimitive.boundingSphere.center, center);
|
||
hpRange.heading = hpRoll.heading;
|
||
hpRange.pitch = hpRoll.pitch;
|
||
camera.lookAt(center, hpRange);
|
||
}
|
||
});
|
||
|
||
viewer.scene.preRender.addEventListener(function(scene, time) {
|
||
headingSpan.innerHTML = Cesium.Math.toDegrees(hpRoll.heading).toFixed(1);
|
||
pitchSpan.innerHTML = Cesium.Math.toDegrees(hpRoll.pitch).toFixed(1);
|
||
rollSpan.innerHTML = Cesium.Math.toDegrees(hpRoll.roll).toFixed(1);
|
||
speedSpan.innerHTML = speed.toFixed(1);
|
||
});
|
||
}
|
||
</script>
|
||
</body>
|
||
</html> |