mirror of
https://github.com/jiawanlong/Cesium-Examples.git
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404 lines
17 KiB
JavaScript
404 lines
17 KiB
JavaScript
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/**
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* @class DEUGlobe.Scene.Roaming
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* @category 场景
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* @classdesc 漫游
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* @param {Object} viewer - Cesium.viewer。
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* @param {Object} options - 参数。
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* @param {Boolean} options.time - 漫游时间 。
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* @param {Boolean} options.multiplier - 飞行速度 默认1。
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*/
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class Roaming{
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constructor(viewer,options){
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this.viewer = viewer;
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this.pause = true;
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options = options || {};
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this.Lines = [];
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this.entity = undefined;
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this.start = undefined;
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this.stop = undefined;
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this.time = !options.time?360:options.time;
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this.multiplier = !options.multiplier?1:options.multiplier;
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this.isPattern = true;
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this.data={};
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this.ifClockLoop=false;
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}
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/**
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*
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*
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* @param {*} Lines 点集合
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* @param {*} time 漫游时间
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* @param {*} start 开始时间节点
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* @returns
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* @memberof Roaming
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*/
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_ComputeRoamingLineProperty (Lines, time) {
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let property = new Cesium.SampledPositionProperty();
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let lineLength = Lines.length;
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let tempTime = time;
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let start = Cesium.JulianDate.now();
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this.start = start;
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let stop = Cesium.JulianDate.addSeconds(start, time, new Cesium.JulianDate());
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this.stop = stop;
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this.viewer.clock.startTime = start.clone();
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this.viewer.clock.stopTime = stop.clone();
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this.viewer.clock.currentTime = start.clone();
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if(this.ifClockLoop){
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this.viewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP;
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}else{
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this.viewer.clock.clockRange = Cesium.ClockRange.CLAMPED; // 行为方式
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this.viewer.clock.clockStep = Cesium.ClockStep.SYSTEM_CLOCK; // 时钟设置为当前系统时间; 忽略所有其他设置。
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}
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this.viewer.clock.shouldAnimate = true;
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this.viewer.clock.multiplier = this.multiplier;
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for (let i = 0; i < lineLength; i++) {
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var time = Cesium.JulianDate.addSeconds(start, i * tempTime / lineLength, new Cesium.JulianDate());
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if(i== lineLength-1){
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time = stop;
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}
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let position = Lines[i];
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if(this.ifTileset) {
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position = this.viewer.scene.clampToHeight(position);
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}
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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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/**
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* @class DEUGlobe.Scene.Roaming.cameraRoaming
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* @classdesc 相机漫游
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* @param {Array} Lines - 点集合 (必填)。
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*/
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cameraRoaming(Lines){
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this.Lines = Lines;
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var property = this._ComputeRoamingLineProperty(this.Lines, this.time);
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this._InitRoaming(property, this.start, this.stop);
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}
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/**
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* @param {*} position computeRoamingLineProperty计算的属性
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* @param {*} start 开始时间节点
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* @param {*} stop 结束时间节点
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* @memberof Roaming
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*/
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_InitRoaming (position, start, stop) {
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this.entity = this.viewer.entities.add({
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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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// 位置
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position: position,
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orientation: new Cesium.VelocityOrientationProperty(position)
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});
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this.entity.position.setInterpolationOptions({// 点插值
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interpolationDegree: 100,
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interpolationAlgorithm: Cesium.HermitePolynomialApproximation
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});
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this.viewer.trackedEntity = this.entity;
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var camera = this.viewer.camera;
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var _this = this;
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var Exection = function () {
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if (_this.entity) {
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var center = _this.entity.position.getValue(_this.viewer.clock.currentTime);
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if (center) camera.lookAt(center, {
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heading:Cesium.Math.toRadians(117.7),
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pitch:Cesium.Math.toRadians(0),
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range:100
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});
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if(_this.viewer.clock.shouldAnimate){
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if(center) _this._realTimeData(center)
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}
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}else{
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_this.viewer.scene.preUpdate.removeEventListener(Exection);
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}
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}
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_this.viewer.scene.preUpdate.addEventListener(Exection);
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}
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/**
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* @class DEUGlobe.Scene.Roaming.modelRoaming
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* @classdesc 模型漫游
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* @param {Object} options - 参数。
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* @param {Array} options.Lines - 点集合 (必填)。
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* @param {Object} options.model - 模型 Cesium.ModelGraphics.ConstructorOptions。
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* @param {Boolean} options.ifAffixedTo - 是否贴地漫游 (默认 false)
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* @param {Boolean} options.ifClockLoop - 是否循环漫游 (默认 false)
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* @param {Boolean} options.interpolation - 是否弧形差值 (默认 false)
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* @param {Boolean} options.model.minimumPixelSize - 模型最小刻度 (默认 64)
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* @param {Object} options.path - 漫游轨迹 Cesium.PathGraphics.ConstructorOptions。
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* @param {Boolean} options.path.show - 漫游轨迹可见性 (默认 false)
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* @param {Object} options.polyline - 绘制折线 Cesium.PolylineGraphics.ConstructorOptions.
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* @param {Boolean} options.polyline.show - 绘制折线可见性 (默认 false)
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* @param {Object} options.label - 标注 Cesium.LabelGraphics.ConstructorOptions
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* @param {Boolean} options.label.show -标注可见性 (默认 false)
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* @param {Object} options.cylinder - 绘制圆柱体 Cesium.CylinderGraphics.ConstructorOptions
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* @param {Boolean} options.cylinder.show - 绘制折线可见性 (默认 false)
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* @param {Boolean} options.cylinder.topRadius -用于指定圆柱体顶部的半径 (默认 0)
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* @param {Boolean} options.cylinder.bottomRadius - 用于指定圆柱体底部的半径。 (默认 200)
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* @param {Boolean} options.cylinder.material - 指定用于填充圆柱体的材料 (默认 Cesium.Color.RED)
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* @param {Boolean} options.cylinder.heightReference - 指定距实体位置的高度是相对于什么的高度。 (默认 Cesium.HeightReference.CLAMP_TO_GROUND)
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* @param {Object} options.polyline.material - 绘制折线颜色 (默认 Cesium.Color.RED)
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* @param {Boolean} options.ifTileset - 是否贴模型漫游 (默认 false)
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*/
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modelRoaming(options){
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this.modelData = {};
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this.Lines = options.Lines;
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var model = {
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minimumPixelSize: 64,
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};
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var path ={
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show: false
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}
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var polyline ={
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show:false,
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material:Cesium.Color.RED,
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}
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var cylinder = {
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show:false,
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topRadius: 0.0,
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bottomRadius: 100.0,
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material: Cesium.Color.RED.withAlpha(0.3),
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heightReference:Cesium.HeightReference.CLAMP_TO_GROUND
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}
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var label ={
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show:false
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}
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this.ifAffixedTo=options.ifAffixedTo?options.ifAffixedTo:false;
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this.ifClockLoop=options.ifClockLoop?options.ifClockLoop:false;
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this.interpolation=options.interpolation?options.interpolation:false;
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this.showLabel=options.showLabel?options.showLabel:false;
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this.ifTileset=options.ifTileset?options.ifTileset:false;
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this.modelData.model = Object.assign(model, options.model);
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this.modelData.path = Object.assign(path, options.path);
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this.modelData.label = Object.assign(label, options.label);
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this.modelData.polyline = Object.assign(polyline, options.polyline);
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this.modelData.cylinder = Object.assign(cylinder, options.cylinder);
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this.modelData.polyline.positions = new Cesium.CallbackProperty(function(){},false);
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this.modelData.cylinder.length = new Cesium.CallbackProperty(function(){},false);
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var property = this._ComputeRoamingLineProperty(this.Lines, this.time);
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this._modelInitRoaming(property, this.start, this.stop, options.model,options.path);
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}
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/**
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* 模型漫游
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*/
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_modelInitRoaming (position, start, stop) {
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var _this = this;
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this.entity = this.viewer.entities.add({
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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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// 位置
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position: position,
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// 计算朝向
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orientation: new Cesium.VelocityOrientationProperty(position),
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// 加载模型
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model:this.modelData.model,
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//添加标题
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label: this.modelData.label,
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path: this.modelData.path,
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});
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if(!_this.ifAffixedTo && _this.interpolation){
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this.entity.position.setInterpolationOptions({// 点插值
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interpolationDegree: 5,
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interpolationAlgorithm: Cesium.LagrangePolynomialApproximation,
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});
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}
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_this.polyline = _this.viewer.entities.add({
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polyline: _this.modelData.polyline,
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});
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_this.cylinder = _this.viewer.entities.add({
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position: position,
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orientation: new Cesium.VelocityOrientationProperty(position),
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cylinder:this.modelData.cylinder
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});
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var positions = [];
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var Exection = function () {
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if (_this.entity) {
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if(_this.viewer.clock.shouldAnimate){
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var center = _this.entity.position.getValue(_this.viewer.clock.currentTime);
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if(_this.modelData.polyline.show){
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positions.push(center);
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_this.modelData.polyline.positions._callback = function(){
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return positions;
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}
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}
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if(_this.ifAffixedTo){
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var geoPt1 = _this.viewer.scene.globe.ellipsoid.cartesianToCartographic(center);
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let terrainProvider = !_this.viewer.terrainProvider.availability?Cesium.createWorldTerrain():_this.viewer.terrainProvider;
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Cesium.sampleTerrainMostDetailed(terrainProvider,[Cesium.Cartographic.fromDegrees(geoPt1.longitude / Math.PI * 180, geoPt1.latitude / Math.PI * 180)]).then(function(updatedPositions) {
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_this.entity.position.addSample(_this.viewer.clock.currentTime, Cesium.Cartesian3.fromRadians(
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updatedPositions[0].longitude,
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updatedPositions[0].latitude,
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updatedPositions[0].height
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));
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});
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}
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if(_this.ifTileset) {
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_this.entity.position.addSample(_this.viewer.clock.currentTime, _this.viewer.scene.clampToHeight(center, [_this.entity]));
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}
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if(_this.modelData.cylinder.show){
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_this.modelData.cylinder.length._callback = function(){
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let length = _this.viewer.scene.globe.ellipsoid.cartesianToCartographic(center)
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return length.height;
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}
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}
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if(center)_this._realTimeData(center)
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}
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}else{
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_this.viewer.scene.preUpdate.removeEventListener(Exection);
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}
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}
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_this.viewer.scene.preUpdate.addEventListener(Exection);
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_this.changingView(2);
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}
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/**
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*漫游的暂停和继续
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*
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* @param {*} state bool类型 false为暂停，ture为继续
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* @memberof Roaming
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*/
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PauseOrContinue (state) {
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this.viewer.clock.shouldAnimate = state;
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}
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/**
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*改变飞行的速度
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*
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* @param {} value 整数类型
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* @memberof Roaming
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*/
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ChangeRoamingSpeed (value) {
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this.viewer.clock.multiplier = value;
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}
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/**
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*
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*取消漫游
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* @memberof Roaming
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*/
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EndRoaming () {
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if (this.entity !== undefined) {
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this.viewer.entities.remove(this.entity);
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this.viewer.entities.remove(this.polyline);
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this.viewer.entities.remove(this.cylinder);
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this.entity = undefined;
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this.polyline = undefined;
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this.cylinder = undefined;
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this.PauseOrContinue (false);
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}
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}
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/**
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*
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*获取飞行数据
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* @memberof Roaming
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* @param {RequestCallback} callback - 回调函数 (单位米)。
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*/
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getData(callback){
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var _this = this;
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Object.defineProperty(this.data,'shouldAnimate',{
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set: function(value) {
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return callback(_this.data)
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}
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})
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}
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/**
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*切换视角
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* @memberof Roaming、
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* @param {Boolean} value 1视角跟踪 2上方视角 3侧方视角 4自定义视角
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* @param {Object} options 参数 自定义视角 模式时才有效
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* @param {Object} options.heading 可选 航向角（弧度）默认 0
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* @param {Object} options.pitch 可选俯仰角（弧度） 默认 0。
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* @param {Object} options.range 可选距中心的距离，以米为单位 默认 0。
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*/
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changingView(value,options){
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var options = options || {};
|
|||
|
|
this.viewer.trackedEntity = undefined;
|
|||
|
|
if(value == 1){
|
|||
|
|
this.viewer.trackedEntity = this.entity;
|
|||
|
|
}else if(value == 2){
|
|||
|
|
this.viewer.zoomTo(
|
|||
|
|
this.viewer.entities,
|
|||
|
|
new Cesium.HeadingPitchRange(0, Cesium.Math.toRadians(-90))
|
|||
|
|
);
|
|||
|
|
}else if(value == 3){
|
|||
|
|
this.viewer.zoomTo(
|
|||
|
|
this.viewer.entities,
|
|||
|
|
new Cesium.HeadingPitchRange(
|
|||
|
|
Cesium.Math.toRadians(-90),
|
|||
|
|
Cesium.Math.toRadians(-15),
|
|||
|
|
8000
|
|||
|
|
)
|
|||
|
|
);
|
|||
|
|
}else if(value == 4){
|
|||
|
|
this.viewer.zoomTo(
|
|||
|
|
this.viewer.entities,
|
|||
|
|
new Cesium.HeadingPitchRange(
|
|||
|
|
Cesium.Math.toRadians(!options.heading?0:options.heading),
|
|||
|
|
Cesium.Math.toRadians(!options.pitch?0:options.pitch),
|
|||
|
|
!options.range?0:options.range
|
|||
|
|
)
|
|||
|
|
);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
//实时数据
|
|||
|
|
_realTimeData(center){
|
|||
|
|
var _this = this;
|
|||
|
|
_this.data.shouldAnimate = _this.viewer.clock.shouldAnimate;
|
|||
|
|
_this.data.totalLength = _this._disTance(_this.Lines);//总长度
|
|||
|
|
_this.data.totalTime = _this._formateSeconds(_this.time); //总时长
|
|||
|
|
var delTime = Cesium.JulianDate.secondsDifference(_this.viewer.clock.currentTime,_this.viewer.clock.startTime);//已经漫游的时间
|
|||
|
|
_this.data.delTime = _this._formateSeconds(delTime);
|
|||
|
|
_this.data.roamingLength =( _this.data.totalLength/_this.time*delTime).toFixed(3);//已经漫游长度
|
|||
|
|
var geoPt1 = _this.viewer.scene.globe.ellipsoid.cartesianToCartographic(center);
|
|||
|
|
_this.data.longitude = (geoPt1.longitude / Math.PI * 180).toFixed(6);//经度
|
|||
|
|
_this.data.latitude = (geoPt1.latitude / Math.PI * 180).toFixed(6);//纬度
|
|||
|
|
// _this.data.roamingElevation = (geoPt1.height).toFixed(2)==-0.00?0:(geoPt1.height).toFixed(2);//漫游高程
|
|||
|
|
// _this.data.liftoffHeight = (_this.data.roamingElevation-_this.data.terrainHeight).toFixed(2);//离地距离
|
|||
|
|
let terrainProvider = !_this.viewer.terrainProvider.availability?Cesium.createWorldTerrain():_this.viewer.terrainProvider;
|
|||
|
|
Cesium.sampleTerrainMostDetailed(terrainProvider,[Cesium.Cartographic.fromDegrees(geoPt1.longitude / Math.PI * 180, geoPt1.latitude / Math.PI * 180)]).then(function(updatedPositions) {
|
|||
|
|
_this.data.roamingElevation = (updatedPositions[0].height+geoPt1.height).toFixed(2);//漫游高程
|
|||
|
|
_this.data.terrainHeight = (updatedPositions[0].height).toFixed(2);//地面高程
|
|||
|
|
_this.data.liftoffHeight = (_this.data.roamingElevation-_this.data.terrainHeight).toFixed(2);//离地距离
|
|||
|
|
});
|
|||
|
|
_this.data.progress = (_this.data.roamingLength/_this.data.totalLength*100).toFixed(0)+'%';//进度
|
|||
|
|
}
|
|||
|
|
/**
|
|||
|
|
*计算距离
|
|||
|
|
*/
|
|||
|
|
_disTance(positions){
|
|||
|
|
var distance = 0;
|
|||
|
|
for (var i = 0; i < positions.length - 1; i++) {
|
|||
|
|
var point1cartographic = Cesium.Cartographic.fromCartesian(positions[i]);
|
|||
|
|
var point2cartographic = Cesium.Cartographic.fromCartesian(positions[i+1]);
|
|||
|
|
/**根据经纬度计算出距离**/
|
|||
|
|
var geodesic = new Cesium.EllipsoidGeodesic();
|
|||
|
|
geodesic.setEndPoints(point1cartographic, point2cartographic);
|
|||
|
|
var s = geodesic.surfaceDistance;
|
|||
|
|
//返回两点之间的距离
|
|||
|
|
s = Math.sqrt(Math.pow(s, 2) + Math.pow(point2cartographic.height - point1cartographic.height, 2));
|
|||
|
|
// s=Math.abs(point2cartographic.height - point1cartographic.height);
|
|||
|
|
distance = distance + s;
|
|||
|
|
}
|
|||
|
|
return distance.toFixed(3);
|
|||
|
|
}
|
|||
|
|
//将秒转化为时分秒
|
|||
|
|
_formateSeconds(endTime){
|
|||
|
|
let secondTime = parseInt(endTime)//将传入的秒的值转化为Number
|
|||
|
|
let min = 0// 初始化分
|
|||
|
|
let h =0// 初始化小时
|
|||
|
|
let result=''
|
|||
|
|
if(secondTime>=60){//如果秒数大于60，将秒数转换成整数
|
|||
|
|
min=parseInt(secondTime/60)//获取分钟，除以60取整数，得到整数分钟
|
|||
|
|
secondTime=parseInt(secondTime%60)//获取秒数，秒数取佘，得到整数秒数
|
|||
|
|
if(min>=60){//如果分钟大于60，将分钟转换成小时
|
|||
|
|
h=parseInt(min/60)//获取小时，获取分钟除以60，得到整数小时
|
|||
|
|
min=parseInt(min%60) //获取小时后取佘的分，获取分钟除以60取佘的分
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
h = h.toString()==0?'':h.toString()+'小时';
|
|||
|
|
min = min.toString() ==0?'':min.toString()+'分钟';
|
|||
|
|
secondTime = secondTime.toString()==0?'':secondTime.toString()+'秒';
|
|||
|
|
result=`${h+min+secondTime}`
|
|||
|
|
return result==''?'0秒':result
|
|||
|
|
}
|
|||
|
|
}
|