cesium控制飞机飞行

cesium控制飞机飞行

//飞机飞行
Cesium.Ion.defaultAccessToken='你的token';
//初始化cesium
var viewer = new Cesium.Viewer('cesiumContainer',{baseLayerPicker:false,timeline:false,homeButton:false,fullscreenButton:false,infoBox:false,sceneModePicker:false,navigationInstructionsInitiallyVisible:false,navigationHelpButton:false,shouldAnimate : true
});
var scene=viewer.scene
var canvas = viewer.canvas;
canvas.setAttribute('tabindex', '0'); // 将焦点放在画布上
//如果点击就获取画布焦点
canvas.addEventListener('click', function() {canvas.focus();
});
canvas.focus();//飞行路径的位置
var pathPosition = new Cesium.SampledPositionProperty();
//添加飞机飞行路径
var entityPath = ities.add({position : pathPosition,name : 'path',path : {show : true,leadTime : 0,trailTime : 60,width : 10,resolution : 1,material : new Cesium.PolylineGlowMaterialProperty({glowPower : 0.3,color : Cesium.Color.PALEGOLDENROD})}
});var camera = viewer.camera;
var controller = scene.screenSpaceCameraController;
var r = 0;
//中心点
var center = new Cesium.Cartesian3();//机身模型的偏移参数
var hpRoll = new Cesium.HeadingPitchRoll();
//相机模型的偏移参数
var hpRange = new Cesium.HeadingPitchRange();var speed = 10;
//默认按一下偏移3度
var deltaRadians = Radians(3.0);//飞机位置
var position = Cesium.Cartesian3.fromDegrees(-123.0744619, 44.0503706, 5000.0);
//速度向量
var speedVector = new Cesium.Cartesian3();
//生成一个由两个参考系生成的矩阵
var fixedFrameTransform = Cesium.Transforms.localFrameToFixedFrameGenerator('north', 'west');//添加模型
var planePrimitive = scene.primitives.add(Cesium.Model.fromGltf({//这里需要把模型路径改下(如果你用的还是HelloWord.html的话就用这个,不是的话请自行修改)url : './Apps/SampleData/models/CesiumAir/Cesium_Air.glb',modelMatrix : Cesium.Transforms.headingPitchRollToFixedFrame(position, hpRoll, Cesium.Ellipsoid.WGS84, fixedFrameTransform),minimumPixelSize : 128
}));//动画播放
adyPromise.then(function(model) {// 以半速循环动画model.activeAnimations.addAll({speedup : 0.5,loop : Cesium.ModelAnimationLoop.REPEAT});//r=2*max(模型的半径，相机的最近距离)r = 2.0 * Math.max(model.boundingSphere.radius, ar);//镜头最近距离controller.minimumZoomDistance = r * 0.5;//计算center位置(也为下面的镜头跟随提供了center位置)Cesium.Matrix4.delMatrix, , center);//相机偏移角度var heading = Radians(230.0);var pitch = Radians(-20.0);hpRange.heading = heading;hpRange.pitch = pitch;hpRange.range = r * 50.0;//固定相机camera.lookAt(center, hpRange);
});//键盘监听
document.addEventListener('keydown', function(e) {switch (e.keyCode) {case 40:if (e.shiftKey) {// 按住shift加下箭头减速speed = Math.max(--speed, 1);} else {// 直接按下箭头降低角度hpRoll.pitch -= deltaRadians;if (hpRoll.pitch < -Cesium.Math.TWO_PI) {hpRoll.pitch += Cesium.Math.TWO_PI;}}break;case 38:if (e.shiftKey) {// 按住shift加上箭头加速speed = Math.min(++speed, 100);} else {// 直接按上箭头抬高角度hpRoll.pitch += deltaRadians;if (hpRoll.pitch > Cesium.Math.TWO_PI) {hpRoll.pitch -= Cesium.Math.TWO_PI;}}break;case 39:if (e.shiftKey) {// 飞机本身向右旋转ll += deltaRadians;if (ll > Cesium.Math.TWO_PI) {ll -= Cesium.Math.TWO_PI;}} else {// 向右飞行hpRoll.heading += deltaRadians;if (hpRoll.heading > Cesium.Math.TWO_PI) {hpRoll.heading -= Cesium.Math.TWO_PI;}}break;case 37:if (e.shiftKey) {// 飞机本身向左旋转ll -= deltaRadians;if (ll < 0.0) {ll += Cesium.Math.TWO_PI;}} else {// 向左飞行hpRoll.heading -= deltaRadians;if (hpRoll.heading < 0.0) {hpRoll.heading += Cesium.Math.TWO_PI;}}break;default:}
});var headingSpan = ElementById('heading');
var pitchSpan = ElementById('pitch');
var rollSpan = ElementById('roll');
var speedSpan = ElementById('speed');
var fromBehind = ElementById('fromBehind');//给左边的通知栏更新数据同时刷新飞机位置(这里也是个1ms一次的回调)
viewer.scene.preRender.addEventListener(function(scene, time) {headingSpan.innerHTML = Degrees(hpRoll.heading).toFixed(1);pitchSpan.innerHTML = Degrees(hpRoll.pitch).toFixed(1);rollSpan.innerHTML = ll).toFixed(1);speedSpan.innerHTML = Fixed(1);//选择的笛卡尔分量Cartesian3.UNIT_X（x轴单位长度）乘以一个标量speed/10，得到速度向量speedVectorspeedVector = Cesium.Cartesian3.multiplyByScalar(Cesium.Cartesian3.UNIT_X, speed / 10, speedVector);//飞机的模型矩阵与速度向量speedVector相乘，得到positionposition = Cesium.Matrix4.delMatrix, speedVector, position);//添加一个路径模型(就是白色的尾气)pathPosition.addSample(w(), position);//飞机位置+旋转角度+地球+坐标矩阵=飞机模型矩阵Cesium.Transforms.headingPitchRollToFixedFrame(position, hpRoll, Cesium.Ellipsoid.WGS84, fixedFrameTransform, delMatrix);if (fromBehind.checked) {// 镜头跟随Cesium.Matrix4.delMatrix, , center);hpRange.heading = hpRoll.heading;hpRange.pitch = hpRoll.pitch;camera.lookAt(center, hpRange);}
});