forked from songliuchen/cesium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathfly.html
499 lines (467 loc) · 20 KB
/
fly.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>三维飞行</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cesiumjs.org/releases/1.58/Build/Cesium/Widgets/widgets.css" rel="stylesheet">
<script src="https://cesiumjs.org/releases/1.58/Build/Cesium/Cesium.js"></script>
<style>
html,body
{
width:100%;
height:100%;
padding:0;
margin:0
}
</style>
</head>
<body>
<div id = "cesium_container" style="width:100%;height:100%;">
</div>
<div id="fly_operator_container" style="position:absolute;z-index:9;top:10px;left:10px;">
<button onclick="initFly()">初始化</button>
<button onclick="startFly()">开始飞行</button>
<button onclick="pauseFly()">暂停飞行</button>
<button onclick="topView()">头顶视角</button>
<button onclick="sideView()">侧面视角</button>
<button onclick="aircraftView()">跟随视角</button>
<button onclick="flyBack()">向后飞行</button>
<button onclick="flyForward()">向前飞行</button>
<button onclick="customFly()">自定义路线</button>
<button onclick="stopFly(true)">停止飞行</button>
<button onclick="flyByKeyword()">上下左右键盘控制飞行</button>
<div style="color:white;display:none" class="flyByKeywordContainer">
<table class="infoPanel">
<tbody>
<tr>
<td>左右: <span id="heading"></span>°</td>
</tr>
<tr>
<td>← 左/→ 右</td>
</tr>
<tr>
<td>上下: <span id="pitch"></span>°</td>
</tr>
<tr>
<td>↑ 上/↓ 下</td>
</tr>
<tr>
<td>倾斜: <span id="roll"></span>°</td>
</tr>
<tr>
<td>← + shift 左/→ + shift 右</td>
</tr>
<tr>
<td>速度: <span id="speed"></span>m/s</td>
</tr>
<tr>
<td>↑ + shift 加速/↓ + shift 减速</td>
</tr>
<tr>
<td>跟随飞机
<input id="fromBehind" type="checkbox">
</td>
</tr>
</tbody>
</table>
</div>
</div>
<script>
var mViewer = new Cesium.Viewer("cesium_container",{shouldAnimate:true});
var mFlySpeed = 10;
var mFlyPath = [];
/**
* 初始化飞行数据
**/
function initFly()
{
pauseFly();
// 数据
if(!mFlyPath || mFlyPath.length == 0)
{
mFlyPath[0] = [
{longitude:116.538799, dimension:39.9948, height:0, time:0},
{longitude:116.130034, dimension:38.291387, height:5000, time:120},
{longitude:116.415192, dimension:34.841955, height:5000, time:240},
{longitude:117.261468, dimension:31.831171, height:5000, time:360},
{longitude:115.881671, dimension:28.70164, height:5000, time:480},
{longitude:116.120835, dimension:24.308311, height:5000, time:600},
{longitude:113.269254, dimension:23.13956, height:0, time:720}];
//设置初始位置
mViewer.camera.flyTo({
destination : Cesium.Cartesian3.fromDegrees(mFlyPath[0][0].longitude , mFlyPath[0][0].dimension , 100000),
orientation: {
heading : Cesium.Math.toRadians(20.0), // 方向
pitch : Cesium.Math.toRadians(-90.0),// 倾斜角度
roll : 0
},
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。
maximumHeight:5000, // 相机最大飞行高度
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
});
}
// 起始时间
let start = new Cesium.JulianDate();
// 结束时间
let stop = Cesium.JulianDate.addSeconds(start, (mFlyPath[0].length-1)*120,new Cesium.JulianDate());
// 设置始时钟始时间
mViewer.clock.startTime = start.clone();
// 设置时钟当前时间
mViewer.clock.currentTime = start.clone();
// 设置始终停止时间
mViewer.clock.stopTime = stop.clone();
// 时间速率，数字越大时间过的越快
mViewer.clock.multiplier = mFlySpeed;
// 循环执行
mViewer.clock.clockRange = Cesium.ClockRange.LOOP_STOP;
let data = mFlyPath;
for(let j=0; j<data.length; j++)
{
let property = new Cesium.SampledPositionProperty();
for(let i=0; i<data[j].length; i++){
let time = Cesium.JulianDate.addSeconds(start, data[j][i].time, new Cesium.JulianDate());
let position = Cesium.Cartesian3.fromDegrees(data[j][i].longitude, data[j][i].dimension, data[j][i].height);
// 添加位置，和时间对应
property.addSample(time, position);
}
// 添加模型
mViewer.entities.add({
id: "fly",
// 和时间轴关联
availability : new Cesium.TimeIntervalCollection([new Cesium.TimeInterval({
start : start,
stop : stop
})]),
position: property,
//基于位置移动自动计算方向.
orientation: new Cesium.VelocityOrientationProperty(property),
// 模型数据,跨域，模型文件必须放本地
model: {
uri: '../assets/cesium/air_plan.gltf',
scale: 6,
minimumPixelSize: 64
},
//路径
path : {
resolution : 1,
//设置航线样式，线条颜色，内发光粗细，航线宽度等
material : new Cesium.PolylineGlowMaterialProperty({
glowPower : 0.1,
color : Cesium.Color.YELLOW
}),
width : 30
}
});
}
}
/**
* 开始飞行
**/
function startFly()
{
mViewer.clock.shouldAnimate = true;
}
/**
* 暂停飞行
**/
function pauseFly()
{
mViewer.clock.shouldAnimate = false;
}
/**
* 顶部视图
**/
function topView()
{
mViewer.trackedEntity = undefined;
mViewer.zoomTo(mViewer.entities, new Cesium.HeadingPitchRange(0, Cesium.Math.toRadians(-90)));
}
/**
* 侧面视图
**/
function sideView()
{
mViewer.trackedEntity = undefined;
mViewer.zoomTo(mViewer.entities, new Cesium.HeadingPitchRange(Cesium.Math.toRadians(-90), Cesium.Math.toRadians(-15), 7500));
}
/**
* 跟随视图
**/
function aircraftView()
{
mViewer.trackedEntity = mViewer.entities.getById("fly");
}
/**
* 向后飞行
**/
function flyBack()
{
mFlySpeed = -10;
mViewer.clock.multiplier = mFlySpeed;
}
/**
* 向前飞行
**/
function flyForward()
{
mFlySpeed = 10;
mViewer.clock.multiplier = mFlySpeed;
}
/**
* 自定义路线飞行
**/
function customFly()
{
window.PolyLinePrimitive = (function(){
function _(positions)
{
this.options = {
polyline : {
show : true,
positions : [],
material : Cesium.Color.CORNFLOWERBLUE,
width : 5
}
};
this.positions = positions;
this._init();
}
_.prototype._init = function(){
var _self = this;
var _update = function(){
return _self.positions;
};
//实时更新polyline.positions
this.options.polyline.positions = new Cesium.CallbackProperty(_update,false);
mViewer.entities.add(this.options);
};
return _;
})();
var handler = new Cesium.ScreenSpaceEventHandler(mViewer.canvas);
var positions = [];
var poly = undefined;
var lnglatPositions=[];
handler.setInputAction(function(movement)
{
//屏幕坐标转成经纬度坐标
var cartesian = mViewer.scene.camera.pickEllipsoid(movement.position,mViewer.scene.globe.ellipsoid);
if(positions.length == 0)
{
positions.push(cartesian.clone());
}
positions.push(cartesian);
var ray = mViewer.camera.getPickRay(movement.position);;
cartesian= mViewer.scene.globe.pick(ray, mViewer.scene);
if (!cartesian)
return;
let cartographic = Cesium.Cartographic.fromCartesian(cartesian);
let lng = Cesium.Math.toDegrees(cartographic.longitude);//经度值
let lat = Cesium.Math.toDegrees(cartographic.latitude);//纬度值
lnglatPositions.push({longitude:lng, dimension:lat, height:5000, time:lnglatPositions.length*120});
},Cesium.ScreenSpaceEventType.LEFT_CLICK);
//鼠标移动事件
handler.setInputAction(function(movement){
var cartesian = mViewer.camera.pickEllipsoid(movement.endPosition,mViewer.scene.globe.ellipsoid);
if(positions.length >= 2)
{
if (!Cesium.defined(poly)) {
poly = new PolyLinePrimitive(positions);
}else{
positions.pop();
cartesian.y += (1 + Math.random());
positions.push(cartesian);
}
}
},Cesium.ScreenSpaceEventType.MOUSE_MOVE);
//双击完成绘制飞行路线操作
handler.setInputAction(function(movement)
{
handler.destroy();
if(positions.length>0)
{
positions[0].height = 0;
positions[positions.length-1].height =0;
//先停止之前的飞行，初始化飞行数据，开始飞行
stopFly(false);
if(lnglatPositions.length>2)
{
lnglatPositions.splice(lnglatPositions.length-1,1);
mFlyPath[0] = lnglatPositions;
initFly();
startFly();
}
}
},Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK);
}
/**
* 停止飞行
**/
function stopFly(clearData)
{
mViewer.trackedEntity = undefined;
var start = Cesium.JulianDate.fromDate(new Date());
mViewer.clock.startTime = start.clone();
var stop = Cesium.JulianDate.addSeconds(start, 300000000, new Cesium.JulianDate());
mViewer.clock.stopTime = stop.clone();
mViewer.entities.removeAll();
if(clearData)
mFlyPath = [];
}
/**
* 键盘控制飞行
**/
function flyByKeyword()
{
mViewer.entities.removeAll();
mViewer.scene.primitives.removeAll();
let display = document.getElementsByClassName("flyByKeywordContainer")[0].style.display;
if(display == 'block')
document.getElementsByClassName("flyByKeywordContainer")[0].style.display="none";
else
document.getElementsByClassName("flyByKeywordContainer")[0].style.display="block";
var canvas = mViewer.canvas;
canvas.setAttribute('tabindex', '0'); // needed to put focus on the canvas
canvas.addEventListener('click', function() {
canvas.focus();
});
canvas.focus();
var scene = mViewer.scene;
var pathPosition = new Cesium.SampledPositionProperty();
var entityPath = mViewer.entities.add({
position : pathPosition,
name : 'path',
path : {
show : true,
leadTime : 0,
trailTime : 60,
width : 10,
resolution : 1,
material : new Cesium.PolylineGlowMaterialProperty({
glowPower : 0.3,
taperPower : 0.3,
color : Cesium.Color.PALEGOLDENROD
})
}
});
var camera = mViewer.camera;
var controller = scene.screenSpaceCameraController;
var r = 0;
var center = new Cesium.Cartesian3();
var hpRoll = new Cesium.HeadingPitchRoll();
var hpRange = new Cesium.HeadingPitchRange();
var speed = 10;
var deltaRadians = Cesium.Math.toRadians(3.0);
var position = Cesium.Cartesian3.fromDegrees(116.0744619, 39.0503706, 5000.0);
var speedVector = new Cesium.Cartesian3();
var fixedFrameTransform = Cesium.Transforms.localFrameToFixedFrameGenerator('north', 'west');
var planePrimitive = scene.primitives.add(Cesium.Model.fromGltf({
url : '../assets/cesium/Cesium_Air.glb',
modelMatrix : Cesium.Transforms.headingPitchRollToFixedFrame(position, hpRoll, Cesium.Ellipsoid.WGS84, fixedFrameTransform),
minimumPixelSize : 128
}));
planePrimitive.readyPromise.then(function(model) {
// Play and loop all animations at half-speed
model.activeAnimations.addAll({
multiplier : 0.5,
loop : Cesium.ModelAnimationLoop.REPEAT
});
// Zoom to model
r = 2.0 * Math.max(model.boundingSphere.radius, camera.frustum.near);
controller.minimumZoomDistance = r * 0.5;
Cesium.Matrix4.multiplyByPoint(model.modelMatrix, model.boundingSphere.center, center);
var heading = Cesium.Math.toRadians(230.0);
var pitch = Cesium.Math.toRadians(-20.0);
hpRange.heading = heading;
hpRange.pitch = pitch;
hpRange.range = r * 50.0;
camera.lookAt(center, hpRange);
});
document.addEventListener('keydown', function(e) {
switch (e.keyCode) {
case 40:
if (e.shiftKey) {
// speed down
speed = Math.max(--speed, 1);
} else {
// pitch down
hpRoll.pitch -= deltaRadians;
if (hpRoll.pitch < -Cesium.Math.TWO_PI) {
hpRoll.pitch += Cesium.Math.TWO_PI;
}
}
break;
case 38:
if (e.shiftKey) {
// speed up
speed = Math.min(++speed, 100);
} else {
// pitch up
hpRoll.pitch += deltaRadians;
if (hpRoll.pitch > Cesium.Math.TWO_PI) {
hpRoll.pitch -= Cesium.Math.TWO_PI;
}
}
break;
case 39:
if (e.shiftKey) {
// roll right
hpRoll.roll += deltaRadians;
if (hpRoll.roll > Cesium.Math.TWO_PI) {
hpRoll.roll -= Cesium.Math.TWO_PI;
}
} else {
// turn right
hpRoll.heading += deltaRadians;
if (hpRoll.heading > Cesium.Math.TWO_PI) {
hpRoll.heading -= Cesium.Math.TWO_PI;
}
}
break;
case 37:
if (e.shiftKey) {
// roll left until
hpRoll.roll -= deltaRadians;
if (hpRoll.roll < 0.0) {
hpRoll.roll += Cesium.Math.TWO_PI;
}
} else {
// turn left
hpRoll.heading -= deltaRadians;
if (hpRoll.heading < 0.0) {
hpRoll.heading += Cesium.Math.TWO_PI;
}
}
break;
default:
}
});
var headingSpan = document.getElementById('heading');
var pitchSpan = document.getElementById('pitch');
var rollSpan = document.getElementById('roll');
var speedSpan = document.getElementById('speed');
var fromBehind = document.getElementById('fromBehind');
mViewer.scene.preUpdate.addEventListener(function(scene, time) {
speedVector = Cesium.Cartesian3.multiplyByScalar(Cesium.Cartesian3.UNIT_X, speed / 10, speedVector);
position = Cesium.Matrix4.multiplyByPoint(planePrimitive.modelMatrix, speedVector, position);
pathPosition.addSample(Cesium.JulianDate.now(), position);
Cesium.Transforms.headingPitchRollToFixedFrame(position, hpRoll, Cesium.Ellipsoid.WGS84, fixedFrameTransform, planePrimitive.modelMatrix);
if (fromBehind.checked) {
// Zoom to model
Cesium.Matrix4.multiplyByPoint(planePrimitive.modelMatrix, planePrimitive.boundingSphere.center, center);
hpRange.heading = hpRoll.heading;
hpRange.pitch = hpRoll.pitch;
camera.lookAt(center, hpRange);
}
});
mViewer.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>