<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta
name="viewport"
content="initial-scale=1,maximum-scale=1,user-scalable=no"
/>
<link
href="http://ua.bigemap.com:30081/bmsdk/bigemap-gl.js/v1.1.0/Widgets/widgets.css"
rel="stylesheet"
/>
<script src="http://ua.bigemap.com:30081/bmsdk/bigemap-gl.js/v1.1.0/bigemap-gl.js"></script>
<style>
body {
margin: 0;
padding: 0;
}
#container {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
#toolbar {
position: absolute;
top: 15px;
left: 20px;
z-index: 99;
width: 150px;
}
#toolbar select {
display: inline-block;
position: relative;
background: #303336;
border: 1px solid #444;
color: #edffff;
fill: #edffff;
border-radius: 4px;
padding: 5px 12px;
margin: 2px 3px;
cursor: pointer;
overflow: hidden;
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
user-select: none;
}
#toolDiv {
left: 10px;
top: 10px;
margin-bottom: 10px;
}
.bmgl-widget-credits {
display: none;
}
</style>
<title>part_test</title>
</head>
<body>
<div id="container"></div>
<script>
bmgl.Config.HTTP_URL = 'http://ua.bigemap.com:30081/bmsdk/';
var viewer = new bmgl.Viewer("container", {
mapId: "bigemap.dc-satellite",
timeline: true,
animation: true,
});
var entity = undefined;
viewer.scene.globe.enableLighting = true;
viewer.scene.globe.depthTestAgainstTerrain = true;
//運動的開始時間
var start = bmgl.JulianDate.fromDate(new Date());
//運動的結束時間
var stop = bmgl.JulianDate.addSeconds(
start,
3600 * 24,
new bmgl.JulianDate()
);
//設置時間線的開始和結束時間
viewer.clock.startTime = start.clone();
viewer.clock.stopTime = stop.clone();
viewer.clock.currentTime = start.clone();
viewer.clock.clockRange = bmgl.ClockRange.LOOP_STOP;
// 設置時鐘的速率
viewer.clock.multiplier = 0.6;
viewer.timeline.zoomTo(start, stop);
var i = 0;
function computeCirclularFlight(lon, lat, radius) {
var property = new bmgl.SampledPositionProperty();
// 獲取實時的經緯度位置
var times = setInterval(() => {
i += 2.0;
var radians = bmgl.Math.toRadians(i);
var time = bmgl.JulianDate.addSeconds(
start,
i,
new bmgl.JulianDate()
);
var position = bmgl.Cartesian3.fromDegrees(
lon + radius * 1.5 * Math.cos(radians),
lat + radius * Math.sin(radians),
8750
);
property.addSample(time, position);
if (i >= 360) clearInterval(times);
// console.log("a");
}, 2000);
// console.log("b");
return property;
}
//添加模型運動位置
var position = computeCirclularFlight(86.93047, 27.986914, 0.03);
//創建的一個實體
entity = viewer.entities.add({
//模型運動起止時間
availability: new bmgl.TimeIntervalCollection([
new bmgl.TimeInterval({
start: start,
stop: stop,
}),
]),
//模型的位置
position: position,
//自動根據模型的位置計算模型的朝向.
orientation: new bmgl.VelocityOrientationProperty(position),
//加載模型的參數
model: {
uri: "/SampleData/models/CesiumAir/Cesium_Air.glb",
minimumPixelSize: 64,
scale: 0.08,
},
//展示模型的運動軌跡
path: {
resolution: 1,
material: new bmgl.PolylineGlowMaterialProperty({
glowPower: 0.1,
color: bmgl.Color.YELLOW
}),
width: 10
}
});
viewer.clock.shouldAnimate = true;
viewer.trackedEntity = entity;
</script>
</body>
</html>