怎么把osgb模式的倾斜摄影模型,通过网页的形式进行发布和展示,请给出实现的技术和具体代码
时间: 2024-02-25 19:59:06 浏览: 22
要将OSGB模式的倾斜摄影模型通过网页进行发布和展示,可以采用CesiumJS这一开源的JavaScript库。具体实现步骤如下:
1. 将OSGB模式的倾斜摄影模型转换为3D Tiles格式。可以使用FME软件等数据转换工具进行转换。
2. 在网页中引入CesiumJS库,创建一个地球容器,并设置初始视角。
```html
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://cesium.com/downloads/cesiumjs/releases/1.84/Build/Cesium/Widgets/widgets.css" />
<script src="https://cesium.com/downloads/cesiumjs/releases/1.84/Build/Cesium/Cesium.js"></script>
<style>
#cesiumContainer {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
overflow: hidden;
position: absolute;
}
html,
body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
overflow: hidden;
}
</style>
</head>
<body>
<div id="cesiumContainer"></div>
<script>
const viewer = new Cesium.Viewer("cesiumContainer", {
imageryProvider: false,
baseLayerPicker: false,
geocoder: false,
homeButton: false,
sceneModePicker: false,
fullscreenButton: false,
navigationHelpButton: false,
timeline: false,
animation: false,
shouldAnimate: true,
shadows: true,
terrainProvider: Cesium.createWorldTerrain(),
skyAtmosphere: true,
skyBox: false,
scene3DOnly: true,
automaticallyTrackDataSourceClocks: false,
dataSources: new Cesium.CustomDataSource("myDataSource"),
requestRenderMode: true,
maximumRenderTimeChange: 0.1,
targetFrameRate: 60,
clockViewModel: new Cesium.ClockViewModel(
new Cesium.Clock({
startTime: Cesium.JulianDate.fromIso8601("2021-01-01"),
currentTime: Cesium.JulianDate.fromIso8601("2021-01-01"),
stopTime: Cesium.JulianDate.fromIso8601("2022-01-01"),
clockRange: Cesium.ClockRange.LOOP_STOP,
clockStep: Cesium.ClockStep.SYSTEM_CLOCK_MULTIPLIER,
multiplier: 60 * 60 * 24 * 7,
})
),
});
viewer.camera.setView({
destination: Cesium.Cartesian3.fromDegrees(
116.391,
39.904,
50000
),
orientation: {
heading: Cesium.Math.toRadians(0),
pitch: Cesium.Math.toRadians(-90),
roll: Cesium.Math.toRadians(0),
},
});
</script>
</body>
</html>
```
3. 加载3D Tiles数据,并将其添加到场景中。
```javascript
const tileset = new Cesium.Cesium3DTileset({
url: "path/to/3dtiles",
});
tileset.readyPromise.then((tileset) => {
viewer.scene.primitives.add(tileset);
viewer.zoomTo(tileset);
});
```
4. 在地球上添加标记点或者绘制多边形等交互操作。
```javascript
const dataSource = viewer.dataSources.getByName("myDataSource")[0];
const point = dataSource.entities.add({
position: Cesium.Cartesian3.fromDegrees(116.391, 39.904),
point: {
pixelSize: 10,
color: Cesium.Color.RED,
},
});
const polygon = dataSource.entities.add({
polygon: {
hierarchy: Cesium.Cartesian3.fromDegreesArray([
116.391,
39.904,
116.391,
39.9045,
116.3915,
39.9045,
116.3915,
39.904,
]),
material: Cesium.Color.GREEN.withAlpha(0.5),
outline: true,
outlineColor: Cesium.Color.BLACK,
outlineWidth: 2,
},
});
viewer.zoomTo(dataSource);
```
可以根据实际需求进行修改和扩展。