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Editor to share with you how Cesium loads stereo lines in batches. I hope you will get something after reading this article. Let's discuss it together.

In the sample program of Cesium's official website, how to draw a line into a three-dimensional shape, the detailed address is: https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/index.html?src=Corridor.html&label=Geometries

In the sample program of Cesium's official website, how to load the data of geojson. The detailed address is: https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/index.html?src=GeoJSON%20and%20TopoJSON.html&label=DataSources.

So, how to bulk load the geojson data into a three-dimensional linear mode, the following is a detailed implementation code:

Load the geojson and wait synchronously.

Let promise = Cesium.GeoJsonDataSource.load ('data/guizhouroad1.geojson')

In the wait event, perform the conversion of the line to a solid column

Promise.then (function (dataSource) {

/ / entities loaded by geojson

Let entities = dataSource.entities.values

/ / convert solid columnar lines

Entity.polylineVolume = new Cesium.PolylineVolumeGraphics ({

/ / set the location

Positions: entity.polyline.positions

/ / calculate solid cylindrical coordinates

Shape: computeCircle (300.0)

/ / set color or map

Material: Cesium.Color.RED

});

/ / set the plane to be empty first

Entity.polyline = null

}

/ / add a data source and zoom over

Viewer.dataSources.add (dataSource)

Viewer.zoomTo (viewer.entities)

Console.log (idx)

) .otherwise (function (error) {

Window.alert (error)

});

/ / calculate the solid cylindrical function

Function computeCircle (radius) {

Var positions = []

For (var I = 0; I < 360; I + = 2) {

Var radians = Cesium.Math.toRadians (I)

Positions.push (new Cesium.Cartesian2 (radius * Math.cos (radians), radius * Math.sin (radians)

}

Return positions

}

After reading this article, I believe you have a certain understanding of "how to bulk load stereo lines in Cesium". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

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