cesium添加環形擴散圓,動態擴散

1 首先實現添加一個圓的邏輯 let entity= viewer.entities.add({ position: Cesium.Cartesian3.fromDegrees(103.0, 40.0), name: 'Red ellipse on surface with outline', ellipse: { semiMinorAxis: 250000.0, se
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