Cesium Note18:添加多边形

矩形

const addMatrix = () => {
  if (state.isAddLayer == "isClose") {
    console.log(state.isAddLayer);
    state.isAddLayer = "isOpen"
    proxy.wyoming = proxy.viewer.entities.add({  //添加一个实体，仅需要传递一个简单JSON对象，返回值是一个Entity对象
      name: 'Wyoming',
      polygon: {
        hierarchy: Cesium.Cartesian3.fromDegreesArray([//一组地理坐标
          -109.080842, 45.002073,
          -105.91517, 45.002073,
          -104.058488, 44.996596,
          -104.053011, 43.002989,
          -104.053011, 41.003906,
          -105.728954, 40.998429,
          -107.919731, 41.003906,
          -109.04798, 40.998429,
          -111.047063, 40.998429,
          -111.047063, 42.000709,
          -111.047063, 44.476286,
          -111.05254, 45.002073]),
        material: Cesium.Color.RED.withAlpha(0.5), //材质
        outline: true, //是否显示轮廓
        outlineColor: Cesium.Color.BLACK //轮廓的颜色
      }
    });
    proxy.viewer.zoomTo(proxy.wyoming);//缩放、平移视图使实体可见 
  } else {
    console.log(state.isAddLayer);
    state.isAddLayer = "isClose";
    proxy.viewer.entities.remove(proxy.wyoming);
  }