05-Cesium实体跟随鼠标移动

let label = this.viewer.entities.add({
        id: "myEntity",
        position: Cesium.Cartesian3.fromDegrees(107.0, 40.0, 300.0),
        label: {
          text: '13213132',
          pixelOffset: new Cesium.Cartesian2(100, 0),
          showBackground: true,
          backgroundColor: Cesium.Color(0, 0, 0, .5)
        },
        point: {
          color: Cesium.Color.RED,
          pixelSize: 50
        }
      })

      this.viewer.zoomTo(label)
      var handler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas);
      handler.setInputAction(function (movement) {
        const position = movement.endPosition;// arg有startPosition与endPosition两个属性，即移动前后的位置信息：Cartesian2对象
        const cartesian = viewer.scene.globe.pick(viewer.camera.getPickRay(position), viewer.scene);//将Cartesian2转为Cartesian3
        viewer.entities.getById("myEntity").position = cartesian;
      }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);

根据这个案例，可以做出拖动实体。