Method update

packages/engine/Source/DataSources/KmlDataSource.js:3844–3972

* Updates any NetworkLink that require updating. * * @param {JulianDate} time The simulation time. * @returns {boolean} True if this data source is ready to be displayed at the provided time, false otherwise.

(time)

   * @returns {boolean} True if this data source is ready to be displayed at the provided time, false otherwise.
   */
  update(time) {
    const networkLinks = this._networkLinks;
    if (networkLinks.length === 0) {
      return true;
    }

    const now = JulianDate.now();
    const that = this;

    entitiesToIgnore.removeAll();

    function recurseIgnoreEntities(entity) {
      const children = entity._children;
      const count = children.length;
      for (let i = 0; i < count; ++i) {
        const child = children[i];
        entitiesToIgnore.set(child.id, child);
        recurseIgnoreEntities(child);
      }
    }

    let cameraViewUpdate = false;
    const lastCameraView = this._lastCameraView;
    const camera = this.camera;
    if (
      defined(camera) &&
      !(
        camera.positionWC.equalsEpsilon(
          lastCameraView.position,
          CesiumMath.EPSILON7,
        ) &&
        camera.directionWC.equalsEpsilon(
          lastCameraView.direction,
          CesiumMath.EPSILON7,
        ) &&
        camera.upWC.equalsEpsilon(lastCameraView.up, CesiumMath.EPSILON7)
      )
    ) {
      // Camera has changed so update the last view
      lastCameraView.position = Cartesian3.clone(camera.positionWC);
      lastCameraView.direction = Cartesian3.clone(camera.directionWC);
      lastCameraView.up = Cartesian3.clone(camera.upWC);
      lastCameraView.bbox = camera.computeViewRectangle();
      cameraViewUpdate = true;
    }

    const newNetworkLinks = new AssociativeArray();
    let changed = false;
    networkLinks.values.forEach(function (networkLink) {
      const entity = networkLink.entity;
      if (entitiesToIgnore.contains(entity.id)) {
        return;
      }

      if (!networkLink.updating) {
        let doUpdate = false;
        if (networkLink.refreshMode === RefreshMode.INTERVAL) {
          if (