jtBaseApp/node_modules/cesium/Source/Scene/TileSelectionResult.js

/**
 * Indicates what happened the last time this tile was visited for selection.
 * @private
 */
const TileSelectionResult = {
  /**
   * There was no selection result, perhaps because the tile wasn't visited
   * last frame.
   */
  NONE: 0,

  /**
   * This tile was deemed not visible and culled.
   */
  CULLED: 1,

  /**
   * The tile was selected for rendering.
   */
  RENDERED: 2,

  /**
   * This tile did not meet the required screen-space error and was refined.
   */
  REFINED: 3,

  /**
   * This tile was originally rendered, but it got kicked out of the render list
   * in favor of an ancestor because it is not yet renderable.
   */
  RENDERED_AND_KICKED: 2 | 4,

  /**
   * This tile was originally refined, but its rendered descendants got kicked out of the
   * render list in favor of an ancestor because it is not yet renderable.
   */
  REFINED_AND_KICKED: 3 | 4,

  /**
   * This tile was culled because it was not visible, but it still needs to be loaded
   * and any heights on it need to be updated because the camera's position or the
   * camera's reference frame's origin falls inside this tile. Loading this tile
   * could affect the position of the camera if the camera is currently below
   * terrain or if it is tracking an object whose height is referenced to terrain.
   * And a change in the camera position may, in turn, affect what is culled.
   */
  CULLED_BUT_NEEDED: 1 | 8,

  /**
   * Determines if a selection result indicates that this tile or its descendants were
   * kicked from the render list. In other words, if it is <code>RENDERED_AND_KICKED</code>
   * or <code>REFINED_AND_KICKED</code>.
   *
   * @param {TileSelectionResult} value The selection result to test.
   * @returns {Boolean} true if the tile was kicked, no matter if it was originally rendered or refined.
   */
  wasKicked: function (value) {
    return value >= TileSelectionResult.RENDERED_AND_KICKED;
  },

  /**
   * Determines the original selection result prior to being kicked or CULLED_BUT_NEEDED.
   * If the tile wasn't kicked or CULLED_BUT_NEEDED, the original value is returned.
   * @param {TileSelectionResult} value The selection result.
   * @returns {TileSelectionResult} The original selection result prior to kicking.
   */
  originalResult: function (value) {
    return value & 3;
  },

  /**
   * Converts this selection result to a kick.
   * @param {TileSelectionResult} value The original selection result.
   * @returns {TileSelectionResult} The kicked form of the selection result.
   */
  kick: function (value) {
    return value | 4;
  },
};
export default TileSelectionResult;