Add existing to tracked

node_modules/@cesium/engine/Source/Scene/Empty3DTileContent.js

@@ -0,0 +1,132 @@
+import destroyObject from "../Core/destroyObject.js";
+import DeveloperError from "../Core/DeveloperError.js";
+
+/**
+ * Represents empty content for tiles in a
+ * {@link https://github.com/CesiumGS/3d-tiles/tree/main/specification|3D Tiles} tileset that
+ * do not have content, e.g., because they are used to optimize hierarchical culling.
+ * <p>
+ * Implements the {@link Cesium3DTileContent} interface.
+ * </p>
+ *
+ * @implements Cesium3DTileContent
+ * @private
+ */
+class Empty3DTileContent {
+  constructor(tileset, tile) {
+    this._tileset = tileset;
+    this._tile = tile;
+
+    this.featurePropertiesDirty = false;
+  }
+
+  get featuresLength() {
+    return 0;
+  }
+
+  get pointsLength() {
+    return 0;
+  }
+
+  get trianglesLength() {
+    return 0;
+  }
+
+  get geometryByteLength() {
+    return 0;
+  }
+
+  get texturesByteLength() {
+    return 0;
+  }
+
+  get batchTableByteLength() {
+    return 0;
+  }
+
+  get innerContents() {
+    return undefined;
+  }
+
+  /**
+   * Returns true when the tile's content is ready to render; otherwise false
+   *
+   *
+   * @type {boolean}
+   * @readonly
+   * @private
+   */
+  get ready() {
+    return true;
+  }
+
+  get tileset() {
+    return this._tileset;
+  }
+
+  get tile() {
+    return this._tile;
+  }
+
+  get url() {
+    return undefined;
+  }
+
+  get metadata() {
+    return undefined;
+  }
+
+  set metadata(value) {
+    //>>includeStart('debug', pragmas.debug);
+    throw new DeveloperError("Empty3DTileContent cannot have content metadata");
+    //>>includeEnd('debug');
+  }
+
+  get batchTable() {
+    return undefined;
+  }
+
+  get group() {
+    return undefined;
+  }
+
+  set group(value) {
+    //>>includeStart('debug', pragmas.debug);
+    throw new DeveloperError("Empty3DTileContent cannot have group metadata");
+    //>>includeEnd('debug');
+  }
+
+  /**
+   * Part of the {@link Cesium3DTileContent} interface.  <code>Empty3DTileContent</code>
+   * always returns <code>false</code> since a tile of this type does not have any features.
+   */
+  hasProperty(batchId, name) {
+    return false;
+  }
+
+  /**
+   * Part of the {@link Cesium3DTileContent} interface.  <code>Empty3DTileContent</code>
+   * always returns <code>undefined</code> since a tile of this type does not have any features.
+   */
+  getFeature(batchId) {
+    return undefined;
+  }
+
+  applyDebugSettings(enabled, color) {}
+  applyStyle(style) {}
+  update(tileset, frameState) {}
+
+  pick(ray, frameState, result) {
+    return undefined;
+  }
+
+  isDestroyed() {
+    return false;
+  }
+
+  destroy() {
+    return destroyObject(this);
+  }
+}
+
+export default Empty3DTileContent;