Add existing to tracked

node_modules/@cesium/engine/Source/DataSources/Cesium3DTilesetGraphics.js

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+import Frozen from "../Core/Frozen.js";
+import defined from "../Core/defined.js";
+import DeveloperError from "../Core/DeveloperError.js";
+import Event from "../Core/Event.js";
+import createPropertyDescriptor from "./createPropertyDescriptor.js";
+
+/**
+ * @typedef {object} Cesium3DTilesetGraphics.ConstructorOptions
+ *
+ * Initialization options for the Cesium3DTilesetGraphics constructor
+ *
+ * @property {Property | boolean} [show=true] A boolean Property specifying the visibility of the tileset.
+ * @property {Property | string | Resource} [uri] A string or Resource Property specifying the URI of the tileset.
+ * @property {Property | number} [maximumScreenSpaceError] A number or Property specifying the maximum screen space error used to drive level of detail refinement.
+ */
+
+/**
+ * A 3D Tiles tileset represented by an {@link Entity}.
+ * The tileset modelMatrix is determined by the containing Entity position and orientation
+ * or is left unset if position is undefined.
+ *
+ * @alias Cesium3DTilesetGraphics
+ * @constructor
+ *
+ * @param {Cesium3DTilesetGraphics.ConstructorOptions} [options] Object describing initialization options
+ */
+function Cesium3DTilesetGraphics(options) {
+  this._definitionChanged = new Event();
+  this._show = undefined;
+  this._showSubscription = undefined;
+  this._uri = undefined;
+  this._uriSubscription = undefined;
+  this._maximumScreenSpaceError = undefined;
+  this._maximumScreenSpaceErrorSubscription = undefined;
+
+  this.merge(options ?? Frozen.EMPTY_OBJECT);
+}
+
+Object.defineProperties(Cesium3DTilesetGraphics.prototype, {
+  /**
+   * Gets the event that is raised whenever a property or sub-property is changed or modified.
+   * @memberof Cesium3DTilesetGraphics.prototype
+   * @type {Event}
+   * @readonly
+   */
+  definitionChanged: {
+    get: function () {
+      return this._definitionChanged;
+    },
+  },
+
+  /**
+   * Gets or sets the boolean Property specifying the visibility of the model.
+   * @memberof Cesium3DTilesetGraphics.prototype
+   * @type {Property|undefined}
+   * @default true
+   */
+  show: createPropertyDescriptor("show"),
+
+  /**
+   * Gets or sets the string Property specifying the URI of the glTF asset.
+   * @memberof Cesium3DTilesetGraphics.prototype
+   * @type {Property|undefined}
+   */
+  uri: createPropertyDescriptor("uri"),
+
+  /**
+   * Gets or sets the maximum screen space error used to drive level of detail refinement.
+   * @memberof Cesium3DTilesetGraphics.prototype
+   * @type {Property|undefined}
+   */
+  maximumScreenSpaceError: createPropertyDescriptor("maximumScreenSpaceError"),
+});
+
+/**
+ * Duplicates this instance.
+ *
+ * @param {Cesium3DTilesetGraphics} [result] The object onto which to store the result.
+ * @returns {Cesium3DTilesetGraphics} The modified result parameter or a new instance if one was not provided.
+ */
+Cesium3DTilesetGraphics.prototype.clone = function (result) {
+  if (!defined(result)) {
+    return new Cesium3DTilesetGraphics(this);
+  }
+  result.show = this.show;
+  result.uri = this.uri;
+  result.maximumScreenSpaceError = this.maximumScreenSpaceError;
+
+  return result;
+};
+
+/**
+ * Assigns each unassigned property on this object to the value
+ * of the same property on the provided source object.
+ *
+ * @param {Cesium3DTilesetGraphics} source The object to be merged into this object.
+ */
+Cesium3DTilesetGraphics.prototype.merge = function (source) {
+  //>>includeStart('debug', pragmas.debug);
+  if (!defined(source)) {
+    throw new DeveloperError("source is required.");
+  }
+  //>>includeEnd('debug');
+
+  this.show = this.show ?? source.show;
+  this.uri = this.uri ?? source.uri;
+  this.maximumScreenSpaceError =
+    this.maximumScreenSpaceError ?? source.maximumScreenSpaceError;
+};
+
+export default Cesium3DTilesetGraphics;