Add existing to tracked

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

@@ -0,0 +1,155 @@
+import defined from "../Core/defined.js";
+import DeveloperError from "../Core/DeveloperError.js";
+import Event from "../Core/Event.js";
+import JulianDate from "../Core/JulianDate.js";
+import ReferenceFrame from "../Core/ReferenceFrame.js";
+import TimeIntervalCollection from "../Core/TimeIntervalCollection.js";
+import PositionProperty from "./PositionProperty.js";
+import Property from "./Property.js";
+
+/**
+ * A {@link TimeIntervalCollectionProperty} which is also a {@link PositionProperty}.
+ *
+ * @alias TimeIntervalCollectionPositionProperty
+ * @constructor
+ *
+ * @param {ReferenceFrame} [referenceFrame=ReferenceFrame.FIXED] The reference frame in which the position is defined.
+ */
+function TimeIntervalCollectionPositionProperty(referenceFrame) {
+  this._definitionChanged = new Event();
+  this._intervals = new TimeIntervalCollection();
+  this._intervals.changedEvent.addEventListener(
+    TimeIntervalCollectionPositionProperty.prototype._intervalsChanged,
+    this,
+  );
+  this._referenceFrame = referenceFrame ?? ReferenceFrame.FIXED;
+}
+
+Object.defineProperties(TimeIntervalCollectionPositionProperty.prototype, {
+  /**
+   * Gets a value indicating if this property is constant.  A property is considered
+   * constant if getValue always returns the same result for the current definition.
+   * @memberof TimeIntervalCollectionPositionProperty.prototype
+   *
+   * @type {boolean}
+   * @readonly
+   */
+  isConstant: {
+    get: function () {
+      return this._intervals.isEmpty;
+    },
+  },
+  /**
+   * Gets the event that is raised whenever the definition of this property changes.
+   * The definition is considered to have changed if a call to getValue would return
+   * a different result for the same time.
+   * @memberof TimeIntervalCollectionPositionProperty.prototype
+   *
+   * @type {Event}
+   * @readonly
+   */
+  definitionChanged: {
+    get: function () {
+      return this._definitionChanged;
+    },
+  },
+  /**
+   * Gets the interval collection.
+   * @memberof TimeIntervalCollectionPositionProperty.prototype
+   * @type {TimeIntervalCollection}
+   * @readonly
+   */
+  intervals: {
+    get: function () {
+      return this._intervals;
+    },
+  },
+  /**
+   * Gets the reference frame in which the position is defined.
+   * @memberof TimeIntervalCollectionPositionProperty.prototype
+   * @type {ReferenceFrame}
+   * @readonly
+   * @default ReferenceFrame.FIXED;
+   */
+  referenceFrame: {
+    get: function () {
+      return this._referenceFrame;
+    },
+  },
+});
+
+const timeScratch = new JulianDate();
+
+/**
+ * Gets the value of the property at the provided time in the fixed frame.
+ *
+ * @param {JulianDate} [time=JulianDate.now()] The time for which to retrieve the value. If omitted, the current system time is used.
+ * @param {object} [result] The object to store the value into, if omitted, a new instance is created and returned.
+ * @returns {Cartesian3 | undefined} The modified result parameter or a new instance if the result parameter was not supplied.
+ */
+TimeIntervalCollectionPositionProperty.prototype.getValue = function (
+  time,
+  result,
+) {
+  if (!defined(time)) {
+    time = JulianDate.now(timeScratch);
+  }
+  return this.getValueInReferenceFrame(time, ReferenceFrame.FIXED, result);
+};
+
+/**
+ * Gets the value of the property at the provided time and in the provided reference frame.
+ *
+ * @param {JulianDate} time The time for which to retrieve the value.
+ * @param {ReferenceFrame} referenceFrame The desired referenceFrame of the result.
+ * @param {Cartesian3} [result] The object to store the value into, if omitted, a new instance is created and returned.
+ * @returns {Cartesian3 | undefined} The modified result parameter or a new instance if the result parameter was not supplied.
+ */
+TimeIntervalCollectionPositionProperty.prototype.getValueInReferenceFrame =
+  function (time, referenceFrame, result) {
+    //>>includeStart('debug', pragmas.debug);
+    if (!defined(time)) {
+      throw new DeveloperError("time is required.");
+    }
+    if (!defined(referenceFrame)) {
+      throw new DeveloperError("referenceFrame is required.");
+    }
+    //>>includeEnd('debug');
+
+    const position = this._intervals.findDataForIntervalContainingDate(time);
+    if (defined(position)) {
+      return PositionProperty.convertToReferenceFrame(
+        time,
+        position,
+        this._referenceFrame,
+        referenceFrame,
+        result,
+      );
+    }
+    return undefined;
+  };
+
+/**
+ * Compares this property to the provided property and returns
+ * <code>true</code> if they are equal, <code>false</code> otherwise.
+ *
+ * @param {Property} [other] The other property.
+ * @returns {boolean} <code>true</code> if left and right are equal, <code>false</code> otherwise.
+ */
+TimeIntervalCollectionPositionProperty.prototype.equals = function (other) {
+  return (
+    this === other || //
+    (other instanceof TimeIntervalCollectionPositionProperty && //
+      this._intervals.equals(other._intervals, Property.equals) && //
+      this._referenceFrame === other._referenceFrame)
+  );
+};
+
+/**
+ * @private
+ */
+TimeIntervalCollectionPositionProperty.prototype._intervalsChanged =
+  function () {
+    this._definitionChanged.raiseEvent(this);
+  };
+export default TimeIntervalCollectionPositionProperty;