Add existing to tracked

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

@@ -0,0 +1,51 @@
+import Frozen from "../Core/Frozen.js";
+
+/**
+ * Represents a burst of {@link Particle}s from a {@link ParticleSystem} at a given time in the systems lifetime.
+ *
+ * @alias ParticleBurst
+ * @constructor
+ *
+ * @param {object} [options] An object with the following properties:
+ * @param {number} [options.time=0.0] The time in seconds after the beginning of the particle system's lifetime that the burst will occur.
+ * @param {number} [options.minimum=0.0] The minimum number of particles emmitted in the burst.
+ * @param {number} [options.maximum=50.0] The maximum number of particles emitted in the burst.
+ */
+function ParticleBurst(options) {
+  options = options ?? Frozen.EMPTY_OBJECT;
+
+  /**
+   * The time in seconds after the beginning of the particle system's lifetime that the burst will occur.
+   * @type {number}
+   * @default 0.0
+   */
+  this.time = options.time ?? 0.0;
+  /**
+   * The minimum number of particles emitted.
+   * @type {number}
+   * @default 0.0
+   */
+  this.minimum = options.minimum ?? 0.0;
+  /**
+   * The maximum number of particles emitted.
+   * @type {number}
+   * @default 50.0
+   */
+  this.maximum = options.maximum ?? 50.0;
+
+  this._complete = false;
+}
+
+Object.defineProperties(ParticleBurst.prototype, {
+  /**
+   * <code>true</code> if the burst has been completed; <code>false</code> otherwise.
+   * @memberof ParticleBurst.prototype
+   * @type {boolean}
+   */
+  complete: {
+    get: function () {
+      return this._complete;
+    },
+  },
+});
+export default ParticleBurst;