Add existing to tracked

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

@@ -0,0 +1,152 @@
+import Color from "../Core/Color.js";
+import Frozen from "../Core/Frozen.js";
+import defined from "../Core/defined.js";
+import Event from "../Core/Event.js";
+import JulianDate from "../Core/JulianDate.js";
+import createPropertyDescriptor from "./createPropertyDescriptor.js";
+import Property from "./Property.js";
+
+const defaultColor = Color.WHITE;
+const defaultGlowPower = 0.25;
+const defaultTaperPower = 1.0;
+
+/**
+ * A {@link MaterialProperty} that maps to polyline glow {@link Material} uniforms.
+ * @alias PolylineGlowMaterialProperty
+ * @constructor
+ *
+ * @param {object} [options] Object with the following properties:
+ * @param {Property|Color} [options.color=Color.WHITE] A Property specifying the {@link Color} of the line.
+ * @param {Property|number} [options.glowPower=0.25] A numeric Property specifying the strength of the glow, as a percentage of the total line width.
+ * @param {Property|number} [options.taperPower=1.0] A numeric Property specifying the strength of the tapering effect, as a percentage of the total line length.  If 1.0 or higher, no taper effect is used.
+ */
+function PolylineGlowMaterialProperty(options) {
+  options = options ?? Frozen.EMPTY_OBJECT;
+
+  this._definitionChanged = new Event();
+  this._color = undefined;
+  this._colorSubscription = undefined;
+  this._glowPower = undefined;
+  this._glowPowerSubscription = undefined;
+  this._taperPower = undefined;
+  this._taperPowerSubscription = undefined;
+
+  this.color = options.color;
+  this.glowPower = options.glowPower;
+  this.taperPower = options.taperPower;
+}
+
+Object.defineProperties(PolylineGlowMaterialProperty.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 PolylineGlowMaterialProperty.prototype
+   * @type {boolean}
+   * @readonly
+   */
+  isConstant: {
+    get: function () {
+      return (
+        Property.isConstant(this._color) && Property.isConstant(this._glow)
+      );
+    },
+  },
+  /**
+   * 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 PolylineGlowMaterialProperty.prototype
+   * @type {Event}
+   * @readonly
+   */
+  definitionChanged: {
+    get: function () {
+      return this._definitionChanged;
+    },
+  },
+  /**
+   * Gets or sets the Property specifying the {@link Color} of the line.
+   * @memberof PolylineGlowMaterialProperty.prototype
+   * @type {Property|undefined}
+   */
+  color: createPropertyDescriptor("color"),
+
+  /**
+   * Gets or sets the numeric Property specifying the strength of the glow, as a percentage of the total line width (less than 1.0).
+   * @memberof PolylineGlowMaterialProperty.prototype
+   * @type {Property|undefined}
+   */
+  glowPower: createPropertyDescriptor("glowPower"),
+
+  /**
+   * Gets or sets the numeric Property specifying the strength of the tapering effect, as a percentage of the total line length.  If 1.0 or higher, no taper effect is used.
+   * @memberof PolylineGlowMaterialProperty.prototype
+   * @type {Property|undefined}
+   */
+  taperPower: createPropertyDescriptor("taperPower"),
+});
+
+/**
+ * Gets the {@link Material} type at the provided time.
+ *
+ * @param {JulianDate} time The time for which to retrieve the type.
+ * @returns {string} The type of material.
+ */
+PolylineGlowMaterialProperty.prototype.getType = function (time) {
+  return "PolylineGlow";
+};
+
+const timeScratch = new JulianDate();
+
+/**
+ * Gets the value of the property at the provided time.
+ *
+ * @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 {object} The modified result parameter or a new instance if the result parameter was not supplied.
+ */
+PolylineGlowMaterialProperty.prototype.getValue = function (time, result) {
+  if (!defined(time)) {
+    time = JulianDate.now(timeScratch);
+  }
+  if (!defined(result)) {
+    result = {};
+  }
+  result.color = Property.getValueOrClonedDefault(
+    this._color,
+    time,
+    defaultColor,
+    result.color,
+  );
+  result.glowPower = Property.getValueOrDefault(
+    this._glowPower,
+    time,
+    defaultGlowPower,
+    result.glowPower,
+  );
+  result.taperPower = Property.getValueOrDefault(
+    this._taperPower,
+    time,
+    defaultTaperPower,
+    result.taperPower,
+  );
+  return result;
+};
+
+/**
+ * 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.
+ */
+PolylineGlowMaterialProperty.prototype.equals = function (other) {
+  return (
+    this === other ||
+    (other instanceof PolylineGlowMaterialProperty &&
+      Property.equals(this._color, other._color) &&
+      Property.equals(this._glowPower, other._glowPower) &&
+      Property.equals(this._taperPower, other._taperPower))
+  );
+};
+export default PolylineGlowMaterialProperty;