text: import defaultValue from "../Core/defaultValue.js";
  import defined from "../Core/defined.js";
  import DeveloperError from "../Core/DeveloperError.js";
  import Event from "../Core/Event.js";
  import createMaterialPropertyDescriptor from "./createMaterialPropertyDescriptor.js";
  import createPropertyDescriptor from "./createPropertyDescriptor.js";
  
  /**
   * @typedef {Object} PolylineVolumeGraphics.ConstructorOptions
   *
   * Initialization options for the PolylineVolumeGraphics constructor
   *
   * @property {Property | boolean} [show=true] A boolean Property specifying the visibility of the volume.
   * @property {Property | Array<Cartesian3>} [positions] A Property specifying the array of {@link Cartesian3} positions which define the line strip.
   * @property {Property | Array<Cartesian2>} [shape] A Property specifying the array of {@link Cartesian2} positions which define the shape to be extruded.
   * @property {Property | CornerType} [cornerType=CornerType.ROUNDED] A {@link CornerType} Property specifying the style of the corners.
   * @property {Property | number} [granularity=Cesium.Math.RADIANS_PER_DEGREE] A numeric Property specifying the angular distance between each latitude and longitude point.
   * @property {Property | boolean} [fill=true] A boolean Property specifying whether the volume is filled with the provided material.
   * @property {MaterialProperty | Color} [material=Color.WHITE] A Property specifying the material used to fill the volume.
   * @property {Property | boolean} [outline=false] A boolean Property specifying whether the volume is outlined.
   * @property {Property | Color} [outlineColor=Color.BLACK] A Property specifying the {@link Color} of the outline.
   * @property {Property | number} [outlineWidth=1.0] A numeric Property specifying the width of the outline.
   * @property {Property | ShadowMode} [shadows=ShadowMode.DISABLED] An enum Property specifying whether the volume casts or receives shadows from light sources.
   * @property {Property | DistanceDisplayCondition} [distanceDisplayCondition] A Property specifying at what distance from the camera that this volume will be displayed.
   */
  
  /**
   * Describes a polyline volume defined as a line strip and corresponding two dimensional shape which is extruded along it.
   * The resulting volume conforms to the curvature of the globe.
   *
   * @alias PolylineVolumeGraphics
   * @constructor
   *
   * @param {PolylineVolumeGraphics.ConstructorOptions} [options] Object describing initialization options
   *
   * @see Entity
   * @demo {@link https://sandcastle.cesium.com/index.html?src=Polyline%20Volume.html|Cesium Sandcastle Polyline Volume Demo}
   */
  function PolylineVolumeGraphics(options) {
    this._definitionChanged = new Event();
    this._show = undefined;
    this._showSubscription = undefined;
    this._positions = undefined;
    this._positionsSubscription = undefined;
    this._shape = undefined;
    this._shapeSubscription = undefined;
    this._cornerType = undefined;
    this._cornerTypeSubscription = undefined;
    this._granularity = undefined;
    this._granularitySubscription = undefined;
    this._fill = undefined;
    this._fillSubscription = undefined;
    this._material = undefined;
    this._materialSubscription = undefined;
    this._outline = undefined;
    this._outlineSubscription = undefined;
    this._outlineColor = undefined;
    this._outlineColorSubscription = undefined;
    this._outlineWidth = undefined;
    this._outlineWidthSubscription = undefined;
    this._shadows = undefined;
    this._shadowsSubscription = undefined;
    this._distanceDisplayCondition = undefined;
    this._distanceDisplayConditionSubsription = undefined;
  
    this.merge(defaultValue(options, defaultValue.EMPTY_OBJECT));
  }
  
  Object.defineProperties(PolylineVolumeGraphics.prototype, {
    /**
     * Gets the event that is raised whenever a property or sub-property is changed or modified.
     * @memberof PolylineVolumeGraphics.prototype
     *
     * @type {Event}
     * @readonly
     */
    definitionChanged: {
      get: function () {
        return this._definitionChanged;
      },
    },
  
    /**
     * Gets or sets the boolean Property specifying the visibility of the volume.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default true
     */
    show: createPropertyDescriptor("show"),
  
    /**
     * Gets or sets the Property specifying the array of {@link Cartesian3} positions which define the line strip.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     */
    positions: createPropertyDescriptor("positions"),
  
    /**
     * Gets or sets the Property specifying the array of {@link Cartesian2} positions which define the shape to be extruded.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     */
    shape: createPropertyDescriptor("shape"),
  
    /**
     * Gets or sets the {@link CornerType} Property specifying the style of the corners.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default CornerType.ROUNDED
     */
    cornerType: createPropertyDescriptor("cornerType"),
  
    /**
     * Gets or sets the numeric Property specifying the angular distance between points on the volume.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default {CesiumMath.RADIANS_PER_DEGREE}
     */
    granularity: createPropertyDescriptor("granularity"),
  
    /**
     * Gets or sets the boolean Property specifying whether the volume is filled with the provided material.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default true
     */
    fill: createPropertyDescriptor("fill"),
  
    /**
     * Gets or sets the Property specifying the material used to fill the volume.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {MaterialProperty}
     * @default Color.WHITE
     */
    material: createMaterialPropertyDescriptor("material"),
  
    /**
     * Gets or sets the Property specifying whether the volume is outlined.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default false
     */
    outline: createPropertyDescriptor("outline"),
  
    /**
     * Gets or sets the Property specifying the {@link Color} of the outline.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default Color.BLACK
     */
    outlineColor: createPropertyDescriptor("outlineColor"),
  
    /**
     * Gets or sets the numeric Property specifying the width of the outline.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default 1.0
     */
    outlineWidth: createPropertyDescriptor("outlineWidth"),
  
    /**
     * Get or sets the enum Property specifying whether the volume
     * casts or receives shadows from light sources.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     * @default ShadowMode.DISABLED
     */
    shadows: createPropertyDescriptor("shadows"),
  
    /**
     * Gets or sets the {@link DistanceDisplayCondition} Property specifying at what distance from the camera that this volume will be displayed.
     * @memberof PolylineVolumeGraphics.prototype
     * @type {Property|undefined}
     */
    distanceDisplayCondition: createPropertyDescriptor(
      "distanceDisplayCondition"
    ),
  });
  
  /**
   * Duplicates this instance.
   *
   * @param {PolylineVolumeGraphics} [result] The object onto which to store the result.
   * @returns {PolylineVolumeGraphics} The modified result parameter or a new instance if one was not provided.
   */
  PolylineVolumeGraphics.prototype.clone = function (result) {
    if (!defined(result)) {
      return new PolylineVolumeGraphics(this);
    }
    result.show = this.show;
    result.positions = this.positions;
    result.shape = this.shape;
    result.cornerType = this.cornerType;
    result.granularity = this.granularity;
    result.fill = this.fill;
    result.material = this.material;
    result.outline = this.outline;
    result.outlineColor = this.outlineColor;
    result.outlineWidth = this.outlineWidth;
    result.shadows = this.shadows;
    result.distanceDisplayCondition = this.distanceDisplayCondition;
    return result;
  };
  
  /**
   * Assigns each unassigned property on this object to the value
   * of the same property on the provided source object.
   *
   * @param {PolylineVolumeGraphics} source The object to be merged into this object.
   */
  PolylineVolumeGraphics.prototype.merge = function (source) {
    //>>includeStart('debug', pragmas.debug);
    if (!defined(source)) {
      throw new DeveloperError("source is required.");
    }
    //>>includeEnd('debug');
  
    this.show = defaultValue(this.show, source.show);
    this.positions = defaultValue(this.positions, source.positions);
    this.shape = defaultValue(this.shape, source.shape);
    this.cornerType = defaultValue(this.cornerType, source.cornerType);
    this.granularity = defaultValue(this.granularity, source.granularity);
    this.fill = defaultValue(this.fill, source.fill);
    this.material = defaultValue(this.material, source.material);
    this.outline = defaultValue(this.outline, source.outline);
    this.outlineColor = defaultValue(this.outlineColor, source.outlineColor);
    this.outlineWidth = defaultValue(this.outlineWidth, source.outlineWidth);
    this.shadows = defaultValue(this.shadows, source.shadows);
    this.distanceDisplayCondition = defaultValue(
      this.distanceDisplayCondition,
      source.distanceDisplayCondition
    );
  };
  export default PolylineVolumeGraphics;
  