text: /*global define*/
  define([
          '../Core/defaultValue',
          '../Core/defined',
          '../Core/defineProperties',
          '../Core/deprecationWarning',
          '../Core/DeveloperError',
          '../Core/Event',
          './createMaterialPropertyDescriptor',
          './createPropertyDescriptor'
      ], function(
          defaultValue,
          defined,
          defineProperties,
          deprecationWarning,
          DeveloperError,
          Event,
          createMaterialPropertyDescriptor,
          createPropertyDescriptor) {
      "use strict";
  
      /**
       * Describes a polygon defined by an hierarchy of linear rings which make up the outer shape and any nested holes.
       * The polygon conforms to the curvature of the globe and can be placed on the surface or
       * at altitude and can optionally be extruded into a volume.
       *
       * @alias PolygonGraphics
       * @constructor
       *
       * @param {Object} [options] Object with the following properties:
       * @param {Property} [options.hierarchy] A Property specifying the {@link PolygonHierarchy}.
       * @param {Property} [options.height=0] A numeric Property specifying the altitude of the polygon.
       * @param {Property} [options.extrudedHeight] A numeric Property specifying the altitude of the polygon extrusion.
       * @param {Property} [options.show=true] A boolean Property specifying the visibility of the polygon.
       * @param {Property} [options.fill=true] A boolean Property specifying whether the polygon is filled with the provided material.
       * @param {MaterialProperty} [options.material=Color.WHITE] A Property specifying the material used to fill the polygon.
       * @param {Property} [options.outline=false] A boolean Property specifying whether the polygon is outlined.
       * @param {Property} [options.outlineColor=Color.BLACK] A Property specifying the {@link Color} of the outline.
       * @param {Property} [options.outlineWidth=1.0] A numeric Property specifying the width of the outline.
       * @param {Property} [options.stRotation=0.0] A numeric property specifying the rotation of the polygon texture counter-clockwise from north.
       * @param {Property} [options.granularity=Cesium.Math.RADIANS_PER_DEGREE] A numeric Property specifying the angular distance between each latitude and longitude point.
       * @param {Property} [options.perPositionHeight=false] A boolean specifying whether or not the the height of each position is used.
       *
       * @see Entity
       * @demo {@link http://cesiumjs.org/Cesium/Apps/Sandcastle/index.html?src=Polygon.html|Cesium Sandcastle Polygon Demo}
       */
      var PolygonGraphics = function(options) {
          this._show = undefined;
          this._showSubscription = undefined;
          this._material = undefined;
          this._materialSubscription = undefined;
          this._hierarchy = undefined;
          this._hierarchySubscription = undefined;
          this._height = undefined;
          this._heightSubscription = undefined;
          this._extrudedHeight = undefined;
          this._extrudedHeightSubscription = undefined;
          this._granularity = undefined;
          this._granularitySubscription = undefined;
          this._stRotation = undefined;
          this._stRotationSubscription = undefined;
          this._perPositionHeight = undefined;
          this._perPositionHeightSubscription = undefined;
          this._outline = undefined;
          this._outlineSubscription = undefined;
          this._outlineColor = undefined;
          this._outlineColorSubscription = undefined;
          this._outlineWidth = undefined;
          this._outlineWidthSubscription = undefined;
          this._definitionChanged = new Event();
          this._fill = undefined;
          this._fillSubscription = undefined;
  
          this.merge(defaultValue(options, defaultValue.EMPTY_OBJECT));
      };
  
      defineProperties(PolygonGraphics.prototype, {
          /**
           * Gets the event that is raised whenever a property or sub-property is changed or modified.
           * @memberof PolygonGraphics.prototype
           *
           * @type {Event}
           * @readonly
           */
          definitionChanged : {
              get : function() {
                  return this._definitionChanged;
              }
          },
  
          /**
           * Gets or sets the boolean Property specifying the visibility of the polygon.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default true
           */
          show : createPropertyDescriptor('show'),
  
          /**
           * Gets or sets the Property specifying the material used to fill the polygon.
           * @memberof PolygonGraphics.prototype
           * @type {MaterialProperty}
           * @default Color.WHITE
           */
          material : createMaterialPropertyDescriptor('material'),
  
          /**
           * Gets or sets the positions that define the polygon.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @deprecated
           */
          positions : {
              get : function() {
                  deprecationWarning('PolygonGraphics.positions', 'PolygonGraphics.positions was deprecated in Cesium 1.6, use PolygonGraphics.hierarchy instead. This property will be removed in Cesium 1.9.');
                  return this.hierarchy;
              },
              set : function(value) {
                  deprecationWarning('PolygonGraphics.positions', 'PolygonGraphics.positions was deprecated in Cesium 1.6, use PolygonGraphics.hierarchy instead. This property will be removed in Cesium 1.9.');
                  this.hierarchy = value;
              }
          },
  
          /**
           * Gets or sets the Property specifying the {@link PolygonHierarchy}.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           */
          hierarchy : createPropertyDescriptor('hierarchy'),
  
          /**
           * Gets or sets the numeric Property specifying the constant altitude of the polygon.
           * This property is ignored when {@link PolygonGraphics#perPositionHeight} is true.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default 0.0
           */
          height : createPropertyDescriptor('height'),
  
          /**
           * Gets or sets the numeric Property specifying the altitude of the polygon extrusion.
           * If {@link PolygonGraphics#perPositionHeight} is false, the volume starts at {@link PolygonGraphics#height} and ends at this altitude.
           * If {@link PolygonGraphics#perPositionHeight} is true, the volume starts at the height of each {@link PolygonGraphics#hierarchy} position and ends at this altitude.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           */
          extrudedHeight : createPropertyDescriptor('extrudedHeight'),
  
          /**
           * Gets or sets the numeric Property specifying the angular distance between points on the polygon.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default {CesiumMath.RADIANS_PER_DEGREE}
           */
          granularity : createPropertyDescriptor('granularity'),
  
          /**
           * Gets or sets the numeric property specifying the rotation of the polygon texture counter-clockwise from north.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default 0
           */
          stRotation : createPropertyDescriptor('stRotation'),
  
          /**
           * Gets or sets the boolean Property specifying whether the polygon is filled with the provided material.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default true
           */
          fill : createPropertyDescriptor('fill'),
  
          /**
           * Gets or sets the Property specifying whether the polygon is outlined.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default false
           */
          outline : createPropertyDescriptor('outline'),
  
          /**
           * Gets or sets the Property specifying the {@link Color} of the outline.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default Color.BLACK
           */
          outlineColor : createPropertyDescriptor('outlineColor'),
  
          /**
           * Gets or sets the numeric Property specifying the width of the outline.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           * @default 1.0
           */
          outlineWidth : createPropertyDescriptor('outlineWidth'),
  
          /**
           * Gets or sets the boolean specifying whether or not the the height of each position is used.
           * If true, the shape will have non-uniform altitude defined by the height of each {@link PolygonGraphics#hierarchy} position.
           * If false, the shape will have a constant altitude as specified by {@link PolygonGraphics#height}.
           * @memberof PolygonGraphics.prototype
           * @type {Property}
           */
          perPositionHeight : createPropertyDescriptor('perPositionHeight')
      });
  
      /**
       * Duplicates this instance.
       *
       * @param {PolygonGraphics} [result] The object onto which to store the result.
       * @returns {PolygonGraphics} The modified result parameter or a new instance if one was not provided.
       */
      PolygonGraphics.prototype.clone = function(result) {
          if (!defined(result)) {
              return new PolygonGraphics(this);
          }
          result.show = this.show;
          result.material = this.material;
          result.hierarchy = this.hierarchy;
          result.height = this.height;
          result.extrudedHeight = this.extrudedHeight;
          result.granularity = this.granularity;
          result.stRotation = this.stRotation;
          result.fill = this.fill;
          result.outline = this.outline;
          result.outlineColor = this.outlineColor;
          result.outlineWidth = this.outlineWidth;
          result.perPositionHeight = this.perPositionHeight;
          return result;
      };
  
      /**
       * Assigns each unassigned property on this object to the value
       * of the same property on the provided source object.
       *
       * @param {PolygonGraphics} source The object to be merged into this object.
       */
      PolygonGraphics.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.material = defaultValue(this.material, source.material);
          this.hierarchy = defaultValue(this.hierarchy, source.hierarchy);
          this.height = defaultValue(this.height, source.height);
          this.extrudedHeight = defaultValue(this.extrudedHeight, source.extrudedHeight);
          this.granularity = defaultValue(this.granularity, source.granularity);
          this.stRotation = defaultValue(this.stRotation, source.stRotation);
          this.fill = defaultValue(this.fill, source.fill);
          this.outline = defaultValue(this.outline, source.outline);
          this.outlineColor = defaultValue(this.outlineColor, source.outlineColor);
          this.outlineWidth = defaultValue(this.outlineWidth, source.outlineWidth);
          this.perPositionHeight = defaultValue(this.perPositionHeight, source.perPositionHeight);
      };
  
      return PolygonGraphics;
  });
  