code: function Graphics()
  {
      DisplayObjectContainer.call(this);
  
      this.renderable = true;
  
      /**
       * The alpha of the fill of this graphics object
       *
       * @property fillAlpha
       * @type Number
       */
      this.fillAlpha = 1;
  
      /**
       * The width of any lines drawn
       *
       * @property lineWidth
       * @type Number
       */
      this.lineWidth = 0;
  
      /**
       * The color of any lines drawn
       *
       * @property lineColor
       * @type String
       */
      this.lineColor = 'black';
  
      /**
       * Graphics data
       *
       * @property graphicsData
       * @type Array
       * @private
       */
      this.graphicsData = [];
  
      /**
       * Current path
       *
       * @property currentPath
       * @type Object
       * @private
       */
      this.currentPath = {points:[]};
  }
docs: The Graphics class contains a set of methods that you can use to create primitive shapes and lines.
  It is important to know that with the webGL renderer only simple polys can be filled at this stage
  Complex polys will not be filled. Heres an example of a complex poly: http://www.goodboydigital.com/wp-content/uploads/2013/06/complexPolygon.png
  
  @class Graphics
  @extends DisplayObjectContainer
  @constructor