/**
                             * <a href="http://www.w3.org/TR/html5/the-canvas-element.html">Canvas</a> implementation of the <a href="Ellipse.html">`Ellipse`</a> class.
                             * `CanvasEllipse` is not intended to be used directly. Instead, use the <a href="Ellipse.html">`Ellipse`</a> class.
                             * If the browser lacks <a href="http://www.w3.org/TR/SVG/">SVG</a> capabilities but has
                             * <a href="http://www.w3.org/TR/html5/the-canvas-element.html">Canvas</a> capabilities, the <a href="Ellipse.html">`Ellipse`</a>
                             * class will point to the `CanvasEllipse` class.
                             *
                             * @module graphics
                             * @class CanvasEllipse
                             * @constructor
                             */
                            CanvasEllipse = function()
                            {
                            	CanvasEllipse.superclass.constructor.apply(this, arguments);
                            };
                            
                            CanvasEllipse.NAME = "ellipse";
                            
                            Y.extend(CanvasEllipse, CanvasShape, {
                            	/**
                            	 * Indicates the type of shape
                            	 *
                            	 * @property _type
                            	 * @type String
                                 * @private
                            	 */
                            	_type: "ellipse",
                            
                            	/**
                                 * Draws the shape.
                                 *
                                 * @method _draw
                            	 * @private
                            	 */
                            	_draw: function()
                            	{
                            		var w = this.get("width"),
                            			h = this.get("height");
                            		this.clear();
                                    this.drawEllipse(0, 0, w, h);
                            		this._closePath();
                            	}
                            });
                            CanvasEllipse.ATTRS = Y.merge(CanvasShape.ATTRS, {
                            	/**
                            	 * Horizontal radius for the ellipse.
                            	 *
                            	 * @config xRadius
                            	 * @type Number
                            	 */
                            	xRadius: {
                            		setter: function(val)
                            		{
                            			this.set("width", val * 2);
                            		},
                            
                            		getter: function()
                            		{
                            			var val = this.get("width");
                            			if(val)
                            			{
                            				val *= 0.5;
                            			}
                            			return val;
                            		}
                            	},
                            
                            	/**
                            	 * Vertical radius for the ellipse.
                            	 *
                            	 * @config yRadius
                            	 * @type Number
                            	 * @readOnly
                            	 */
                            	yRadius: {
                            		setter: function(val)
                            		{
                            			this.set("height", val * 2);
                            		},
                            
                            		getter: function()
                            		{
                            			var val = this.get("height");
                            			if(val)
                            			{
                            				val *= 0.5;
                            			}
                            			return val;
                            		}
                            	}
                            });
                            Y.CanvasEllipse = CanvasEllipse;