將Windows Forms轉成WPF

以下Windows Forms程式碼要轉成WPF：
//负责画左边的坐标和数据点
        protected override void OnPaint(PaintEventArgs e)
        {            Graphics graphics = e.Graphics;            Pen pen = new Pen(Color.Black, 1);
            Brush text_brush = new SolidBrush(Color.Black);
            Font text_font = new Font("宋体", 14);
            //x
            graphics.DrawLine(pen, Center_Zero_X, Center_Zero_Y, Center_Zero_X + LineLength, Center_Zero_Y);//x横线 
            graphics.DrawLine(pen, Center_Zero_X + LineLength - 5, Center_Zero_Y - 5, Center_Zero_X + LineLength, Center_Zero_Y);//x 
            graphics.DrawLine(pen, Center_Zero_X + LineLength - 5, Center_Zero_Y + 5, Center_Zero_X + LineLength, Center_Zero_Y);//x  
            graphics.DrawString("X", text_font, text_brush, Center_Zero_X + LineLength, Center_Zero_Y - 10);
            //y
            graphics.DrawLine(pen, Center_Zero_X, Center_Zero_Y, Center_Zero_X, Center_Zero_Y - LineLength);//y竖向线             graphics.DrawLine(pen, Center_Zero_X - 5, Center_Zero_Y - LineLength + 5, Center_Zero_X, Center_Zero_Y - LineLength);//y竖向线 
            graphics.DrawLine(pen, Center_Zero_X + 5, Center_Zero_Y - LineLength + 5, Center_Zero_X, Center_Zero_Y - LineLength);//y竖向线  
            graphics.DrawString("Y", text_font, text_brush, Center_Zero_X, Center_Zero_Y - LineLength + 10);
            //0           
            Pen point_pen = new Pen(Color.Black, 2);
            foreach (DataPoint dp in Dbscan.DataPoints_arry)
            {
                if (dp != null)
                {
                    if (dp.cluster_tag == 0)
                        point_pen.Color = Color.Black;
                    else
                        point_pen.Color = GetColor(dp.cluster_tag);                    graphics.DrawEllipse(point_pen, (float)dp.d1, (float)dp.d2, 2, 1);
                }
            }
            #region Windows 画凹包
            if (reset && convexhull_checkbox.Checked)
            {
                int size = Dbscan.clustet_set.Count;
                int num = 0;
                for (int i = 0; i < size; i++)
                {
                    int count = ((ArrayList)Dbscan.clustet_set[i]).Count;
                    Console.WriteLine("count " + i + " , n=" + count);
                    num += count;
                    ArrayList subArray = (ArrayList)Dbscan.clustet_set[i];
                    Color clusterColor = GetColor(((DataPoint)subArray[0]).cluster_tag);
                    Points p = new Points();
                    for (int j = 0; j < count; j++)
                    {
                        p.Add(new CGPoint(((DataPoint)subArray[j]).d1, ((DataPoint)subArray[j]).d2));
                    }                    if (p.Count > 3)
                    {
                        Console.WriteLine("big thank 3");
                        Points convexPoint = new Points();
                        convexHull = new ConvexHull(p);
                        convexPoint = convexHull.GetConvexHull();
                        PointF[] pointf;
                        pointf = new PointF[convexPoint.Count];
                        for (int k = 0; k < convexPoint.Count; k++)
                        {
                            pointf[k] = new PointF(convexPoint[k].X, convexPoint[k].Y);
                        }
                        Pen bluePen = new Pen(clusterColor, 2);
                        graphics.DrawPolygon(bluePen, pointf);
                    }
                }
                reset = false;
                Console.WriteLine("the num=" + num);
            }
            #endregion        }
        //根据index,返回不同类的颜色,用于区分不同的族.最大支持16种不同颜色
        public Color GetColor(int index)
        {
            Color[] xColor ={ Color.Red , Color.Pink, Color.Green,
                           Color.Gold, Color.Purple, Color.Blue, Color.Orange,
                           Color.Plum ,Color.Cyan,Color.GreenYellow,Color.LightBlue,
                           Color.MediumSpringGreen,Color.PowderBlue,Color.SlateBlue};
            return xColor[index % xColor.Length];
        }