public void CalculatePosition()
        {
            int intLeftMostPoint = 10000;
            int intTopMostPoint = 10000;

            foreach (Shape sh in shapes)
            {
                if (sh is Rect || sh is Ellipse || sh is Text)
                {
                    intLeftMostPoint = sh.X;
                    intTopMostPoint = sh.Y;
                }
                else if (sh is Polygon)
                {
                    intLeftMostPoint = ((Polygon)sh).PointList[0].X;
                    intTopMostPoint = ((Polygon)sh).PointList[0].Y;

                    foreach (Point p in ((Polygon)sh).PointList)
                    {
                        if (p.X < intLeftMostPoint)
                        {
                            intLeftMostPoint = p.X;
                        }
                        if (p.Y < intTopMostPoint)
                        {
                            intTopMostPoint = p.Y;
                        }
                    }
                }
                else if (sh is Line)
                {
                    intLeftMostPoint = ((Line)sh).PointList[0].X;
                    intTopMostPoint = ((Line)sh).PointList[0].Y;

                    foreach (Point p in ((Line)sh).PointList)
                    {
                        if (p.X < intLeftMostPoint)
                        {
                            intLeftMostPoint = p.X;
                        }
                        if (p.Y < intTopMostPoint)
                        {
                            intTopMostPoint = p.Y;
                        }
                    }
                }

                if (intLeftMostPoint < this.X)
                {
                    this.position = new Point(intLeftMostPoint, this.Y);
                }
                if (intTopMostPoint < this.Y)
                {
                    this.position = new Point(this.X, intTopMostPoint);
                }
            }
        }