This a 2D binary-tree graph drawer with the aim of simulating money transactions at QNet company.. (serves as a 2D binary-tree drawer) -This is a 2D binary-tree graph drawer with the aim of simulating money transactions at QNet company.. (serves

画出二维图形，正方形和三角形，可对其进行位置平移变换-Draw a two-dimensional graphics, square and triangle, can undertake to its position translation transformation and so on